WO2012002253A1 - セルロースと無機化合物を含む複合粒子 - Google Patents
セルロースと無機化合物を含む複合粒子 Download PDFInfo
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- WO2012002253A1 WO2012002253A1 PCT/JP2011/064420 JP2011064420W WO2012002253A1 WO 2012002253 A1 WO2012002253 A1 WO 2012002253A1 JP 2011064420 W JP2011064420 W JP 2011064420W WO 2012002253 A1 WO2012002253 A1 WO 2012002253A1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K9/00—Medicinal preparations characterised by special physical form
- A61K9/20—Pills, tablets, discs, rods
- A61K9/2004—Excipients; Inactive ingredients
- A61K9/2022—Organic macromolecular compounds
- A61K9/205—Polysaccharides, e.g. alginate, gums; Cyclodextrin
- A61K9/2054—Cellulose; Cellulose derivatives, e.g. hydroxypropyl methylcellulose
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K47/00—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient
- A61K47/30—Macromolecular organic or inorganic compounds, e.g. inorganic polyphosphates
- A61K47/36—Polysaccharides; Derivatives thereof, e.g. gums, starch, alginate, dextrin, hyaluronic acid, chitosan, inulin, agar or pectin
- A61K47/38—Cellulose; Derivatives thereof
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23L—FOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES, NOT OTHERWISE PROVIDED FOR; PREPARATION OR TREATMENT THEREOF
- A23L33/00—Modifying nutritive qualities of foods; Dietetic products; Preparation or treatment thereof
- A23L33/10—Modifying nutritive qualities of foods; Dietetic products; Preparation or treatment thereof using additives
- A23L33/16—Inorganic salts, minerals or trace elements
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23L—FOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES, NOT OTHERWISE PROVIDED FOR; PREPARATION OR TREATMENT THEREOF
- A23L5/00—Preparation or treatment of foods or foodstuffs, in general; Food or foodstuffs obtained thereby; Materials therefor
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23P—SHAPING OR WORKING OF FOODSTUFFS, NOT FULLY COVERED BY A SINGLE OTHER SUBCLASS
- A23P10/00—Shaping or working of foodstuffs characterised by the products
- A23P10/20—Agglomerating; Granulating; Tabletting
- A23P10/22—Agglomeration or granulation with pulverisation of solid particles, e.g. in a free-falling curtain
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/33—Heterocyclic compounds
- A61K31/335—Heterocyclic compounds having oxygen as the only ring hetero atom, e.g. fungichromin
- A61K31/35—Heterocyclic compounds having oxygen as the only ring hetero atom, e.g. fungichromin having six-membered rings with one oxygen as the only ring hetero atom
- A61K31/352—Heterocyclic compounds having oxygen as the only ring hetero atom, e.g. fungichromin having six-membered rings with one oxygen as the only ring hetero atom condensed with carbocyclic rings, e.g. methantheline
- A61K31/353—3,4-Dihydrobenzopyrans, e.g. chroman, catechin
- A61K31/355—Tocopherols, e.g. vitamin E
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K47/00—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient
- A61K47/02—Inorganic compounds
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K47/00—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient
- A61K47/30—Macromolecular organic or inorganic compounds, e.g. inorganic polyphosphates
- A61K47/36—Polysaccharides; Derivatives thereof, e.g. gums, starch, alginate, dextrin, hyaluronic acid, chitosan, inulin, agar or pectin
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- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K9/00—Medicinal preparations characterised by special physical form
- A61K9/14—Particulate form, e.g. powders, Processes for size reducing of pure drugs or the resulting products, Pure drug nanoparticles
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/12—Powdering or granulating
- C08J3/122—Pulverisation by spraying
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/34—Silicon-containing compounds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L1/00—Compositions of cellulose, modified cellulose or cellulose derivatives
- C08L1/02—Cellulose; Modified cellulose
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23L—FOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES, NOT OTHERWISE PROVIDED FOR; PREPARATION OR TREATMENT THEREOF
- A23L29/00—Foods or foodstuffs containing additives; Preparation or treatment thereof
- A23L29/30—Foods or foodstuffs containing additives; Preparation or treatment thereof containing carbohydrate syrups; containing sugars; containing sugar alcohols, e.g. xylitol; containing starch hydrolysates, e.g. dextrin
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23L—FOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES, NOT OTHERWISE PROVIDED FOR; PREPARATION OR TREATMENT THEREOF
- A23L33/00—Modifying nutritive qualities of foods; Dietetic products; Preparation or treatment thereof
- A23L33/10—Modifying nutritive qualities of foods; Dietetic products; Preparation or treatment thereof using additives
- A23L33/125—Modifying nutritive qualities of foods; Dietetic products; Preparation or treatment thereof using additives containing carbohydrate syrups; containing sugars; containing sugar alcohols; containing starch hydrolysates
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23P—SHAPING OR WORKING OF FOODSTUFFS, NOT FULLY COVERED BY A SINGLE OTHER SUBCLASS
- A23P10/00—Shaping or working of foodstuffs characterised by the products
- A23P10/40—Shaping or working of foodstuffs characterised by the products free-flowing powder or instant powder, i.e. powder which is reconstituted rapidly when liquid is added
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23V—INDEXING SCHEME RELATING TO FOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES AND LACTIC OR PROPIONIC ACID BACTERIA USED IN FOODSTUFFS OR FOOD PREPARATION
- A23V2002/00—Food compositions, function of food ingredients or processes for food or foodstuffs
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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- A61K9/00—Medicinal preparations characterised by special physical form
- A61K9/20—Pills, tablets, discs, rods
- A61K9/2004—Excipients; Inactive ingredients
- A61K9/2009—Inorganic compounds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2301/00—Characterised by the use of cellulose, modified cellulose or cellulose derivatives
- C08J2301/02—Cellulose; Modified cellulose
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/249921—Web or sheet containing structurally defined element or component
- Y10T428/249953—Composite having voids in a component [e.g., porous, cellular, etc.]
- Y10T428/249955—Void-containing component partially impregnated with adjacent component
- Y10T428/249958—Void-containing component is synthetic resin or natural rubbers
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
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- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/249921—Web or sheet containing structurally defined element or component
- Y10T428/249953—Composite having voids in a component [e.g., porous, cellular, etc.]
- Y10T428/249987—With nonvoid component of specified composition
- Y10T428/24999—Inorganic
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
- Y10T428/2982—Particulate matter [e.g., sphere, flake, etc.]
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
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- Y10T428/2982—Particulate matter [e.g., sphere, flake, etc.]
- Y10T428/2991—Coated
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y10T428/2998—Coated including synthetic resin or polymer
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
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- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31971—Of carbohydrate
Definitions
- the present invention relates to composite particles that are excellent in fluidity, have high liquid carrying ability, and can prevent tableting troubles by maintaining high particle formability and fluidity even after holding the liquid.
- Patent Document 1 describes an invention of fine particles obtained by co-processing microcrystalline cellulose particles and calcium carbonate having a particle size smaller than 30 ⁇ m at a specific mass ratio for the purpose of reducing the cost of pharmaceutical excipients. .
- Patent Document 2 describes an invention of an excipient composition comprising fine particle agglomerates of microcrystalline cellulose and silicon dioxide as a pharmaceutical excipient with improved compressibility.
- Patent Document 3 discloses a cellulose inorganic compound, which is an aggregate of specific cellulose dispersed particles and water-insoluble inorganic compound particles, and has an intraparticle pore volume of 0.260 cm 3 / g or more. The invention of porous composite particles is described. Patent Document 3 discloses that by combining cellulose and an inorganic compound, particles having a high pore volume and excellent moldability, disintegration, and fluidity can be obtained.
- Patent Document 4 although not a complex, as a physical mixture of an inorganic compound and crystalline cellulose, in a solid agent composed of a drug, calcium silicate, and starch and / or crystalline cellulose, calcium silicate is added to the drug. And a solid agent containing 10 to 45% by weight of starch and / or starch cellulose and / or crystalline cellulose based on calcium silicate is described. It is described that even if a tablet with its own moldability, such as phenacetin or acetaminophen, is directly compressed, the amount of the drug can be blended in an amount of 70 to 90 parts by weight without causing capping.
- a tablet with its own moldability such as phenacetin or acetaminophen
- Tablets are usually tableted by filling powder into a mortar and compression-molded with a scissors, but if the drug is likely to adhere to the scissors, a phenomenon called sticking that causes the molded body surface to peel off occurs. .
- an inorganic compound alone is used as an excipient, but sticking cannot always be prevented with an inorganic compound alone.
- the inorganic compound alone has a large apparent specific volume, the powder jetting property increases during tableting, the filling property into the die deteriorates, and the weight of the molded product varies. There arises a problem that a phenomenon called capping in which the part peels occurs. Therefore, a large amount of inorganic compound cannot be added.
- Cellulose powder is an excipient with high moldability, but once wetted, the moldability deteriorates and the function as an excipient is not exhibited, and the liquid retainability is low compared to inorganic compounds. There is a problem.
- a conventionally known composite of cellulose and an inorganic compound has a low liquid retention and low fluidity of particles after liquid retention. In addition, problems such as sticking and capping could not be solved sufficiently.
- An object of the present invention is to provide composite particles having a high liquid retention rate and high fluidity of particles after liquid retention.
- it is to provide composite particles that can be tableted by open feed in the direct tableting method, have few tableting troubles, and have high moldability.
- it is set as a molded object with an active ingredient, it is providing the molded object with the uniform weight and active ingredient content, high hardness, and low friability.
- the present inventors can increase the apparent specific volume, the pore volume, and the liquid retention rate by combining cellulose and an inorganic compound. Has been found to be high, and the present invention has been made.
- the present invention is as follows. (1) Composite particles containing cellulose and an inorganic compound and having an apparent specific volume of 7 to 13 cm 3 / g. (2) The composite particles according to (1), wherein the average width of the cellulose is 2 to 30 ⁇ m and the average thickness is 0.5 to 5 ⁇ m. (3) The composite particles according to (1) or (2), wherein the cellulose contains 10 to 60 parts by mass and the inorganic compound contains 40 to 90 parts by mass.
- the inorganic compound is hydrous silicon dioxide, light anhydrous silicic acid, synthetic aluminum silicate, magnesium hydroxide alumina, magnesium metasilicate magnesium aluminate, magnesium silicate, calcium silicate, hydrous non-crystalline silicon oxide, silica
- the composite particle according to any one of (1) to (3) which is at least one selected from the group consisting of magnesium silicate and hydrous magnesium silicate.
- a molded article comprising the composite particles according to any one of (1) to (9) and an active ingredient.
- (12) A composite particle containing cellulose and an inorganic compound, and an active ingredient, wherein the active ingredient is a liquid having a viscosity of 3 to 10,000 mPa ⁇ s at 25 ° C. Molded body containing 250 mg.
- the composite particles of the present invention have a large apparent specific volume and a large pore volume, and a high retention ratio of tocopherol acetate, which is an index of a liquid retention ratio. Due to the composite, the scattering property is reduced, the operability is good, and it can be used as an adsorption carrier for liquid components. In addition, by compositing, the fluidity after holding the liquid is high, and the weight of the molded body and the content of the active ingredient between the molded bodies can be made uniform, so that the liquid component in the molded body can be made high. In addition, the molded body of the present invention has sufficient hardness, can prevent sticking and capping, and can provide a molded body with low friability.
- the composite particle of the present embodiment is a particle that contains cellulose and an inorganic compound and is composited to have a specific apparent specific volume.
- cellulose is a fibrous material containing a natural polymer obtained from a natural product.
- the cellulose preferably has a cellulose I-type crystal structure.
- the average width of cellulose is preferably 2 to 30 ⁇ m and the average thickness is preferably 0.5 to 5 ⁇ m. It is preferable that the average width and the average thickness of cellulose are in the above-mentioned range since the pores inside the particles can be sufficiently developed by the composite. More preferably, the average width of cellulose is 2 to 25 ⁇ m and the average thickness is 1 to 5 ⁇ m.
