WO2011111430A1 - 車両用部材及びその製造方法 - Google Patents
車両用部材及びその製造方法 Download PDFInfo
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- WO2011111430A1 WO2011111430A1 PCT/JP2011/051467 JP2011051467W WO2011111430A1 WO 2011111430 A1 WO2011111430 A1 WO 2011111430A1 JP 2011051467 W JP2011051467 W JP 2011051467W WO 2011111430 A1 WO2011111430 A1 WO 2011111430A1
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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
- C09D4/00—Coating compositions, e.g. paints, varnishes or lacquers, based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; Coating compositions, based on monomers of macromolecular compounds of groups C09D183/00 - C09D183/16
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
- B32B27/308—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising acrylic (co)polymers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/16—Layered products comprising a layer of synthetic resin specially treated, e.g. irradiated
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- 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
- C08F220/20—Esters of polyhydric alcohols or phenols, e.g. 2-hydroxyethyl (meth)acrylate or glycerol mono-(meth)acrylate
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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
- 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
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- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F290/00—Macromolecular compounds obtained by polymerising monomers on to polymers modified by introduction of aliphatic unsaturated end or side groups
- C08F290/08—Macromolecular compounds obtained by polymerising monomers on to polymers modified by introduction of aliphatic unsaturated end or side groups on to polymers modified by introduction of unsaturated side groups
- C08F290/12—Polymers provided for in subclasses C08C or C08F
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- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F299/00—Macromolecular compounds obtained by interreacting polymers involving only carbon-to-carbon unsaturated bond reactions, in the absence of non-macromolecular monomers
- C08F299/02—Macromolecular compounds obtained by interreacting polymers involving only carbon-to-carbon unsaturated bond reactions, in the absence of non-macromolecular monomers from unsaturated polycondensates
- C08F299/06—Macromolecular compounds obtained by interreacting polymers involving only carbon-to-carbon unsaturated bond reactions, in the absence of non-macromolecular monomers from unsaturated polycondensates from polyurethanes
- C08F299/065—Macromolecular compounds obtained by interreacting polymers involving only carbon-to-carbon unsaturated bond reactions, in the absence of non-macromolecular monomers from unsaturated polycondensates from polyurethanes from polyurethanes with side or terminal unsaturations
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/0427—Coating with only one layer of a composition containing a polymer binder
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/043—Improving the adhesiveness of the coatings per se, e.g. forming primers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/046—Forming abrasion-resistant coatings; Forming surface-hardening coatings
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/08—Heat treatment
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2305/00—Condition, form or state of the layers or laminate
- B32B2305/72—Cured, e.g. vulcanised, cross-linked
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/554—Wear resistance
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/714—Inert, i.e. inert to chemical degradation, corrosion
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2605/00—Vehicles
- B32B2605/006—Transparent parts other than made from inorganic glass, e.g. polycarbonate glazings
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2369/00—Characterised by the use of polycarbonates; Derivatives of polycarbonates
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2433/00—Characterised by the use of homopolymers or 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 of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers
Definitions
- the present invention relates to a vehicle member and a manufacturing method thereof.
- a glass plate is arranged as a window material in the window opening of a vehicle such as an automobile.
- a transparent resin plate instead of a glass plate as a window material.
- an aromatic polycarbonate-based transparent resin plate is a promising material as a window material for vehicles because it is excellent in fracture resistance, transparency, lightness, easy processability, and the like.
- the vehicle window material Since the vehicle is exposed outdoors, weather resistance is required for the vehicle window material. Further, as represented by washing the vehicle, various external forces such as rubbing are applied to the surface of the vehicle window material. For this reason, the vehicle window material is required to have high wear resistance. Since the transparent resin plate has a lower surface hardness than the glass plate, the transparency is easily lost due to damage or abrasion. For this reason, there was a limit in using a transparent resin board as a window material for vehicles.
- Patent Documents 1 to 4 A coating agent for forming a hard coat layer having excellent weather resistance has also been proposed (Patent Documents 5 and 6).
- an object of the present invention is to provide a vehicle member having sufficiently excellent weather resistance and wear resistance.
- the vehicle member according to the present invention includes a molded body and a protective film provided on the surface of the molded body and formed by curing the active energy ray-curable composition.
- the active energy ray curable composition is an active energy ray curable prepolymer obtainable by a reaction between an acrylic prepolymer having a hydroxyl group and an acrylic monomer (a4) having an isocyanate group and a (meth) acryloyl group.
- the acrylic prepolymer having a hydroxyl group includes an acrylic monomer (a1) having a piperidinyl group and a (meth) acryloyl group, an acrylic monomer (a2) having a hydroxyl group and a (meth) acryloyl group, and other monomers (a3). Is a copolymer containing as a monomer unit.
- the vehicle member according to the present invention has sufficiently excellent weather resistance and wear resistance.
- the number average molecular weight of the active energy ray-curable prepolymer (A) is preferably 3000 to 100,000.
- the (meth) acryloyl group equivalent of the active energy ray-curable prepolymer (A) is preferably 250 to 1600.
- the acrylic monomer (a3) preferably contains a compound having a functional group containing a fluorine atom.
- This functional group is preferably a perfluoroalkyl group.
- the active energy ray-curable compound (C) preferably includes a compound (C1) having a (meth) acryloyl group and a group represented by — (CH 2 ) 5 —.
- the compound (C1) is preferably a compound represented by the following general formula (1).
