WO2018074380A1 - 光学的立体造形用組成物 - Google Patents
光学的立体造形用組成物 Download PDFInfo
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- WO2018074380A1 WO2018074380A1 PCT/JP2017/037260 JP2017037260W WO2018074380A1 WO 2018074380 A1 WO2018074380 A1 WO 2018074380A1 JP 2017037260 W JP2017037260 W JP 2017037260W WO 2018074380 A1 WO2018074380 A1 WO 2018074380A1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K6/00—Preparations for dentistry
- A61K6/60—Preparations for dentistry comprising organic or organo-metallic additives
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K6/00—Preparations for dentistry
- A61K6/80—Preparations for artificial teeth, for filling teeth or for capping teeth
- A61K6/884—Preparations for artificial teeth, for filling teeth or for capping teeth comprising natural or synthetic resins
- A61K6/887—Compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K6/00—Preparations for dentistry
- A61K6/60—Preparations for dentistry comprising organic or organo-metallic additives
- A61K6/62—Photochemical radical initiators
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K6/00—Preparations for dentistry
- A61K6/70—Preparations for dentistry comprising inorganic additives
- A61K6/71—Fillers
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K6/00—Preparations for dentistry
- A61K6/80—Preparations for artificial teeth, for filling teeth or for capping teeth
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K6/00—Preparations for dentistry
- A61K6/80—Preparations for artificial teeth, for filling teeth or for capping teeth
- A61K6/84—Preparations for artificial teeth, for filling teeth or for capping teeth comprising metals or alloys
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F2/00—Processes of polymerisation
- C08F2/44—Polymerisation in the presence of compounding ingredients, e.g. plasticisers, dyestuffs, fillers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F2/00—Processes of polymerisation
- C08F2/46—Polymerisation initiated by wave energy or particle radiation
- C08F2/48—Polymerisation initiated by wave energy or particle radiation by ultraviolet or visible light
- C08F2/50—Polymerisation initiated by wave energy or particle radiation by ultraviolet or visible light with sensitising agents
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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
- C08K3/01—Use of inorganic substances as compounding ingredients characterized by their specific function
- C08K3/014—Stabilisers against oxidation, heat, light or ozone
-
- 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
- C08K5/00—Use of organic ingredients
- C08K5/0008—Organic ingredients according to more than one of the "one dot" groups of C08K5/01 - C08K5/59
- C08K5/005—Stabilisers against oxidation, heat, light, ozone
-
- 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
- C08K5/00—Use of organic ingredients
- C08K5/16—Nitrogen-containing compounds
- C08K5/34—Heterocyclic compounds having nitrogen in the ring
- C08K5/3467—Heterocyclic compounds having nitrogen in the ring having more than two nitrogen atoms in the ring
- C08K5/3472—Five-membered rings
- C08K5/3475—Five-membered rings condensed with carbocyclic rings
-
- 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
- C08K9/00—Use of pretreated ingredients
- C08K9/04—Ingredients treated with organic substances
Definitions
- the present invention relates to a composition for optical three-dimensional modeling and a method for producing a three-dimensional model using the same. More specifically, the present invention can obtain a three-dimensional structure that is excellent in molding accuracy and transparency, and excellent in mechanical properties represented by bending strength, bending elastic modulus, etc., and is particularly suitable for dental materials.
- the present invention relates to a composition for optical three-dimensional modeling and an optical manufacturing method of a three-dimensional model using the same.
- Patent Document 1 discloses a method of manufacturing a three-dimensional structure by repeating the process of making it so-called an optical three-dimensional structure method. And since the basic practical method was further proposed by patent document 2, many proposals regarding the optical three-dimensional modeling technique have been made.
- an ultraviolet laser controlled by a computer is selected so that a desired pattern can be obtained on the liquid surface of the liquid photocurable resin composition placed in a container. And then cured to a predetermined thickness, and then a liquid resin composition for one layer was supplied on the cured layer and irradiated with an ultraviolet laser in the same manner to be cured in the same manner as described above to be continuous.
- a method of manufacturing a three-dimensional modeled object having a final shape by repeating a lamination operation of forming a hardened layer is generally employed. In the case of this method, even if the shape of the modeled object is quite complicated, a target three-dimensional modeled object can be manufactured easily and in a relatively short time.
- stereolithography obtained by stereolithography has expanded from mere concept models to test models, prototypes, etc., and accordingly, the stereolithography has excellent molding accuracy. There is an increasing demand for this.
- it is required to have excellent mechanical characteristics in addition to such characteristics.
- prosthetics called crowns and bridges differ in shape from patient to patient and are complicated in shape, so the application of stereolithography is expected, but the required molding accuracy ( Compatibility) is very high.
- inorganic particles are generally added for the purpose of improving the strength, but there are problems that the inorganic particles are excellent in light transmission and scatter light, so that the molding accuracy tends to be lowered.
- Patent Document 3 proposes a resin composition for optical three-dimensional modeling containing an organic ultraviolet absorber. ing. Patent Document 4 describes an acrylic resin containing ultraviolet absorbing inorganic particles.
- Patent Document 1 does not specifically describe the effectiveness in a composition in which blending of inorganic particles is essential, such as a dental material.
- the acrylic resin of Patent Document 2 is intended to improve durability with respect to organic ultraviolet absorbers and is not related to molding accuracy because it is not used for a photocurable material or three-dimensional modeling.
- an object of the present invention is to provide a composition for optical three-dimensional modeling that is excellent in molding accuracy when molded by optical three-dimensional modeling, transparency of a cured product, and mechanical properties.
- Another object of the present invention is to provide a composition for optical three-dimensional modeling that is excellent in molding accuracy when molded by optical three-dimensional modeling, transparency and mechanical properties of a cured product, and particularly suitable for dental materials. To do.
- the polymerizable monomer (a) is an aliphatic compound-based bifunctional (meth) acrylate-based polymerizable monomer or an aromatic compound-based bifunctional (meth) acrylate-based polymerizable compound.
- the ultraviolet-absorbing inorganic particles (b) contain at least one ultraviolet-absorbing inorganic compound selected from the group consisting of zinc oxide, cerium oxide, europium oxide, and zirconium oxide.
- optical stereolithography composition [8] The composition for optical three-dimensional modeling according to any one of the above [1] to [6], wherein the ultraviolet absorbing inorganic particles (b) contain zinc oxide and / or cerium oxide; [9] The composition for optical three-dimensional modeling according to any one of [1] to [8], wherein an average primary particle size of the ultraviolet absorbing inorganic particles (b) is 500 nm or less; [10] The above [1] to [9], wherein the content of the ultraviolet absorbing inorganic particles (b) is 50 to 400 parts by mass with respect to 100 parts by mass of the total amount of the polymerizable monomer (a).
- compositions for optical three-dimensional modeling Any one of the compositions for optical three-dimensional modeling; [11] A dental material comprising a cured product of the optical three-dimensional structure forming composition according to any one of [1] to [10]; [12] A method for producing a three-dimensional molded article by an optical three-dimensional modeling method using the optical three-dimensional modeling composition according to any one of [1] to [10].
