WO2016117292A1 - 硬化性オルガノポリシロキサン組成物、その硬化物、および硬化皮膜の形成方法 - Google Patents
硬化性オルガノポリシロキサン組成物、その硬化物、および硬化皮膜の形成方法 Download PDFInfo
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- WO2016117292A1 WO2016117292A1 PCT/JP2016/000099 JP2016000099W WO2016117292A1 WO 2016117292 A1 WO2016117292 A1 WO 2016117292A1 JP 2016000099 W JP2016000099 W JP 2016000099W WO 2016117292 A1 WO2016117292 A1 WO 2016117292A1
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- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G75/00—Macromolecular compounds obtained by reactions forming a linkage containing sulfur with or without nitrogen, oxygen, or carbon in the main chain of the macromolecule
- C08G75/02—Polythioethers
- C08G75/04—Polythioethers from mercapto compounds or metallic derivatives thereof
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- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
- C08G59/18—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing
- C08G59/40—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the curing agents used
- C08G59/66—Mercaptans
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- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G75/00—Macromolecular compounds obtained by reactions forming a linkage containing sulfur with or without nitrogen, oxygen, or carbon in the main chain of the macromolecule
- C08G75/02—Polythioethers
- C08G75/0204—Polyarylenethioethers
- C08G75/0245—Block or graft polymers
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- C08G75/00—Macromolecular compounds obtained by reactions forming a linkage containing sulfur with or without nitrogen, oxygen, or carbon in the main chain of the macromolecule
- C08G75/02—Polythioethers
- C08G75/04—Polythioethers from mercapto compounds or metallic derivatives thereof
- C08G75/045—Polythioethers from mercapto compounds or metallic derivatives thereof from mercapto compounds and unsaturated compounds
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/10—Esters; Ether-esters
- C08K5/101—Esters; Ether-esters of monocarboxylic acids
- C08K5/103—Esters; Ether-esters of monocarboxylic acids with polyalcohols
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/16—Nitrogen-containing compounds
- C08K5/17—Amines; Quaternary ammonium compounds
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/16—Nitrogen-containing compounds
- C08K5/20—Carboxylic acid amides
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L83/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
- C08L83/04—Polysiloxanes
- C08L83/08—Polysiloxanes containing silicon bound to organic groups containing atoms other than carbon, hydrogen and oxygen
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
- C09D183/04—Polysiloxanes
- C09D183/06—Polysiloxanes containing silicon bound to oxygen-containing groups
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
- C09D183/04—Polysiloxanes
- C09D183/08—Polysiloxanes containing silicon bound to organic groups containing atoms other than carbon, hydrogen, and oxygen
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/04—Polysiloxanes
- C08G77/20—Polysiloxanes containing silicon bound to unsaturated aliphatic groups
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/04—Polysiloxanes
- C08G77/22—Polysiloxanes containing silicon bound to organic groups containing atoms other than carbon, hydrogen and oxygen
- C08G77/28—Polysiloxanes containing silicon bound to organic groups containing atoms other than carbon, hydrogen and oxygen sulfur-containing groups
Definitions
- the present invention relates to a curable organopolysiloxane composition, a cured product thereof, and a method for forming a cured film using the composition.
- Patent Document 1 discloses a mercapto group-containing organopolysiloxane obtained by hydrolytic condensation reaction of a mercaptoalkylalkoxysilane and another organoalkoxysilane, and an epoxy resin having at least two epoxy groups in one molecule.
- Patent Document 2 discloses an organosilane having a silicon atom-bonded hydroxyl group and / or a silicon atom-bonded alkoxy group and / or a condensate thereof, a polyfunctional (meth) acrylic monomer, or (meta A coating composition comprising an addition reaction product of an acrylic group-containing alkoxysilane and / or a condensate thereof with a mercapto group-containing alkoxysilane and / or a condensation reaction product thereof, an epoxy group-containing compound, and a curing catalyst has been proposed. .
- An object of the present invention is to provide a curable organopolysiloxane composition that has a good curability even at a relatively low temperature of 30 ° C. or less and that forms a cured film having excellent adhesion to the coating, and the coating It is in providing the hardened
- Another object of the present invention is to provide a method for forming a cured film at a relatively low temperature.
- the curable organopolysiloxane composition of the present invention comprises (A) Average composition formula: X a R 1 b SiO (4-ab) / 2 Wherein X is at least one mercapto group selected from the group consisting of a mercaptoalkyl group and a mercaptoaryl group, and R 1 is a hydrogen atom, an alkyl group having 1 to 12 carbon atoms, or an alkyl group having 2 to 12 carbon atoms.
- C and d are numbers satisfying 0 ⁇ c ⁇ 1, 0 ⁇ d ⁇ 3, and 0.8 ⁇ c + d ⁇ 3.
- the cured product of the present invention is characterized by curing the above curable organopolysiloxane composition.
- the method for forming a cured film of the present invention is characterized in that the curable organopolysiloxane composition is applied to an object to be coated and cured at ⁇ 5 to 30 ° C.
- the curable organopolysiloxane composition of the present invention is characterized in that it has good curability at a relatively low temperature and can form a cured film having excellent adhesion to an object to be coated. Further, the method for forming a cured film of the present invention is characterized in that the curable organopolysiloxane composition can be rapidly cured at a relatively low temperature.
- the (A) component mercapto group-containing organopolysiloxane is the main component of the present composition and has an average composition formula: X a R 1 b SiO (4-ab) / 2 It is represented by
- X is at least one mercapto group selected from the group consisting of a mercaptoalkyl group and a mercaptoaryl group.
