WO2016104644A1 - 含水ゲル組成物 - Google Patents
含水ゲル組成物 Download PDFInfo
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- WO2016104644A1 WO2016104644A1 PCT/JP2015/086099 JP2015086099W WO2016104644A1 WO 2016104644 A1 WO2016104644 A1 WO 2016104644A1 JP 2015086099 W JP2015086099 W JP 2015086099W WO 2016104644 A1 WO2016104644 A1 WO 2016104644A1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/02—Cosmetics or similar toiletry preparations characterised by special physical form
- A61K8/04—Dispersions; Emulsions
- A61K8/042—Gels
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F7/00—Heating or cooling appliances for medical or therapeutic treatment of the human body
- A61F7/02—Compresses or poultices for effecting heating or cooling
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/72—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
- A61K8/73—Polysaccharides
- A61K8/731—Cellulose; Quaternized cellulose derivatives
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/72—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
- A61K8/81—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
- A61K8/8129—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal or ketal radical; Compositions of hydrolysed polymers or esters of unsaturated alcohols with saturated carboxylic acids; Compositions of derivatives of such polymers, e.g. polyvinylmethylether
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/72—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
- A61K8/81—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
- A61K8/8141—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
- A61K8/8158—Homopolymers or copolymers of amides or imides, e.g. (meth) acrylamide; Compositions of derivatives of such polymers
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/72—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
- A61K8/81—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
- A61K8/817—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a single or double bond to nitrogen or by a heterocyclic ring containing nitrogen; Compositions or derivatives of such polymers, e.g. vinylimidazol, vinylcaprolactame, allylamines (Polyquaternium 6)
- A61K8/8176—Homopolymers of N-vinyl-pyrrolidones. Compositions of derivatives of such polymers
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
- A61Q19/00—Preparations for care of the skin
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F7/00—Heating or cooling appliances for medical or therapeutic treatment of the human body
- A61F7/02—Compresses or poultices for effecting heating or cooling
- A61F2007/0203—Cataplasms, poultices or compresses, characterised by their contents; Bags therefor
- A61F2007/0206—Cataplasms, poultices or compresses, characterised by their contents; Bags therefor containing organic solids or fibres
- A61F2007/0209—Synthetics, e.g. plastics
- A61F2007/0214—Polymers, e.g. water absorbing
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F7/00—Heating or cooling appliances for medical or therapeutic treatment of the human body
- A61F7/02—Compresses or poultices for effecting heating or cooling
- A61F2007/0203—Cataplasms, poultices or compresses, characterised by their contents; Bags therefor
- A61F2007/0215—Cataplasms, poultices or compresses, characterised by their contents; Bags therefor containing liquids other than water
- A61F2007/0219—Gels
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F7/00—Heating or cooling appliances for medical or therapeutic treatment of the human body
- A61F7/02—Compresses or poultices for effecting heating or cooling
- A61F2007/0225—Compresses or poultices for effecting heating or cooling connected to the body or a part thereof
- A61F2007/0226—Compresses or poultices for effecting heating or cooling connected to the body or a part thereof adhesive, self-sticking
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K2800/00—Properties of cosmetic compositions or active ingredients thereof or formulation aids used therein and process related aspects
- A61K2800/40—Chemical, physico-chemical or functional or structural properties of particular ingredients
- A61K2800/54—Polymers characterized by specific structures/properties
- A61K2800/542—Polymers characterized by specific structures/properties characterized by the charge
- A61K2800/5422—Polymers characterized by specific structures/properties characterized by the charge nonionic
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K2800/00—Properties of cosmetic compositions or active ingredients thereof or formulation aids used therein and process related aspects
- A61K2800/40—Chemical, physico-chemical or functional or structural properties of particular ingredients
- A61K2800/54—Polymers characterized by specific structures/properties
- A61K2800/542—Polymers characterized by specific structures/properties characterized by the charge
- A61K2800/5424—Polymers characterized by specific structures/properties characterized by the charge anionic
Definitions
- the present invention relates to a hydrogel composition.
- Patent Document 1 discloses an external patch comprising an adhesive base layer containing polyvinyl alcohol and a polyoxyethylene derivative, a stretchable support, and a release liner. The peelability from the base layer is enhanced.
- Patent Document 2 discloses a pressure-sensitive adhesive composition having a specific gel strength and elasticity, containing a compound of a metal crosslinking agent and an amino acid in an aqueous pressure-sensitive adhesive base containing a water-soluble polymer substance. A poultice that is spread on top is disclosed, and appropriate adhesiveness to the skin is expressed.
- Patent Document 3 discloses a water-containing cataplasm composition containing a specific mineral, polyacrylic acid and / or a salt thereof, and having a water content of 60% by weight or more, thereby reducing backside spots. Attempting to impart adhesiveness to the skin.
- Patent Document 1 Japanese Patent Application Laid-Open No. 2003-93434
- Patent Document 2 Japanese Patent Application Laid-Open No. 10-265373
- Patent Document 3 Japanese Patent Application Laid-Open No. 11-139964
- the present invention includes the following components (A) to (D): (A) Water 50% by mass or more and 95% by mass or less (B) An anionic water-soluble polymer compound containing carboxymethyl cellulose or a salt thereof at 80% by mass or more (C) A crosslinking agent that forms an ionic crosslink with an anionic functional group (D ) It relates to a water-containing gel composition containing 2.5% by mass or more and 8% by mass or less of a nonionic water-soluble polymer compound represented by the following general formula (1).
- R represents —OH, —NX 2 (where X represents —CH 3 or a hydrogen atom), —OCH 3 , —NHCOCH 3 , or —NCH 3 COCH 3 , and n represents 200 Indicates a number of up to 500,000.
- the present invention also includes the following components (A) to (D): (A) Water 50% by mass or more and 95% by mass or less (B) An anionic water-soluble polymer compound containing carboxymethyl cellulose or a salt thereof at 80% by mass or more (C) A crosslinking agent that forms an ionic crosslink with an anionic functional group (D )
- R represents —OH, —NX 2 (where X represents —CH 3 or a hydrogen atom), —OCH 3 , —NHCOCH 3 , or —NCH 3 COCH 3 , and n represents 200 Indicates a number of up to 500,000.)
- the present invention relates to a water-containing gel composition that exhibits excellent usability and is excellent in gel stability.