- composition for optical three-dimensional modeling of the present invention is excellent in molding accuracy when molded by optical three-dimensional modeling, transparency of the cured product, and mechanical properties. For this reason, the composition for optical three-dimensional model
- molding of this invention can be used suitably also as a dental material (for example, dental prosthesis).
- composition for optical three-dimensional modeling of the present invention contains a polymerizable monomer (a), ultraviolet absorbing inorganic particles (b), and a photopolymerization initiator (c).
- a polymerizable monomer
- b ultraviolet absorbing inorganic particles
- c photopolymerization initiator
- the upper limit value and the lower limit value of the numerical ranges can be appropriately combined.
- Polymerizable monomer (a) As the polymerizable monomer (a) used in the optical three-dimensional modeling composition of the present invention, a radical polymerizable monomer is preferably used.
- Specific examples of the radical polymerizable monomer in the polymerizable monomer (a) include (meth) acrylate polymerizable monomer; (meth) acrylamide polymerizable monomer; ⁇ -cyanoacrylic acid, ⁇ -Halogenated acrylic acid, crotonic acid, cinnamic acid, sorbic acid, maleic acid, itaconic acid and other esters; vinyl esters; vinyl ethers; mono-N-vinyl derivatives; styrene derivatives and the like.
- the polymerizable monomer (a) is preferably a (meth) acrylate polymerizable monomer or a (meth) acrylamide polymerizable monomer from the viewpoint of curability.
- Examples of the polymerizable monomer (a) in the present invention include a monofunctional monomer having one polymerizable group and a polyfunctional monomer having a plurality of polymerizable groups.
- Monofunctional (meth) acrylate polymerizable monomers include 2-hydroxyethyl (meth) acrylate, 2-hydroxypropyl (meth) acrylate, 3-hydroxypropyl (meth) acrylate, 4-hydroxybutyl (meth) ) Acrylate, 6-hydroxyhexyl (meth) acrylate, 10-hydroxydecyl (meth) acrylate, propylene glycol mono (meth) acrylate, glycerol mono (meth) acrylate, erythritol mono (meth) acrylate, methyl (meth) acrylate, ethyl (Meth) acrylate, propyl (meth) acrylate, isopropyl (meth) acrylate, n-butyl (meth) acrylate, sec-butyl (meth) acrylate, t-butyl (meth) acrylate, isobutyl (Meth) acrylate, n-hexyl (meth
- Monofunctional (meth) acrylamide polymerizable monomers include N- (meth) acryloylmorpholine, N, N-dimethyl (meth) acrylamide, N, N-diethyl (meth) acrylamide, N, N-di -N-propyl (meth) acrylamide, N, N-di-n-butyl (meth) acrylamide, N, N-di-n-hexyl (meth) acrylamide, N, N-di-n-octyl (meth) acrylamide N, N-di-2-ethylhexyl (meth) acrylamide, N-hydroxyethyl (meth) acrylamide, and N, N-bis (2-hydroxyethyl) acrylamide.
- a (meth) acrylamide polymerizable monomer is preferable from the viewpoint of excellent curability, and among these, N- (meth) acryloylmorpholine, N, N-dimethyl (meth) acrylamide, N, N— More preferred is diethyl (meth) acrylamide.
- polyfunctional monomer examples include aromatic compound-based bifunctional polymerizable monomers, aliphatic compound-based bifunctional polymerizable monomers, and trifunctional or higher functional polymerizable monomers. It is done.
- aromatic compound-based bifunctional polymerizable monomers examples include 2,2-bis ((meth) acryloyloxyphenyl) propane and 2,2-bis [4- (3-acryloyloxy) -2-hydroxypropoxy. Phenyl] propane, 2,2-bis [4- (3-methacryloyloxy) -2-hydroxypropoxyphenyl] propane (commonly referred to as “Bis-GMA”), 2,2-bis (4- (meth) acryloyloxyethoxyphenyl) ) Propane, 2,2-bis (4- (meth) acryloyloxypolyethoxyphenyl) propane, 2,2-bis (4- (meth) acryloyloxydiethoxyphenyl) propane, 2,2-bis (4- ( (Meth) acryloyloxytetraethoxyphenyl) propane, 2,2-bis (4- (meth) acryloyloxypenta) Toxiphenyl) propane, 2,2-bis (4- (meth) acryloyloxyd
- 2,2-bis [4- (3-methacryloyloxy) -2-hydroxypropoxyphenyl] propane (commonly referred to as “Bis-GMA”)
- 2,2-bis (4- (meth) acryloyloxypolyethoxyphenyl) propane is preferred.
- 2,2-bis (4- (meth) acryloyloxypolyethoxyphenyl) propane 2,2-bis (4-methacryloyloxypolyethoxyphenyl) propane (the average added mole number of ethoxy groups is 2.6) The compound (commonly called “D-2.6E”) is preferred.
- Aliphatic compound-based bifunctional polymerizable monomers include glycerol di (meth) acrylate, ethylene glycol di (meth) acrylate, diethylene glycol di (meth) acrylate, triethylene glycol di (meth) acrylate, propylene glycol di (Meth) acrylate, butylene glycol di (meth) acrylate, neopentyl glycol di (meth) acrylate, polyethylene glycol di (meth) acrylate, 1,3-butanediol di (meth) acrylate, 1,4-butanediol di ( (Meth) acrylate, 1,6-hexanediol di (meth) acrylate, 2-ethyl-1,6-hexanediol di (meth) acrylate, 1,9-nonanediol di (meth) acrylate, 1,10-decanediol
- 2,2,4-trimethylhexamethylene bis (2-carbamoyloxyethyl) dimethacrylate is preferable from the viewpoint of excellent curability and strength of a cured product.
- These may be used alone or in combination of two or more.
- the trifunctional or higher polymerizable monomers include trimethylolpropane tri (meth) acrylate, trimethylolethane tri (meth) acrylate, trimethylolmethane tri (meth) acrylate, pentaerythritol tri (meth) acrylate, pentaerythritol.
- examples thereof include acrylate, 1,7-diaacryloyloxy-2,2,6,6-tetra (meth) acryloyloxymethyl-4-oxyheptane, and the like.
- N, N- (2,2,4-trimethylhexamethylene) bis [2- (aminocarboxy) propane-1,3-diol] tetramethacrylate, 1 is excellent in terms of excellent curability and cured product strength.
- 7-Diacryloyloxy-2,2,6,6-tetraacryloyloxymethyl-4-oxyheptane is preferred.
- the polymerizable monomer (a) is an aliphatic compound-based bifunctional (meth) acrylate-based polymerizable monomer, or an aromatic compound-based bifunctional (meth) acrylate-based polymerizable monomer.
- the content of the bifunctional (meth) acrylate polymerizable monomer in the total amount of the polymerizable monomer (a) of 100 parts by mass is preferably 50 to 100 parts by mass, and preferably 50 to 90 parts by mass. More preferred is part by mass, and even more preferred is 55 to 85 parts by mass.
