WO2015146550A1 - 2ペースト重合性組成物 - Google Patents
2ペースト重合性組成物 Download PDFInfo
- Publication number
- WO2015146550A1 WO2015146550A1 PCT/JP2015/056734 JP2015056734W WO2015146550A1 WO 2015146550 A1 WO2015146550 A1 WO 2015146550A1 JP 2015056734 W JP2015056734 W JP 2015056734W WO 2015146550 A1 WO2015146550 A1 WO 2015146550A1
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- WIPO (PCT)
- Prior art keywords
- meth
- paste
- mass
- compound
- acrylate
- Prior art date
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Classifications
-
- 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
- A61K6/61—Cationic, anionic or redox initiators
-
- 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
- A61K6/90—Compositions for taking dental impressions
-
- 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
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/62—Monocarboxylic acids having ten or more carbon atoms; Derivatives thereof
- C08F220/68—Esters
-
- 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
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/26—Esters containing oxygen in addition to the carboxy oxygen
- C08F220/28—Esters containing oxygen in addition to the carboxy oxygen containing no aromatic rings in the alcohol moiety
- C08F220/283—Esters containing oxygen in addition to the carboxy oxygen containing no aromatic rings in the alcohol moiety and containing one or more carboxylic moiety in the chain, e.g. acetoacetoxyethyl(meth)acrylate
Definitions
- the present invention relates to a polymerizable composition used in dental treatment, and more particularly to a two-paste polymerizable composition that hardly generates an unpolymerized layer by polymerization under oxygen.
- a combination of an organic peroxide and an aromatic tertiary amine has long been used as a polymerization catalyst for polymerizing a paste-like composition containing methacrylate or acrylate monomers having radical polymerization properties and oligomers and prepolymers thereof at room temperature.
- a paste-like composition containing methacrylate or acrylate monomers having radical polymerization properties and oligomers and prepolymers thereof at room temperature.
- Patent Document 1 the amount of organic peroxide and aromatic tertiary amine blended in the paste-like composition is adjusted and the polymerization curing time is adjusted by using a polymerization inhibitor in combination, or the paste-form before polymerization It provides storage stability to the composition.
- this composition is known to produce an unpolymerized layer due to polymerization under oxygen (polymerization inhibition), and is used for dental purposes such as a composite resin for restoration, a resin for building abutment teeth, and a resin for preparing temporary prostheses.
- the polymerizable composition had problems such as poor operability and difficulty in polishing.
- a paste-like polymerizable composition containing a ternary catalyst of a pyrimidinetrione derivative, an organic metal compound, and an organic halogen compound is disclosed (for example, see Patent Document 2).
- this composition also has a problem that polymerization is inhibited.
- a dental composition for example, see Patent Document 3 in which a hydroperoxide, a thiourea derivative, and a copper compound are combined, or a dental composition using a hydrogen peroxide polyvinylpyrrolidone complex (for example, see Patent Document 4).
- a dental composition using a hydrogen peroxide polyvinylpyrrolidone complex for example, see Patent Document 4
- Cumene hydroperoxide, and compositions using acetylthiourea see, for example, Patent Document 5 have been disclosed, but the problem of polymerization inhibition has not been solved even in these dental compositions.
- both the first agent and the second agent contain a polymerizable monomer
- the first agent and the second agent contain a polymerizable monomer
- the first agent and the second agent there is also disclosed a redox-curing dental composition in which one of them contains an oxidizing agent and the other contains a reducing agent, aromatic sulfinic acid and / or a salt thereof and a tertiary aliphatic amine (for example, , See Patent Document 6), and this composition does not solve the problem of polymerization inhibition.
- an object of the present invention is to provide a polymerizable composition that hardly causes an unpolymerized layer by polymerization under oxygen.
- the present inventors have found that a polymerizable composition containing a polymerization catalyst in which an aromatic sulfinic acid and / or a salt thereof, an organic metal compound, or an organic halogen compound is combined can be used in polymerization under oxygen.
- the present invention was completed by finding that a cured product having a high catalytic activity and having almost no unpolymerized layer was obtained.