- the mercaptoalkyl group include a 3-mercaptopropyl group, a 4-mercaptobutyl group, and a 6-mercaptohexyl group.
- the mercaptoaryl include a 4-mercaptophenyl group, a 4-mercaptomethylphenyl group, and a 4- (2-mercaptoethyl) phenyl group.
- the component (A) has at least two mercapto groups (X) in one molecule.
- R 1 is a hydrogen atom, an alkyl group having 1 to 12 carbon atoms, an alkenyl group having 2 to 12 carbon atoms, an aryl group having 6 to 20 carbon atoms, an aralkyl group having 7 to 20 carbon atoms, a hydroxyl group, or An alkoxy group having 1 to 6 carbon atoms.
- the alkyl group include methyl group, ethyl group, propyl group, butyl group, pentyl group, hexyl group, heptyl group, octyl group, nonyl group, decyl group, undecyl group, and dodecyl group. From this point, a methyl group is preferable.
- alkenyl group examples include vinyl group, allyl group, butenyl group, pentenyl group, hexenyl group, heptenyl group, octenyl group, nonenyl group, decenyl group, undecenyl group, and dodecenyl group. From the viewpoint, a vinyl group, an allyl group, a hexenyl group, and an octenyl group are preferable.
- the aryl group include a phenyl group, a tolyl group, a xylyl group, a naphthyl group, a biphenyl group, and a phenoxyphenyl group.
- a phenyl group, a tolyl group, and a naphthyl group are preferable.
- an aryl group, particularly a phenyl group into the organopolysiloxane of the component (A)
- the compatibility with the component (B) is improved, and the weather resistance of the resulting cured product tends to be improved.
- the aralkyl group include a benzyl group, a phenethyl group, and a methylphenylmethyl group.
- alkyl groups groups in which some or all of the hydrogen atoms bonded to these alkyl groups, alkenyl groups, aryl groups, or aralkyl groups are substituted with halogen atoms such as chlorine atoms and bromine atoms are also exemplified.
- alkoxy group examples include a methoxy group, an ethoxy group, an n-propoxy group, an i-propoxy group, an n-butoxy group, a sec-butoxy group, and a tert-butoxy group.
- R 1 may have two or more of these groups.
- a represents the ratio of the mercapto group (X) to the silicon atom, and is a number satisfying 0 ⁇ a ⁇ 1, preferably 0 ⁇ a ⁇ 0.6, or 0 ⁇ a ⁇ 0.4.
- b is a hydrogen atom relative to a silicon atom, an alkyl group having 1 to 12 carbon atoms, an alkenyl group having 2 to 12 carbon atoms, an aryl group having 6 to 20 carbon atoms, an aralkyl group having 7 to 20 carbon atoms, a hydroxyl group Or a number satisfying 0 ⁇ b ⁇ 3 indicating the proportion of the alkoxy group having 1 to 6 carbon atoms.
- the sum of a and b is a number satisfying 0.8 ⁇ a + b ⁇ 3, preferably 1 ⁇ a + b ⁇ 2.2 or 1 ⁇ a + b ⁇ 2.0.
- a is a number within the above range
- the resulting curable organopolysiloxane composition has good curability at relatively low temperatures, and the resulting cured product has good mechanical strength. It is.
- cured material improves that b is a number within the said range.
- the sum of a and b is within the above range, the resulting curable organopolysiloxane composition has good curability at a relatively low temperature, and the resulting cured product has good mechanical strength. Because.
- the molecular weight of the component (A) is not particularly limited, but the weight average molecular weight measured by gel permeation chromatography is preferably 1,000 or more and 50,000 or less.
- the weight average molecular weight of the component (A) is not less than the lower limit of the above range, the resulting cured product has good mechanical properties, and on the other hand, when it is not more than the upper limit of the above range, the resulting curable organo This is because the curing rate of the polysiloxane composition is improved.
- Examples of the component (A) include organopolysiloxanes represented by the following average unit formula.
- Me, Ph, Vi, and Thi each represent a methyl group, a phenyl group, a vinyl group, and a 3-mercaptopropyl group, and x1, x2, x3, and x4 are positive numbers, respectively.
- X1, x2, x3, x4 is 1.
- the component (A) may be one kind of organopolysiloxane or a mixture of at least two kinds of organopolysiloxane.
- the mixture may be one represented by the above average composition formula.
- the compound of the component (B) is a component for curing the present composition by reacting with the mercapto group in the component (A).
- Component (B) is a compound having at least two functional groups selected from the group consisting of an acryloyl group, a methacryloyl group, and an epoxy group in one molecule, and the components (B1) to (B4) ) At least one compound selected from the group consisting of components.
- Component (B1) has an average composition formula: Y c R 2 d SiO (4-cd) / 2 It is organopolysiloxane represented by these.
- Y is at least one group selected from the group consisting of an acryloxyalkyl group and a methacryloxyalkyl group.
- the acryloxyalkyl group include a 3-acryloxypropyl group, a 4-acryloxybutyl group, and a 6-acryloxyhexyl group.
- the methacryloxyalkyl group include a 3-methacryloxypropyl group and a 4-methacryloxybutyl group.
- the component (B1) has at least two groups (Y) in one molecule.
- R 2 is a hydrogen atom, an alkyl group having 1 to 12 carbon atoms, an alkenyl group having 2 to 12 carbon atoms, an aryl group having 6 to 20 carbon atoms, an aralkyl group having 7 to 20 carbon atoms, a hydroxyl group, or An alkoxy group having 1 to 6 carbon atoms.