- the total amount of the polymerizable monomer (a) is 100 parts by mass, and the monofunctional (meth)
- the content of the acrylate polymerizable monomer is preferably 10 to 55 parts by mass, more preferably 10 to 50 parts by mass, and still more preferably 15 to 45 parts by mass.
- the content of a certain polymerizable monomer in 100 parts by mass of the total amount of the polymerizable monomer component means that when the total amount of the polymerizable monomer component is converted to 100% by mass, It means content (mass%) of the said polymerizable monomer.
- the content of the polymerizable monomer (a) is preferably 15 to 75% by mass, more preferably 20 to 70% by mass, and 25 to 68% by mass with respect to the entire optical three-dimensional modeling composition. Further preferred.
- UV-absorbing inorganic particles (b) The inorganic particles (b) having ultraviolet absorptivity (hereinafter also referred to as ultraviolet absorbing inorganic particles (b)) are at least selected from the group consisting of zinc oxide, cerium oxide, europium oxide, zirconium oxide and titanium oxide. Inorganic particles containing one kind of ultraviolet absorbing inorganic compound are preferred, and inorganic containing at least one kind of ultraviolet absorbing inorganic compound selected from the group consisting of zinc oxide, cerium oxide, europium oxide and zirconium oxide Particles are more preferred. Further, the ultraviolet absorbing inorganic particles (b) may be a composite of the ultraviolet absorbing inorganic compound and an inorganic compound having no ultraviolet absorbing property.
- the content of the UV-absorbing inorganic compound in the UV-absorbing inorganic particles (b) is not particularly limited as long as it contains the UV-absorbing inorganic compound as a main component, but is preferably 50% by mass or more, and 70 More preferably, it is more preferably 80% by weight or more, and particularly preferably 90% by weight or more.
- the ultraviolet absorbing inorganic particles (b) may have a content of the ultraviolet absorbing inorganic compound of 100% by mass. These ultraviolet absorbing inorganic compounds may be used alone or in combination of two or more. Among these, zinc oxide and / or cerium oxide are particularly preferable from the viewpoint of excellent transparency.
- the form of the composite is not particularly limited, and is obtained by melting and mixing the above two inorganic compounds; on the surface of one inorganic compound (for example, the ultraviolet absorbing inorganic compound), the other inorganic compound (for example, Coated with an inorganic compound that does not absorb ultraviolet light; the surface of particles of one inorganic compound (for example, the ultraviolet absorbing inorganic compound) is coated with the other inorganic compound (for example, inorganic that does not absorb ultraviolet light).
- Compound having a core-shell shape in which the compound is formed in a layer; and those in which two inorganic compounds are clustered.
- the average primary particle diameter of the ultraviolet absorbing inorganic particles (b) is preferably 500 nm or less, more preferably 1 nm to 500 nm, and more preferably 5 nm to 400 nm. More preferably, it is 10 nm to 300 nm, particularly preferably 15 nm to 200 nm.
- the average primary particle diameter of the inorganic particles can be determined by observation with an optical microscope or an electron microscope. Specifically, observation with an optical microscope is convenient for measuring a particle size of 100 nm or more, and observation with an electron microscope is convenient for measuring the particle size of a particle with a particle size of less than 100 nm.
- the particle size of particles (200 or more) observed in the unit field of view of the photograph can be obtained by measuring using image analysis type particle size distribution measurement software (Macview (Mounttech Co., Ltd.)).
- the particle diameter of the particles is obtained as an arithmetic average value of the longest length and the shortest length of the particles, and the average primary particle diameter is calculated from the number of particles and the particle diameter.
- the amount of the polymerizable monomer (a) is preferably 10 to 500 parts by mass with respect to 100 parts by mass as a whole.
- the content of the ultraviolet absorbing inorganic particles (b) is more preferably 20 parts by mass or more, further preferably 30 parts by mass or more, and more preferably 40 parts by mass or more with respect to 100 parts by mass of the total amount of the polymerizable monomer (a). Particularly preferred is 50 parts by mass or more.
- the content of the ultraviolet absorbing inorganic particles (b) is less than 10 parts by mass with respect to 100 parts by mass of the total amount of the polymerizable monomer (a), the molding accuracy of the molded product may not be obtained.
- the content of the ultraviolet absorbing inorganic particles (b) exceeds 500 parts by mass with respect to 100 parts by mass of the total amount of the polymerizable monomer (a), the viscosity of the optical three-dimensional modeling composition increases. There is a risk that it will be impossible to form.
- the content of the ultraviolet absorbing inorganic particles (b) is more preferably 400 parts by mass or less, and still more preferably 300 parts by mass or less, with respect to 100 parts by mass of the total amount of the polymerizable monomer (a).
- the content of the ultraviolet absorbing inorganic particles (b) is preferably 20 to 80% by mass, more preferably 25 to 75% by mass, and more preferably 30 to 72% by mass with respect to the entire optical three-dimensional modeling composition. More preferred is 31 to 72% by mass.
- the ultraviolet-absorbing inorganic particles (b) may contain, as necessary, an organic compound containing an acidic group; a saturated fatty acid amide, an unsaturated fatty acid amide Fatty acid amides such as saturated fatty acid bisamides and unsaturated fatty acid bisamides; surfaces with known surface treatment agents such as silane coupling agents (organosilicon compounds), organotitanium compounds, organozirconium compounds, organoaluminum compounds, etc. It may be processed.
- an acidic group-containing organic compound is preferred.
- the organic compound containing an acidic group include an acidic group-containing organic compound having at least one acidic group such as a phosphoric acid group, a pyrophosphoric acid group, a thiophosphoric acid group, a phosphonic acid group, a sulfonic acid group, and a carboxylic acid group.
- a phosphate group-containing organic compound having at least one phosphate group is preferred.
- a surface treatment layer of a mixture of two or more kinds of surface treatment agents may be used, or a surface treatment layer having a multilayer structure in which a plurality of surface treatment agent layers are laminated.
- Examples of the acid group-containing organic compound containing a phosphate group include 2-ethylhexyl acid phosphate, stearyl acid phosphate, 2- (meth) acryloyloxyethyl dihydrogen phosphate, 3- (meth) acryloyloxypropyl dihydrogen phosphate, 4- (Meth) acryloyloxybutyl dihydrogen phosphate, 5- (meth) acryloyloxypentyl dihydrogen phosphate, 6- (meth) acryloyloxyhexyl dihydrogen phosphate, 7- (meth) acryloyloxyheptyl dihydrogen phosphate, 8- (meta ) Acryloyloxyoctyl dihydrogen phosphate, 9- (meth) acryloyloxynonyl dihydrogen phosphate, 10- (meth) acrylo Ruoxydecyl dihydrogen phosphate, 11- (meth) acryloyloxyund
- an acidic group containing organic compound which has acidic groups such as a pyrophosphoric acid group, a thiophosphoric acid group, a phosphonic acid group, a sulfonic acid group, and a carboxylic acid group
- acidic groups such as a pyrophosphoric acid group, a thiophosphoric acid group, a phosphonic acid group, a sulfonic acid group, and a carboxylic acid group
- WO2012 / 042911 an acidic group containing organic compound which has acidic groups, such as a pyrophosphoric acid group, a thiophosphoric acid group, a phosphonic acid group, a sulfonic acid group, and a carboxylic acid group
- WO2012 / 042911 what is described in WO2012 / 042911 is used suitably, for example. Can do.