- the cellulose in the present invention includes crystalline cellulose.
- the crystalline cellulose used in the present invention is a white crystalline powder, and ⁇ -cellulose obtained as a pulp from a fibrous plant is partially obtained with a mineral acid. Depolymerized and purified. There are various grades of crystalline cellulose. In the present invention, crystalline cellulose having a polymerization degree of 100 to 450 is preferred. Commercially available products such as “Theolas” PH grade, KG grade, UF grade (all manufactured by Asahi Kasei Chemicals Co., Ltd.) and the like can be used, and UF grade is most preferred.
- the volume average particle diameter of cellulose is preferably 10 to 100 ⁇ m.
- the thickness is preferably 10 to 50 ⁇ m, more preferably 10 to 40 ⁇ m.
- the average degree of polymerization of cellulose is preferably 10 to 450. More preferably, it is 150 to 450.
- the inorganic compound is not particularly limited as long as it is insoluble in water and has an apparent specific volume of 10 to 50 cm 3 / g.
- hydrous silicon dioxide, light anhydrous silicic acid, synthetic aluminum silicate, Alumina magnesium hydroxide, magnesium aluminate metasilicate, magnesium aluminate silicate, calcium silicate, hydrous non-crystalline silicon oxide, magnesium silicate, hydrous magnesium silicate are preferred.
- the volume average particle diameter of the inorganic compound is preferably 10 to 50 ⁇ m from the viewpoint that the concentration of the dispersion liquid of cellulose and the inorganic compound can be increased. Particularly preferred is calcium silicate.
- Calcium silicate is composed of CaO, SiO 2 , H 2 O and expressed by the chemical formula 2CaO ⁇ 3SiO 2 ⁇ mSiO 2 ⁇ nH 2 O (1 ⁇ m ⁇ 2, 2 ⁇ n ⁇ 3). preferable.
- Commercially available products include trade name Florite R (made by Tokuyama), trade name Florite RE (CaO 2 is 50% or more, CaO is 22% or more, sold by Eisai Foods Chemical Co., Ltd.), and the like.
- Calcium silicate is a white powder and is insoluble in water. Calcium silicate is a substance having a high liquid absorption capacity and good moldability.
- the volume average particle diameter is preferably 10 to 40 ⁇ m, more preferably 20 to 30 ⁇ m.
- the present inventors have found that the tocopherol acetate retention rate, which is an index of the liquid retention rate, can be maximized by combining an inorganic compound with cellulose and increasing the apparent specific volume as much as possible.
- Calcium silicate alone has a tocopherol acetate retention rate of 800 to 900% among inorganic compounds, and cellulose has a tocopherol acetate retention rate of 200 to 250%. For this reason, it is considered that if both are simply mixed, a mixture exceeding 800% cannot be produced. However, it has been found that the retention rate is higher than a simple arithmetic average value by sufficiently developing the pores inside the particles by compositing.
- the tocopherol acetate retention rate of a composite particle and a mixture of cellulose having a calcium silicate content of about 50% is compared.
- the theoretical value of tocopherol acetate retention is about 550%.
- the composite particles having the same blending amount have a very high retention rate of about 740%.
- the liquid retention rate is improved, and further, the characteristics of cellulose are successfully imparted to the composite particles. This makes it possible to obtain composite particles imparted with the moldability and fluidity of cellulose while having a high liquid retention rate.
- the composite particles of the present embodiment preferably contain 10 to 60 parts by mass of cellulose and 40 to 90 parts by mass of an inorganic compound. More preferably, it is 15 to 45 parts by mass of cellulose and 55 to 85 parts by mass of an inorganic compound.
- the inorganic compound is 40 parts by mass or more, a large intraparticle pore volume can be imparted to the resulting composite particles composed of cellulose and the inorganic compound, and sufficient liquid retention can be imparted.
- the compression moldability after liquid holding is also improved.
- the inorganic compound is 90 parts by mass or less, jet properties are suppressed, and variations in the weight and active ingredient content of the molded body and a decrease in moldability can be suppressed.
- the composite particles are not simply a mixture of cellulose and an inorganic compound, but include those in which a plurality of individual particles of cellulose and an inorganic compound are collected to form one aggregate larger than the individual particles.
- the composite particle of this embodiment is observed on the particle surface using an SEM (magnification 200 to 500 times), individual particles of cellulose and inorganic compound are observed, and an aggregate in which a plurality of them are collected is formed. The situation can be recognized (see FIG. 9). For comparison, a simple mixture is shown in FIG. This aggregate is larger than the individual particles of cellulose and inorganic compounds.
- the composite particles can form pores inside the particles, and can support liquid components that exceed the amount that the individual particles of cellulose and inorganic compound can hold.
- the more complex the greater the amount of pores inside the particles and the higher the ability to carry liquid components.
- the degree of conjugation can be measured by comparing the tocopherol acetate retention rate.
- the tocopherol acetate retention rate is an arithmetic average value based on the composition ratio of both, but the more complexed, the more pores inside the particles, so the tocopherol acetate retention rate The rate is high.
- the apparent specific volume of the composite particles of this embodiment needs to be 7 to 13 cm 3 / g. If it is 7 cm 3 / g or more, the liquid retention is improved, and if it is 13 cm 3 / g or less, an increase in jet properties can be suppressed, and a variation in the content of active ingredients and a decrease in moldability can be suppressed. More preferably, it is 8 to 12 cm 3 / g.
- the pore diameter of the composite particles of this embodiment is preferably 0.003 to 1 ⁇ m.
- the pore diameter is the size of the pores on the surface of the composite particle. More preferably, it is 0.05 to 0.5 ⁇ m.
- the composite particles of the present embodiment preferably have a pore volume of 1.9 to 3.9 cm 3 / g.
- the pore volume is the volume of fine pores of the composite particles. If the pore volume is 1.9 cm 3 / g or more, the liquid retention rate is improved. Moreover, if it is 3.9 cm ⁇ 3 > / g or less, the increase in jet property can be suppressed, and the dispersion
- the pore volume contributes to the compression moldability of the composite particles and the liquid retention of the molded body.
- the pore volume When the pore volume is large, the composite particles are liable to be crushed during compression, the plastic deformability is improved, and the hardness of the molded body is increased.
- the pore volume when the pore volume is large, the penetration of the liquid into the composite particles is promoted, so that the liquid retention is improved.
- the composite particles of this embodiment preferably have a porosity of 15 to 50%.
- the porosity is the ratio of the pore volume to the volume of the composite particles.
- a porosity of 15% or more is preferable because a high liquid retention rate is obtained.
- it is 50% or less, the increase in jet property can be suppressed and the fall of a moldability can be suppressed, and it is preferable. More preferably, it is 20 to 40%.
- the weight average particle diameter of the composite particles of the present embodiment is preferably 30 to 250 ⁇ m. From the viewpoint of fluidity, the weight average particle diameter is preferably 30 ⁇ m or more, and from the viewpoint of suppressing separation and knitting, the weight average particle diameter is preferably 250 ⁇ m or less. More preferably, it is 40 to 100 ⁇ m.
- separation and segregation means that the active ingredient and the composite particles are not mixed uniformly and the uniformly mixed state is not maintained.
- the composite particles of this embodiment preferably have a tocopherol acetate retention of 500 to 1000%. Since the tocopherol acetate retention rate is high, that is, the liquid retention rate is high, the content of the active ingredient in the molded body can be increased. If it is less than 500%, the amount of liquid that can be carried is small. From the viewpoint of liquid retention, the higher the better, but it is about 1000% at most. More preferably, the tocopherol acetate retention is 600 to 1000%, particularly preferably 700 to 1000%.
- the composite particles of the present embodiment preferably have an angle of repose of 45 ° or less from the viewpoint of fluidity.
- the lower limit is not particularly limited, but 25 ° is preferable from the viewpoint of suppressing segregation and segregation with the active ingredient during high-speed continuous compression. More preferably, it is 25 to 40 °.
- the composite particles after holding the liquid preferably have an angle of repose of 45 ° or less, preferably 25 to 40 ° in terms of fluidity.
- the composite particles of the present embodiment preferably have a hardness of 200 to 340N.
- the hardness is a value obtained by using a Schleingel hardness meter using a cylindrical molded body obtained by compressing 0.5 g with a pressure of 10 MPa with a circular flat plate having a diameter of 1.1 cm. .
- the composite particles of the present embodiment further contain starch.
- Starch is preferable because it has binding properties and contributes to maintaining a composite state of cellulose and an inorganic compound and fixes the granulated state.
- starch for example, dextrin, soluble starch, corn starch, potato starch, partially pregelatinized starch, pregelatinized starch and the like can be used, but those having binding properties are preferable.
- the outer shell is a binding paste component and the inner core is disintegrated particles, “SWELSTAR TM WB-1 (manufactured by Asahi Kasei Chemicals)” is particularly preferred as a starch that contributes to improving disintegration.
- the composite particle containing starch is 100 parts by mass, it is preferable to contain 5 to 15 parts by mass of starch.
- the crystalline cellulose and the inorganic compound are preferably contained in an amount of 85 to 95 parts by mass.
- the composite particles of this embodiment have a large apparent specific volume, a high liquid retention rate, and excellent fluidity. Furthermore, it can be suitably used for the direct tableting method and the wet tableting method, has low scatterability and excellent operability, and prevents tableting troubles such as sticking and capping.
- the composite particles of the present embodiment are particularly suitable for active ingredients with low fluidity and low tablet hardness, and specific examples thereof include powders such as cold medicines and extract powders such as Kampo medicines, and compression and shaping. And drugs such as enzymes and proteins that are easily inactivated by friction with the agent.
- tablets that are liable to cause tableting troubles such as cracks on the tablet surface, cracking, peeling from the inside, and cracks.
- Specific examples thereof include a small tablet, a non-circular deformed tablet having a portion where compression pressure is not easily applied, such as a constriction at the edge, a tablet containing a large amount of various drugs, a tablet containing coated granules, and the like.
- the composite particles of this embodiment can be obtained by dispersing cellulose and an inorganic compound in a medium and drying the dispersion.
- it can be obtained by strongly stirring cellulose and an inorganic compound in a wet manner (so-called compounding, coprocessing, and coprocessing).
- the raw material of cellulose is a natural product containing cellulose, and examples thereof include wood, bamboo, straw, rice straw, cotton, ramie, bagasse, kenaf, beet, squirt, and bacterial cellulose.
- the raw material may be vegetable or animal, or a mixture of two or more.
- you may hydrolyze a raw material. When hydrolyzing in particular, acid hydrolysis, alkaline oxidation decomposition, hydrothermal decomposition, steam explosion, etc. may be mentioned, and two or more may be used in combination.
- the medium for dispersing the solid content containing cellulose is not particularly limited as long as it is industrially used, and water or an organic solvent can be used.
- the organic solvent include alcohols such as methanol, ethanol, isopropyl alcohol, butyl alcohol, 2-methylbutyl alcohol, and benzyl alcohol, hydrocarbons such as pentane, hexane, heptane, and cyclohexane, acetone, and ethyl methyl ketone. Ketones are mentioned.
- the organic solvent is preferably used for pharmaceuticals, and examples thereof include those classified as solvents in “Pharmaceutical Additives Encyclopedia” (published by Yakuji Nippo Co., Ltd.).
- the medium is preferably water. Two or more kinds of water and organic solvents may be used in combination. Moreover, after once dispersing in one type of medium, the medium may be removed and dispersed in a different medium.
- the cellulose referred to in the present invention preferably has an average width of 2 to 30 ⁇ m and an average thickness of 0.5 to 5 ⁇ m. It is not particularly limited as long as it is a method of tearing cellulose mainly in the longitudinal direction, but it is possible to treat wood pulp with a high-pressure homogenizer, etc., and if necessary, mechanical treatment such as grinding or fractionation treatment, or a method of appropriately combining both. It is possible to control the average width and average thickness of cellulose within a specific range. Further, for example, a pulp having an average width of 2 to 30 ⁇ m and an average thickness of 0.5 to 5 ⁇ m may be selected and used.