- the alkyl group include methyl group, ethyl group, propyl group, butyl group, pentyl group, hexyl group, heptyl group, octyl group, nonyl group, decyl group, undecyl group, and dodecyl group. From this point, a methyl group is preferable.
- alkenyl group examples include vinyl group, allyl group, butenyl group, pentenyl group, hexenyl group, heptenyl group, octenyl group, nonenyl group, decenyl group, undecenyl group, and dodecenyl group. From the viewpoint, a vinyl group, an allyl group, a hexenyl group, and an octenyl group are preferable.
- the aryl group include a phenyl group, a tolyl group, a xylyl group, a naphthyl group, a biphenyl group, and a phenoxyphenyl group.
- a phenyl group, a tolyl group, and a naphthyl group are preferable.
- an aryl group, particularly a phenyl group into the organopolysiloxane of component (B1), the weather resistance of the resulting cured product tends to be improved.
- the aralkyl group include a benzyl group, a phenethyl group, and a methylphenylmethyl group.
- alkyl groups groups in which some or all of the hydrogen atoms bonded to these alkyl groups, alkenyl groups, aryl groups, or aralkyl groups are substituted with halogen atoms such as chlorine atoms and bromine atoms are also exemplified.
- alkoxy group examples include a methoxy group, an ethoxy group, an n-propoxy group, an i-propoxy group, an n-butoxy group, a sec-butoxy group, and a tert-butoxy group.
- R 2 may have two or more of these groups.
- c is a number satisfying 0 ⁇ c ⁇ 1, preferably 0 ⁇ c ⁇ 0.6, or 0 ⁇ c ⁇ 0.4, indicating the ratio of the group (Y) to the silicon atom.
- d is a hydrogen atom relative to a silicon atom, an alkyl group having 1 to 12 carbon atoms, an alkenyl group having 2 to 12 carbon atoms, an aryl group having 6 to 20 carbon atoms, an aralkyl group having 7 to 20 carbon atoms, a hydroxyl group Or a number satisfying 0 ⁇ d ⁇ 3 indicating the proportion of the alkoxy group having 1 to 6 carbon atoms.
- the sum of a and b is a number satisfying 0.8 ⁇ c + d ⁇ 3, preferably 1 ⁇ c + d ⁇ 2.2 or 1 ⁇ c + d ⁇ 2.0.
- c is a number within the above range
- the resulting curable organopolysiloxane composition has good curability at a relatively low temperature, and the resulting cured product has good mechanical strength. It is.
- cured material improves that d is a number within the said range.
- the total of c and d is within the above range, the resulting curable organopolysiloxane composition has good curability at a relatively low temperature, and the resulting cured product has good mechanical strength. Because.
- the molecular weight of the component (B1) is not particularly limited, but the weight average molecular weight measured by gel permeation chromatography is preferably 1,000 or more and 50,000 or less.
- the weight average molecular weight of the component (B1) is not less than the lower limit of the above range, the resulting cured product has good mechanical properties, and on the other hand, if it is not more than the upper limit of the above range, the resulting curable organo This is because the curing rate of the polysiloxane composition is improved.
- Examples of the component (B1) include organopolysiloxanes represented by the following average unit formula.
- Me, Ph, Vi, and Ac each represent a methyl group, a phenyl group, a vinyl group, and a 3-acryloxypropyl group, and y1, y2, y3, and y4 are each a positive number, and one molecule The sum of y1, y2, y3, and y4 is 1.
- the component (B1) may be one type of organopolysiloxane or a mixture of at least two types of organopolysiloxane.
- the mixture may be one represented by the above average composition formula.
- the component (B2) is a non-siloxane compound having at least two groups selected from the group consisting of acryloyl groups and methacryloyl groups in one molecule.
- the non-siloxane compound is a compound having no siloxane bond (Si—O—Si) in the molecule, and specifically, a compound other than acryloyl group and / or methacryloyl group-containing organopolysiloxane. .
- the molecular weight of the component (B2) is not particularly limited, but is preferably in the range of 200 to 2,000, in the range of 200 to 1,500, or in the range of 300 to 1,500.
- the component is a non-siloxane compound having at least two epoxy groups in one molecule.
- the non-siloxane compound is a compound that does not have a siloxane bond (Si—O—Si) in the molecule, and specifically, is a compound other than an epoxy group-containing organopolysiloxane.
- the molecular weight of component (B3) is not particularly limited, but is preferably in the range of 200 to 2,000, in the range of 200 to 1,500, or in the range of 300 to 1,500. This is because when the molecular weight of the component (B3) is equal to or higher than the lower limit of the above range, the volatility of the component (B3) is reduced and the problem of odor is reduced. This is because the compatibility with the component (A) is improved.
- Component (B3) includes 1,4-butanediol diglycidyl ether, 1,6-hexanediol diglycidyl ether, bisphenol A diglycidyl ether, hydrogenated bisphenol A diglycidyl ether, neopentyl glycol diglycidyl ether, ethylene glycol Diglycidyl ethers such as diglycidyl ether, diethylene glycol diglycidyl ether, propylene glycol diglycidyl ether, polyethylene glycol diglycidyl ether, and polypropylene glycol diglycidyl ether; glycerin diglycidyl ether, glycerin triglycidyl ether, diglycerol polyglycidyl Glycerin derivatives such as ether and polyglycerol polyglycidyl ether; trimethylo Trimethylolpropane derivatives such as rupropane triglycidyl ether; diglycid
- the component (B4) is a compound having at least one group selected from the group consisting of an acryloyl group and a methacryloyl group and an epoxy group in one molecule.