- saturated fatty acid amides include palmitic acid amide, stearic acid amide, and behenic acid amide.
- unsaturated fatty acid amide include oleic acid amide and erucic acid amide.
- saturated fatty acid bisamides include ethylene bispalmitic acid amide, ethylene bisstearic acid amide, and hexamethylene bisstearic acid amide.
- unsaturated fatty acid bisamides include ethylene bisoleic acid amide, hexamethylene bisoleic acid amide, N, N′-dioleyl sebacic acid amide, and the like.
- organosilicon compound examples include compounds represented by R 1 n SiX 4-n (wherein R 1 is a substituted or unsubstituted hydrocarbon group having 1 to 12 carbon atoms, and X is 1 carbon atom) To 4 alkoxy groups, hydroxy groups, halogen atoms or hydrogen atoms, n is an integer of 0 to 3, provided that when there are a plurality of R 1 and X, each may be the same or different.
- a coupling agent having a functional group capable of copolymerizing with a polymerizable monomer for example, ⁇ (meth) acryloyloxyalkyltrimethoxysilane [the number of carbon atoms between the (meth) acryloyloxy group and the silicon atom: 3-12], ⁇ - (meth) acryloyloxyalkyltriethoxysilane [the number of carbons between the (meth) acryloyloxy group and the silicon atom: 3-12], vinyltrimethoxysilane, vinyltriethoxysilane, vinyltri Acetoxysilane, ⁇ -glycidoxypropyltrimethoxysilane and the like are preferably used.
- organic titanium compound examples include tetramethyl titanate, tetraisopropyl titanate, tetra n-butyl titanate, butyl titanate dimer, and tetra (2-ethylhexyl) titanate.
- organic zirconium compound examples include zirconium isopropoxide, zirconium n-butoxide, zirconium acetylacetonate, zirconyl acetate and the like.
- organic aluminum compound examples include aluminum acetylacetonate and aluminum organic acid salt chelate compound.
- the surface treatment method a known method can be used without any particular limitation.
- the surface treatment agent is spray-added while vigorously stirring the inorganic filler, the inorganic filler and the above-mentioned solvent in a suitable solvent, and the like. There is a method of removing the solvent after dispersing or dissolving the surface treatment agent.
- the amount of the surface treatment agent used is not particularly limited, and is preferably 0.1 to 50 parts by mass with respect to 100 parts by mass of the ultraviolet absorbing inorganic particles (b), for example.
- Photopolymerization initiator (c) used in the present invention can be selected from polymerization initiators used in the general industry, and among them, the photopolymerization initiator used for dental use is preferably used.
- photopolymerization initiator (c) (bis) acylphosphine oxides, thioxanthones or quaternary ammonium salts of thioxanthones, ketals, ⁇ -diketones, coumarins, anthraquinones, benzoin alkyl ether compounds, Examples include ⁇ -aminoketone compounds.
- photopolymerization initiators (c) it is preferable to use at least one selected from the group consisting of (bis) acylphosphine oxides and salts thereof and ⁇ -diketones.
- at least one selected from the group consisting of (bis) acylphosphine oxides and salts thereof and ⁇ -diketones As a result, it has excellent photocurability in the ultraviolet region and visible light region, and lasers such as Ar laser and He—Cd laser; illumination of halogen lamp, xenon lamp, metal halide lamp, light emitting diode (LED), mercury lamp, fluorescent lamp, etc.
- the composition for optical three-dimensional modeling which shows sufficient photocurability is obtained even if it uses any light source.
- examples of the acylphosphine oxides include 2,4,6-trimethylbenzoyldiphenylphosphine oxide, 2,6-dimethoxybenzoyldiphenylphosphine oxide, and 2,6-dichlorobenzoyldiphenylphosphine.
- bisacylphosphine oxides include bis (2,6-dichlorobenzoyl) phenylphosphine oxide, bis (2,6-dichlorobenzoyl) -2,5-dimethylphenylphosphine oxide, and bis (2,6-dichlorobenzoyl).
- acylphosphine oxides 2,4,6-trimethylbenzoyldiphenylphosphine oxide, 2,4,6-trimethylbenzoylmethoxyphenylphosphine oxide, bis (2,4,6-trimethylbenzoyl) phenylphosphine Oxide and 2,4,6-trimethylbenzoylphenylphosphine oxide sodium salt are particularly preferably used as the photopolymerization initiator (c).
- Examples of the ⁇ -diketone include diacetyl, benzyl, camphorquinone, 2,3-pentadione, 2,3-octadione, 9,10-phenanthrenequinone, 4,4′-oxybenzyl, and acenaphthenequinone. .
- camphorquinone is particularly preferable when a light source in the visible light region is used.
- molding of this invention is not specifically limited, From viewpoints, such as sclerosis
- the amount is preferably 0.01 to 10 parts by mass relative to 100 parts by mass of the total amount of (a).
- the content of the photopolymerization initiator (c) is less than 0.01 parts by mass with respect to 100 parts by mass of the total amount of the polymerizable monomer (a)
- curing does not proceed sufficiently and a molded product is obtained. There is a risk of not.
- content of a photoinitiator (c) 0.05 mass part or more is more preferable with respect to 100 mass parts of whole quantity of a polymerizable monomer (a), and 0.1 mass part or more is further more preferable.
- content of the photopolymerization initiator (c) exceeds 10 parts by mass relative to 100 parts by mass of the total amount of the polymerizable monomer (a)
- solubility of the photopolymerization initiator itself is low, There is a possibility of causing precipitation from the composition for optical three-dimensional modeling.
- content of a photoinitiator (c) 7.5 mass parts or less are more preferable with respect to 100 mass parts of whole quantity of a polymerizable monomer (a), and 5 mass parts or less are still more preferable.
- Organic UV absorber (d) In the composition for optical three-dimensional model
- organic ultraviolet absorber (d) 2- (2-hydroxy-5-methylphenyl) benzotriazole (TINUVIN P), 2- (2-hydroxy-5-tert-octylphenyl) benzotriazole (TINUVIN 329), 2- (2′-hydroxy-3 ′, 5′-di-tert-butylphenyl) benzotriazole, 2- (2′-hydroxy-5′-tert-butylphenyl) benzotriazole, 2- (2′-hydroxy -3′-tert-butyl-5′-methylphenyl) benzotriazole, 2- [2′-hydroxy-3′-butyl-5 ′-(2 ′′ -carboxyoctyl-ethyl) phenyl] benzotriazole, 2- (2′-hydroxy-3 ′, 5′-di-tert-amylphenyl) benzotriazole, 2- (2′-hydroxy-3′-tert-butyl-5′-methylphenyl) benzotri Sol, 2- (2′-hydroxy
- benzotriazole compounds are preferable, and benzotriazole compounds in which a hydroxy group is bonded to the 2-position of the aromatic ring bonded to the nitrogen atom of the triazole structure are more preferable.