- the first invention of the present invention is: (A) a (meth) acrylate compound, A first paste containing (b) an aromatic sulfinic acid and / or salt thereof, and (c) an acidic compound; (A) a (meth) acrylate compound, A second paste containing (d) an organometallic compound and (e) an organohalogen compound; Consisting of Furthermore, at least one of the first paste and the second paste, (F) A two-paste polymerizable composition comprising a filler.
- the second invention is: (A ′) a (meth) acrylate compound having no acid group, (A '') a (meth) acrylate compound having an acid group, and (b) a first paste containing an aromatic sulfinic acid and / or a salt thereof; (A) a (meth) acrylate compound, A second paste containing (d) an organometallic compound and (e) an organohalogen compound; Consisting of Furthermore, at least one of the first paste and the second paste, (F) A two-paste polymerizable composition comprising a filler.
- the third invention of the present invention is (A) a (meth) acrylate compound, A first paste containing (b) an aromatic sulfinic acid and / or salt thereof, and (c) an acidic compound; (A) a (meth) acrylate compound, A second paste containing (d) an organometallic compound and (e) an organohalogen compound; Consisting of Furthermore, the two-paste polymerizable composition is characterized in that neither the first paste nor the second paste contains (f) a filler.
- the 2-paste polymerizable composition according to the present invention is an excellent polymerizable composition that hardly generates an unpolymerized layer by polymerization under oxygen.
- One paste of the two-paste polymerizable composition according to the present invention is defined as a first paste.
- the first paste contains (a) (meth) acrylate compound, (b) aromatic sulfinic acid and / or salt thereof, and (c) acidic compound, and further described below.
- a filler may be included in relation to two pastes.
- the first paste comprises (a ′) a (meth) acrylate compound having no acid group, (a ′′) a (meth) acrylate compound having an acid group, (b) It may contain aromatic sulfinic acid and / or a salt thereof, and may further contain (f) filler in relation to the second paste described later.
- the second invention of the present invention is the (a) (meth) acrylate compound of the first invention, (a ′) a (meth) acrylate compound having no acid group, and (a ′′) an acid group. It is the same as that of 1st invention except the point which contains both the (meth) acrylate compound which has this, and the point which does not make (c) acidic compound of 1st invention an essential component. Therefore, the description is not distinguished except for these points.
- (A) Component (meth) acrylate compound becomes a base material of the polymerizable composition by polymerization and curing.
- the “(meth) acrylate compound” means various monomers, oligomers and prepolymers of an acrylate compound or a methacrylate compound.
- the (a) (meth) acrylate compound can be further divided into (a ′) a (meth) acrylate compound having no acid group and (a ′′) a (meth) acrylate compound having an acid group.
- a ′ a (meth) acrylate compound having no acid group
- a ′′ a (meth) acrylate compound having an acid group.
- (meth) acrylate compounds having no acid group include methyl (meth) acrylate, ethyl (meth) acrylate, isopropyl (meth) acrylate, n-butyl (meth) acrylate, and isobutyl (meth).
- Et monomer or oligomer or prepolymer can be suitably used.
- a (meth) acrylate having a urethane bond di-2- (meth) acryloxyethyl-2,2,4-trimethylhexamethylene dicarbamate, 1,3,5-tris [1,3-bis ⁇ ( (Meth) acryloyloxy ⁇ -2-propoxycarbonylaminohexane] -1,3,5- (1H, 3H, 5H) triazine-2,4,6-trione, 2,2-bis [4- ⁇ 3- (meta ) Acryloyloxy-2-hydroxypropyl ⁇ phenyl] propane, 2,2-bis [4- ⁇ (meth) acryloxyethoxy ⁇ phenyl] propane, and other 2,2′-di (4-hydroxycyclohexyl) propane Of urethane oligomers comprising 2-oxypanone, hexamethylene diisocyanate and 2-hydroxyethyl (meth)
- a (meth) acrylate compound having an acid group it has 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 (meta )
- 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 (meta )
- Acrylate compounds are exemplified.