- the present inventor has made various studies and uses a specific anionic water-soluble compound and a cross-linking agent in combination with a specific nonionic water-soluble polymer compound in a specific amount while increasing the water content.
- the present inventors have found a water-containing gel composition capable of effectively enhancing the feeling of use and improving the stability of the formed gel.
- the water-containing gel composition of the present invention when applied to the skin in a use situation, it provides a fresh feel, excellent followability to the skin, no discomfort that sticks to the skin, and a comfortable use feeling. Can be expressed. Moreover, since it is excellent also in the stability of the formed gel, it can be used suitably as a patch imposed on long-time use.
- the hydrogel composition of the present invention contains 50% by mass or more and 95% by mass or less of water as the component (A).
- the content of the component (A) is 50% by mass or more, preferably 60% by mass or more, and more preferably 65% by mass in the hydrogel composition of the present invention from the viewpoint of imparting an excellent usability. It is at least 70% by mass, more preferably at least 70% by mass, even more preferably at least 75% by mass.
- the content of the component (A) is 95% by mass or less, preferably 92% by mass or less, more preferably, in the hydrogel composition of the present invention, from the viewpoint of ensuring the stability of the gel. Is 90% by mass or less, more preferably 85% by mass or less.
- the content of the component (A) in the hydrogel composition of the present invention is 50% by mass or more and 95% by mass or less, preferably 60 to 92% by mass, more preferably 65 to 92% by mass. %, More preferably 70 to 90% by mass, and still more preferably 75 to 85% by mass.
- the water-containing gel composition of the present invention contains an anionic water-soluble polymer compound containing 80% by mass or more of carboxymethyl cellulose or a salt thereof as the component (B).
- an anionic water-soluble polymer compound containing 80% by mass or more of carboxymethyl cellulose or a salt thereof as the component (B).
- the carboxyl group of carboxymethylcellulose or a salt thereof and the crosslinking agent of the component (C) described later form ionic crosslinking, thereby providing high water retention and good gel strength.
- a gel can be constructed.
- the “water-soluble polymer compound” means a compound that uniformly dissolves and imparts viscosity when dispersed in water.
- Examples of the salt of carboxymethyl cellulose include one or more selected from alkali metal salts such as sodium salt and potassium salt, and ammonium salt. From the viewpoint of favorably forming ionic crosslinking, cost, availability, and the like. In view of the above, sodium carboxymethylcellulose is preferred.
- the degree of etherification of carboxymethylcellulose or a salt thereof is preferably 0.6 to 1.1 from the viewpoint of maintaining appropriate gel strength and improving followability to the skin, and ensuring the stability of the gel. More preferably, it is 0.65 to 0.9.
- the degree of etherification refers to the degree of substitution of carboxymethyl groups per glucose unit.
- Carboxymethylcellulose or a salt thereof has a viscosity at 25 ° C. of 1% by weight aqueous solution from the viewpoint of maintaining an appropriate gel strength and improving the followability to the skin, and ensuring the stability of the gel.
- the viscosity is preferably 1,500 to 10,000 mPa ⁇ s, more preferably 2,500 to 7,000 mPa ⁇ s.
- the content of carboxymethyl cellulose or a salt thereof is preferably 80% by mass or more in the anionic water-soluble polymer compound of component (B) from the viewpoint of combining a good feeling of use and high stability of the gel. Is 90% by mass or more, more preferably 95% by mass or more, and preferably 100% by mass or less.
- Examples of the method for analyzing the content of carboxymethyl cellulose or a salt thereof include nuclear magnetic resonance (NMR) method, liquid chromatograph mass spectrometry (LC / MS), gas chromatograph mass spectrometry (GC / MS) and the like. .
- the anionic water-soluble polymer compound other than the carboxymethyl cellulose or a salt thereof which can be contained in the anionic water-soluble polymer compound of the component (B), has a polar group existing in the molecule only in an anionic functional group.
- the compound include poly (meth) acrylic acid or a salt thereof, polystyrene sulfonic acid or a salt thereof, polyisoprene sulfonic acid or a salt thereof, polyvinyl naphthalene sulfonic acid or a salt thereof, polyvinyl Examples include sulfonic acid or a salt thereof, poly (meth) acrylamide dimethylpropane sulfonic acid or a salt thereof, poly (meth) acryloyloxyethyl sulfonic acid or a salt thereof, an anionic starch derivative, and the like.
- the content of the component (B) is such that the carboxyl group of carboxymethylcellulose or a salt thereof and the crosslinking agent of the component (C) described later form an ionic crosslink well in the hydrogel composition of the present invention.
- it is 2.2 mass% or more, More preferably, it is 2.7 mass% or more, More preferably, it is 3 mass% or more.
- the content of the component (B) is preferably 6% by mass or less, more preferably, in the hydrous gel composition of the present invention, from the viewpoint of imparting appropriate flexibility and followability to the skin to the gel. Is 5% by mass or less, more preferably 4% by mass or less.
- the content of the component (B) is preferably 2.2 to 6% by mass, more preferably 2.7 to 5% by mass, and further preferably 3% in the hydrogel composition of the present invention. Is 4% by mass.
- the water-containing gel composition of the present invention contains, as component (C), a crosslinking agent that forms an ionic crosslink with an anionic functional group.
- a cross-linking agent can form an ion cross-link with the carboxyl group of the carboxymethyl cellulose or salt thereof contained in the component (B) to construct a gel having high water retention and good gel strength.
- the crosslinking agent for component (C) may be any cationic compound that can form an ionic bridge with an anionic functional group.
- a polyvalent metal compound is preferable from the viewpoint of gel strength and gel stability.
- the upper limit of the number of monovalent cationic elements and / or amino groups in one molecule is preferably 8 or less because the cross-linking agent is preferably a low-molecular one.
- polyvalent metal compound examples include compounds containing a polyvalent metal such as aluminum, magnesium, titanium, chromium, manganese, iron, cobalt, nickel, zinc, cadmium, lead, calcium, or salts thereof.