- the volume average particle diameter of cellulose in an aqueous dispersion state is preferably 10 to 100 ⁇ m.
- the thickness is preferably 10 to 50 ⁇ m, more preferably 10 to 40 ⁇ m.
- Patent Document 3 describes a cellulose having a L / D of 2.0 or more in a 10 to 100 ⁇ m fraction in a water-dispersed state as a cellulose to be complexed. As shown, the high apparent specific volume of the present application cannot be achieved. Furthermore, it is inferior to the composite of the present invention in terms of pore volume and tocopherol acetate retention. A cellulose having a specific average width and average thickness is preferable in order to increase the amount of pores inside the particles.
- a method for obtaining cellulose having a volume average particle diameter of 10 to 100 ⁇ m in an aqueous dispersion state there are the following methods. i) A method of adjusting the particle diameter by adding shearing, grinding, crushing and grinding to cellulose. ii) A method in which cellulose is subjected to high-pressure treatment such as blasting treatment, cellulose particles are divided in the major axis direction, and shearing force is applied as necessary to adjust the particle diameter. iii) A method of adjusting cellulose by chemical treatment.
- any of the above methods may be used, and two or more of the above methods may be used in combination.
- the above methods i) and ii) may be carried out wet, dry, or a combination thereof.
- the above methods i) and ii) include, for example, a one-way rotary type such as a portable mixer, a three-dimensional mixer, and a side mixer, a multi-axis rotary type, a reciprocating reversal type, a vertical movement type, a rotation + vertical movement type, and a pipeline Shearing method using a stirring blade such as a formula, jet-type stirring shearing method such as a line mixer, a processing method using a high shearing homogenizer, a high pressure homogenizer, an ultrasonic homogenizer, a shaft rotation extrusion type shearing method such as a kneader, etc. Is mentioned.
- a screen-type pulverization method such as a screen mill or a hammer mill, a blade rotation shear screen-type pulverization method such as a flash mill, an air-flow-type pulverization method such as a jet mill, a ball-type pulverization method such as a ball mill or a vibration ball mill And a blade stirring type pulverization method.
- a screen-type pulverization method such as a screen mill or a hammer mill
- a blade rotation shear screen-type pulverization method such as a flash mill
- an air-flow-type pulverization method such as a jet mill
- a ball-type pulverization method such as a ball mill or a vibration ball mill
- a blade stirring type pulverization method Two or more of the above methods may be used in combination.
- the volume average particle diameter of cellulose can also be controlled within a desired range by adjusting the conditions of the hydrolysis or dispersion process of cellulose, particularly the stirring power of a solution containing cellulose.
- the conditions of the hydrolysis or dispersion process of cellulose particularly the stirring power of a solution containing cellulose.
- the degree of polymerization of cellulose tends to decrease
- the volume average particle size of cellulose in the dispersion tends to decrease.
- the volume average particle diameter of the cellulose particles tends to decrease.
- a method for producing a dispersion containing cellulose and an inorganic compound will be described. It can be produced by dispersing cellulose or an inorganic compound in a medium. Specifically, the following method is mentioned. i) A method of adding a mixture of cellulose and an inorganic compound to a medium to obtain a dispersion. ii) A method of adding an inorganic compound to a cellulose dispersion to obtain a dispersion. iii) A method in which an inorganic compound is added to a dispersion obtained by mixing a third component such as starch and cellulose particles to obtain a dispersion.
- the method for adding each component is not particularly limited as long as it is a commonly used method. Specific examples include addition methods using a small suction transport device, a pneumatic transport device, a bucket conveyor, a pressure-feed transport device, a vacuum conveyor, a vibrating metering feeder, a spray, a funnel and the like. It may be added continuously or in a batch.
- the mixing method is not particularly limited as long as it is a commonly used method.
- V-type, W-type, double-cone type, container rotary type mixers such as container tack type mixers, high-speed stirring type, universal stirring type, ribbon type, pug type, stirring type such as Nauta type mixer A mixer, a high-speed fluid mixer, a drum mixer, or a fluidized bed mixer may be used.
- the concentration of cellulose, inorganic compound, and starch in the dispersion obtained by the above operation is preferably 5 to 40% by mass. 5 mass% or more is preferable at the point of fluidity
- the composite liquid of the present embodiment is obtained by drying the dispersion obtained by the above operation.
- the drying method is not particularly limited, and examples thereof include freeze drying, spray drying, drum drying, shelf drying, airflow drying, and vacuum drying. Two or more kinds may be used in combination.
- the spraying method for spray drying may be any spraying method such as a disk type, a pressurized nozzle, a pressurized two-fluid nozzle, and a pressurized four-fluid nozzle, and two or more of them may be used in combination.
- a small amount of water-soluble polymer or surfactant may be added for the purpose of lowering the surface tension of the dispersion, and a foaming agent or gas may be used for the purpose of accelerating the vaporization rate of the medium. May be added, or a gas may be added to the dispersion.
- a foaming agent or gas may be used for the purpose of accelerating the vaporization rate of the medium.
- a gas may be added to the dispersion.
- Specific examples of water-soluble polymers, surfactants, foaming agents, substances that generate gas, and gases are shown below.
- the water-soluble polymer, the surfactant, and the substance that generates gas may be added before drying, and the order of addition is not particularly limited. Moreover, you may use 2 or more types together, respectively.
- water-soluble polymers examples include hydroxypropylcellulose, hydroxypropylmethylcellulose, polyacrylic acid, carboxovinyl polymer, polyethylene glycol, polyvinyl alcohol, polyvinylpyrrolidone, methylcellulose, gum arabic, and starch paste (“Pharmaceutical Additives Encyclopedia”) Water-soluble polymers described in Nikkansha Co., Ltd.).
- Surfactants include phospholipids, glycerin fatty acid esters, polyethylene glycol fatty acid esters, sorbitan fatty acid esters, polyoxyethylene hydrogenated castor oil, polyoxyethylene cetyl ether, polyoxyethylene stearyl ether, polyoxyethylene nonylphenyl ether, polyoxy Ethylene polyoxypropylene glycol, polyoxyethylene sorbitan san monolaurate, polysorbate, sorbitan monooleate, monostearic acid glyceride, monooxyethylene sorbitan monopalmitate, monooxyethylene sorbitan monostearate, polyoxyethylene sorbitan monooleate "Pharmaceutical Additives Encyclopedia” such as sorbitan monopalmitate and sodium lauryl sulfate (from Yakuji Nippo Co., Ltd.) ) To include those classified as a surfactant.
- “Pharmaceutical Additives Encyclopedia” such as sorbitan monopalmitate and sodium lauryl
- “Pharmaceutical Additives Encyclopedia” such as tartaric acid, sodium bicarbonate, potato starch, anhydrous citric acid, medicated soap, sodium lauryl sulfate, lauric acid diethanolamide, laumacrogol (published by Yakuji Nippo Co., Ltd.) And the foaming agents described in the above.
- Examples of substances that generate gas include bicarbonates that generate gas by thermal decomposition such as sodium hydrogen carbonate and ammonium hydrogen carbonate, carbonates that generate gas by reacting with acids such as sodium carbonate and ammonium carbonate, and the like. .
- the acid include organic acids such as citric acid, acetic acid, ascorbic acid and adipic acid, proton acids such as hydrochloric acid, sulfuric acid, phosphoric acid and nitric acid, and Lewis acids such as boron fluoride.
- those used as pharmaceuticals and foods are preferred.
- the dispersion may be impregnated with a gas such as nitrogen, carbon dioxide, liquefied petroleum gas, or dimethyl ether.
- the composite particles according to the present embodiment are formed by simultaneously drying inorganic compounds in the dispersion containing the cellulose as described above.
- the medium is evaporated in a state where the cellulose and the inorganic compound are homogeneously associated, it is considered that a capillary condensation action occurs and the cellulose and the inorganic compound are densely aggregated.
- This aggregate structure cannot be obtained even if an inorganic compound or cellulose is added to and mixed with what is dried with cellulose alone or dried with an inorganic compound alone.
- the cellulose in the dispersion has a large effect of suppressing excessive particle aggregation due to capillary condensation during drying, and can form a large pore volume in the composite particles.
- the composite particles of the present embodiment are produced, the cellulose particles and the inorganic compound particles also remain in the dried powder, but they may be used as they are without being separated.
- the molded body of this embodiment is obtained by molding the composite particles of this embodiment and the active ingredient. Below, the molded object of this embodiment is demonstrated.
- the active ingredient can be used in the range of 0.001 to 99%, and the composite particle can be used in the range of 1 to 99.999%.
- the active ingredient is preferably 0.001% or more in terms of securing an effective amount for treatment, and 99% or less in terms of practical hardness, friability and disintegration. More preferably, the molded body contains 1 to 90% of composite particles.
- the active ingredient is liquid, tableting troubles such as sticking and capping occur, so the content in the molded body is limited.
- the composite of the present invention has high liquid retention and high moldability. Therefore, it is possible to mix the liquid component in excess of 20%.
- the content is preferably 21 to 50%, particularly preferably 21 to 30%.
- the tocopherol acetate content in the molded product currently on the market is 100 mg / 500 mg in total of the tablet, and no compound containing more than 20% is found.
- the composite of the present invention it is possible to reduce the size of the molded product in the range of 250 to 480 mg if the blending amount is 21 to 50% of the liquid component, and 105 to 250 mmg if the tablet weight is 500 mg.
- the liquid component can be increased within the range. 120 to 200 mg is preferable, and 120 to 150 mg is more preferable.
- the molded body of this embodiment can be processed by a known method such as granulation, sizing or tableting.
- the composite particles of the present embodiment are suitable for molding by tableting.
- a molded body having sufficient hardness can be produced in the direct tableting method.
- the composite particles of the present embodiment include a dry granule compression method, a wet granule compression method, a latter method, a method for producing a multinucleated tablet using a pre-compressed tablet as an inner core, and a plurality of pre-compressed tablets. It is also suitable for a method for producing a multilayer tablet by overlapping and compressing the molded body.
- active ingredients include pharmaceutical ingredients, health food ingredients, agricultural chemical ingredients, fertilizer ingredients, feed ingredients, food ingredients, cosmetic ingredients, pigments, fragrances, metals, ceramics, catalysts, surfactants, and the like. It is done. Pharmaceutical ingredients and health food ingredients are suitable active ingredients.
- Drug ingredients include antipyretic analgesics, antihypnotics, hypnotic sedatives, sleepiness prevention drugs, antipruritics, pediatric analgesics, stomachic drugs, antacids, digestives, cardiotonic drugs, arrhythmic drugs, antihypertensive drugs, vasodilators,
- the drugs that are administered orally such as diuretics, anti-ulcer drugs, intestinal drugs, anti-osteoporosis drugs, antitussive expectorants, anti-asthma drugs, antibacterial agents, frequent urinary remedies, nourishing tonics, vitamins, etc. are targeted.
- the medicinal component may be used alone or in combination of two or more.
- aspirin for example, aspirin, aspirin aluminum, acetaminophen, etenzamide, sazapyrine, salicylamide, lactylphenetidine, isothibenzyl hydrochloride, diphenylpyraline hydrochloride, diphenhydramine hydrochloride, dipheterol hydrochloride, triprolidine hydrochloride, tripelenamine hydrochloride, tonsilamine hydrochloride Phenetazine hydrochloride, methodirazine hydrochloride, diphenhydramine salicylate, carbinoxamine diphenyldisulfonate, alimemazine tartrate, diphenhydramine tannate, diphenylpyraline teocrate, mebuhydroline, promethazine methylene disalicylate, carbinoxamine maleate, dl-malemine chlorate -Chlorpheniramine maleate, dipheterol phosphate, allohydrochloride Lamide, Cloperas
- Gall including Yutan
- Shajin Syoukyo
- Sojitsu Clove
- Chimpi Sandalwood
- Earth Dragon Chikutsutsu Carrot
- Carrot Carrot “Japanese Pharmacopoeia”, “External Code”, “USP”, “NF”, “EP”
- valerian buttonpi, salamander and extracts thereof, insulin, vasopressin, interferon, urokinase, serratopeptidase, somatostatin, etc.