- Organic UV absorber (d) may be used alone or in combination of two or more.
- the content of the organic ultraviolet absorber (d) is preferably in the range of 0.001 to 10 parts by mass, more preferably in the range of 0.01 to 5 parts by mass with respect to 100 parts by mass of the polymerizable monomer (a). preferable.
- the optical three-dimensional modeling composition of the present invention is not particularly limited as long as it contains the polymerizable monomer (a), the ultraviolet absorbing inorganic particles (b), and the photopolymerization initiator (c).
- other components may be included.
- the composition for optical three-dimensional modeling of this invention can be manufactured according to a well-known method.
- the content of other components in the composition for optical three-dimensional modeling may be less than 10% by mass, less than 5.0% by mass, or less than 1.0% by mass.
- molding of this invention can contain a polymerization accelerator in order to improve photocurability within the range which does not impair the meaning of this invention.
- the polymerization accelerator include ethyl 4- (N, N-dimethylamino) benzoate, methyl 4- (N, N-dimethylamino) benzoate, and 4- (N, N-dimethylamino) benzoic acid n- Butoxyethyl, 2- (methacryloyloxy) ethyl 4-N, N-dimethylaminobenzoate, 4- (N, N-dimethylamino) benzophenone, and butyl 4- (N, N-dimethylamino) benzoate .
- an ultraviolet absorptive inorganic particle (b)
- Other particles may be further blended. Examples of other particles include organic particles, inorganic particles, and organic-inorganic composite particles. Other particles may be used alone or in combination of two or more.
- the organic particle material examples include polymethyl methacrylate, polyethyl methacrylate, methyl methacrylate-ethyl methacrylate copolymer, cross-linked polymethyl methacrylate, cross-linked polyethyl methacrylate, polyester, polyamide, polycarbonate, Polyphenylene ether, polyoxymethylene, polyvinyl chloride, polystyrene, polyethylene, polypropylene, chloroprene rubber, nitrile rubber, ethylene-vinyl acetate copolymer, styrene-butadiene copolymer, acrylonitrile-styrene copolymer, and acrylonitrile-styrene- Examples thereof include butadiene copolymers, and these may be used alone or in combination of two or more.
- the shape of the organic particles is not particularly limited, and the particle size of the particles can be appropriately selected and used. From the viewpoint of molding accuracy, the average particle size is preferably 1.0 ⁇ m or
- Examples of the inorganic particle material include quartz, silica, alumina, silica-titania, silica-titania-barium oxide, silica-zirconia, silica-alumina, lanthanum glass, borosilicate glass, soda glass, barium glass, strontium glass, Glass ceramic, aluminosilicate glass, barium boroaluminosilicate glass, strontium boroaluminosilicate glass, fluoroaluminosilicate glass, calcium fluoroaluminosilicate glass, strontium fluoroaluminosilicate glass, barium fluoroaluminosilicate glass, and strontium calcium fluoroaluminosilicate glass Can be mentioned.
- the shape of the inorganic filler is not particularly limited, and an amorphous filler or a spherical filler can be appropriately selected and used. From the viewpoint of molding accuracy and transparency, the average particle diameter is preferably 1.0 ⁇ m or less.
- a known stabilizer can be blended with the optical three-dimensional modeling composition of the present invention for the purpose of suppressing deterioration or adjusting photocurability.
- examples of such a stabilizer include a polymerization inhibitor and an antioxidant.
- polymerization inhibitor examples include hydroquinone, hydroquinone monomethyl ether, dibutyl hydroquinone, dibutyl hydroquinone monomethyl ether, t-butylcatechol, 2-t-butyl-4,6-dimethylphenol, 2,6-di-t-butylphenol, And 3,5-di-t-butyl-4-hydroxytoluene.
- the content of the polymerization inhibitor is preferably 0.001 to 1.0 part by mass with respect to 100 parts by mass of the total amount of the polymerizable monomer (a).
- the additive for optical three-dimensional modeling of the present invention can be blended with known additives for the purpose of adjusting the color tone or paste properties.
- additives include pigments, dyes, organic solvents, and thickeners.
- An embodiment (X-1) of the present invention includes a polymerizable monomer (a), ultraviolet absorbing inorganic particles (b), and a photopolymerization initiator (c), and the ultraviolet absorbing inorganic
- the composition for optical three-dimensional modeling include particles (b) containing titanium oxide.
- the aliphatic compound-based bifunctional (meth) acrylate polymerizable monomer in the embodiment (X-1) or the aromatic compound-based bifunctional The composition for optical three-dimensional model
- the polymerizable monomer (a) is a monofunctional (meth) acrylamide-based polymerizable compound.
- the composition for optical three-dimensional modeling include a monomer.
- the composition for optical three-dimensional modeling further containing an organic ultraviolet absorber (d) Is mentioned.
- the organic ultraviolet absorber (d) contains a benzotriazole-based compound.
- the average primary particle diameter of the ultraviolet absorbing inorganic particles (b) is 500 nm or less.
- a composition for optical three-dimensional modeling in any one of the embodiments (X-1) to (X-6), the content of the ultraviolet absorbing inorganic particles (b) is the polymerizable single amount.
- the composition for optical three-dimensional modeling include 50 to 400 parts by mass with respect to 100 parts by mass of the total amount of the body (a).
- the amount of each component can be changed as appropriate based on the above description, and additions, deletions, and the like can be changed for any component.
- the composition of each composition and the values of properties can be appropriately changed and combined.
- the composition for optical three-dimensional modeling of the present invention is excellent in molding accuracy, transparency of a cured product, and mechanical properties. Therefore, the optical three-dimensional modeling composition of the present invention can be applied to applications in which such advantages are utilized, for example, the production of a three-dimensional modeled article by optical three-dimensional modeling method; dental material; casting molding method or casting It can be used for production of various molded products such as film-like products or molds by means of coating; molds for coating, vacuum molding, etc., and is particularly suitable for dental materials.
- any conventionally known optical three-dimensional modeling method and apparatus can be used.
- an active energy ray means an energy beam that can cure the photocurable resin composition such as ultraviolet ray, electron beam, X-ray, radiation, high frequency and the like.
- the active energy ray may be an ultraviolet ray having a wavelength of 300 to 400 nm.
- Examples of the light source of the active energy ray include lasers such as an Ar laser and a He—Cd laser; illuminations such as halogen lamps, xenon lamps, metal halide lamps, LEDs, mercury lamps, and fluorescent lamps, and lasers are particularly preferable.
- lasers such as an Ar laser and a He—Cd laser
- illuminations such as halogen lamps, xenon lamps, metal halide lamps, LEDs, mercury lamps, and fluorescent lamps
- lasers are particularly preferable.
- a laser is used as the light source, it is possible to increase the energy level and shorten the modeling time, and to obtain a three-dimensional modeled object with high modeling accuracy using the good condensing property of the laser beam. it can.
- any of a conventionally known method and a conventionally known stereolithography system apparatus can be adopted, but the present invention is not particularly limited.
- a cured layer is formed by selectively irradiating active energy rays so that a cured layer having a desired pattern is obtained on the optical three-dimensional modeling composition.