- polyhydric metal hydroxides such as aluminum hydroxide, calcium hydroxide, magnesium hydroxide, zinc hydroxide, aluminum magnesium hydroxide; aluminum oxide, calcium oxide, magnesium oxide, zinc oxide, aluminate
- Polyvalent metal oxides such as sodium; aluminum sulfate, potassium aluminum sulfate, aluminum ammonium sulfate, aluminum carbonate, aluminum nitrate, aluminum chloride, calcium sulfate, calcium carbonate, calcium chloride, magnesium sulfate, magnesium carbonate, magnesium chloride, zinc sulfate,
- Polyvalent metal inorganic salts such as zinc carbonate, zinc chloride, magnesium aluminate (meth) silicate, synthetic hydrotalcite; aluminum acetate, calcium acetate, magnesium acetate, zinc acetate
- one or two or more selected from polyvalent metal hydroxides and polyvalent metal inorganic salts are preferable.
- Aluminum hydroxide or (meth) silicate aluminum Magnesium acid is more preferable.
- Examples of the compound having a plurality of monovalent cationic elements or amino groups in one molecule include those having a relatively low molecular weight such as ethylene hexamethyldiamine dichloride and ethylenediamine, and cationic polymer compounds.
- Examples of the cationic polymer compound include polyvinyl pyridine, cationized hydroxyethyl cellulose, poly (meth) acryloyloxyethyl tri (di, mono) alkylammonium chloride, poly (meth) acrylamidoethyltri (di, mono) alkylammonium chloride, And cationic amino acid polymers such as polyethyleneimine polyamine and polylysine.
- the content of the component (C) is preferably 0.01% by mass or more in the water-containing gel composition of the present invention, and more preferably from the viewpoint of forming ionic crosslinks well with the component (B). It is 05 mass% or more, More preferably, it is 0.1 mass% or more.
- the content of the component (C) is preferably 2% by mass or less, more preferably, in the hydrogel composition of the present invention, from the viewpoint of imparting appropriate flexibility and followability to the skin to the gel. Is 1% by mass or less, more preferably 0.4% by mass or less.
- the content of the component (C) is preferably 0.01 to 2% by mass, more preferably 0.05 to 1% by mass, and still more preferably 0% in the hydrogel composition of the present invention. .1 to 0.4 mass%.
- the mass ratio ((B) / (C)) of the component (B) and the component (C) is preferably 3 or more from the viewpoint of efficiently forming an ionic bridge and maintaining an appropriate gel strength. Preferably it is 15 or more, More preferably, it is 20 or more.
- the mass ratio of component (B) to component (C) ((B) / (C)) is preferably 60 or less from the viewpoint of maintaining the flexibility of the gel and ensuring good followability to the skin. More preferably, it is 40 or less, More preferably, it is 30 or less.
- the mass ratio of component (B) to component (C) ((B) / (C)) is preferably 3 to 60, more preferably 15 to 40, and even more preferably 20 to 30. .
- the hydrogel composition of the present invention contains 2.5% by mass or more and 8% by mass or less of a nonionic water-soluble polymer compound represented by the following general formula (1) as the component (D).
- R represents —OH, —NX 2 (where X represents —CH 3 or a hydrogen atom), —OCH 3 , —NHCOCH 3 , or —NCH 3 COCH 3 , and n represents 200 Shows a number of ⁇ 500,000.
- the nonionic water-soluble polymer compound of component (D) is selected from polyvinyl alcohol (PVA), polyvinyl methyl ether (PVME), polyvinyl pyrrolidone (PVP), polyacrylamide, and polyvinyl pyrrolidone / vinyl acetate copolymer. 1 type, or 2 or more types. Especially, from a viewpoint of ensuring the stability of a gel effectively, 1 type, or 2 or more types chosen from polyvinyl alcohol, polyvinylpyrrolidone, and polyacrylamide are preferable, and polyvinyl alcohol is more preferable.
- the content of the component (D) is 2.5% by mass or more, preferably 3% by mass or more, in the hydrogel composition of the present invention, from the viewpoint of ensuring good gel stability. More preferably, it is 4 mass% or more. In addition, the content of the component (D) is 8% by mass or less in the hydrogel composition of the present invention from the viewpoint of maintaining the flexibility of the gel and ensuring good followability to the skin, Preferably it is 7 mass% or less, More preferably, it is 6 mass% or less.
- the content of component (D) in the hydrogel composition of the present invention is 2.5% by mass or more and 8% by mass or less, preferably 3 to 7% by mass, more preferably 4 to 4% by mass. 6% by mass.
- the mass ratio of component (B) to component (D) ((B) / (D)) is determined on the skin when the patch prepared using the hydrogel composition of the present invention is applied to the skin and then peeled off. From the viewpoint of improving the residual feeling in the case, it is preferably 0.4 or more, more preferably 0.5 or more, and further preferably 0.6 or more.
- the mass ratio ((B) / (D)) of the component (B) to the component (D) is preferably 1.7 or less, more preferably 1 from the viewpoint of difficulty in shifting when applied to the skin. .2 or less, more preferably 0.9 or less.
- the mass ratio of the component (B) to the component (D) ((B) / (D)) is preferably 0.4 to 1.7, more preferably 0.5 to 1.2. More preferably, it is 0.6 to 0.9.
- the mass ratio ((A) / ((B) + (D))) of the component (A) and the components (B) and (D) is preferably 15 or less from the viewpoint of high gel stability. , 12 or less, more preferably 6 or more, and more preferably 7 or more from the viewpoint of good usability.
- the hydrogel composition of the present invention can contain an organic acid from the viewpoint of further improving the stability of the gel.
- the organic acid include one or more selected from succinic acid, fumaric acid, malic acid, adipic acid, tartaric acid, benzoic acid, citric acid, pyrrolidone carboxylic acid, and salicylic acid. It is done.
- succinic acid is more preferable.
- the content of the organic acid is preferably 0.1 to 0.7% by mass, more preferably 0, in the hydrogel composition of the present invention from the viewpoint of effectively contributing to improvement of the gel stability. .3 to 0.5% by mass.
- the water-containing gel composition of the present invention is a water-soluble polymer compound other than the component (B) and the component (D) from the viewpoint of ensuring excellent usability and high gel stability while having a high water content. It is preferable to limit the content of.
- Specific examples of water-soluble polymer compounds other than component (B) and component (D) include gelatin, starch (excluding anionic starch derivatives), methylcellulose, hydroxyethylcellulose, hydroxypropylcellulose, hydroxypropylmethylcellulose, Examples include guar gum and xanthan gum.