- the molecular weight of the component (B4) is not particularly limited, but is preferably in the range of 200 to 2,000, in the range of 200 to 1,500, or in the range of 300 to 1,500. This is because when the molecular weight of the component (B4) is not less than the lower limit of the above range, the volatility of the component (B4) becomes low and the problem of odor is reduced, while on the other hand, it is below the upper limit of the above range. This is because the compatibility with the component (A) is improved.
- Component (B4) includes hydroxyl group-containing acrylate diglycidyl ethers such as 4-hydroxybutyl acrylate glycidyl ether; acrylic acid epoxy-containing alkyl esters such as 3,4-epoxycyclohexylmethyl acrylate; and mixtures of two or more thereof Is exemplified.
- the content of the component (B) is such that the total of the functional groups in this component is within the range of 0.3 to 3 mol, preferably 1 mol of the mercapto group in the component (A). , In the range of 0.5 to 2 mol, or in the range of 0.8 to 1.5 mol. This is because when the content of the component (B) is not less than the lower limit of the above range, the resulting curable organopolysiloxane composition is sufficiently cured, and on the other hand, it is not greater than the upper limit of the above range. This is because the mechanical strength of the cured product is improved.
- Component (C) is a component for accelerating curing of the composition at low temperature, and is an amine compound having no NH bond and / or a phosphine compound having no PH bond.
- Examples of the amine compound include triethylamine, tri-n-propylamine, tri-n-butylamine, tri-i-butylamine, tri-n-hexylamine, tri-n-octylamine, triphenylamine, and N, N-dimethyl.
- Examples of the phosphine compound include triphenylphosphine, triorthotolylphosphine, triparatolylphosphine, tris (paramethoxyphenyl) phosphine, diphenylcyclohexylphosphine, tricyclohexylphosphine, triethylphosphine, tripropylphosphine, tri-n-butylphosphine, Examples include tri-t-butylphosphine, tri-n-hexylphosphine, and tri-n-octylphosphine.
- tertiary amine compounds are preferable, and these may be used alone or in combination of at least two.
- the bath life of the curable organopolysiloxane composition of the present invention can be adjusted.
- the content of component (C) is in the range of 0.01 to 10% by mass with respect to the total amount of components (A) to (C). This is because the curing reaction of the resulting composition is promoted when the content of the component (C) is at least the lower limit of the above range, and the cured product obtained when the content is below the upper limit of the above range. This is because it becomes difficult to color even by aging.
- the bath life of the present composition can be adjusted by appropriately adjusting the content of the component (C).
- This composition can be used in the absence of a solvent. However, if it is desired to lower the viscosity of this composition or form a cured product on a thin film, it contains (D) an organic solvent as necessary. Also good.
- the organic solvent is not particularly limited as long as it does not inhibit the curing of the composition and can uniformly dissolve the entire composition.
- the organic solvent preferably has a boiling point of 70 ° C.
- the content of the organic solvent is not particularly limited, but is in the range of 0 to 3,000 parts by mass, or 0 to 1,000 parts per 100 parts by mass in total of the components (A) to (C). It is preferably within the range of 000 parts by mass.
- the viscosity at 25 ° C. of the composition is not particularly limited, but is preferably in the range of 10 to 100,000 mPa ⁇ s, or in the range of 10 to 10,000 mPa ⁇ s.
- an organic solvent can be added to this composition, and it can also adjust to the said viscosity range.
- components other than the above as necessary include fumed silica, crystalline silica, fused silica, wet silica, titanium oxide, zinc oxide, iron oxide, and the like.
- Metal oxide fine powders Adhesive agents such as vinyltriethoxysilane, allyltrimethoxysilane, allyltriethoxysilane, 3-glycidoxypropyltrimethoxysilane, 3-methacryloxypropyltrimethoxysilane; other nitrides
- conventionally known additives such as inorganic fillers such as sulfides, pigments, heat resistance improvers and the like can be contained.
- This composition can be prepared by uniformly mixing the components (A) to (C) and, if necessary, any other components.
- any composition that can be mixed at room temperature using various stirrers or kneaders and does not easily cure during mixing may be mixed under heating.
- the curing of the composition proceeds even at a relatively low temperature of -5 to 30 ° C.
- hardening can also be accelerated
- the time required for the curing reaction depends on the types of the components (A) to (C), but is generally within 24 hours at a relatively low temperature.
- the cured product of the present invention is obtained by curing the curable organopolysiloxane composition.
- the shape of the cured product is not particularly limited, and examples thereof include a sheet shape, a film shape, and a tape shape.
- the composition can be applied to a film-like substrate, a tape-like substrate, or a sheet-like substrate and then cured at ⁇ 5 to 30 ° C. to form a cured film on the surface of the substrate.
- the film thickness of the cured film is not particularly limited, but is preferably in the range of 10 to 500 ⁇ m, or in the range of 50 to 100 ⁇ m.
- This composition can be applied to a coating of a substrate having poor heat resistance because curing proceeds even at a relatively low temperature.
- the coating method of the present composition include gravure coating, offset coating, offset gravure, roll coating, reverse roll coating, air knife coating, curtain coating, and comma coating.
- Such base materials include paperboard, cardboard paper, clay coated paper, polyolefin laminated paper, especially polyethylene laminated paper, synthetic resin film / sheet / coating film, natural fiber cloth, synthetic fiber cloth, and artificial leather cloth. Examples thereof include metal foil, metal plate and concrete.