- One kind selected from the above can be used alone, or two or more kinds can be used in combination.
- the health food component is not limited as long as it is a component formulated for the purpose of enhancing health.
- the active ingredient may be in any form such as powder, crystal, liquid, semi-solid, etc., and the active ingredient which is liquid is suitable.
- the active ingredient may be coated or encapsulated for the purpose of controlling elution and reducing bitterness.
- the active ingredient may be dissolved, suspended, or emulsified in a medium.
- a plurality of active ingredients may be used in combination.
- Liquid active ingredients include teprenone, indomethacin / farnesyl, menatetrenone, phytonadione, vitamins such as vitamin A oil, phenipentol, vitamin D, vitamin E, DHA (docosahexaenoic acid), EPA (eicosapentaenoic acid), liver oil, etc.
- vitamins such as vitamin A oil, phenipentol, vitamin D, vitamin E, DHA (docosahexaenoic acid), EPA (eicosapentaenoic acid), liver oil, etc.
- Japanese Pharmacopoeia "External Code”, “USP”, “NF”, “EP”
- oil soluble flavors such as higher unsaturated fatty acids, coenzyme Q, orange oil, lemon oil and peppermint oil And the like.
- Vitamin E has various homologues and derivatives, and examples thereof include dl- ⁇ -tocopherol, dl- ⁇ -tocopherol acetate, tocopherol acetate, d- ⁇ -tocopherol acetate, and the like that is liquid at 25 ° C.
- the viscosity is not particularly limited, but those having a viscosity in the range of 3 to 10,000 mPa ⁇ s are preferable. When the viscosity is moderate, it is preferable because the balance between moldability and fluidity of the composite particles after the liquid component is supported on the composite is excellent. Particularly preferred is tocopherol acetate.
- Semi-solid active ingredients include terrestrial dragon, licorice, keihi, peonies, buttonpi, valerian, salamander, ginger, chimpi, maoh, nantenjitsu, oshiki, onji, kyoukyo, sage, shizen, sarcophagus, seneca, baimo , Fennel, amber, auren, gadget, chamomile, gentian, goo, beast gall, shajin, ginger, sojutsu, clove, chinhi, sandalwood, chiketsu carrot, carrot, kakkonyu, katsushiyu, kososan, purple katsura Mention herbal or herbal extracts such as hot water, small purple hot water, small blue dragon hot water, Mumon winter hot water, half summer Koboku hot water, Mao hot water, oyster meat extract, propolis and propolis extract, coenzyme Q, etc. it can.
- the crystal form of the active ingredient after molding may be the same as or different from the state before molding, but is preferably the same in terms of stability.
- the molded product of the present embodiment includes an excipient, a disintegrant, a binder, a fluidizing agent, a lubricant, a corrigent, a fragrance, a colorant, a sweetener and the like as necessary. It is also free to include other additives. Two or more additives may be used in combination.
- excipients include acrylic acid starch, L-aspartic acid, aminoethylsulfonic acid, aminoacetic acid, candy (powder), gum arabic, gum arabic powder, alginic acid, sodium alginate, pregelatinized starch, inositol, ethylcellulose, ethylene Vinyl acetate copolymer, sodium chloride, olive oil, kaolin, cacao butter, casein, fructose, pumice grains, carmellose, carmellose sodium, hydrous silicon dioxide, dry yeast, dry aluminum hydroxide gel, dry sodium sulfate, dry magnesium sulfate, agar, Agar powder, xylitol, citric acid, sodium citrate, disodium citrate, glycerin, calcium glycerophosphate, sodium gluconate, L-glutamine, clay, clay granules, croscarmellose na Lithium, crospovidone, magnesium aluminate silicate, calcium
- Disintegrants include croscarmellose sodium, carmellose, carmellose calcium, carmellose sodium, celluloses such as low-substituted hydroxypropylcellulose, carboxymethyl starch sodium, hydroxypropyl starch, rice starch, wheat starch, corn starch, potato Starches, starches such as partially pregelatinized starch, synthetic polymers such as crospovidone, crospovidone copolymers, etc., classified as disintegrants in the “Pharmaceutical Additives Dictionary” (published by Yakuji Nippo Co., Ltd.) .
- sugars such as sucrose, glucose, lactose, fructose, sugar alcohols such as mannitol, xylitol, maltitol, erythritol, sorbitol, gelatin, pullulan, carrageenan, locust bean gum, agar, gluconannan, xanthan gum, tamarind Water-soluble polysaccharides such as gum, pectin, sodium alginate, gum arabic, etc., celluloses such as crystalline cellulose, powdered cellulose, hydroxypropylcellulose, methylcellulose, corn starch, potato starch, pregelatinized starch, starches such as starch paste, polyvinyl Synthetic polymers such as pyrrolidone, carboxyvinyl polymer, polyvinyl alcohol, calcium hydrogen phosphate, calcium carbonate, synthetic hydrotalcite, aluminate silicate Neshiumu inorganic compounds such as such as "Pharmaceutical Excipients Dictionary"
- Fluidizers include “hydrous silicon dioxide”, silicon compounds such as light anhydrous silicic acid, etc., sodium silicate wet silica, calcium silicate, sodium stearyl fumarate (trade name “PRUV” manufactured by JRS), etc. It is classified and listed as a fluidizing agent in the “Encyclopedia” (published by Yakuji Nipposha).
- Lubricants include “Pharmaceutical Additives Encyclopedia” such as magnesium stearate, calcium stearate, stearic acid, sucrose fatty acid ester, talc, Fujicalin, sodium stearyl fumarate (trade name “PRUV” manufactured by JRS) Can be classified as lubricants.
- Perfumes include orange, vanilla, strawberry, yogurt, menthol, fennel oil, cinnamon oil, spruce oil, mint oil, and other “pharmaceutical additives” (published by Yakuji Nippo Co., Ltd.). The thing classified as a flavoring agent and a fragrance
- Coloring agents include food colorings such as Food Red No. 3, Food Yellow No. 5, Food Blue No. 1, etc., “Pharmaceutical Additives Encyclopedia” such as copper chlorofin sodium, titanium oxide and riboflavin (published by Yakuji Nippo Co., Ltd.) Are classified as colorants.
- sweeteners those classified as sweeteners in “Pharmaceutical Additives Encyclopedia” (published by Yakuji Nippo Co., Ltd.) such as aspartame, saccharin, dipotassium gilicyrrhizinate, stevia, maltose, maltitol, chickenpox, and amacha powder Can be mentioned.
- the form of the molded body includes tablets, powders, fine granules, granules, solid preparations of pills and the like when used for pharmaceuticals.
- Tablet refers to a molded article obtained by tableting, containing the composite particles of the present embodiment, an active ingredient, and other additives as required. Since the composite particles of this embodiment are excellent in compression moldability, a practical tablet can be obtained at a relatively low compression pressure. Since it can be molded and compressed with a low compression pressure, it is suitable for orally disintegrating tablets that can maintain voids (water conduits) in the tablet and rapidly disintegrate in the oral cavity. In addition, the composite particles of the present embodiment are also suitable for multilayer tablets and dry-coated tablets that are compression-molded with components of several types in one or other stages, and impart excellent hardness to the molded body. The effect of suppressing tableting failure and suppressing delamination and cracking between layers is high. Furthermore, since the composite particles of the present embodiment are excellent in the splitting property of the particles themselves, it is easy to divide the tablet uniformly and is also suitable for scored tablets and the like.
- the composite particles of the present embodiment have a porous structure, and the composite particles themselves are excellent in the retention of liquid components such as fine particle drugs, suspension drugs, and solution components.
- This molded article is also excellent in liquid component retention. Therefore, when a suspension or solution-like component is layered and coated on a tablet, there is also an effect of preventing peeling of an outer layer such as a coating layer. Therefore, the composite particles of the present embodiment are also suitable for layered tablets and tablets having a coating layer (such as sugar-coated tablets and tablets laminated with components such as calcium carbonate).
- Examples of the molding method of the molded body include a method in which the active ingredient and the composite particles of the present embodiment are mixed and then compression molded. At this time, in addition to the active ingredient, the above-described additives may be blended as necessary.
- molding method is mentioned. 1) A method in which the active ingredient, the composite particles of the present embodiment, and additives as necessary are mixed together and compression molded. 2) A method in which an active ingredient and an additive such as a fluidizing agent or a lubricant are mixed, and then the composite particles of the present invention are mixed with an additive as necessary, followed by compression molding. 3) A method of compression molding after further adding a lubricant to the mixed powder for compression molding obtained in 1) or 2) and mixing.
- the method for adding each component is not particularly limited as long as it is a commonly used method, but it is a small suction transport device, pneumatic transport device, bucket conveyor, pressure transport device, vacuum conveyor, vibratory quantitative feeder, spray, funnel Or the like may be added continuously or in a batch.
- the mixing method is not particularly limited as long as it is a conventional method, but a container rotary mixer such as a V type, a W type, a double cone type, a container tack type mixer, or a high speed stirring type, a universal stirring type. Further, a stirring type mixer such as a ribbon type, a pug type or a Nauter type mixer, a high-speed flow type mixer, a drum type mixer or a fluidized bed type mixer may be used. A shaker mixer such as a shaker can also be used.
- the compression molding method is not particularly limited as long as it is a conventional method, but a method of compression molding into a desired shape using a mortar and a pestle, a method of compression molding into a sheet shape in advance and then cleaving into a desired shape But you can.
- a roller press such as a hydrostatic press, a briquetting roller press, a smooth roller press, a compressor such as a single punch tablet press, or a rotary tablet press can be used. .
- the following compression molding method is generally mentioned.
- A) A method in which the active ingredient is pulverized and then compression-molded by mixing the composite particles of this embodiment and other ingredients as required.
- the composite particles of this embodiment are suitable for the method B).
- the active ingredient that is hardly soluble or insoluble in water is once dissolved or dispersed, so that the active ingredient can be firmly supported on the composite particles.
- the composite particles of the present embodiment have high compression moldability and fluidity, even in the case of B), tablets with small weight variation can be obtained by compression molding.
- the method B) is more preferable when the active ingredient is a drug used for pharmaceuticals and a liquid medium such as polyethylene glycol is used in combination as a medium to be dispersed.
- a liquid medium such as polyethylene glycol is used in combination as a medium to be dispersed.
- Polyethylene glycol or the like is used because the active ingredient is coated with polyethylene glycol in the blood when the active ingredient is absorbed into the body, thereby maintaining the medicinal properties of the active ingredient that is easily metabolized in the liver. The purpose is that.
- the method B in order to assist dissolution, it is effective to use a water-soluble polymer or a surfactant in combination as a solubilizing agent and to disperse it in a medium.
- the organic solvent is not particularly limited as long as it is used in pharmaceuticals.
- the “Pharmaceutical Additives Encyclopedia” such as alcohols such as methanol and ethanol, and ketones such as acetone (Pharmaceutical Daily) can be classified as a solvent and can be used in combination of two or more.
- examples of the water-soluble polymer as a solubilizer include hydroxypropylcellulose, hydroxypropylmethylcellulose, polyacrylic acid, carboxyvinyl polymer, polyethylene glycol, polyvinyl alcohol, polyvinylpyrrolidone, methylcellulose, ethylcellulose, Water-soluble polymers described in “Pharmaceutical Additives Encyclopedia” (published by Yakuji Nippo Co., Ltd.) such as gum arabic and starch paste can be mentioned, and two or more kinds can be used in combination.
- fats and oils as solubilizing agents include stearic acid monoglyceride, stearic acid triglyceride, stearic acid sucrose ester, paraffins such as liquid paraffin, hardened oils such as carnauba wax and hardened castor oil, castor oil, stearic acid, stearyl
- paraffins such as liquid paraffin
- hardened oils such as carnauba wax and hardened castor oil, castor oil, stearic acid, stearyl
- examples include fats and oils described in “Pharmaceutical Additives Encyclopedia” (published by Yakuji Nippo Co., Ltd.) such as alcohol and polyethylene glycol, and two or more types can be used together.