- the content of the water-soluble polymer compound other than the component (B) and the component (D) is preferably 1% by mass or less, more preferably 0.5% by mass or less, and further preferably 0.2% by mass. % Or less. Especially, it is preferable not to contain starch, guar gum, and xanthan gum unless they are inevitably mixed.
- the hydrogel composition of the present invention is usually used in other cosmetics and pharmaceuticals, for example, moisturizers, oils, surfactants, medicinal ingredients, preservatives, antioxidants, ultraviolet absorption
- an agent, a solubilizer, a coloring agent, a cooling sensation agent, a warming sensation agent, a fragrance and the like may be appropriately contained.
- the hydrogel composition of the present invention has a viewpoint of imparting an excellent feeling of use such as a good touch, and a viewpoint of ensuring shape retention while providing an excellent followability to the skin by exhibiting an appropriate flexibility. Therefore, the thickness is preferably 0.1 mm or more, more preferably 0.3 mm or more, further preferably 0.5 mm or more, and preferably 4 mm or less, and 3 mm or less. More preferably, it is more preferably 2 mm or less.
- the hydrogel composition of the present invention can be produced according to the following method.
- the above components (A), (B), (C), and (D) are mixed to prepare an uncrosslinked gel stock solution, and then a film that can be peeled on one side and a film or substrate that can be peeled on the other side
- an uncrosslinked gel stock solution is formed into a sheet as a layer.
- the above components (A), (B), (C) and (D) and other components as necessary are mixed to prepare an uncrosslinked gel stock solution.
- a non-crosslinked gel stock solution is applied to a peelable film to a thickness of 0.1 to 5 mm, and a peelable film or a base layer is laminated to form a sheet.
- the obtained sheet is aged for 1 to 8 days under a temperature of 30 to 60 ° C. to advance the crosslinking, thereby obtaining the hydrogel composition of the present invention.
- a hydrogel composition that has not undergone the step of proceeding with crosslinking is referred to as “uncrosslinked gel stock solution”.
- the hydrogel composition of the present invention can be formed into a layer and used as a gel layer, and a patch can be prepared by laminating a base layer such as a nonwoven fabric or a release layer such as a film.
- a laminating method one or both surfaces sandwiching the above gel stock solution are used as a base layer or a release layer, or after a gel layer made of a hydrous gel composition is once prepared, The method of pressing and laminating
- the hydrogel composition of the present invention is preferably used by being laminated on a base material layer such as a nonwoven fabric, a woven fabric, a knitted fabric, or paper, and more preferably used by being laminated on a nonwoven fabric. preferable.
- a base material layer such as a nonwoven fabric, a woven fabric, a knitted fabric, or paper
- a hydrophobic material as a material constituting the base material layer from the viewpoint of suppressing the seepage of the gel.
- This hydrous gel composition effectively suppresses gel exudation even when a hydrophilic material is used as the base material layer. Therefore, it is possible to select any material as the base material layer according to the purpose.
- the hydrogel composition of the present invention is used as an adhesive sheet for cooling, it is preferable to use a nonwoven fabric containing hydrophilic fibers as a base material layer to be laminated from the viewpoint of improving the cooling effect.
- hydrophilic fiber materials include rayon, cotton, cupra, hemp, wool, silk, acetate, cellulose, wood pulp, non-wood pulp, and the like; hydroxyl groups, carboxyl groups, sulfonic acid groups, amide groups, amino acid groups, etc.
- Polymers having hydrophilic groups such as fibers made of hydrophilic polymers such as polyvinyl alcohol, polyethylene glycol, cellulose acetate, polyacrylamide, melamine resin, nylon, hydrophilic polyurethane; hydrophilized polyester, etc.
- fibers made of a polymer such as polyethylene glycol, cellulose acetate, polyacrylamide, melamine resin, nylon, hydrophilic polyurethane; hydrophilized polyester, etc.
- examples thereof include fibers made of a polymer; composite fibers having a hydrophobic part made of a hydrophobic polymer such as polyethylene and polypropylene and a hydrophilic part. These may be used alone or in combination of two or more.
- the fiber which has a core sheath structure which consists of a core part and a sheath part is mentioned, for example. Moreover, you may exhibit the porous structure formed by the space
- the mixed fiber sheet is more preferable.
- the fiber which consists of polyolefins, such as polyethylene terephthalate (PET), polyethylene (PE), polypropylene (PP), and hydrophobic polymers, such as a polyurethane, is mentioned.
- polyolefins such as polyethylene terephthalate (PET), polyethylene (PE), polypropylene (PP), and hydrophobic polymers, such as a polyurethane
- the hydrophilic fiber content in the nonwoven fabric used as the base material layer is changed from the hydrogel composition layer to the nonwoven fabric fiber.
- it is preferably more than 20% by mass in the nonwoven fabric, more preferably 30% by mass or more,
- the content is more preferably at least 50% by mass, particularly preferably at least 50% by mass.
- the content of the hydrophilic fiber in the nonwoven fabric used as the base material layer may be 100% by mass in the nonwoven fabric, but from the viewpoint of suppressing the exudation of the hydrogel composition from the base material layer, it is 100% by mass. % Or less, more preferably 95% by mass or less, and still more preferably 90% by mass or less.
- the base material layer to be laminated on the hydrogel composition may be a non-woven fabric having a specific composition or a plurality of non-woven fabrics having different compositions, but it is used as a base material layer.
- the content of hydrophilic fibers in the nonwoven fabric is preferably within the above range as a whole.
- the hydrogel composition of the present invention is preferably used, for example, by forming a gel layer as described above to prepare a patch, and sticking the surface of the gel layer to the skin, and in use, while providing a fresh touch
- it is excellent in followability to the skin, and there is no sense of incongruity that sticks to the skin, and a comfortable feeling of use can be expressed.
- the formed gel is also excellent in stability, it can be used for a long time while maintaining a comfortable feeling of use. Therefore, the hydrogel composition of the present invention can be applied to the skin of a desired site for a variety of uses as cosmetics, pharmaceuticals, quasi-drugs and miscellaneous goods for application to the outer skin (including the scalp). And can be used comfortably.
- the present invention further discloses the following hydrogel composition.
- R represents —OH, —NX 2 (where X represents —CH 3 or a hydrogen atom), —OCH 3 , —NHCOCH 3 , or —NCH 3 COCH 3 , and n represents 200 Indicates a number of up to 500,000.)