- a synthetic resin film / sheet / coating film is preferable.
- the present composition is generally applied on a coating film made of an epoxy resin, an acrylic resin, a urethane resin or the like.
- Me, Ph, Thi, Ac, and Ep represent a methyl group, a phenyl group, a 3-mercaptopropyl group, a 3-acryloxypropyl group, and a 3-glycidoxypropyl group, respectively.
- viscosity, weight average molecular weight, mercapto equivalent, acryloxy equivalent, and epoxy equivalent were measured as follows.
- Weight average molecular weight The weight average molecular weight in terms of standard polystyrene was determined by gel permeation chromatography using an RI detector.
- the solid content was filtered to obtain a colorless and transparent liquid having a viscosity of 560 mPa ⁇ s.
- This liquid has a weight average molecular weight of 4,000 and a mercapto equivalent weight of 260 g / mol.
- the average unit formula is: (Me 2 SiO 2/2 ) 0.65 (ThiSiO 3/2 ) 0.35 Average composition formula: Thi 0.35 Me 1.30 SiO 1.18 It was confirmed that it is the mercapto group containing organopolysiloxane represented by these.
- Solvent-free curable organopolysiloxane compositions having the compositions shown in Tables 1 and 2 were prepared using the following components.
- the functional group in the component (B) was adjusted to an amount of 1 mol with respect to 1 mol of the mercapto group in the component (A).
- (A-1) Mercapto group-containing organopolysiloxane prepared in Synthesis Example 1
- B As the component (B), the following components were used.
- B-1) Multifunctional acrylate (manufactured by Nippon Kayaku Co., Ltd., KAYARAD TMPTA)
- B-2) Neopentyl glycol diglycidyl ether (manufactured by Tokyo Chemical Industry Co., Ltd.)
- B-3) Acryloxy group-containing organopolysiloxane prepared in Synthesis Example 2
- B-4) 4-hydroxybutyl acrylate glycidyl ether (manufactured by Nippon Kasei Co., Ltd., 4HBAGE)
- C As the component (C), the following components were used.
- C-1) 2,6,10-trimethyl-2,6,10-triazaundecane (c-2): 2,4,6-tris (dimethylaminomethyl) phenol
- c-3) 2, 6-Dimethyl-2,6-diazaheptane
- C-4 Toluene solution of 1,8-diazabicyclo [5,4,0] undecene (active ingredient 1% by mass)
- C-5 Dibutyltin dilaurate (Nitto Kasei Co., Ltd., Neostan U-100)
- the curable organopolysiloxane composition was evaluated as follows.
- Examples 10 and 11 A solvent-type curable organopolysiloxane composition having the composition shown in Table 3 was prepared using the above components and the following components.
- the functional group in the component (B) was fixed in an amount of 1 mol with respect to 1 mol of the mercapto group in the component (A).
- (D) As the component (D), the following components were used.
- the curable organopolysiloxane composition was evaluated as follows.
- the curable organopolysiloxane composition was applied by flow coating onto a glass plate, dried and cured at room temperature for 1 day, and further dried and cured at 70 ° C. for 2 hours.