- surfactant in the solubilizer for example, phospholipid, glycerin fatty acid ester, polyethylene glycol fatty acid ester, sorbitan fatty acid ester, polyoxyethylene hydrogenated castor oil, polyoxyethylene cetyl ether, polyoxyethylene stearyl ether, polyoxyethylene Nonylphenyl ether, polyoxyethylene polyoxypropylene glycol, polyoxyethylene sorbitan san monolaurate, polysorbate, sorbitan monooleate, glyceride monostearate, monooxyethylene sorbitan monopalmitate, monooxyethylene sorbitan monostearate, mono Pharmaceutical additives such as polyoxyethylene sorbitan oleate, sorbitan monopalmitate, sodium lauryl sulfate Dian "(Yakujinipposha Corporation published) those classified as a surfactant is listed, it is free to combination of two or more.
- the dissolution or dispersion method is not particularly limited as long as it is a commonly used dissolution and dispersion method, but is a one-way rotary type such as a portable mixer, a three-dimensional mixer, a side mixer, a multi-axis rotary type, Reciprocating reversal type, vertical movement type, rotation + vertical movement type, stirring type mixing method using pipe type, jet type stirring mixing method such as line mixer, gas blowing type stirring mixing method, high shear homogenizer, A mixing method using a high-pressure homogenizer, an ultrasonic homogenizer, or the like, or a container-shaking mixing method using a shaker may be used.
- a one-way rotary type such as a portable mixer, a three-dimensional mixer, a side mixer, a multi-axis rotary type, Reciprocating reversal type, vertical movement type, rotation + vertical movement type, stirring type mixing method using pipe type, jet type stirring mixing method such as line mixer, gas blowing type stirring mixing method, high shear homo
- the composite particles of the present embodiment have a porous structure and the composite particles themselves are excellent in drug retention, even if the particles in which the drug is supported in the pores are used directly as fine granules, They may be used as granules or they may be compression molded.
- the method for loading the drug is not particularly limited as long as it is a known method, and examples thereof include the following methods. i) A method of loading the fine particles in the pores of the composite particles of the present embodiment by mixing with a fine drug. ii) A method of forcibly loading by mixing at high speed with a powdered drug. iii) A method of once mixing with a drug once made into a solution or dispersion and carrying it, followed by drying if necessary. iv) A method of mixing with a sublimable drug and sublimating and adsorbing it in the pores by heating and / or reducing the pressure. v) A method of mixing and melting the drug before or during heating.
- the above methods may be used in combination of two or more.
- the composite particles of the present embodiment are excellent in retention of solid and liquid components, and in particular to improve fluidity, blocking resistance, and aggregation resistance May be used as granules or powders.
- the fine grains and granules described above may be further coated.
- the same effect can be obtained by using any of dry granulation, wet granulation, heat granulation, spray drying, and microencapsulation.
- the composite particles of the present embodiment have moderate water retention and oil retention, they can be used as core particles for layering and coating in addition to excipients. There is an effect to suppress.
- Layering and coating may be a dry method or a wet method.
- the composite particles of the present embodiment are also used for foods such as confectionery, health foods, texture improvers, dietary fiber reinforcing agents, solid foundations, bathing agents, animal drugs, diagnostic agents, agricultural chemicals, fertilizers, ceramic catalysts, and the like.
- the present invention will be described based on examples. However, the embodiment of the present invention is not limited to the description of these examples.
- the measuring method of each physical property in an Example and a comparative example is as follows.
- Average width of cellulose ( ⁇ m) Cellulose primary particles made of natural cellulose are dried if necessary, placed on a sample table with a carbon tape, and platinum palladium is vacuum-deposited (the film thickness of the deposited film is 20 nm or less). Using JSM-5510LV (trade name) manufactured by Co., Ltd., an observation was performed at an acceleration voltage of 6 kV and a magnification of 250 times, and the size of the major axis of the cellulose particles was regarded as a representative width and the size was measured. The width of three representative cellulose primary particles was measured, and the average value was defined as the average width of cellulose.
- the volume average particle diameter measured by laser diffraction is measured from the volume frequency depending on the long diameter of the fibrous particles, whereas the weight average particle diameter obtained by the low tap method is obtained by sieving the obtained powder. Since it is shaken and fractionated, it depends on the short diameter of the fibrous particles. Therefore, the laser diffraction type depending on the long diameter of the fibrous particles may have a larger value than the low tap type depending on the short diameter of the fibrous particles.
- Weight average particle diameter of composite particles ( ⁇ m)
- the weight average particle size of the powder sample (dried composite particles) was measured using a low-tap type sieve shaker (trade name “Sieve Shaker A type” manufactured by Hira Kogakusho), JIS standard sieve (Z8801-1987).
- the particle size distribution was measured by sieving 10 g for 10 minutes and expressed as a 50% cumulative weight particle size.
- the particle size distribution was determined using 300 ⁇ m, 212 ⁇ m, 177 ⁇ m, 150 ⁇ m, 106 ⁇ m, 75 ⁇ m, and 38 ⁇ m as the size of the sieve.
- Pore diameter ( ⁇ m), pore volume in particles (cm 3 / g), porosity (%) The pore distribution was determined by mercury porosimetry using a product name “Autopore 9520 type” manufactured by Shimadzu Corporation. About 0.03 g to 0.05 g of each sample powder used for measurement was collected in a standard cell and measured twice under conditions of an initial pressure of 7 kPa (about 1 psia, pore diameter of about 18 ⁇ m). From the obtained pore distribution, the volume in a specific range of the pore diameter of 0.003 to 1.0 ⁇ m was calculated as the pore volume.
- the porosity is the ratio of the pore volume to the sample volume when mercury is injected into pores having a diameter of about 180 ⁇ m with respect to the initial atmospheric pressure.
- Weight CV value (standard deviation / average value) ⁇ 100 [%] was defined from the average value and standard deviation of the measured values.
- weight CV value is large, the weight variation is large, leading to an increase in drug content variation and a decrease in product yield.
- the weight CV value is larger than 1.0%, there is a practical problem.
- SEM Scanning electron micrograph
- Example 1 4.5 kg of hardwood pulp that has been subjected to known pulping treatment and bleaching treatment (average width of cellulose primary particles is about 19 ⁇ m and average thickness is about 3 ⁇ m) is 4.5 kg and 30% of 0.2% hydrochloric acid aqueous solution was stirred in a low-speed stirrer (Ikebukuro Sakai Kogyo Co., Ltd., trade name, 30LGL reactor) and stirred at 124 ° C. for 1 hour to obtain an acid-insoluble residue (hereinafter referred to as “Wet cake”). .
- a low-speed stirrer Ikebukuro Sakai Kogyo Co., Ltd., trade name, 30LGL reactor
- the volume average particle size of the cellulose particles was 25 ⁇ m as a result of measurement with a laser diffraction / scattering particle size distribution analyzer (trade name “LA-910”, manufactured by Horiba, Ltd.) and a refractive index of 1.20. It was.
- Examples 2 and 3 4.5 kg of hardwood pulp that has been subjected to known pulping treatment and bleaching treatment (average width of cellulose primary particles is about 19 ⁇ m and average thickness is about 3 ⁇ m) is 4.5 kg and 30% of 0.2% hydrochloric acid aqueous solution was stirred in a low-speed stirrer (Ikebukuro Sakai Kogyo Co., Ltd., trade name, 30LGL reactor) and stirred at 124 ° C. for 1 hour to obtain an acid-insoluble residue (hereinafter referred to as “Wet cake”). .
- a low-speed stirrer Ikebukuro Sakai Kogyo Co., Ltd., trade name, 30LGL reactor
- the volume average particle size of the cellulose particles was 25 ⁇ m as a result of measurement using a laser diffraction / scattering particle size distribution analyzer (trade name “LA-910” manufactured by Horiba, Ltd.) and a refractive index of 1.20. It was.
- Purified water is introduced into a poly bucket, and while stirring with a 3-1 motor, starch (product name “SWELSTAR” WB-1 manufactured by Asahi Kasei Chemicals) is added and mixed, and then a wet cake is added and mixed.
- Calcium silicate manufactured by Tokuyama Corporation, trade name: Fluorite R, volume average particle size 25 ⁇ m was added and mixed. The mass ratio was 10/20/70 (based on solid content) of starch / cellulose / calcium silicate, and the total solid content concentration was about 8.5% by mass (pH was 10.2).
- Examples 4 and 5 4.5 kg of hardwood pulp that has been subjected to known pulping treatment and bleaching treatment (average width of cellulose primary particles is about 19 ⁇ m and average thickness is about 3 ⁇ m) is 4.5 kg and 30% of 0.2% hydrochloric acid aqueous solution was stirred in a low-speed stirrer (Ikebukuro Sakai Kogyo Co., Ltd., trade name, 30LGL reactor) and stirred at 124 ° C. for 1 hour to obtain an acid-insoluble residue (hereinafter referred to as “Wet cake”). .
- a low-speed stirrer Ikebukuro Sakai Kogyo Co., Ltd., trade name, 30LGL reactor
- the volume average particle size of the cellulose particles was 25 ⁇ m as a result of measurement with a laser diffraction / scattering particle size distribution analyzer (trade name “LA-910”, manufactured by Horiba, Ltd.) and a refractive index of 1.20. It was.
- SiO 2 trade name: Aerosil 200, manufactured by Nippon Aerosil Co., Ltd.
- Table 2 shows the physical properties of calcium silicate (trade name: Fluorite R, volume average particle size 25 ⁇ m, manufactured by Tokuyama Corporation) alone.
- silicon dioxide made by Tokuyama, trade name, fine seal, volume average particle size 5 ⁇ m
- silicon dioxide is used in a quantity ratio of 30/70 (based on solid content) in a 90-liter poly bucket. And added with pure water to a total solid concentration of 20% by weight and neutralized with ammonia water while stirring with a 3-1 motor (pH after neutralization was 7.5 to 8.0).
- Table 2 shows various physical properties of the composite particles S.
- the composite particles K of Example 11 (FIG. 7) and the composite particles M of Example 13 (see FIG. 8) have irregularities on the surface.
- Ibuprofen is a representative example of a drug that is easy to stick. Using this, the anti-sticking effect was compared.
- Granules containing ibuprofen used for evaluation were prepared by the following method.
- a granulated granule was sieved with a sieve opening of 710 ⁇ m to obtain a test sample (hereinafter referred to as a granulated granule).
- Example 18 88% by mass of the granulated granules, 2% by mass of croscarmellose sodium (manufactured by Nichirin Chemical Co., Ltd., “Kickolate” ND-2HS) and 10% by mass of the composite particles C of Example 3 were mixed in a polyethylene bag for 3 minutes. Next, 0.5 mass% of magnesium stearate (manufactured by Taihei Chemical Industry Co., Ltd.) was added to the total weight of the mixed powder, and further slowly mixed for 30 seconds.
- magnesium stearate manufactured by Taihei Chemical Industry Co., Ltd.
- the mixed powder was subjected to a rotary tableting machine (CLEANPRESS CORRECT 12HUK, manufactured by Kikusui Seisakusho Co., Ltd.) with a 0.8 cm diameter, 12R punch, a turntable rotation speed of 54 rpm, a tableting pressure of 5 to 15 kN, and open feed conditions.
- a rotary tableting machine (CLEANPRESS CORRECT 12HUK, manufactured by Kikusui Seisakusho Co., Ltd.) with a 0.8 cm diameter, 12R punch, a turntable rotation speed of 54 rpm, a tableting pressure of 5 to 15 kN, and open feed conditions.
- Table 3 shows the physical properties of the tablets.
- Example 19 The same operation as in Example 18 was performed except that the composite particle C of Example 18 was changed to the composite particle H of Example 8. Table 3 shows the physical properties of the tablets.
- Example 7 The same operation as in Example 18 was carried out except that the composite particle C of Example 18 was light anhydrous silicic acid (Nippon Aerosil Co., Ltd., Aerosil 200). Table 3 shows the physical properties of the tablets.