- the content of the component (A) is preferably 60% by mass or more, more preferably 65% by mass or more, further preferably 70% by mass or more, and further preferably 75% by mass or more. Yes, preferably 92% by mass or less, more preferably 90% by mass or less, and still more preferably 85% by mass or less, [1].
- the degree of etherification of carboxymethyl cellulose or a salt thereof contained in component (B) is preferably 0.6 to 1.1, more preferably 0.65 to 0.9.
- the hydrogel composition [4] The viscosity at 25 ° C. when the carboxymethyl cellulose or salt thereof contained in the component (B) is 1% by mass aqueous solution is preferably 1,500 to 10,000 mPa ⁇ s, more preferably 2, The water-containing gel composition according to any one of the above [1] to [3], which is 500 to 7,000 mPa ⁇ s.
- the content of carboxymethyl cellulose or a salt thereof is preferably 80% by mass or more, more preferably 90% by mass or more, and still more preferably 95% by mass or more in the component (B).
- the content of component (B) is preferably 2.2% by mass or more, more preferably 2.7% by mass or more, further preferably 3% by mass or more, and preferably 6% by mass.
- Component (C) is preferably one or more selected from a polyvalent metal compound and a compound having two or more monovalent cationic elements and / or amino groups in one molecule, and more Preferably, one or more selected from polyvalent metal hydroxides, polyvalent metal oxides, polyvalent metal inorganic salts, polyvalent metal organic salts, ethylene hexamethyldiamine dichloride, ethylenediamine, and cationic polymer compounds More preferably, the hydrogel composition according to any one of the above [1] to [6], which is one or more selected from polyvalent metal hydroxides and polyvalent metal inorganic salts.
- the content of component (C) is preferably 0.01% by mass or more, more preferably 0.05% by mass or more, still more preferably 0.1% by mass or more, and preferably 2%.
- the mass ratio ((B) / (C)) between the component (B) and the component (C) is preferably 3 or more, more preferably 15 or more, still more preferably 20 or more, preferably Is a hydrogel composition according to any one of the above [1] to [8], which is 60 or less, more preferably 40 or less, and even more preferably 30 or less.
- Component (D) is preferably one or more selected from polyvinyl alcohol, polyvinyl methyl ether, polyvinyl pyrrolidone, polyacrylamide, and polyvinyl pyrrolidone / vinyl acetate copolymer, more preferably polyvinyl alcohol.
- the hydrogel composition according to any one of [1] to [9], wherein the gel composition is one or more selected from polyvinylpyrrolidone and polyacrylamide.
- the content of the component (D) is preferably 3% by mass or more, more preferably 4% by mass or more, 8% by mass or less, and preferably 7% by mass or less.
- the mass ratio ((B) / (D)) between the component (B) and the component (D) is preferably 0.4 or more, more preferably 0.5 or more, and still more preferably 0.8.
- the organic acid is preferably one or two selected from succinic acid, fumaric acid, malic acid, adipic acid, tartaric acid, benzoic acid, citric acid, pyrrolidone carboxylic acid, and salicylic acid
- the hydrogel composition according to [13], wherein the content of the organic acid is preferably 0.1 to 0.7% by mass, more preferably 0.3 to 0.5% by mass.
- the content of the water-soluble polymer compound other than the component (B) and the component (D) is preferably 1% by mass or less, more preferably 0.5% by mass or less, and still more preferably 0.8%.
- the thickness is preferably 0.1 mm or more, more preferably 0.3 mm or more, further preferably 0.5 mm or more, preferably 4 mm or less, more preferably 3 mm or less, More preferably, the water-containing gel composition according to any one of the above [1] to [15], which is 2 or less.
- the base material layer is preferably laminated on a nonwoven fabric, woven fabric, knitted fabric, or paper, and more preferably laminated on a nonwoven fabric, any one of the above [1] to [16] A hydrogel composition.
- the nonwoven fabric preferably contains hydrophilic fibers, more preferably rayon, cotton, cupra, hemp, wool, silk, acetate, cellulose, wood pulp, non-wood pulp fibers; polyvinyl alcohol, polyethylene glycol, cellulose acetate Fibers made of hydrophilic polymers such as polyacrylamide, melamine resin, nylon, and hydrophilic polyurethane; fibers made of hydrophobic polymer that has been hydrophilized; selected from composite fibers that have hydrophobic and hydrophilic parts made of hydrophobic polymer The water-containing gel composition according to the above [17], comprising one or more of the above.
- the content of hydrophilic fibers in the nonwoven fabric is preferably more than 20% by mass, more preferably 30% by mass or more, still more preferably 40% by mass or more, and particularly preferably in the nonwoven fabric.
- the hydrogel composition of [18] above which is 50% by mass or more, preferably 100% by mass or less, more preferably 95% by mass or less, and still more preferably 90% by mass or less.
- a cooling adhesive sheet obtained by laminating the hydrated gel composition according to any one of [1] to [19] above on a base material layer.
- An uncrosslinked gel stock solution is prepared by mixing the components (A), (B), (C), and (D), and then a film or substrate that can be peeled on one side and peeled on the other side.
- the manufacturing method of the hydrous gel composition which makes an uncrosslinked gel stock solution into a sheet as a material layer.
- the above-described sheet forming method is a method in which one side is peelable and the other side is peelable, or a non-crosslinked gel stock solution is sandwiched as a base layer and then spread, or on a peelable film
- patches containing the hydrogel composition were prepared by the following method. Specifically, first, a mixed solution of glycerin, methyl parahydroxybenzoate and propylene glycol, sodium carboxymethylcellulose, and dried aluminum hydroxide gel dissolved in warm was put into a kneader, and then an aqueous succinic acid solution was added. An uncrosslinked gel stock solution was prepared. Subsequently, the obtained uncrosslinked gel stock solution was sandwiched between polyethylene terephthalate (PET) films, and the thickness of the gel stock solution was adjusted to 0.8 mm with a baker type applicator and spread.
- PET polyethylene terephthalate
- the time by this measurement is an index of the degree of sticking of the patch to the skin. However, if the time is too long, the stickiness becomes high, which is not preferable in terms of the touch. Preferably it is less than 200 seconds, More preferably, it is 5 seconds or more and less than 120 seconds, More preferably, it is 10 seconds or more and less than 60 seconds.
- Patch test pieces were prepared by laminating nonwoven fabrics of the following material compositions on the patch test pieces obtained in Example 1 and Comparative Examples 4, 5 and 6, respectively.