- examples of (meth) acrylate compounds having an acid group include 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- (meth) acryloyloxyoctyl dihydrogen phosphate, 9- (meth) acryloyloxynonyl dihydrogen phosphate, 10- (meth) ) Acryloyloxydecyl dihydrogen phosphate, 11- (meth) acryloyloxyund
- examples of (meth) acrylate compounds having an acid group include bis [2- (meth) acryloyloxyethyl pyrophosphate], bis [ 4- (meth) acryloyloxybutyl], bis [6- (meth) acryloyloxyhexyl] pyrophosphate, bis [8- (meth) acryloyloxyoctyl] pyrophosphate, bis [10- (meth) acryloyloxydecyl pyrophosphate And their acid chlorides, alkali metal salts, ammonium salts and the like.
- examples of the (meth) acrylate compound having a thiophosphate group include 2- (meth) acryloyloxyethyl dihydrogenthiophosphate, 3- (meta) ) Acryloyloxypropyl dihydrogenthiophosphate, 4- (meth) acryloyloxybutyl dihydrogenthiophosphate, 5- (meth) acryloyloxypentyl dihydrogenthiophosphate, 6- (meth) acryloyloxyhexyl dihydrogenthio Phosphate, 7- (meth) acryloyloxyheptyl dihydrogenthiophosphate, 8- (meth) acryloyloxyoctyl dihydrogenthiophosphate, 9- (meth) acryloyloxynonyl dihydride Genthiophosphate, 10- (meth) acryloyloxydecyl dihydrogen thiophosphat
- examples of the (meth) acrylate compound having an acid group (a ′′) include 2- (meth) acryloyloxyethylphenylphosphonate and 5- (meth) acryloyloxy.
- (meth) acrylate compounds having an acid group include 2- (meth) acrylamide-2-methylpropanesulfonic acid, 2-sulfoethyl (meth) Examples include acrylates.
- the (meth) acrylate compound having a carboxylic acid group includes a polymerizable monomer having one carboxyl group in the molecule and a plurality of monomers in the molecule.
- polymerizable monomers having one carboxyl group in the molecule include (meth) acrylic acid, N- (meth) acryloylglycine, and N- (meta).
- (meth) acrylate compounds having an acid group include 2- (meth) acryloyloxyethyl hydrogen succinate, 2- ( (Meth) acryloyloxyethyl hydrogen phthalate, 2- (meth) acryloyloxyethyl hydrogen maleate, 6- (meth) acryloyloxyhexane-1,1-dicarboxylic acid, 9- (meth) acryloyloxynonane-1,1- Dicarboxylic acid, 10- (meth) acryloyloxydecane-1,1-dicarboxylic acid, 11- (meth) acryloyloxyundecane-1,1-dicarboxylic acid, 12- (meth) acryloyloxidedecane-1,1-dicarboxylic acid , 13- (Meth) acryloyloxytri Can-1,1-dicar
- the (a ′) acid group-free (meth) acrylate compound and (a ′′) acid group-containing (meth) acrylate compound listed above can be used alone or in admixture of two or more.
- the blending amount of the (a) (meth) acrylate compound in the first paste is preferably 15% by mass or more and 95% by mass or less. If it is less than 15% by mass, pasting is difficult, and if it exceeds 95% by mass, the operability tends to decrease and the strength tends to decrease. More preferably, it is 40 mass% or more and 80 mass% or less.
- the compounding quantity of the (a) (meth) acrylate compound and (a '') (meth) acrylate compound which has an acid group to the 1st paste is the total amount. It is preferable that they are 15 mass% or more and 95 mass% or less. If it is less than 15% by mass, pasting is difficult, and if it exceeds 95% by mass, the operability tends to decrease and the strength tends to decrease. More preferably, it is 40 mass% or more and 80 mass% or less.