- the method of finally obtaining the target three-dimensional molded item by repeating can be mentioned.
- the three-dimensional shaped object obtained as it is used as it is, or in some cases, post-curing by light irradiation or post-curing by heat, etc., to further improve its mechanical properties or shape stability, etc. It may be used.
- the structure, shape, size, and the like of the three-dimensional structure obtained by the optical three-dimensional modeling method are not particularly limited, and can be determined according to each application. And, as a typical application field of the optical three-dimensional modeling method of the present invention, a model for verifying the appearance design in the middle of the design; a model for checking the functionality of the part; a resin for producing a mold Molds; base models for producing molds; production of direct molds for prototype molds, and the like. More specifically, the production of precision parts, electrical / electronic parts, furniture, building structures, automotive parts, various containers, castings, molds, molds, etc. In particular, taking advantage of the properties of the cured product such as transparency and mechanical strength, it can be used very effectively in applications such as dental prostheses including crown restoration materials such as crowns and bridges.
- the present invention includes embodiments in which the above configurations are combined in various ways within the technical scope of the present invention as long as the effects of the present invention are exhibited.
- UDMA 2,2,4-trimethylhexamethylenebis (2-carbamoyloxyethyl) dimethacrylate (manufactured by Shin-Nakamura Chemical Co., Ltd.)
- D-2.6E 2,2-bis (4-methacryloyloxypolyethoxyphenyl) propane (manufactured by Shin-Nakamura Chemical Co., Ltd.)
- TEGDMA Triethylene glycol dimethacrylate (manufactured by Shin-Nakamura Chemical Co., Ltd.)
- ACMO N-acryloylmorpholine (manufactured by KJ Chemicals)
- Inorganic particles (b) -1 to (b) -3 are obtained according to the following production method.
- Inorganic particles (b) -1 10-methacryloyloxydecyl dihydrogen phosphate-treated zinc oxide powder 100 g of zinc oxide (“NANOFINE-50” manufactured by Sakai Chemical Co., Ltd.), 10-methacryloyloxydecyl dihydrogen phosphate (manufactured by Toho Chemical Co., Ltd.) 0 0.5 g and 200 mL of toluene were placed in a 500 mL one-necked eggplant flask and stirred at room temperature for 2 hours. Subsequently, toluene was distilled off under reduced pressure, followed by vacuum drying at 40 ° C. for 16 hours, further vacuum drying at 90 ° C.
- NANOFINE-50 manufactured by Sakai Chemical Co., Ltd.
- 10-methacryloyloxydecyl dihydrogen phosphate manufactured by Toho Chemical Co., Ltd.
- inorganic particles ( b) -1] were surface treated with 10-methacryloyloxydecyl dihydrogen phosphate [inorganic particles ( b) -1] was obtained.
- the inorganic particle (b) -1 particles are photographed with a scanning electron microscope (manufactured by Hitachi, Ltd., model S-4000), and the particle diameter of particles (200 or more) observed in the unit field of the photograph is expressed as follows: The average primary particle size was 25 nm as determined by measurement using image analysis type particle size distribution measurement software (Macview (Mounttech Co., Ltd.)).
- Inorganic particles (b) -2 10-methacryloyloxydecyl dihydrogen phosphate-treated silica-alumina-coated zinc oxide powder
- silica-alumina-coated zinc oxide (“NANOFINE-50A” manufactured by Sakai Chemical Co., Ltd.) was used as the inorganic particles.
- a silica-alumina-coated zinc oxide powder surface-treated with 10-methacryloyloxydecyl dihydrogen phosphate was obtained in the same manner as the particles (b) -1.
- the average primary particle diameter of the silica-alumina-coated zinc oxide powder was 30 nm.
- Inorganic particles (b) -3 10-methacryloyloxydecyl dihydrogen phosphate-treated cerium oxide powder Inorganic particles (b) ⁇ except that cerium oxide (“Ceriguard (W-500)” manufactured by Daito Kasei Co., Ltd.) was used as the inorganic particles. In the same manner as in No. 1, cerium oxide powder surface-treated with 10-methacryloyloxydecyl dihydrogen phosphate was obtained. The average primary particle diameter of the cerium oxide powder was 35 nm.
- HOB 2- (2-hydroxy-5-tert-octylphenyl) benzotriazole
- Optical components according to Examples 1 to 9 and Comparative Example 1 were mixed in the amounts shown in Tables 1 and 2 at room temperature (20 ° C. ⁇ 15 ° C., JIS (Japanese Industrial Standards) Z 8703: 1983). The paste as a composition for three-dimensional modeling was adjusted.
- a cured product having a bending strength of 100 MPa or more and a flexural modulus of 5.0 GPa or more is excellent in strength.
- the optical three-dimensional composition in Examples 1 to 9 was excellent in molding accuracy, and the cured product was excellent in transparency, bending strength and bending elastic modulus.
- the molding accuracy of the optical three-dimensional modeling composition according to Examples 1 to 9 was superior to the molding accuracy of the optical three-dimensional modeling composition according to Comparative Example 1.
- composition for optical three-dimensional modeling of the present invention is particularly suitable for dental materials because it is excellent in molding accuracy, mechanical properties and transparency when molded by optical three-dimensional modeling. Further, since the cured product is excellent in transparency even in a three-dimensional shape and has aesthetic properties required when used as a dental restoration material, it is particularly suitable as a dental restoration material (dental prosthesis).