- Nonwoven fabric 1 PET: Pulp 80: 20 (mass ratio) airlaid nonwoven fabric (thickness 0.22 mm, basis weight 20 g / m 2 )
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Abstract
Description
さらに、特許文献3には、特定の鉱物と、ポリアクリル酸及び/又はその塩とを含有し、含水率が60重量%以上である含水パップ剤組成物が開示されており、裏ジミを低減しつつ皮膚への粘着性の付与を試みている。
(特許文献2)特開平10-265373号公報
(特許文献3)特開平11-139964号公報
(A)水 50質量%以上95質量%以下
(B)カルボキシメチルセルロース又はその塩を80質量%以上含むアニオン性水溶性高分子化合物
(C)アニオン性官能基とイオン架橋を形成する架橋剤
(D)下記一般式(1)で示されるノニオン性水溶性高分子化合物 2.5質量%以上8質量%以下
を含有する含水ゲル組成物に関する。
また、本発明は、次の成分(A)~(D):
(A)水 50質量%以上95質量%以下
(B)カルボキシメチルセルロース又はその塩を80質量%以上含むアニオン性水溶性高分子化合物
(C)アニオン性官能基とイオン架橋を形成する架橋剤
(D)下記一般式(1)で示されるノニオン性水溶性高分子化合物 2.5質量%以上8質量%以下
を混合して未架橋ゲル原液を作製し、次いで片面を剥離可能なフィルムとし、他面を剥離可能なフィルム又は基材層として未架橋ゲル原液をシート化する、含水ゲル組成物の製造方法に関する。
本発明の含水ゲル組成物は、成分(A)として、水を50質量%以上95質量%以下含有する。このように、高い含有量で水が存在することから、使用場面においてみずみずしい肌触りを良好に発揮することができ、また適度な柔軟性を発揮して皮膚への優れた追随性を付与することもできる。成分(A)の含有量は、優れた使用感を付与する観点から、本発明の含水ゲル組成物中に、50質量%以上であって、好ましくは60質量%以上であり、より好ましくは65質量%以上であり、さらに好ましくは70質量%以上であり、ことさらに好ましくは75質量%以上である。また、成分(A)の含有量は、ゲルの安定性を確保する観点から、本発明の含水ゲル組成物中に、95質量%以下であって、好ましくは92質量%以下であり、より好ましくは90質量%以下であり、さらに好ましくは85質量%以下である。そして、成分(A)の含有量は、本発明の含水ゲル組成物中に、50質量%以上95質量%以下であって、好ましくは60~92質量%であり、より好ましくは65~92質量%であり、さらに好ましくは70~90質量%であり、ことさらに好ましくは75~85質量%である。
エーテル化度=(162×Y)/(10,000-80×Y)
有機酸の含有量は、効果的にゲルの安定性の向上に寄与する観点から、本発明の含水ゲル組成物中に、好ましくは0.1~0.7質量%であり、より好ましくは0.3~0.5質量%である。
なお、疎水性繊維の素材としては、ポリエチレンテレフタレート(PET)、ポリエチレン(PE)、ポリプロピレン(PP)等のポリオレフィン、ポリウレタン等の疎水性ポリマーからなる繊維が挙げられる。
[1]次の成分(A)~(D):
(A)水 50質量%以上95質量%以下
(B)カルボキシメチルセルロース又はその塩を80質量%以上含むアニオン性水溶性高分子化合物
(C)アニオン性官能基とイオン架橋を形成する架橋剤
(D)下記一般式(1)で示されるノニオン性水溶性高分子化合物 2.5質量%以上8質量%以下
を含有する含水ゲル組成物。
[2]成分(A)の含有量は、好ましくは60質量%以上であり、より好ましくは65質量%以上であり、さらに好ましくは70質量%以上であり、ことさらに好ましくは75質量%以上であり、好ましくは92質量%以下であり、より好ましくは90質量%以下であり、さらに好ましくは85質量%以下である上記[1]の含水ゲル組成物。
[4]成分(B)に含まれるカルボキシメチルセルロース又はその塩の、1質量%水溶液としたときの25℃における粘度は、好ましくは1,500~10,000mPa・sであり、より好ましくは2,500~7,000mPa・sである上記[1]~[3]いずれか1の含水ゲル組成物。
[5]カルボキシメチルセルロース又はその塩の含有量は、成分(B)中に、好ましくは80質量%以上であり、より好ましくは90質量%以上であり、さらに好ましくは95質量%以上であり、好ましくは100質量%以下である上記[1]~[4]いずれか1の含水ゲル組成物。
[6]成分(B)の含有量は、好ましくは2.2質量%以上であり、より好ましくは2.7質量%以上であり、さらに好ましくは3質量%以上であり、好ましくは6質量%以下であり、より好ましくは5質量%以下であり、さらに好ましくは4質量%以下である上記[1]~[5]いずれか1の含水ゲル組成物。
[8]成分(C)の含有量は、好ましくは0.01質量%以上であり、より好ましくは0.05質量%以上であり、さらに好ましくは0.1質量%以上であり、好ましくは2質量%以下であり、より好ましくは1質量%以下であり、さらに好ましくは0.4質量%以下である上記[1]~[7]いずれか1の含水ゲル組成物。
[9]成分(B)と成分(C)の質量比((B)/(C))は、好ましくは3以上であり、より好ましくは15以上であり、さらに好ましくは20以上であり、好ましくは60以下であり、より好ましくは40以下であり、さらに好ましくは30以下である上記[1]~[8]いずれか1の含水ゲル組成物。
[11]成分(D)の含有量は、好ましくは3質量%以上であり、より好ましくは4質量%以上であり、8質量%以下であって、好ましくは7質量%以下であり、より好ましくは6質量%以下である上記[1]~[10]いずれか1の含水ゲル組成物。
[12]成分(B)と成分(D)の質量比((B)/(D))は、好ましくは0.4以上であり、より好ましくは0.5以上であり、さらに好ましくは0.6以上であり、好ましくは1.7以下であり、より好ましくは1.2以下であり、さらに好ましくは0.9以下である上記[1]~[11]いずれか1の含水ゲル組成物。
[14]有機酸の含有量は、好ましくは0.1~0.7質量%であり、より好ましくは0.3~0.5質量%である上記[13]の含水ゲル組成物。
[15]成分(B)及び成分(D)以外の水溶性高分子化合物の含有量は、好ましくは1質量%以下であり、より好ましくは0.5質量%以下であり、さらに好ましくは0.2質量%以下であり、或いは好ましくはデンプン、グアーガム、及びキサンタンガムを含有しない上記[1]~[14]いずれか1の含水ゲル組成物。