- p-toluenesulfinic acid sodium p-toluenesulfinate, potassium p-toluenesulfinate, lithium p-toluenesulfinate, calcium p-toluenesulfinate, benzenesulfinic acid, sodium benzenesulfinate, benzenesulfin Potassium oxide, lithium benzenesulfinate, calcium benzenesulfinate, 2,4,6-trimethylbenzenesulfinic acid, sodium 2,4,6-trimethylbenzenesulfinate, potassium 2,4,6-trimethylbenzenesulfinate, 2, Lithium 4,6-trimethylbenzenesulfinate, calcium 2,4,6-trimethylbenzenesulfinate, 2,4,6-triethylbenzenesulfinate, 2,4,6-triethylbenzenesulfinate Thorium, potassium 2,4,6-triethylbenzenesulf
- 2,4,6-trimethylbenzenesulfinic acid sodium 2,4,6-trimethylbenzenesulfinate, potassium 2,4,6-trimethylbenzenesulfinate, , 4,6-trimethylbenzenesulfinate lithium, 2,4,6-trimethylbenzenesulfinate calcium, 2,4,6-triethylbenzenesulfinate, sodium 2,4,6-triethylbenzenesulfinate, 2,4,6- Potassium 6-triethylbenzenesulfinate, lithium 2,4,6-triethylbenzenesulfinate, calcium 2,4,6-triethylbenzenesulfinate, 2,4,6-triisopropylbenzenesulfinate, 2,4,6- Sodium triisopropylbenzenesulfinate Potassium 2,4,6-triisopropyl benzene sulfinic acid, 2,4,6-triisopropyl
- the blending amount of the aromatic sulfinic acid and / or salt thereof is preferably 0.01% by mass or more and 5% by mass or less. If it is less than 0.01% by mass, it is difficult to obtain a sufficient effect, and even if it exceeds 5% by mass, the effect is hardly changed. More preferably, it is 0.1 mass% or more and 3 mass% or less.
- the acidic compound of component (c) is blended into the first paste as necessary in order to make the first paste acidic.
- the activity of the component (b) aromatic sulfinic acid and / or salt thereof is improved.
- Specific examples of acidic compounds include organic acids such as citric acid, succinic acid, oxalic acid, fumaric acid, tartaric acid, malic acid, maleic acid, ethylenediaminetetraacetic acid, polyacrylic acid, and maleic acid acrylic acid copolymer.
- inorganic acids such as phosphoric acid, hydrochloric acid, sulfuric acid and nitric acid, and ester derivatives thereof. These can be used alone or in admixture of two or more.
- the first paste always contains a (meth) acrylate compound having an acid group (a ′′), whereby the first paste becomes acidic. Therefore, it is not always necessary to add the acidic compound (c) as in the first invention.
- the amount of the acidic compound (c) in the first invention is preferably 0.01% by mass or more and 20% by mass or less in the first paste. If it is less than 0.01% by mass, it is difficult to increase the activity of (b) the aromatic sulfinic acid and / or salt thereof, and if it exceeds 20% by mass, the activity of (b) the aromatic sulfinic acid and / or salt thereof decreases. , The preservability of the paste tends to deteriorate. More preferably, it is 0.1 mass% or more and 10 mass% or less.
- filler is added to at least one of the first paste and the second paste in order to increase the strength of the cured product of the composition or improve the operability of the paste. Is preferably blended.
- Said (f) filler is, for example, a silane coupling agent such as ⁇ -methacryloxypropyltrimethoxysilane, vinyltrichlorosilane, vinyltriethoxysilane, vinyltrimethoxysilane, vinyltriacetoxysilane, vinyltri (methoxyethoxy) silane, etc. It may be surface-treated. Acetic acid or the like can be added to the silane coupling agent. Of these, anhydrous silicic acid, hydrous silicic acid, hydrous calcium silicate, and hydrous aluminum silicate are preferred because they have the effect of preventing the components before polymerization from gelling even when stored for a long period of time.
- an organic-inorganic composite filler prepared by previously mixing the (f) filler with the (meth) acrylate compound and curing it, followed by pulverization.
- These fillers can be used alone or in admixture of two or more.
- fillers of different substances may be used for the first paste and the second paste.
- fine silicic acid 0.01 ⁇ m or more and 0.1 ⁇ m or less can be used.