- the adhesion of the cured film on the glass plate was evaluated by a cross cut test (JIS K5400). As a result of the evaluation, “ ⁇ ” indicates that the cured film does not peel off, and “ ⁇ ” indicates that the cured film is peeled off.
- the curable organopolysiloxane composition of the present invention has a fast curing at 25 ° C., a fast curing at ⁇ 2 ° C., and good adhesion of the resulting cured film. was confirmed.
- the curable organopolysiloxane composition of the present invention has a good curability even at a relatively low temperature and forms a cured film having excellent adhesion to an object to be coated, It is suitable for coating a poor object to be coated or a structure that is difficult to use a heating means.
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Abstract
Description
(A)平均組成式:
XaR1 bSiO(4-a-b)/2
(式中、Xはメルカプトアルキル基およびメルカプトアリール基からなる群より選択される少なくとも1種のメルカプト基であり、R1は水素原子、炭素数1~12のアルキル基、炭素数2~12のアルケニル基、炭素数6~20のアリール基、炭素数7~20のアラルキル基、水酸基、または炭素数1~6のアルコキシ基であり、但し、一分子中、少なくとも2個のXを有し、aおよびbは、0<a<1、0<b<3、0.8<a+b<3を満たす数である。)
で表されるメルカプト基含有オルガノポリシロキサン、
(B)アクリロイル基、メタクリロイル基、およびエポキシ基からなる群から選択される少なくとも1種の官能基を一分子中に少なくとも2個有する化合物であって、
(B1)平均組成式:
YcR2 dSiO(4-c-d)/2
(式中、Yはアクリロキシアルキル基およびメタクリロキシアルキル基からなる群から選択される少なくとも1種の基であり、R2は水素原子、炭素数1~12のアルキル基、炭素数2~12のアルケニル基、炭素数6~20のアリール基、炭素数7~20のアラルキル基、水酸基、または炭素数1~6のアルコキシ基であり、但し、一分子中、少なくとも2個のYを有し、cおよびdは、0<c<1、0<d<3、0.8<c+d<3を満たす数である。)
で表されるオルガノポリシロキサン、
(B2)アクリロイル基およびメタクリロイル基からなる群から選択される少なくとも1種の基を一分子中に少なくとも2個有する非シロキサン化合物、
(B3)エポキシ基を一分子中に少なくとも2個有する非シロキサン化合物、および
(B4)一分子中に、アクリロイル基およびメタクリロイル基からなる群から選択される少なくとも1種の基、およびエポキシ基を有する化合物
からなる群より選択される少なくとも1種の化合物{(A)成分中のメルカプト基1モルに対して、(B)成分中の官能基が0.3~3モルとなる量}、および
(C)N-H結合を有さないアミン化合物および/またはP-H結合を有さないホスフィン化合物{(A)成分~(C)成分の合計量に対して、0.01~10質量%となる量}
から少なくともなることを特徴とする。
XaR1 bSiO(4-a-b)/2
で表される。
(Me3SiO1/2)x1(Me2SiO2/2)x2(MeThiSiO2/2)x3(PhSiO3/2)x4
(Me2ViSiO1/2)x1(Me2SiO2/2)x2(MeThiSiO2/2)x3(PhSiO3/2)x4
(Me3SiO1/2)x1(Me2SiO2/2)x2(MeThiSiO2/2)x3(MeSiO3/2)x4
(Me3SiO1/2)x1(MeThiSiO2/2)x2(PhSiO3/2)x3
(Me3SiO1/2)x1(MeThiSiO2/2)x2(MeSiO3/2)x3(PhSiO3/2)x4
(Me3SiO1/2)x1(Me2SiO2/2)x2(MeThiSiO2/2)x3
(Me3SiO1/2)x1(Me2SiO2/2)x2(MePhSiO2/2)x3(MeThiSiO2/2)x4
(Me3SiO1/2)x1(MePhSiO2/2)x2(MeThiSiO2/2)x3
(Me3SiO1/2)x1(Ph2SiO2/2)x2(MeThiSiO2/2)x3
(Me2SiO2/2)x1(MeThiSiO2/2)x2(PhSiO3/2)x3
(Me2SiO2/2)x1(ThiSiO3/2)x2
(Me3SiO1/2)x1(Me2SiO2/2)x2(ThiSiO3/2)x3(MeSiO3/2)x4
(Me3SiO1/2)x1(Me2SiO2/2)x2(ThiSiO3/2)x3(PhSiO3/2)x4
(Me3SiO1/2)x1(ThiSiO3/2)x2(MeSiO3/2)x3
(Me3SiO1/2)x1(ThiSiO3/2)x2(PhSiO3/2)x3
(Me2ViSiO1/2)x1(ThiSiO3/2)x2(PhSiO3/2)x3
(Me3SiO1/2)x1(ThiSiO3/2)x2
(Me2ViSiO1/2)x1(ThiSiO3/2)x2
(Me3SiO1/2)x1(Me2SiO2/2)x2(MeThiSiO2/2)x3(SiO4/2)x4
(Me3SiO1/2)x1(MeThiSiO2/2)x2(SiO4/2)x3
(Me3SiO1/2)x1(Me2SiO2/2)x2(ThiSiO3/2)x3(SiO4/2)x4
YcR2 dSiO(4-c-d)/2
で表されるオルガノポリシロキサンである。
(Me3SiO1/2)y1(Me2SiO2/2)y2(MeAcSiO2/2)y3(PhSiO3/2)y4
(Me2ViSiO1/2)y1(Me2SiO2/2)y2(MeAcSiO2/2)y3(PhSiO3/2)y4
(Me3SiO1/2)y1(Me2SiO2/2)y2(MeAcSiO2/2)y3(MeSiO3/2)y4
(Me3SiO1/2)y1(MeAcSiO2/2)y2(PhSiO3/2)y3
(Me3SiO1/2)y1(MeAcSiO2/2)y2(MeSiO3/2)y3(PhSiO3/2)y4
(Me3SiO1/2)y1(Me2SiO2/2)y2(MeAcSiO2/2)y3
(Me3SiO1/2)y1(Me2SiO2/2)y2(MePhSiO2/2)y3(MeAcSiO2/2)y4