[16]厚みが、好ましくは0.1mm以上、より好ましくは0.3mm以上であり、さらに好ましくは0.5mm以上であり、また、好ましくは4mm以下であり、より好ましくは3mm以下であり、さらに好ましくは2以下である上記[1]~[15]のいずれか1の含水ゲル組成物。
[17]さらに、基材層として好ましくは不織布、織布、編布、又は紙に積層したものであり、より好ましくは不織布に積層したものである上記[1]~[16]いずれか1の含水ゲル組成物。
[18]不織布が、好ましくは親水性繊維を含み、より好ましくはレーヨン、コットン、キュプラ、麻、ウール、シルク、アセテート、セルロース、木材パルプ、非木材パルプの繊維;ポリビニルアルコール、ポリエチレングリコール、酢酸セルロース、ポリアクリルアミド、メラミン樹脂、ナイロン、親水性ポリウレタンの親水性ポリマーからなる繊維;親水化処理した疎水性ポリマーからなる繊維;疎水性ポリマーからなる疎水性部と親水性部とを備える複合繊維から選択される1種又は2種以上を含むものである上記[17]の含水ゲル組成物。
[19]不織布中の親水性繊維の含有量が、不織布中に好ましくは20質量%超であり、より好ましくは30質量%以上であり、さらに好ましくは40質量%以上であり、殊更に好ましくは50質量%以上であり、また、好ましくは100質量%以下であり、より好ましくは95質量%以下であり、さらに好ましくは90質量%以下である上記[18]の含水ゲル組成物。
[20]上記[1]~[19]いずれか1の含水ゲル組成物を基材層に積層してなる冷却用貼付シート。
[21]基材層に積層することによる、上記[1]~[19]いずれか1の含水ゲル組成物の冷却用貼付シート製造のための使用。
[22]上記成分(A)、(B)、(C)及び(D)を混合して未架橋ゲル原液を作製し、次いで片面を剥離可能なフィルムとし、他面を剥離可能なフィルム又は基材層として未架橋ゲル原液をシート化する含水ゲル組成物の製造方法。
[23]上記シート化する方法が、片面を剥離可能なフィルムとし、他面を剥離可能なフィルム又は基材層として未架橋ゲル原液を挟み込んだ後、展延する方法、或いは剥離可能なフィルム上に未架橋ゲル原液を塗工し、剥離可能なフィルム又は基剤層を積層する方法である上記[22]の含水ゲル組成物の製造方法。
[24]未架橋ゲル原液を、好ましくは0.1~5mmの厚みに展延又は塗工する上記[23]の含水ゲル組成物の製造方法。
[25]未架橋ゲル原液を、好ましくは30~60℃の加温下で1~8日間熟成させる上記[22]~[24]のいずれか1の含水ゲル組成物の製造方法。
[26]基材層として好ましくは不織布、織布、編布、又は紙に積層する、より好ましくは不織布に積層する、上記[22]~[25]のいずれか1の含水ゲル組成物の製造方法。
表1~3に示す処方にしたがい、下記方法により含水ゲル組成物を含む貼付剤を作製した。
具体的には、まずグリセリン、パラオキシ安息香酸メチルを加温溶解させたプロピレングリコール、カルボキシメチルセルロースナトリウム、乾燥水酸化アルミニウムゲルとの混合液を混練機に投入し、次にコハク酸水溶液を添加して、未架橋ゲル原液を調製した。次いで、得られた未架橋ゲル原液を、ポリエチレンテレフタレート(PET)フィルムに挟み込み、ベーカー式アプリケーターによってゲル原液の厚さを0.8mmに調整して展延した。次いで一方のPETフィルムを剥離し、展延したゲル層に不織布(パルプ:PET=80質量%:20質量%、坪量=20g/m2、エアレイド製 厚さ:0.22mm)をゲル層に張り合わせて、シート状の貼付剤にした。得られた貼付剤をアルミピローに封入して密封した後、50℃で2日間熟成し、未架橋ゲル原液中の架橋反応を進行させてゲルを形成した。架橋後のゲル層を備えた貼付剤を型抜きして、試験片を得た(50mm×100mm)。
得られた試験片を用い、下記方法にしたがって各評価を行った。
結果を表1~3に示す。
得られた貼付剤の試験片を額に貼付した際の使用感について、5名の評価者により次の基準により評価し、その平均値を四捨五入して評価値とした。
5:みずみずしく、全くべたつかない
4:みずみずしく、僅かにべたつく
3:少しべたつく
2:乾いているが、べたつく
1:乾いているが、顕著にべたつく
粘着性は、JIS Z 0237(2009年改訂版)の「傾斜式ボールタック」を参考とし、次に記載する方法にて試験を行った。水平面に対して30°傾けたポリエチレン板上に、前記で得られた貼付剤の試験片(100mm×50mm)を貼り付けた。この試験片の上部に、材質がJIS G 4805(2008年改訂版)に規定された高炭素クロム軸受鋼鋼材で、JIS B 1501(2009年改訂版)で定められたボール大きさのうち、「呼び」が1/8インチのボールを置き、重力により転がせ、置いた場所から50mm~100mmの間の50mmを通過した時間を測定した。本測定による時間は貼付剤の肌への貼りつき具合の指標となるが、時間が長過ぎるとべたつきが高くなり、肌触りの点で好ましくない。好ましくは200秒未満であり、より好ましくは5秒以上120秒未満であり、更に好ましくは10秒以上60秒未満である。
得られた貼付剤の試験片を額の肌に貼付し、眉間を上下に1cm、5回(1回/1秒)動かした際のシートの追随性について、次の基準により評価した。5名の評価者により行い、その平均値を四捨五入して評価値とした。
5:抵抗感なくしっかり追随する
4:少し抵抗感を感じるが追随する
3:抵抗感を感じるが追随する
2:少しでも動くと抵抗感を感じ、追随せず剥がれやすい
1:少しでも動くと抵抗感を強く感じ、追随せず剥がれやすい
得られた貼付剤の試験片を、50℃1ヵ月保存した後のゲルの保形性について、次の基準により評価した。5名の評価者により行い、その平均値を四捨五入して評価値とした。
5:弾性を有し非常に保形性が高い
4:弾性を有し保形性が高い
3:弾性はあるが保形性が若干低く少し柔らかい
2:弾性は少しある程度で保形性が低く柔らかい
1:弾性が無くゲルの保形性が無い
実施例1、比較例4、5及び6にて得られた貼付剤の試験片に、次の素材組成の不織布をそれぞれ積層した貼付剤の試験片を作製した。
・不織布1 PET:パルプ=80:20(質量比)のエアレイド不織布(厚み0.22mm、坪量20g/m2)
・不織布2 上層部がレーヨン:パルプ:PP+PET:PVA=37:32:28:3(質量比)、下層部がPET+PE:パルプ:PVA=82:14:4(質量比)の湿式二層不織布(厚み0.13mm、坪量24g/m2)
作製した試験片を50℃で1ヶ月保存した後に、不織布の含水ゲルに接する面と反対側の面への含水ゲルの染み出しを、次の基準にて評価した。