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Abstract
Description
[1]重合性単量体(a)と、紫外線吸収性無機粒子(b)と、光重合開始剤(c)を含有する、光学的立体造形用組成物;
[2]更に有機紫外線吸収剤(d)を含有する、前記[1]の光学的立体造形用組成物;
[3]有機紫外線吸収剤(d)が、ベンゾトリアゾール系化合物を含有する、前記[2]の光学的立体造形用組成物;
[4]前記重合性単量体(a)が、(メタ)アクリレート系重合性単量体及び/又は(メタ)アクリルアミド系重合性単量体を含有する、前記[1]~[3]のいずれかの光学的立体造形用組成物;
[5]前記重合性単量体(a)が、脂肪族化合物系の二官能性(メタ)アクリレート系重合性単量体、又は芳香族化合物系の二官能性の(メタ)アクリレート系重合性単量体を含有する、前記[1]~[4]のいずれかの光学的立体造形用組成物;
[6]前記重合性単量体(a)が、単官能性の(メタ)アクリルアミド系重合性単量体を含有する、前記[1]~[5]のいずれかの光学的立体造形用組成物;
[7]前記紫外線吸収性無機粒子(b)が、酸化亜鉛、酸化セリウム、酸化ユーロピウム、及び酸化ジルコニウムからなる群から選択される少なくとも1種の紫外線吸収性の無機化合物を含有する、前記[1]~[6]のいずれかの光学的立体造形用組成物;
[8]前記紫外線吸収性無機粒子(b)が、酸化亜鉛及び/又は酸化セリウムを含有する、前記[1]~[6]のいずれかの光学的立体造形用組成物;
[9]前記紫外線吸収性無機粒子(b)の平均1次粒子径が、500nm以下である、前記[1]~[8]のいずれかの光学的立体造形用組成物;
[10]前記紫外線吸収性無機粒子(b)の含有量が、前記重合性単量体(a)の全量100質量部に対し、50~400質量部である、前記[1]~[9]のいずれかの光学的立体造形用組成物;
[11]前記[1]~[10]のいずれかの光学的立体造形用組成物の硬化物からなる歯科材料;
[12]前記[1]~[10]のいずれかの光学的立体造形用組成物を用いて、光学的立体造形法によって立体造形物を製造する方法。
本発明の光学的立体造形用組成物に用いられる重合性単量体(a)には、ラジカル重合性単量体が好適に用いられる。重合性単量体(a)におけるラジカル重合性単量体の具体例としては、(メタ)アクリレート系重合性単量体;(メタ)アクリルアミド系重合性単量体;α-シアノアクリル酸、α-ハロゲン化アクリル酸、クロトン酸、桂皮酸、ソルビン酸、マレイン酸、イタコン酸等のエステル類;ビニルエステル類;ビニルエーテル類;モノ-N-ビニル誘導体;スチレン誘導体等が挙げられる。重合性単量体(a)としては、硬化性の観点から(メタ)アクリレート系重合性単量体、(メタ)アクリルアミド系重合性単量体が好ましい。
紫外線吸収性を有する無機粒子(b)(以下、紫外線吸収性無機粒子(b)ともいう。)としては、酸化亜鉛、酸化セリウム、酸化ユーロピウム、酸化ジルコニウム及び酸化チタンからなる群から選択される少なくとも1種の紫外線吸収性の無機化合物を含有する無機粒子が好ましく、酸化亜鉛、酸化セリウム、酸化ユーロピウム、及び酸化ジルコニウムからなる群から選択される少なくとも1種の紫外線吸収性の無機化合物を含有する無機粒子がより好ましい。また、紫外線吸収性無機粒子(b)は、前記紫外線吸収性の無機化合物と、紫外線吸収性を有しない無機化合物との複合物であってもよい。紫外線吸収性無機粒子(b)における前記紫外線吸収性の無機化合物の含有量は、前記紫外線吸収性の無機化合物を主成分として含有していれば特に限定されないが、50質量%以上が好ましく、70質量%以上がより好ましく、80質量%以上がさらに好ましく、90質量%以上が特に好ましい。また、紫外線吸収性無機粒子(b)は、前記紫外線吸収性の無機化合物の含有量が100質量%であってもよい。これらの紫外線吸収性の無機化合物は、1種を単独で使用してもよく、2種以上を併用してもよい。これらの中でも、透明性に優れる観点から、酸化亜鉛及び/又は酸化セリウムが特に好ましい。
本発明に用いられる光重合開始剤(c)は、一般工業界で使用されている重合開始剤から選択して使用でき、中でも歯科用途に用いられている光重合開始剤が好ましく用いられる。
本発明の光学的立体造形用組成物では、より成形精度を向上させるために、有機紫外線吸収剤(d)を用いることができる。
UDMA:2,2,4-トリメチルヘキサメチレンビス(2-カルバモイルオキシエチル)ジメタクリレート(新中村化学社製)
D-2.6E:2,2-ビス(4-メタクリロイルオキシポリエトキシフェニル)プロパン(新中村化学社製)
TEGDMA:トリエチレングリコールジメタクリレート(新中村化学社製)
ACMO:N-アクリロイルモルホリン(KJケミカルズ社製)
無機粒子(b)-1~(b)-3は、以下の製造方法に従って得られる。
酸化亜鉛(堺化学社製「NANOFINE-50」)100g、10-メタクリロイルオキシデシルジヒドロジェンホスフェート(東邦化学社製)0.5g及びトルエン200mLを500mLの一口ナスフラスコに入れ、室温で2時間攪拌した。続いて、減圧下トルエンを留去した後、40℃で16時間真空乾燥し、さらに90℃で3時間真空乾燥し、10-メタクリロイルオキシデシルジヒドロジェンホスフェートで表面処理した酸化亜鉛粉〔無機粒子(b)-1〕を得た。無機粒子(b)-1の粒子を走査型電子顕微鏡(日立製作所製、S-4000型)で写真に撮り、その写真の単位視野内に観察される粒子(200個以上)の粒子径を、画像解析式粒度分布測定ソフトウェア(Macview(株式会社マウンテック))を用いて測定することにより求めたところ、平均1次粒子径は25nmであった。
無機粒子としてシリカ-アルミナコート酸化亜鉛(堺化学社製「NANOFINE-50A」)を使用した以外、無機粒子(b)-1と同様に処理して、10-メタクリロイルオキシデシルジヒドロジェンホスフェートで表面処理したシリカ-アルミナコート酸化亜鉛粉を得た。前記シリカ-アルミナコート酸化亜鉛粉の平均1次粒子径は30nmであった。
無機粒子として酸化セリウム(大東化成社製「セリガード(W-500)」)を使用した以外、無機粒子(b)-1と同様に処理して、10-メタクリロイルオキシデシルジヒドロジェンホスフェートで表面処理した酸化セリウム粉を得た。前記酸化セリウム粉の平均1次粒子径は35nmであった。
TPO:2,4,6-トリメチルベンゾイルジフェニルホスフィンオキシド
HOB:2-(2-ヒドロキシ-5-tert-オクチルフェニル)ベンゾトリアゾール
BHT:3,5-ジ-t-ブチル-4-ヒドロキシトルエン
各実施例及び比較例の表1及び表2に記載の組成物について、光造形機(DWS社製 DigitalWax(登録商標) 028J-Plus)を用いて、10.0mmの立方体の造形物を製造した。得られた造形物を、メタノールで洗浄し、未重合の単量体を除去した後、マイクロメーターを用いて寸法(単位:mm)を測定し、下記の式により、成形精度を算出した。この方法により、成形精度(寸法誤差)が5.0%以下である場合、成形精度に優れ、クラウン等の歯科用補綴物を造形した場合に、適合性に優れたものとなりやすい。
各実施例及び比較例の表1及び表2に記載の組成物について、光造形機(DWS社製 DigitalWax(登録商標) 028J-Plus)を用いて、直径15.0mm×厚さ1.0mmのディスク状の造形物を製造した。得られた造形物を、メタノールで洗浄し、未重合の単量体を除去した後、歯科技工用LED重合装置アルファライトV(モリタ東京製作所製)で90秒さらに重合し、硬化物を得た。得られた硬化物をシリコンカーバイド紙1000番で研磨し、続いて歯科用ラッピングフィルム(3M社製)で研磨した後、37℃の水中に24時間保管した後、分光色差計(日本電色工業(株)製、SE2000、D65光源)を用いて、透明性ΔLを測定した。透明性ΔLは以下の式で定義される。なお、高い審美性を確保するために、透明性(ΔL)が25以上である必要がある。結果を表1及び表2にそれぞれ示す。
ΔL=L*W-L*B
(式中、L*Wは、白背景で測定されるJIS Z 8781-4:2013のL*a*b*表色系における明度指数L*を表し、L*Bは、黒背景で測定されるL*a*b*表色系における明度指数L*を表す。)
各実施例及び比較例の表1及び表2に記載の組成物について、光造形機(DWS社製 DigitalWax(登録商標) 028J-Plus)を用いて、長さ25.0mm×幅2.0mm×厚さ2.0mmの直方体の造形物を製造した。得られた造形物を、メタノールで洗浄し、未重合の単量体を除去した後、歯科技工用LED重合装置アルファライトV(モリタ東京製作所製)で90秒さらに重合し、硬化物を得た。得られた硬化物をシリコンカーバイド紙300番で研磨した後、37℃の水中に24時間保管した後、精密万能試験機(島津製作所社製、商品コード「AGI-100」)を用いて、支点間距離20mm、クロスヘッドスピード1mm/分で曲げ強度及び曲げ弾性率を測定した。曲げ強度が100MPa以上であり、かつ曲げ弾性率が5.0GPa以上である硬化物は強度に優れる。