(Me3SiO1/2)y1(MePhSiO2/2)y2(MeAcSiO2/2)y3
(Me3SiO1/2)y1(Ph2SiO2/2)y2(MeAcSiO2/2)y3
(Me2SiO2/2)y1(MeAcSiO2/2)y2(PhSiO3/2)y3
(MeAcSiO2/2)y1(PhSiO3/2)y2
(Me2SiO2/2)y1(AcSiO3/2)y2
(Me3SiO1/2)y1(Me2SiO2/2)y2(AcSiO3/2)y3(MeSiO3/2)y4
(Me3SiO1/2)y1(Me2SiO2/2)y2(AcSiO3/2)y3(PhSiO3/2)y4
(Me3SiO1/2)y1(AcSiO3/2)y2(MeSiO3/2)y3
(Me3SiO1/2)y1(AcSiO3/2)y2(PhSiO3/2)y3
(Me2ViSiO1/2)y1(AcSiO3/2)y2(PhSiO3/2)y3
(Me3SiO1/2)y1(AcSiO3/2)y2
(Me2ViSiO1/2)y1(AcSiO3/2)y2
(Me3SiO1/2)y1(Me2SiO2/2)y2(MeAcSiO2/2)y3(SiO4/2)y4
(Me3SiO1/2)y1(MeAcSiO2/2)y2(SiO4/2)y3
(Me3SiO1/2)y1(Me2SiO2/2)y2(AcSiO3/2)y3(SiO4/2)y4
芝浦システム株式会社製回転粘度計VG-DAを使用して、25℃における粘度を測定した。
RI検出器を用いたゲルパーミエーションクロマトグラフィーにより、標準ポリスチレン換算の重量平均分子量を求めた。
核磁気共鳴スペクトル分析により同定した構造から、オルガノポリシロキサンのメルカプト当量(g/mol)、アクリロキシ当量(g/mol)、またはエポキシ当量(g/mol)を求めた。
メルカプト基含有オルガノポリシロキサンの調製
撹拌装置、温度計、還流管、滴下漏斗を取り付けた反応器に、3-メルカプトプロピルトリメトキシシラン 1,374g、ジメチルジメトキシシラン 1,680g、およびトリフルオロメタンスルホン酸 1.18gを仕込み攪拌した後、イオン交換水 882gを室温で滴下した。メタノール還流下で1時間攪拌した後、炭酸カルシウム、シクロヘキサンを加え、生成したメタノールおよび未反応の水を共沸脱水により除去した。残った低沸分を減圧下で留去した後、固形分をろ過し、粘度560mPa・sの無色透明な液体を得た。この液体は、重量平均分子量=4,000、メルカプト当量=260g/molであり、13C-核磁気共鳴スペクトル分析により、平均単位式:
(Me2SiO2/2)0.65(ThiSiO3/2)0.35
平均組成式:
Thi0.35Me1.30SiO1.18
で表されるメルカプト基含有オルガノポリシロキサンであることが確認された。
撹拌装置、温度計、還流管、滴下漏斗を取り付けた反応器に、フェニルトキメトキシシラン 871g、環状ジメチルシロキサン 267g、3-アクリロキシプロピルトリメトキシシラン 1,406g、25℃における動粘度が2mm2/sの分子鎖両末端トリメチルシロキシ基封鎖ジメチルポリシロキサン 461g、トルエン 471g、2,6-ジ-tert-ブチル-p-クレゾール 1.7gおよびトリフルオロメタンスルホン酸 1.7gを仕込み攪拌した後、イオン交換水 337gを室温で滴下した。メタノール還流下で1時間攪拌した後、生成したメタノールおよび未反応の水を共沸脱水により除去した。さらに11規定の水酸化カリウム水溶液 0.37gを加え、共沸脱水を続けた。トルエン還流下で4時間攪拌後、冷却し、酢酸 0.5gを加えた。固形分をろ過した後、残った低沸分を減圧下で留去し、粘度5,860mPa・sの無色透明な液体を得た。この液体は、重量平均分子量=42,000、アクリロキシ当量=370g/molであり、13C-核磁気共鳴スペクトル分析により、平均単位式:
(Me3SiO1/2)0.12(Me2SiO2/2)0.36(AcSiO3/2)0.30(PhSiO3/2)0.22
平均組成式:
Ac0.30Me1.08Ph0.22SiO0.94
で表されるオルガノポリシロキサンであることが確認された。
下記の成分を用いて、表1および表2に示す組成で無溶剤型の硬化性オルガノポリシロキサン組成物を調製した。なお、硬化性オルガノポリシロキサン組成物において、(A)成分中のメルカプト基1モルに対して、(B)成分中の官能基を1モルとなる量に調整した。
(a-1):合成例1で調製したメルカプト基含有オルガノポリシロキサン
(b-1):多官能アクリレート(日本化薬株式会社製、KAYARAD TMPTA)
(b-2):ネオペンチルグリコールジグリシジルエーテル(東京化成工業株式会社製)
(b-3):合成例2で調製したアクリロキシ基含有オルガノポリシロキサン
(b-4):4-ヒドロキシブチルアクリレートグリシジルエーテル(日本化成株式会社製、4HBAGE)
(c-1):2,6,10-トリメチル-2,6,10-トリアザウンデカン
(c-2):2,4,6-トリス(ジメチルアミノメチル)フェノール
(c-3):2,6-ジメチル-2,6-ジアザヘプタン
(c-4):1,8-ジアザビシクロ[5,4,0]ウンデセンのトルエン溶液(有効成分1質量%)
(c-5):ジブチルチンジラウレート(日東化成株式会社製、ネオスタンU-100)
硬化性オルガノポリシロキサン組成物を調製後、その外観を目視により観察した。
硬化性オルガノポリシロキサン組成物をガラス瓶内またはアルミ皿上で25℃に保持し、流動性を失うか、または組成物が指に付かなくなるまでの時間(ゲル化時間)を求め、次のように硬化性を評価した。
☆☆:25℃でのゲル化時間が8時間以内
☆:25℃でのゲル化時間が8時間を超え、24時間以内
△:25℃でのゲル化時間が24時間を超え、48時間以内
×:25℃、48時間でも未硬化
25℃で24時間以内に硬化した組成物について、-2℃における硬化性を次のようにして評価した。
☆☆:-2℃でのゲル化時間が8時間以内
☆:-2℃でのゲル化時間が8時間を超え、24時間以内
△:-2℃でのゲル化時間が24時間を超え、48時間以内
×:-2℃、48時間でも未硬化
上記の成分および下記の成分を用いて、表3に示す組成で溶剤型の硬化性オルガノポリシロキサン組成物を調製した。なお、硬化性オルガノポリシロキサン組成物において、(A)成分中のメルカプト基1モルに対する、(B)成分中の官能基は1モルとなる量に固定した。
(d-1):酢酸エチル(和光純薬工業株式会社製)
硬化性オルガノポリシロキサン組成物の硬化性を上記と同様に評価した。
硬化性オルガノポリシロキサン組成物をガラス板に流し塗りで塗布し、室温で1日乾燥・硬化させた後、さらに70℃で2時間乾燥・硬化した。ガラス板上の硬化皮膜の密着性を碁盤目試験(JIS K5400)により評価した。評価の結果、硬化皮膜の剥がれがない場合を“○”、硬化皮膜の剥がれがある場合を“×”で示した。
Claims (6)
- (A)平均組成式:
XaR1 bSiO(4-a-b)/2