- the blending amount is preferably 5% by mass or more and 80% by mass or less in the first paste. If the amount is less than 5% by mass, the viscosity of the paste tends to be insufficient. If the amount exceeds 80% by mass, the paste tends to be too hard and the operability tends to decrease. More preferably, it is 15 mass% or more and 60 mass% or less.
- the other paste of the two-paste polymerizable composition according to the present invention is a second paste.
- the second paste contains the aforementioned (a) (meth) acrylate compound, (d) an organometallic compound, (e) an organic halogen compound, and further contains (f) a filler in relation to the aforementioned first paste. is there.
- the (a) (meth) acrylate compound used for the second paste can be the same as the compound used for the first paste.
- different (meth) acrylate compounds may be used for the first paste and the second paste.
- the blending amount of the (a) (meth) acrylate compound in the second paste is preferably 15% by mass or more and 95% by mass or less. If it is less than 15% by mass, pasting is difficult, and if it exceeds 95% by mass, the operability tends to be poor and the strength tends to decrease. More preferably, it is 40 mass% or more and 80 mass% or less.
- the polymerization catalyst blended in the second paste is (d) an organometallic compound and (e) an organohalogen compound. These react with (b) the aromatic sulfinic acid and / or salt thereof in the first paste to generate radicals.
- Examples of the organic metal compound (d) include acetylacetone copper, copper 4-cyclohexylbutyrate, copper gluconate, copper acetate, copper oleate, manganese acetylacetone, manganese naphthenate, manganese octylate, cobalt acetylacetone, cobalt naphthenate, acetylacetone
- Examples include lithium, lithium acetate, zinc acetylacetone, zinc naphthenate, acetylacetone nickel, nickel acetate, acetylacetone aluminum, acetylacetone calcium, acetylacetone chromium, acetylacetone iron, sodium naphthenate, and rare earth octoate. These can be used alone or in admixture of two or more.
- the amount of the organometallic compound is preferably 0.001% by mass or more and 1% by mass or less in the second paste. If it is less than 0.001, the effect is difficult to obtain, and if it exceeds 1% by mass, the composition after polymerization tends to discolor. More preferably, it is 0.005 mass% or more and 0.1 mass% or less.
- organic halogen compound (e) benzyltributylammonium chloride, benzyldimethylcetylammonium chloride, benzyldimethylstearylammonium chloride, benzyltriethylammonium bromide, benzyltrimethylammonium chloride, cetalkonium chloride, cetylpyridinium bromide, cetylpyrimidi Nium chloride, cetyltriethylammonium bromide, didecyldimethylammonium chloride, dilauryldimethylammonium chloride, benzyllauryldimethylammonium chloride, domifene bromide, lauryltrimethylammonium chloride, tetra-n-butylammonium bromide, tetra-n-butylammonium chloride Rye , Tetra -n- butylammonium iodide, tetradecyltrimethylam
- the amount of the organic halogen compound is preferably 0.001% by mass or more and 10% by mass or less in the second paste. If it is less than 0.001% by mass, the effect is difficult to obtain, and if it exceeds 10% by mass, it becomes insoluble in the second paste and it is difficult to obtain a polymerization reaction. More preferably, it is 0.01 mass% or more and 1 mass% or less, More preferably, it is 0.05 mass% or more and 0.5 mass% or less.
- a filler may be added to the second paste in order to increase the strength of the cured product of the composition or improve the operability of the paste.
- the filler (f) used for the second paste those usable for the first paste can be used.
- different fillers may be used for the first paste and the second paste.
- the blending amount is preferably 5% by mass or more and 80% by mass or less in the second paste. If the amount is less than 5% by mass, the viscosity of the paste tends to be insufficient. If the amount exceeds 80% by mass, the paste tends to be too hard and the operability tends to decrease. More preferably, it is 15 mass% or more and 60 mass% or less.
- the first paste contains (a) (meth) acrylate compound, (b) aromatic sulfinic acid and / or salt thereof, (c) acidic compound, and (f) does not contain filler.
- the second paste contains the aforementioned (a) (meth) acrylate compound, (d) an organometallic compound, and (e) an organic halogen compound, and (f) does not contain a filler.