- Example 8 The same operation as in Example 18 was performed except that the composite particle C of Example 18 was changed to the composite particle S of Comparative Example 3. Table 3 shows the physical properties of the tablets.
- Example 9 The same operation as in Example 18 was performed except that the composite particle C of Example 18 was changed to the composite particle T of Comparative Example 4. Table 3 shows the physical properties of the tablets.
- Example 10 (Comparative Example 10) The same operation as in Example 18 was performed except that the composite particle C of Example 18 was changed to the mixture U of Comparative Example 5. Table 3 shows the physical properties of the tablets.
- Example 11 The same operation as in Example 18 was performed except that the composite particle C of Example 18 was changed to the mixture V of Comparative Example 6. Table 3 shows the physical properties of the tablets.
- Examples 18 and 19 tablets having a practical hardness of 50 N or more, a weight CV value of 1.0% or less, and no tableting trouble (sticking, capping) were obtained.
- a tableting failure no sticking, but 2 capping
- the weight CV value exceeds 1.0%, which is not practical.
- Comparative Examples 8 to 11 since the weight CV value exceeds 1.0% and tableting troubles (sticking and capping) are remarkable, they are not put to practical use.
- the impact pressure 15 kN of Comparative Example 9 is 50N or higher in practical hardness, but the friability is 0.8%, which does not satisfy the practical level of 0.5% or less.
- ⁇ Emulsified liquid preparation method 360 g of RIKEN Tocopherol Acetate (RIKEN Vitamin), which is a liquid active ingredient, Tween 80 (Wako Pure Chemical Industries), and 1000 g of pure water are weighed and mixed with a TK homomixer (Primics MARK2 2.5 type) at 10,000 rpm for 15 minutes. Then, an emulsion was prepared.
- RIKEN Vitamin RIKEN Vitamin
- Tween 80 Wi-Wako Pure Chemical Industries
- Example 20 While putting 360 g of the composite particles C of Example 3 into a vertical granulator (FM-VG-10P, manufactured by POWREC Co., Ltd.) and mixing them under the conditions of blade 200 rpm and chopper 2100 rpm, After putting in seconds, it was granulated for 6 minutes and discharged. Next, after drying with an oven (Espec oven PV-211, manufactured by Tabai Co., Ltd.), a dried product that passed through a sieve (Iida Seisakusho, test sieve) having a mesh opening of 710 ⁇ m was used as a test sample (hereinafter referred to as VE granules). ). The angle of repose of the VE granules was good at 35 °.
- VE granules 35% by mass, crystalline cellulose (manufactured by Asahi Kasei Chemicals Corporation, UF-711) 45% by mass, anhydrous calcium hydrogen phosphate (Fuji Chemical Co., Ltd., Fujicalin) 18% by mass, croscarmellose sodium (Nichirin) 2% by mass of “Kikikolate” ND-2HS, manufactured by Chemical Co., Ltd., was mixed in a polyethylene bag for 3 minutes. Next, 2.0 mass% magnesium stearate (manufactured by Taihei Chemical Sangyo Co., Ltd.) was added with respect to the total weight of the mixed powder, and further slowly mixed for 30 seconds.
- this mixed powder is punched using a 0.8 cm diameter, 12R punch with a turntable rotation speed of 30 rpm, tableting pressure of 2 to 7 kN, and open feed. Tablets were prepared with a weight of 200 mg. Table 4 shows the physical properties of the tablets.
- Example 12 The composite particles C were the same as in Example 20 except that calcium silicate (trade name: Fluorite Grade (R), volume average particle diameter (measured in an aggregated state) 25 to 30 ⁇ m, manufactured by Tokuyama Corporation) was used. Operated. Table 4 shows the physical properties of the tablets. The angle of repose of the VE granule was 41 °, and the fluidity was inferior to that when the composite particle C was used.
- calcium silicate trade name: Fluorite Grade (R)
- R volume average particle diameter (measured in an aggregated state) 25 to 30 ⁇ m, manufactured by Tokuyama Corporation
- Example 13 The same operation as in Example 20 was performed except that the composite particle C was changed to the composite particle S.
- Table 4 shows the physical properties of the tablets.
- Example 14 The same operation as in Example 20 was performed except that the composite particle C was changed to the mixture U.
- Table 4 shows the physical properties of the tablets.
- Example 20 a tablet having a practical hardness of 50N or more, a weight CV value of 1.0% or less, and no tableting trouble (sticking, capping) was obtained.
- Comparative Example 12 the sticking occurrence rate does not become 0 at all tableting pressures, and is not practically used.
- Comparative Examples 13 and 14 the tocopherol acetate retention rate was low and could not be pulverized.
- the composite particles of the present invention are extremely excellent in moldability and fluidity, when used as an excipient mainly in the pharmaceutical field in the production of a molded body containing various active ingredients, mixing with the active ingredients is uniform.
- the moldability and fluidity of the particles can be kept high even after holding the liquid, so that it is possible to prevent tableting troubles.
- the molded product of the present invention has little weight variation, excellent content uniformity of active ingredients, sufficient hardness, and low friability.
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Abstract
Description
(1)セルロースと無機化合物を含有し、見掛け比容積が7~13cm3/gであることを特徴とする複合粒子。
(2)セルロースの平均幅が2~30μm、平均厚みが0.5~5μmである(1)に記載の複合粒子。
(3)セルロースが10~60質量部、無機化合物が40~90質量部を含有する(1)又は(2)に記載の複合粒子。
(4)無機化合物が、含水二酸化ケイ素、軽質無水ケイ酸、合成ケイ酸アルミニウム、水酸化アルミナマグネシウム、メタケイ酸アルミン酸マグネシウム、ケイ酸アルミン酸マグネシウム、ケイ酸カルシウム、含水無水晶形酸化ケイ素、ケイ酸マグネシウム、及び含水ケイ酸マグネシウムからなる群から選ばれる少なくとも1種である(1)~(3)のいずれか1つに記載の複合粒子。
(5)無機化合物がケイ酸カルシウムである(1)~(4)のいずれか1つに記載の複合粒子。
(6)細孔径が0.003~1μmであり、細孔容積が1.9~3.9cm3/gである(1)~(5)のいずれか1つに記載の複合粒子。
(7)酢酸トコフェロール保持率が500~1000%である(1)~(6)のいずれか1つに記載の複合粒子。
(8)重量平均粒径が30~250μmである(1)~(7)のいずれか1つに記載の複合粒子。
(9)さらにデンプンを含む(1)~(8)のいずれか1つに記載の複合粒子。
(10)(1)~(9)のいずれか1つに記載の複合粒子と、活性成分とを含む成型体。
(11)活性成分が医薬用成分又は、健康食品用成分である(10)に記載の成型体。
(12)セルロースと無機化合物を含有する複合粒子、及び活性成分を含み、該活性成分が、25℃における粘度が3~10000mPa・sの液体であり、該活性成分を1成型体500mg当り105~250mg含む成型体。
(13)液体成分が酢酸トコフェロールである(12)に記載の成型体。
本発明におけるセルロースには、結晶セルロースも含まれ、本発明で使用される結晶セルロースとは、白色の結晶性粉末であり、繊維性植物からパルプとして得たα-セルロースを鉱酸で部分的に解重合し、精製したものである。また、結晶セルロースには様々なグレードがあるが、本発明においては、重合度が100~450を示す結晶セルロースが好ましい。市販品としては「セオラス」PHグレード、KGグレード、UFグレード(いずれも旭化成ケミカルズ(株)製)などが使用でき、最も好ましくはUFグレードである。