Claims (12)
- 重合性単量体(a)と、
紫外線吸収性無機粒子(b)と、
光重合開始剤(c)を含有する、光学的立体造形用組成物。 - 更に有機紫外線吸収剤(d)を含有する、請求項1に記載の光学的立体造形用組成物。
- 前記有機紫外線吸収剤(d)が、ベンゾトリアゾール系化合物を含有する、請求項2に記載の光学的立体造形用組成物。
- 前記重合性単量体(a)が、(メタ)アクリレート系重合性単量体及び/又は(メタ)アクリルアミド系重合性単量体を含有する、請求項1~3のいずれか1項に記載の光学的立体造形用組成物。
- 前記重合性単量体(a)が、脂肪族化合物系の二官能性(メタ)アクリレート系重合性単量体、又は芳香族化合物系の二官能性の(メタ)アクリレート系重合性単量体を含有する、請求項1~4のいずれか1項に記載の光学的立体造形用組成物。
- 前記重合性単量体(a)が、単官能性の(メタ)アクリルアミド系重合性単量体を含有する、請求項1~5のいずれか1項に記載の光学的立体造形用組成物。
- 前記紫外線吸収性無機粒子(b)が、酸化亜鉛、酸化セリウム、酸化ユーロピウム、及び酸化ジルコニウムからなる群から選択される少なくとも1種の紫外線吸収性の無機化合物を含有する、請求項1~6のいずれか1項に記載の光学的立体造形用組成物。
- 前記紫外線吸収性無機粒子(b)が、酸化亜鉛及び/又は酸化セリウムを含有する、請求項1~6のいずれか1項に記載の光学的立体造形用組成物。
- 前記紫外線吸収性無機粒子(b)の平均1次粒子径が、500nm以下である、請求項1~8のいずれか1項に記載の光学的立体造形用組成物。
- 前記紫外線吸収性無機粒子(b)の含有量が、前記重合性単量体(a)の全量100質量部に対し、50~400質量部である、請求項1~9のいずれか1項に記載の光学的立体造形用組成物。
- 請求項1~10のいずれか1項に記載の光学的立体造形用組成物の硬化物からなる歯科材料。
- 請求項1~10のいずれか1項に記載の光学的立体造形用組成物を用いて、光学的立体造形法によって立体造形物を製造する方法。
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| EP17862364.1A EP3530676B1 (en) | 2016-10-21 | 2017-10-13 | Composition for optical three-dimensional modeling |
| AU2017345913A AU2017345913B2 (en) | 2016-10-21 | 2017-10-13 | Composition for optical three-dimensional modeling |
| CN201780064652.3A CN109803989B (zh) | 2016-10-21 | 2017-10-13 | 光学立体造型用组合物 |
| CA3041461A CA3041461C (en) | 2016-10-21 | 2017-10-13 | Composition for optical three-dimensional modeling |
| JP2018546303A JP7017514B2 (ja) | 2016-10-21 | 2017-10-13 | 光学的立体造形用組成物 |
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| EP (1) | EP3530676B1 (ja) |
| JP (1) | JP7017514B2 (ja) |
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| AU (1) | AU2017345913B2 (ja) |
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| WO2021177462A1 (ja) * | 2020-03-06 | 2021-09-10 | クラレノリタケデンタル株式会社 | 光造形用樹脂組成物 |
| JP2022007167A (ja) * | 2020-06-25 | 2022-01-13 | 株式会社ディーメック | 樹脂型の製造方法 |
| JP2022041276A (ja) * | 2020-08-31 | 2022-03-11 | クラレノリタケデンタル株式会社 | 光造形用樹脂組成物 |
| US11744781B2 (en) | 2019-08-26 | 2023-09-05 | Shofu Inc. | Dental photopolymerizable composition for 3D printer |
| WO2025062934A1 (ja) | 2023-09-22 | 2025-03-27 | 株式会社トクヤマデンタル | 三次元光造形用硬化性組成物及びその製造方法、並びに三次元光造形物の製造方法 |
| KR20250148596A (ko) | 2023-02-09 | 2025-10-14 | 가부시키가이샤 도쿠야마 덴탈 | 3차원 광조형용 경화성 조성물 및 그 제조방법, 3차원 광조형물의 제조방법 및 치과용 수복물의 제조방법 |
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| EP3669854B1 (en) * | 2017-09-07 | 2026-04-08 | GC Corporation | Photopolymerizable dental composition |
| US20210317297A1 (en) * | 2018-07-11 | 2021-10-14 | Structo Pte Ltd | Methods and composition of a dental model for the manufacture of orthodontic appliances without the use of separator |
| CN113993497B (zh) * | 2019-06-28 | 2024-03-22 | 株式会社可乐丽 | 固化性组合物和包含其的光造形用树脂组合物 |
| CN110669163A (zh) * | 2019-10-15 | 2020-01-10 | 常州增材制造研究院有限公司 | 3d打印感光聚合物组合物 |
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| KR20250148596A (ko) | 2023-02-09 | 2025-10-14 | 가부시키가이샤 도쿠야마 덴탈 | 3차원 광조형용 경화성 조성물 및 그 제조방법, 3차원 광조형물의 제조방법 및 치과용 수복물의 제조방법 |
| WO2025062934A1 (ja) | 2023-09-22 | 2025-03-27 | 株式会社トクヤマデンタル | 三次元光造形用硬化性組成物及びその製造方法、並びに三次元光造形物の製造方法 |
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| Publication number | Publication date |
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| US10786435B2 (en) | 2020-09-29 |
| AU2017345913B2 (en) | 2022-07-21 |
| CN109803989B (zh) | 2022-03-08 |
| EP3530676A4 (en) | 2020-06-17 |
| EP3530676B1 (en) | 2024-08-14 |
| JP7017514B2 (ja) | 2022-02-08 |
| JPWO2018074380A1 (ja) | 2019-08-22 |
| US20190254936A1 (en) | 2019-08-22 |
| CN109803989A (zh) | 2019-05-24 |
| EP3530676A1 (en) | 2019-08-28 |
| AU2017345913A1 (en) | 2019-05-23 |
| CA3041461A1 (en) | 2018-04-26 |
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