結果を表4に示す。
5:不織布の面に全く染み出しが確認できない
4:不織布の面の1/4以上に染み出しが確認できる。
3:不織布の面の半分以上に染み出しが確認できる。
2:不織布の面の3/4以上に染み出しが確認できる。
1:不織布の全面に染み出しが確認できる。
前記実施例にて作製したシート状の貼付剤の厚みを、JIS K6402:1976準拠の定圧厚み測定器PG-11J(テクロック社)を用い、加圧荷重3.7gf/cm2にて測定した。その結果、実施例1~23、比較例1~6の含水ゲル組成物を含む貼付剤の厚みは、1.3±0.3mmであった。また、不織布層から含水ゲル層のみを剥がし、含水ゲル層の厚みを測定したところ、1.1±0.3mmであった。
また、表4の結果によれば、本発明の含水ゲル組成物は、吸水性繊維に積層しても長期間染み出すことがなく、幅広い素材との組み合わせが可能であることがわかる。
Claims (8)
- 成分(C)が、多価金属化合物、並びに一分子内に一価のカチオン元素及び/又はアミノ基を2個以上有するカチオン性化合物から選ばれる1種又は2種以上である請求項1に記載の含水ゲル組成物。
- 成分(B)及び成分(D)以外の水溶性高分子化合物の含有量が、1質量%以下である請求項1又は2に記載の含水ゲル組成物。
- 成分(B)と成分(C)の質量比((B)/(C))が、3以上60以下である請求項1~3のいずれか1項に記載の含水ゲル組成物。
- 成分(D)が、ポリビニルアルコール、ポリビニルピロリドン、及びポリアクリルアミドから選ばれる1種又は2種以上である請求項1~4のいずれか1項に記載の含水ゲル組成物。
- 成分(B)の含有量が、2.2質量%以上6質量%以下である請求項1~5のいずれか1項に記載の含水ゲル組成物。
- 厚みが0.1mm以上4mm以下である請求項1~6のいずれか1項に記載の含水ゲル組成物。
- 次の成分(A)~(D):
(A)水 50質量%以上95質量%以下
(B)カルボキシメチルセルロース又はその塩を80質量%以上含むアニオン性水溶性高分子化合物
(C)アニオン性官能基とイオン架橋を形成する架橋剤
(D)下記一般式(1)で示されるノニオン性水溶性高分子化合物 2.5質量%以上8質量%以下
を混合して未架橋ゲル原液を作製し、次いで片面を剥離可能なフィルムとし、他面を剥離可能なフィルム又は基材層として未架橋ゲル原液をシート化する、含水ゲル組成物の製造方法。
(式(1)中、Rは-OH、-NX2(ただし、Xは-CH3又は水素原子を示す)、-OCH3、-NHCOCH3、又は-NCH3COCH3を示し、nは200~500000の数を示す。)
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| KR1020177014714A KR102471808B1 (ko) | 2014-12-26 | 2015-12-24 | 함수 겔 조성물 |
| CN201580069812.4A CN107106418B (zh) | 2014-12-26 | 2015-12-24 | 含水凝胶组合物 |
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| US11229610B2 (en) * | 2018-09-04 | 2022-01-25 | Babak Ghalili | Cannabinoid and menthol gel compositions, patches and methods |
| US11147775B2 (en) * | 2018-09-04 | 2021-10-19 | Babak Ghalili | Cannabinoid and menthol gel compositions, patches and methods |
| KR102188908B1 (ko) * | 2018-11-22 | 2020-12-09 | 재단법인대구경북과학기술원 | 점탄성 하이드로겔 |
| CN115335026B (zh) * | 2020-04-07 | 2024-10-18 | 花王株式会社 | 含有碳酸气的含水凝胶物品的制造方法 |
| JP7733412B2 (ja) * | 2020-05-14 | 2025-09-03 | 花王株式会社 | シート製品 |
| US20230381371A1 (en) * | 2021-03-12 | 2023-11-30 | Shanghai Chuangshi Medical Technology (Group) Co, Ltd | Polymer hydrogel with slow-release function and preparation method and use thereof |
| KR20240021754A (ko) * | 2021-06-15 | 2024-02-19 | 카오카부시키가이샤 | 신체 첩부용 시트 |
| JP2024085384A (ja) * | 2022-12-14 | 2024-06-26 | 花王株式会社 | 身体貼付用シート |
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| Publication number | Publication date |
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| US20180000698A1 (en) | 2018-01-04 |
| CN107106418B (zh) | 2020-12-04 |
| CN107106418A (zh) | 2017-08-29 |
| EP3238692A1 (en) | 2017-11-01 |
| JP6680532B2 (ja) | 2020-04-15 |
| EP3238692A4 (en) | 2018-08-01 |
| US10660829B2 (en) | 2020-05-26 |
| SG11201705031VA (en) | 2017-07-28 |
| TW201627376A (zh) | 2016-08-01 |
| EP3238692B1 (en) | 2021-11-24 |
| KR102471808B1 (ko) | 2022-11-28 |
| KR20170101901A (ko) | 2017-09-06 |
| JP2016124870A (ja) | 2016-07-11 |
| TWI676646B (zh) | 2019-11-11 |
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