i)セルロースに、剪断、摩砕、破砕、粉砕を加え粒子径を調整する方法。
ii)セルロースに、爆砕処理等の高圧処理を施し、セルロース粒子を長軸方向に分割し、必要に応じて、剪断力を与え粒子径を調整する方法。
iii)セルロースを、化学処理することにより調整する方法。
i)セルロースと無機化合物を混合したものを媒体に添加し分散液とする方法。
ii)セルロース分散液に無機化合物を添加し分散液とする方法。
iii)でんぷん等の第3成分とセルロース粒子を混合した分散液に無機化合物を添加し分散液とする方法。
iv)でんぷん等の第3成分とセルロース分散液を混合したものに無機化合物を添加し分散液とする方法。
v)無機化合物を添加した分散液に、セルロースを添加して分散液とする方法。
1)活性成分と本実施形態の複合粒子と必要に応じて添加剤を一括混合して圧縮成型する方法。
2)活性成分と、流動化剤又は滑沢剤等の添加剤を混合した後、本発明の複合粒子と必要に応じてさらに添加剤を混合した後、圧縮成型する方法。
3)1)又は2)により得られた圧縮成型用混合末に、さらに滑沢剤を添加して混合した後に、圧縮成型する方法。
A)活性成分に粉砕を施した後、本実施形態の複合粒子と必要に応じてその他の成分とを混合して圧縮成型する方法。
B)活性成分を水、有機溶媒又は溶解補助剤等に、溶解又は分散させた後、本実施形態の複合粒子と必要に応じて他の添加剤と混合して、必要に応じて水又は有機溶媒を留去し、圧縮成型する方法。
i)微粒子状薬物と混合することで、本実施形態の複合粒子の細孔内に担持させる方法。
ii)粉末状薬物と高速で混合することで、強制的に担持させる方法。
iii)一旦溶液又は分散液とした薬物と混合し、担持させた後、必要に応じ乾燥する方法。
iv)昇華性の薬物と混合し、加熱及び/又は減圧することで細孔内に昇華吸着させる方法。
v)加熱前又は加熱中に薬物と混合し、溶融させる方法。
天然セルロースからなるセルロースの一次粒子を、必要に応じて乾燥し、カーボンテープを貼った試料台に載せ、白金パラジウムを真空蒸着(この際の蒸着膜の膜厚は20nm以下)し、日本分光(株)製JSM-5510LV(商品名)を使用し、加速電圧6kV、倍率250倍で観察し、セルロース粒子の長径の中央付近の短径を代表的な幅とみなし大きさを測定した。代表的なセルロース一次粒子3個について幅を測定し、その平均値をセルロースの平均幅とした。
天然セルロースからなるセルロース一次粒子を、必要に応じて乾燥し、カーボンテープを貼った試料台に載せ、金を真空蒸着した後、集束イオンビーム加工装置(日立製作所(株)製、FB-2100(商品名))を使用し、Gaイオンビームにより、セルロース一次粒子の断面を切り出した後、加速電圧6kV、倍率1500倍で観察し、セルロース粒子断面の短い方の径の値を厚みとして測定した(長い方の径の値が、セルロース粒子の短径に相当するように切り出した)。代表的なセルロース一次粒子3個について厚みを測定し、その平均値をセルロースの厚みとした。
セルロースまたは無機化合物を水で分散した分散液を、レーザー回折式粒度分布計(堀場製作所製、LA-910(商品名))を使用し、測定モードとして攪拌4及び循環5を選択し、透過率85%付近、超音波処理1分、屈折率1.20で測定した累積体積50%粒子として表した。ただし、この測定値は、以下のロータップ式で得られる乾燥粒子の粒度分布と測定原理が全く異なるため、必ずしも相関するものではない。レーザー回折により測定される体積平均粒子径は、繊維状粒子の長径に依存する体積頻度から測定されるものであるのに対し、ロータップ式で得られる重量平均粒子径は、得られた粉末を篩上で振とうさせて分画するため、繊維状粒子の短径に依存するものである。従って、繊維状粒子の長径に依存するレーザー回折式の方が、繊維状粒子の短径に依存するロータップ式に対し、大きい値となる場合がある。
粉体試料(乾燥した複合粒子)の重量平均粒径は、ロータップ式篩振盪機(平工作所製、商品名「シーブシェーカーA型」)、JIS標準篩(Z8801-1987)を用いて、試料10gを10分間篩分することにより粒度分布を測定し、累積重量50%粒径として表した。粒度分布は、篩のサイズとして300μm、212μm、177μm、150μm、106μm、75μm、38μmを用いて求めた。
島津製作所(株)製、商品名「オートポア9520型」を用い、水銀ポロシメトリーによって、細孔分布を求めた。測定に用いた各試料粉体は、約0.03gから0.05gを標準セルに採取し、初期圧7kPa(約1psia、細孔直径約18μm相当)の条件で2回測定した。得られた細孔分布から、細孔径の特定範囲0.003~1.0μmにおける容積を細孔容積として計算した。また、気孔率は、初気圧に対して、直径約180μmの細孔まで水銀が圧入された時の試料体積に対する細孔容積の割合である。
杉原式安息角測定器(スリットサイズ奥行10x幅50x高さ140mm、幅50mmの位置に分度器を設置)を使用し、電磁式フィーダー(MF-1型/筒井理化)で試料を少量(目安3g/分)ずつ測定部に連続して堆積することで斜面をつくる。余剰の試料が落ち始め、ほぼ直線状になったら直ちにフィーダーのスイッチを切り、設置してある分度器で測定した斜面の角度を安息角とした。
各試料を0.5g計りとり、臼(菊水製作所製、材質SUS2,3を使用)に入れ、直径1.1cmの円形平面杵(菊水製作所製、材質SUS2,3を使用)で圧力が10MPaになるまで圧縮し(アイコーエンジニアリング製、商品名「PCM-1A」、圧縮速度1cm/分)、目標圧で10秒間保持することで、円柱状成型体が作成できる。
円柱状成型体或いは錠剤をシュロインゲル硬度計(フロイント産業(株)製、商品名「8M型」)を用いて、円柱状成型体或いは錠剤の直径方向に荷重を加え、破壊した時の荷重を測定した。試料10個の平均値で表した。
25cm3の容器を、スコットボリュメータ(VWR SCIENTIFIC社製、S64985型)に設置する。次に、電磁式フィーダー(MF-1型/筒井理化)を用いて、各試料を、10~20g/分の速度で投入する。セットした容器から、試料が溢れたら、容器を取り出し、過量分をすり落とし、試料質量を測定する。容器の体積(25cm3)を、試料質量で割った値(cm3/g)が見掛け比容積である。試料2回測定の平均値で表した。
各試料を2g計りとり、試料を捏ねながら酢酸トコフェロール(25℃の粘度:3300mPa・s)を、少量ずつ滴下し、表面に液が滲み出る量を終点とした。酢酸トコフェノール保持率は、下記の式で表される。
酢酸トコフェロール保持率(%)=滴下した液量g/試料2g×100
測定値は、試料2個の平均値で表した。
打錠後の錠剤50個を任意にサンプリングし、クラックや一部剥離している錠剤の個数を数えた。
錠剤50個を目視で検査し、錠剤の表面に剥離等、欠損があるものを数えた。スティッキングが見られた錠剤の個数の割合をスティッキング発生率(%)とした。
打錠後の錠剤10個を任意にサンプリングしたものの重量を測定し、その測定値の平均値及び標準偏差より、重量CV値=(標準偏差/平均値)×100[%]と定義した。重量CV値が大きいと、重量バラツキが大きく、薬物の含量バラツキの増加、製品収率の低下につながる。重量CV値が1.0%よりも大きい場合、実用上問題がある。
電子顕微鏡(日本電子(株)製、JSM-551OLV型)を用いて、測定を行った。試料を試料移動台に取付け、金蒸着法(AUTO FINE COATER、日本電子(株)製、JFC-1600型)により試料表面に金属粒子を薄く一様に被覆する。その後、試料室に取付け、試料室内を真空にして試料位置に電子線を照射し、観察したい部分の拡大像を出力した。
(15)平均重合度
第14改正日本薬局方、結晶セルロースの確認試験(3)に記載された銅エチレンジアミン溶液粘度法により測定した値。
(16)水分散状態のセルロース粒子のL/D
水分散状態のセルロース粒子の平均L/Dは以下のように測定した。セルロースの水分散液をJIS標準篩(Z8801-1987)を用いて、75μm篩を通過し38μm篩に残留する粒子について、粒子の光学顕微鏡像を画像解析処理し((株)インタークエスト製、装置:Hyper700,ソフトウエア:Imagehyper)、粒子に外接する長方形のうち面積が最小となる長方形の長辺と短辺の比(長辺/短辺)を粒子のL/Dとした。粒子の平均L/Dとしては少なくとも粒子100個の平均値を用いた。
広葉樹を公知のパルプ化処理、漂白処理を施したパルプ(セルロース一次粒子の平均幅は約19μm、平均厚みは約3μm)を細断したものを4.5kgと、0.2%の塩酸水溶液30Lを低速型攪拌機(池袋琺瑯工業(株)製、商品名、30LGL反応器)に入れ攪拌しながら、124℃で1時間加水分解し、酸不溶解性残渣(以降Wetケークと記す)を得た。セルロース粒子の体積平均粒子径は、レーザー回析/散乱式粒度分布測定装置((株)堀場製作所製、商品名「LA-910」)、屈析率1.20で測定した結果、25μmであった。
広葉樹を公知のパルプ化処理、漂白処理を施したパルプ(セルロース一次粒子の平均幅は約19μm、平均厚みは約3μm)を細断したものを4.5kgと、0.2%の塩酸水溶液30Lを低速型攪拌機(池袋琺瑯工業(株)製、商品名、30LGL反応器)に入れ攪拌しながら、124℃で1時間加水分解し、酸不溶解性残渣(以降Wetケークと記す)を得た。セルロース粒子の体積平均粒子径は、レーザー回析/散乱式粒度分布測定装置((株)堀場製作所製、商品名「LA-910」)、屈析率1.20で測定した結果、25μmであった。
広葉樹を公知のパルプ化処理、漂白処理を施したパルプ(セルロース一次粒子の平均幅は約19μm、平均厚みは約3μm)を細断したものを4.5kgと、0.2%の塩酸水溶液30Lを低速型攪拌機(池袋琺瑯工業(株)製、商品名、30LGL反応器)に入れ攪拌しながら、124℃で1時間加水分解し、酸不溶解性残渣(以降Wetケークと記す)を得た。セルロース粒子の体積平均粒子径は、レーザー回析/散乱式粒度分布測定装置((株)堀場製作所製、商品名「LA-910」)、屈析率1.20で測定した結果、25μmであった。
質量比を、でんぷん/セルロース/ケイ酸カルシウム=5/40/55(固形分ベース)、としたこと以外は、実施例2、3と同様にして、複合粒子F(アトマイザー回転数15000rpm)、G(アトマイザー回転数30000rpm)を得た。複合粒子F、Gの諸物性を表1に示す。
質量比を、でんぷん/セルロース/ケイ酸カルシウム=7/43/50(固形分ベース)、全固形分濃度を9.3質量%としたこと以外は、実施例2、3と同様にして、複合粒子H(アトマイザー回転数15000rpm)、I(アトマイザー回転数30000rpm)を得た。複合粒子H、Iの諸物性を表1に示す。
質量比を、セルロース/ケイ酸カルシウム=60/40(固形分ベース)、全固形分濃度を11.7質量%としたこと以外は、実施例4、5と同様にして、複合粒子J(アトマイザー回転数15000rpm)、K(アトマイザー回転数30000rpm)を得た。複合粒子J、Kの諸物性を表1に示す。
質量比を、でんぷん/セルロース/ケイ酸カルシウム=3/60/37(固形分ベース)、全固形分濃度を11.7質量%、アトマイザー回転数を8000rpm、30000rpmとしたこと以外は、実施例2、3と同様にして、複合粒子L(アトマイザー回転数8000rpm)、M(アトマイザー回転数30000rpm)を得た。複合粒子L、Mの諸物性を表1に示す。
質量比を、でんぷん/セルロース/ケイ酸カルシウム=2.5/72.5/25(固形分ベース)、全固形分濃度を11.7質量%としたこと以外は、実施例2と同様にして、複合粒子N(アトマイザー回転数15000rpm)を得た。複合粒子Nの諸物性を表1に示す。
質量比を、セルロース/軽質無水ケイ酸=50/50(固形分ベース)、全固形分濃度を4質量%としたこと以外は、実施例5と同様にして、複合粒子O(アトマイザー回転数30000rpm)を得た。複合粒子Oの諸物性を表1に示す。
質量比を、セルロース/メタケイ酸アルミン酸マグネシウム=30/70(固形分ベース)、全固形分濃度を5質量%としたこと以外は、実施例4と同様にして、複合粒子P(アトマイザー回転数15000rpm)を得た。複合粒子Pの諸物性を表1に示す。
質量比を、セルロース/含水ケイ酸マグネシウム=50/50(固形分ベース)、全固形分濃度を5質量%としたこと以外は、実施例4と同様にして、複合粒子Q(アトマイザー回転数15000rpm)を得た。複合粒子Qの諸物性を表1に示す。
ステンレスジョッキに純水100gを導入し、3-1モーターで攪拌しながらケイ酸カルシウム(トクヤマ(株)製、商品名:フローライト R、体積平均粒子径25~30μm)を薬さじにて少量ずつ添加しながら攪拌した。10.7g添加したところで攪拌不能になった。
ステンレスジョッキの中に純水を導入し3-1モーターで攪拌しながら、実施例1で得られたWetケークを加え混合し、次にSiO2(商品名:アエロジル200、日本アエロジル(株)製)、体積平均粒子径0.016μm)を薬さじにて少量ずつ添加しながら攪拌し混合した。質量比は、セルロース/軽質無水ケイ酸=29.3/70.7(固形分ベース)であり、全固形分濃度は8.5質量%であった(pHは10.2)。のり状となり噴霧乾燥できなかった。
ステンレスジョッキの中に純水を導入し、3-1モーターで攪拌しながら、実施例1で得られたWetケークを加え混合し、次にメタケイ酸アルミン酸マグネシウム(商品名:ノイシリン、富士化学工業(株)製)を混合した。質量比は、セルロース/メタケイ酸アルミン酸マグネシウム=31.0/69.0(固形分ベース)であり、全固形分濃度は11.7質量%であった(pHは10.2)。クリーム上となり噴霧乾燥できなかった。
ケイ酸カルシウム(トクヤマ(株)製、商品名:フローライト R、体積平均粒子径25μm)単体の物性を表2に示す。
質量比を、でんぷん/セルロース/ケイ酸カルシウム=2.5/72.5/25(固形分ベース)、全固形分濃度を11.7質量%としたこと以外は、実施例4と同様にして、複合粒子Rを得た。複合粒子Rの諸物性を表2に示す。
市販溶解パルプ(針葉樹パルプ、セルロース一次粒子の平均幅は約39μm、平均厚みは約8μm)を細断したものを2kgと、0.4%の塩酸水溶液30Lを低速型攪拌機(池袋琺瑯工業(株)製、商品名、30LGL反応器)に入れ攪拌しながら、116℃、1時間加水分解し、酸不溶解性残渣を得た(セルロース分散粒子の体積平均粒子径は51μmであり、L/Dは3.4であった)。得られた酸不溶解性残渣及び水不溶解性無機化合物として二酸化ケイ素(トクヤマ製、商品名、ファインシール、体積平均粒子径5μm)を、量比30/70(固形分ベース)で、90Lポリバケツに導入し、全固形分濃度が20重量%になるように純水を加え3-1モーターで攪拌しながら、アンモニア水で中和(中和後のpHは7.5~8.0であった)し、これを噴霧乾燥(分散液供給速度6kg/hr、入口温度180~220℃、出口温度50~70℃、アトマイザー回転数30000rpm)して、複合粒子S(特許文献3の実施例2に相当)を得た。複合粒子Sの諸物性を表2に示す。