(式中、Xはメルカプトアルキル基およびメルカプトアリール基からなる群より選択される少なくとも1種のメルカプト基であり、R1は水素原子、炭素数1~12のアルキル基、炭素数2~12のアルケニル基、炭素数6~20のアリール基、炭素数7~20のアラルキル基、水酸基、または炭素数1~6のアルコキシ基であり、但し、一分子中、少なくとも2個のXを有し、aおよびbは、0<a<1、0<b<3、0.8<a+b<3を満たす数である。)
で表されるメルカプト基含有オルガノポリシロキサン、
(B)アクリロイル基、メタクリロイル基、およびエポキシ基からなる群から選択される少なくとも1種の官能基を一分子中に少なくとも2個有する化合物であって、
(B1)平均組成式:
YcR2 dSiO(4-c-d)/2
(式中、Yはアクリロキシアルキル基およびメタクリロキシアルキル基からなる群から選択される少なくとも1種の基であり、R2は水素原子、炭素数1~12のアルキル基、炭素数2~12のアルケニル基、炭素数6~20のアリール基、炭素数7~20のアラルキル基、水酸基、または炭素数1~6のアルコキシ基であり、但し、一分子中、少なくとも2個のYを有し、cおよびdは、0<c<1、0<d<3、0.8<c+d<3を満たす数である。)
で表されるオルガノポリシロキサン、
(B2)アクリロイル基およびメタクリロイル基からなる群から選択される少なくとも1種の基を一分子中に少なくとも2個有する非シロキサン化合物、
(B3)エポキシ基を一分子中に少なくとも2個有する非シロキサン化合物、および
(B4)一分子中に、アクリロイル基およびメタクリロイル基からなる群から選択される少なくとも1種の基、およびエポキシ基を有する化合物
からなる群より選択される少なくとも1種の化合物{(A)成分中のメルカプト基1モルに対して、(B)成分中の官能基が0.3~3モルとなる量}、および
(C)N-H結合を有さないアミン化合物および/またはP-H結合を有さないホスフィン化合物{(A)成分~(C)成分の合計量に対して、0.01~10質量%となる量}
から少なくともなる硬化性オルガノポリシロキサン組成物。 - (C)成分が三級アミン化合物である、請求項1に記載の硬化性オルガノポリシロキサン組成物。
- さらに、(D)有機溶剤を、(A)成分~(C)の合計100質量部に対して0~3,000質量部含有する、請求項1または2に記載の硬化性オルガノポリシロキサン組成物。
- コーティング組成物である、請求項1乃至3のいずれか1項に記載の硬化性オルガノポリシロキサン組成物。
- 請求項1乃至3のいずれか1項に記載の硬化性オルガノポリシロキサン組成物を硬化させてなる硬化物。
- 被塗物に請求項4に記載の硬化性オルガノポリシロキサン組成物を塗布し、-5~30℃で硬化させることを特徴とする、硬化皮膜の形成方法。
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US15/545,379 US20180009985A1 (en) | 2015-01-22 | 2016-01-12 | Curable organopolysiloxane composition, cured product thereof, and method of forming cured film |
KR1020177019644A KR20170106330A (ko) | 2015-01-22 | 2016-01-12 | 경화성 오가노폴리실록산 조성물, 그의 경화물, 및 경화 피막의 형성 방법 |
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CN201680005930.3A CN107109068A (zh) | 2015-01-22 | 2016-01-12 | 可固化的有机聚硅氧烷组合物、其固化产物、以及形成固化膜的方法 |
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US (1) | US20180009985A1 (ja) |
EP (1) | EP3249016A4 (ja) |
JP (1) | JPWO2016117292A1 (ja) |
KR (1) | KR20170106330A (ja) |
CN (1) | CN107109068A (ja) |
WO (1) | WO2016117292A1 (ja) |
Cited By (2)
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WO2018066379A1 (ja) * | 2016-10-03 | 2018-04-12 | 東レ・ダウコーニング株式会社 | 光硬化性液状シリコーン組成物およびその硬化物 |
WO2023167014A1 (ja) * | 2022-03-01 | 2023-09-07 | ナミックス株式会社 | 樹脂組成物、接着剤、封止材、硬化物、半導体装置及び電子部品 |
Families Citing this family (2)
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JP2021138928A (ja) * | 2020-03-06 | 2021-09-16 | 日産化学株式会社 | 側鎖にアルコキシシリル基とメルカプト基を有するポリマー型シランカップリング剤を含むコーティング組成物 |
CN111607098B (zh) * | 2020-05-22 | 2022-02-22 | 东莞德芳油墨科技有限公司 | 一种用于玻璃基材的多组分uv-led光固化丝网油墨及其制备方法 |
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WO2018066379A1 (ja) * | 2016-10-03 | 2018-04-12 | 東レ・ダウコーニング株式会社 | 光硬化性液状シリコーン組成物およびその硬化物 |
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Also Published As
Publication number | Publication date |
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EP3249016A1 (en) | 2017-11-29 |
CN107109068A (zh) | 2017-08-29 |
JPWO2016117292A1 (ja) | 2017-11-02 |
US20180009985A1 (en) | 2018-01-11 |
KR20170106330A (ko) | 2017-09-20 |
EP3249016A4 (en) | 2018-06-20 |
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