- the first paste and the second paste contains (f) filler, on the contrary, the first paste and the second paste None of these is the same as the first invention except that (f) the filler is not included. Therefore, explanation is omitted.
- the third invention of the present invention can be used when it is desired to obtain a cured product with low strength and a cured product with low viscosity since (f) the filler is not included. It is also possible to optimize strength and viscosity by adding a plasticizer or the like.
- the two-paste polymerizable composition according to the present invention includes a polymerization inhibitor such as dibutylhydroxytoluene, a photopolymerization catalyst such as camphorquinone, a peroxide, an antioxidant, an ultraviolet absorber, a colorant, an antibacterial agent, and a fluorescent agent.
- a polymerization inhibitor such as dibutylhydroxytoluene
- a photopolymerization catalyst such as camphorquinone
- a peroxide such as camphorquinone
- an antioxidant such as camphorquinone
- an antioxidant such as camphorquinone
- an antioxidant such as camphorquinone
- an ultraviolet absorber such as sodium bicarbonate
- colorant such as sodium bicarbonate
- an antibacterial agent such as sodium bicarbonate
- a fluorescent agent such as sodium bicarbonate, sodium bicarbonate, sodium bicarbonate, sodium bicarbonate, sodium bicarbonate, sodium bicarbonate, sodium bicarbonate, sodium bicarbonate, sodium bicarbonate, sodium bi
- a solvent can be added to the two-paste polymerizable composition according to the present invention in order to adjust the pH or improve the storage stability due to the chelating effect of metal ions.
- the solvent include organic solvents such as water and ethanol.
- As a compounding quantity of a solvent 0 to 80 mass% is preferable. When it exceeds 80% by mass, there is a tendency that other components are too small to be cured.
- the mixing ratio of the first paste to the second paste is preferably in the range of 1:10 to 10: 1 by mass ratio. If it is out of this range, the operability tends to decrease. More preferably, it is in the range of 1: 4 to 4: 1.
- the two-paste polymerizable composition according to the present invention may further divide the first paste and / or the second paste into a plurality of pastes as long as the above-mentioned principle of action is improved to increase the polymerization reaction and storage stability.
- a polymerizable composition apparently made into a paste of 3 or more is also included.