市販のパルプ(針葉樹パルプ、セルロース一次粒子の平均幅は約39μm、平均厚みは約8μm)を細断したものを2kgと、0.2%の塩酸水溶液30Lを低速型攪拌機(池袋琺瑯工業(株)製、商品名、30LGL反応器)に入れ攪拌しながら、116℃、1時間加水分解し、酸不溶解性残渣を得た(セルロース分散粒子の体積平均粒子径は72μmであり、L/Dは4.0であった)及びタルク(和光純薬製、体積平均粒子径が5μmになるよう調製)を、量比98/2(固形分ベース)で、90Lポリバケツに導入し、全固形分濃度が10重量%になるように純水を加え3-1モーターで攪拌しながら、アンモニア水で中和(中和後のpHは7.5~8.0であった)し、これを比較例3と同様に噴霧乾燥して、複合粒子T(特許文献3の実施例6に相当)を得た。複合粒子Tの諸物性を表2に示す。
結晶セルロースとして、セオラスPH-101(旭化成ケミカルズ製)を用い、質量比を、セルロース/ケイ酸カルシウム=28.6/71.4としたものを、ポリ袋中で3分間十分に混合して、セルロース/ケイ酸カルシウムの混合物U(特許文献4でケイ酸配合量が最大のもの)を得た。混合物Uの諸物性を表2に示す。
結晶セルロースとして、セオラスPH-101(旭化成ケミカルズ製)を用い、質量比を、セルロース/ケイ酸カルシウム=71.4/28.6としたものを、ポリ袋中で3分間十分に混合して、セルロース/ケイ酸カルシウムの混合物V(特許文献4でケイ酸配合量が最小のもの)を得た。混合物Vの諸物性を表2に示す。
日本電子(株)製「JSM-5510LV型」の電子顕微鏡を用いて、複合粒子B,D,G,I,K,Mの様子をSEMで観測した。
実施例2の複合粒子B(図1参照)、実施例4の複合粒子D(図2参照)、実施例7の複合粒子G(図3参照)、実施例9の複合粒子I(図4参照)は、比較的表面に凹凸がなく、球に近い形状をしていることがわかる。また、セルロースのWETケーク(図5参照)と参考例2のケイ酸カルシウム(図6参照)が複合化して、空隙を有していることがわかる。この空隙があることにより、液保持率が高く、硬度が高い成型体することができる。
イブプロフェンはスティッキングしやすい薬物の代表例である。これを用い、スティッキング防止効果について比較した。評価に用いるイブプロフェン配合の造粒顆粒は、下記の方法で作成した。
造粒顆粒88質量%、クロスカルメロースナトリウム(ニチリン化学(株)製、「キッコレート」ND-2HS)2質量%、実施例3の複合粒子C10質量%をポリエチレンバッグ中で3分間混合した。次に、この混合粉体の総重量に対して0.5質量%のステアリン酸マグネシウム(太平化学産業(株)製)を加えて30秒間さらにゆっくりと混合した。該混合粉体をロータリー打錠機((株)菊水製作所製、CLEANPRESS CORRECT 12HUK)で直径0.8cm、12Rの杵を用いてターンテーブル回転数54rpm、打錠圧5~15kN、オープンフィードの条件で打錠し、重量180mgの錠剤を作製した。その錠剤物性を表3に示す。
実施例18の複合粒子Cを、実施例8の複合粒子Hとする以外は実施例18と同様に操作した。錠剤物性を表3に示す。
実施例18の複合粒子Cを、軽質無水ケイ酸(日本アエロジル(株)製、アエロジル200)とすること以外は実施例18と同様に操作した。錠剤物性を表3に示す。
実施例18の複合粒子Cを、比較例3の複合粒子Sとすること以外は実施例18と同様に操作した。錠剤物性を表3に示す。
実施例18の複合粒子Cを、比較例4の複合粒子Tとすること以外は実施例18と同様に操作した。錠剤物性を表3に示す。
実施例18の複合粒子Cを、比較例5の混合物Uとすること以外は実施例18と同様に操作した。錠剤物性を表3に示す。
液体の活性成分である理研酢酸トコフェロール(理研ビタミン)360gと、ツイーン80(和光純薬)と、純水1000gを計量し、TKホモミクサー(プライミクスMARK2 2.5型)にて10000rpmで15分攪拌混合し、乳化液を作製した。
実施例3の複合粒子C360gをバーチカルグラニュレーター((株)パウレック社製、FM-VG-10P)に投入し、ブレード200rpm、チョッパー2100rpmの条件で混合しながら、上記で作成した乳化液360gを30秒で投入後、6分間造粒し排出した。次にオーブン(タバイ社製、エスペックオーブンPV-211)で乾燥した後、目開き710μmの篩(イイダ製作所製、試験用ふるい)を通過した乾燥品を試験サンプルとした(以降、VE顆粒と記す)。VE顆粒の安息角は35°で良好であった。
複合粒子Cを、ケイ酸カルシウム(トクヤマ(株)製、商品名:フローライトGrade(R)、体積平均粒子径(凝集状態で測定)25~30μm)とする以外は、実施例20と同様に操作した。その錠剤物性を表4に示す。VE顆粒の安息角は41°であり、複合粒子Cを用いた場合より、流動性が劣った。
複合粒子Cを、複合粒子Sとする以外は、実施例20と同様に操作した。その錠剤物性を表4に示す。
Claims (13)
- セルロースと無機化合物を含有し、見掛け比容積が7~13cm3/gであることを特徴とする複合粒子。
- セルロースの平均幅が2~30μm、平均厚みが0.5~5μmである請求項1に記載の複合粒子。
- セルロース10~60質量部、無機化合物40~90質量部を含有する請求項1又は2に記載の複合粒子。
- 無機化合物が、含水二酸化ケイ素、軽質無水ケイ酸、合成ケイ酸アルミニウム、水酸化アルミナマグネシウム、メタケイ酸アルミン酸マグネシウム、ケイ酸アルミン酸マグネシウム、ケイ酸カルシウム、含水無水晶形酸化ケイ素、ケイ酸マグネシウム、及び含水ケイ酸マグネシウムからなる群から選ばれる少なくとも1種である請求項1~3のいずれか一項に記載の複合粒子。
- 無機化合物がケイ酸カルシウムである請求項1~4のいずれか一項に記載の複合粒子。
- 細孔径が0.003~1μmであり、細孔容積が1.9~3.9cm3/gである請求項1~5のいずれか一項に記載の複合粒子。
- 酢酸トコフェロール保持率が500~1000%である請求項1~6のいずれか一項に記載の複合粒子。
- 重量平均粒径が30~250μmである請求項1~7のいずれか一項に記載の複合粒子。
- さらにデンプンを含む請求項1~8のいずれか一項に記載の複合粒子。
- 請求項1~9のいずれか1項に記載の複合粒子と、活性成分とを含む成型体。
- 活性成分が医薬用成分又は、健康食品用成分である請求項10に記載の成型体。
- セルロースと無機化合物を含有する複合粒子、及び活性成分を含み、該活性成分が、25℃における粘度が3~10000mPa・sの液体であり、該活性成分を1成型体500mg当り105~250mg含む成型体。
- 液体成分が酢酸トコフェロールである請求項12に記載の成型体。
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| JP2012522585A JP5759457B2 (ja) | 2010-06-29 | 2011-06-23 | セルロースと無機化合物を含む複合粒子 |
| CN201180032222.6A CN102958980B (zh) | 2010-06-29 | 2011-06-23 | 含有纤维素和无机化合物的复合粒子 |
| US13/807,373 US8951636B2 (en) | 2010-06-29 | 2011-06-23 | Composite particles which contain both cellulose and inorganic compound |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013216887A (ja) * | 2012-04-03 | 2013-10-24 | Corn Products Development Inc | 微粒子化澱粉及びその製造方法 |
| WO2013180248A1 (ja) * | 2012-05-31 | 2013-12-05 | 旭化成ケミカルズ株式会社 | セルロース粉末 |
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| JP2013216887A (ja) * | 2012-04-03 | 2013-10-24 | Corn Products Development Inc | 微粒子化澱粉及びその製造方法 |
| JP2017165972A (ja) * | 2012-05-31 | 2017-09-21 | 旭化成株式会社 | セルロース粉末 |
| US11390690B2 (en) | 2012-05-31 | 2022-07-19 | Asahi Kasei Chemicals Corporation | Cellulose powder |
| WO2013180246A1 (ja) * | 2012-05-31 | 2013-12-05 | 旭化成ケミカルズ株式会社 | セルロース粉末 |
| JP2019049012A (ja) * | 2012-05-31 | 2019-03-28 | 旭化成株式会社 | セルロース粉末 |
| JPWO2013180246A1 (ja) * | 2012-05-31 | 2016-01-21 | 旭化成ケミカルズ株式会社 | セルロース粉末 |
| JPWO2013180249A1 (ja) * | 2012-05-31 | 2016-01-21 | 旭化成ケミカルズ株式会社 | セルロース粉末 |
| JPWO2013180248A1 (ja) * | 2012-05-31 | 2016-01-21 | 旭化成ケミカルズ株式会社 | セルロース粉末 |
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| US10662258B2 (en) | 2012-05-31 | 2020-05-26 | Asahi Kasei Chemicals Corporation | Cellulose powder |
| US9592199B2 (en) | 2012-05-31 | 2017-03-14 | Asahi Kasei Chemicals Corporation | Cellulose powder |
| JP2018028101A (ja) * | 2012-05-31 | 2018-02-22 | 旭化成株式会社 | セルロース粉末 |
| WO2013180249A1 (ja) * | 2012-05-31 | 2013-12-05 | 旭化成ケミカルズ株式会社 | セルロース粉末 |
| JP2019059949A (ja) * | 2012-05-31 | 2019-04-18 | 旭化成株式会社 | セルロース粉末 |
| US9928821B2 (en) | 2013-04-09 | 2018-03-27 | Upm-Kymmene Corporation | Composite having acoustic properties, manufacturing the composite, a component comprising a composite, manufacturing the component and uses thereof |
| CN104138887A (zh) * | 2014-07-24 | 2014-11-12 | 北方民族大学 | 一种固化污酸渣中铬的方法 |
| JP2016102179A (ja) * | 2014-11-28 | 2016-06-02 | 旭化成株式会社 | 粒状成形体 |
| JP2016222606A (ja) * | 2015-05-30 | 2016-12-28 | 富田製薬株式会社 | 油状物質含有粉末組成物 |
| WO2016194805A1 (ja) * | 2015-05-30 | 2016-12-08 | 富田製薬株式会社 | 油状物質含有粉末組成物 |
| WO2017094569A1 (ja) * | 2015-11-30 | 2017-06-08 | 旭化成株式会社 | セルロース、無機化合物及びヒドロキシプロピルセルロースを含む複合粒子 |
| US10426838B2 (en) | 2015-11-30 | 2019-10-01 | Asahi Kasei Kabushiki Kaisha | Composite particles including cellulose, inorganic compound, and hydroxypropyl cellulose |
| JP2017156226A (ja) * | 2016-03-02 | 2017-09-07 | 住友金属鉱山株式会社 | 粉末試料の観察方法およびその作製方法 |
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| CN110121522A (zh) * | 2017-01-13 | 2019-08-13 | 日本制纸株式会社 | 微小球形粒子 |
| JPWO2018131629A1 (ja) * | 2017-01-13 | 2019-11-14 | 日本製紙株式会社 | 微小球形粒 |
| CN113499321A (zh) * | 2021-06-10 | 2021-10-15 | 南方医科大学 | 一种微马达载体及其制备方法与应用 |
| CN113499321B (zh) * | 2021-06-10 | 2022-06-10 | 南方医科大学 | 一种微马达载体及其制备方法与应用 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102958980B (zh) | 2015-05-27 |
| JPWO2012002253A1 (ja) | 2013-08-22 |
| EP2589618B1 (en) | 2015-12-30 |
| JP5759457B2 (ja) | 2015-08-05 |
| CN102958980A (zh) | 2013-03-06 |
| US20130108872A1 (en) | 2013-05-02 |
| EP2589618A4 (en) | 2014-05-21 |
| US9446137B2 (en) | 2016-09-20 |
| EP2589618A1 (en) | 2013-05-08 |
| US20150174255A1 (en) | 2015-06-25 |
| US8951636B2 (en) | 2015-02-10 |
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