- a silicone impression material trade name: Fusion, manufactured by GC Corporation
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Abstract
Description
一方、この組成物は酸素下における重合で未重合層が生じる(重合阻害)ことが知られており、修復用コンポジットレジン、支台歯築造用レジン、暫間補綴物作製用レジン等の歯科用の重合性組成物としては操作性が悪く研磨が行いにくい等の問題があった。
(a)(メタ)アクリレート化合物、
(b)芳香族スルフィン酸及び/又はその塩、並びに
(c)酸性化合物
を含む第1ペーストと、
(a)(メタ)アクリレート化合物、
(d)有機金属化合物、及び
(e)有機ハロゲン化合物
を含む第2ペーストと、
から構成され、
さらに、第1ペースト、第2ペーストの少なくとも一方に、
(f)フィラー
を含むことを特徴とする2ペースト重合性組成物である。
(a’)酸基を持たない(メタ)アクリレート化合物、
(a’’)酸基を有する(メタ)アクリレート化合物、並びに
(b)芳香族スルフィン酸及び/又はその塩
を含む第1ペーストと、
(a)(メタ)アクリレート化合物、
(d)有機金属化合物、及び
(e)有機ハロゲン化合物
を含む第2ペーストと、
から構成され、
さらに、第1ペースト、第2ペーストの少なくとも一方に、
(f)フィラー
を含むことを特徴とする2ペースト重合性組成物である。
(a)(メタ)アクリレート化合物、
(b)芳香族スルフィン酸及び/又はその塩、並びに
(c)酸性化合物
を含む第1ペーストと、
(a)(メタ)アクリレート化合物、
(d)有機金属化合物、及び
(e)有機ハロゲン化合物
を含む第2ペーストと、
から構成され、
さらに、第1ペースト、第2ペーストの何れにも
(f)フィラー
を含まないことを特徴とする2ペースト重合性組成物である。
ここで、本発明のうち第2の発明においては、第1ペーストに(a’’)酸基を有する(メタ)アクリレート化合物を必ず含むため、(c)酸性化合物は必ずしも含まない。
ガラス板(20mm×30mm×1mm)の上に、シリコーン印象材(商品名:フージョン、株式会社ジーシー製)で作製した直方体の型(20mm×20mm×1mm)を乗せ、さらにその上に金属リング(内径15mm×高さ1mm)を乗せる。その後、各実施例及び各比較例について、第1ペースト、第2ペーストを1:1の質量比で混合練和して得られた練和物を金属リングに充填、さらに上述のシリコーン印象材型、ガラス板の順に乗せ圧接した。練和開始から5分後、ガラス板、シリコーン印象材型を取り外し、硬化体表面のベタつきを目視、触感にて観察した。すべての作業は温度23℃、湿度50%の恒温恒湿下で行った。結果を纏めて表1、表2に示す。なお、ベタつきは下記に示す基準で評価した。
◎:ベタつき全くなし
○:ベタつき僅かにあり
×:ベタつきあり
Claims (5)
- (a)(メタ)アクリレート化合物、
(b)芳香族スルフィン酸及び/又はその塩、並びに
(c)酸性化合物
を含む第1ペーストと、
(a)(メタ)アクリレート化合物、
(d)有機金属化合物、及び
(e)有機ハロゲン化合物
を含む第2ペーストと、
から構成され、
さらに、第1ペースト、第2ペーストの少なくとも一方に、
(f)フィラー
を含むことを特徴とする2ペースト重合性組成物。 - (a)(メタ)アクリレート化合物:15質量%以上95質量%以下、
(b)芳香族スルフィン酸及び/又はその塩:0.01質量%以上5質量%以下、
(c)酸性化合物:0.01質量%以上20質量%以下、並びに
(f)フィラー:5質量%以上80質量%以下
を含む第1ペーストと、
(a)(メタ)アクリレート化合物:15質量%以上95質量%以下、
(d)有機金属化合物:0.001質量%以上1質量%以下、
(e)有機ハロゲン化合物:0.001質量%以上10質量%以下、及び
(f)フィラー:5質量%以上80質量%以下
を含む第2ペーストと、
から構成される請求項1に記載の2ペースト重合性組成物。 - (a’)酸基を持たない(メタ)アクリレート化合物、
(a’’)酸基を有する(メタ)アクリレート化合物、並びに
(b)芳香族スルフィン酸及び/又はその塩
を含む第1ペーストと、
(a)(メタ)アクリレート化合物、
(d)有機金属化合物、及び
(e)有機ハロゲン化合物
を含む第2ペーストと、
から構成され、
さらに、第1ペースト、第2ペーストの少なくとも一方に、
(f)フィラー
を含むことを特徴とする2ペースト重合性組成物。 - (a’)酸基を持たない(メタ)アクリレート化合物と(a’’)酸基を有する(メタ)アクリレート化合物の合計:15質量%以上95質量%以下、
(b)芳香族スルフィン酸及び/又はその塩:0.01質量%以上5質量%以下、並びに
(f)フィラー:5質量%以上80質量%以下
を含む第1ペーストと、
(a)(メタ)アクリレート化合物:15質量%以上95質量%以下、
(d)有機金属化合物:0.001質量%以上1質量%以下、
(e)有機ハロゲン化合物:0.001質量%以上10質量%以下、及び
(f)フィラー:5質量%以上80質量%以下
を含む第2ペーストと、
から構成される請求項3に記載の2ペースト重合性組成物。 - (a)(メタ)アクリレート化合物、
(b)芳香族スルフィン酸及び/又はその塩、並びに
(c)酸性化合物
を含む第1ペーストと、
(a)(メタ)アクリレート化合物、
(d)有機金属化合物、及び
(e)有機ハロゲン化合物
を含む第2ペーストと、
から構成され、
さらに、第1ペースト、第2ペーストの何れにも
(f)フィラー
を含まないことを特徴とする2ペースト重合性組成物。
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