- the active energy ray-curable compound (C) preferably further includes a compound (C2) having a (meth) acryloyl group and not having a group represented by — (CH 2 ) 5 —.
- the compound (C2) is preferably a urethane compound having an average of 2 to 15 (meth) acryloyl groups and a urethane group.
- the number average molecular weight of the compound (C2) is preferably 500 to 10,000.
- the active energy ray-curable compound (C) preferably further contains a silicone oil (C3) having a (meth) acryloyl group.
- the inorganic oxide particles (D) are preferably SiO 2 particles.
- the proportion of component (A) is 1 to 50% by mass, the proportion of component (B) is 1 to 20% by mass, (C) The proportion of the components is preferably 30 to 95% by mass.
- the proportion of component (A) is 1 to 50 mass%, the proportion of component (B) is 1 to 20 mass%, (C1) It is preferable that the proportion of the component is 5 to 60% by mass, the proportion of the (C2) component is 20 to 80% by mass, and the proportion of the (C3) component is 0.01 to 2% by mass.
- the amount of the inorganic oxide particles (D) is preferably 0.1 to 20 parts by weight with respect to 100 parts by weight of the total amount of the components (A), (B) and (C).
- the present invention relates to a method for manufacturing the above vehicle member.
- the production method according to the present invention includes a step of forming a film of the active energy ray-curable composition on the surface of a molded body, and the formed film is cured by irradiation with active energy rays to form a cured film. Forming.
- a vehicle member having sufficiently excellent weather resistance and wear resistance can be obtained.
- a vehicle member having sufficiently excellent weather resistance and wear resistance is provided.
- (meth) acryloyl group means acryloyl group or methacryloyl group
- (meth) acryloyloxy means acryloyloxy or methacryloyloxy
- the active energy ray-curable composition includes an active energy ray-curable prepolymer (A), an active energy ray-curable compound (B) having a benzotriazole group, a component (A), and (B). It contains other active energy ray-curable compound (C) different from the component and inorganic oxide particles (D). Details of each component will be described below.
- the prepolymer (A) can be obtained by a reaction between an acrylic prepolymer having a hydroxyl group and an acrylic monomer (a4) having an isocyanate group and a (meth) acryloyl group.
- a prepolymer (A) is produced by a reaction between the hydroxyl group of the acrylic polymer and the isocyanate group of the acrylic monomer (a4).
- the acrylic prepolymer used for obtaining the prepolymer (A) includes an acrylic monomer (a1) having a piperidinyl group and a (meth) acryloyl group, and an acrylic monomer having a hydroxyl group and a (meth) acryloyl group (a2 ) As a monomer unit.
- the prepolymer (A) has a piperidinyl group derived from the acrylic monomer (a1) and a (meth) acryloyl group derived from the acrylic monomer (a4). Due to the action of the piperidinyl group introduced into the prepolymer (A), specifically excellent weather resistance is imparted to the formed cured film. When the cured film is exposed to ultraviolet rays, the chemical bonds of the polymer chains constituting the cured film are broken to generate radicals. The generated radicals promote the breaking of chemical bonds in the cured film. The piperidinyl group introduced into the prepolymer (A) reacts with the radical to inactivate it, and is considered to suppress the progress of chemical bond breakage in the cured film.
- Acrylic monomers (a1) include, for example, 4- (meth) acryloyloxy-2,2,6,6-tetramethylpiperidine and 4- (meth) acryloyloxy-1,2,2,6,6-pentamethylpiperidine At least one compound selected from the group consisting of
- the acrylic monomer (a2) introduces a hydroxyl group that functions as a reaction point with the acrylic monomer (a4) into the acrylic prepolymer.
- the acrylic monomer (a2) include hydroxyethyl (meth) acrylate, hydroxypropyl (meth) acrylate, hydroxybutyl (meth) acrylate, cyclohexanedimethanol mono (meth) acrylate, 2,3-dihydroxypropyl (meth) acrylate ( Hydroxy group bifunctional), 2-hydroxy-3-phenoxypropyl (meth) acrylate, N-methylol (meth) acrylamide, hydroxystyrene, hydroquinone mono (meth) acrylate, hydroxyalkyl vinyl ether, and ethylene oxide modified (EO modified) ), Monofunctional (meth) acrylates such as propylene oxide modified (PO modified) or caprolactone modified (CL modified) compounds, and 3- (meth) acryloyloxy From the group consisting of polyfunctional (
- the acrylic prepolymer used for obtaining the prepolymer (A) is different from the acrylic monomer (a1) and the acrylic monomer (a2), and is another monomer having a radical polymerizable functional group such as a meth (acryloyl) group. (A3) may further be included as a monomer unit.
- Monomer (a3) is, for example, methyl (meth) acrylate, ethyl (meth) acrylate, butyl (meth) acrylate, hexyl (meth) acrylate, 2-ethylhexyl (meth) acrylate, lauryl (meth) acrylate, stearyl (meth) Acrylate, cyclohexyl (meth) acrylate, benzyl (meth) acrylate, isobornyl (meth) acrylate, dicyclopentanyl (meth) acrylate, 2-methoxyethyl (meth) acrylate, polyethylene glycol alkyl ether (meth) acrylate, polypropylene glycol alkyl Ether (meth) acrylate, tetrahydrofurfuryl (meth) acrylate, phenoxyethyl (meth) acrylate, N, N-dimethylaminoethyl (meth)
- the monomer (a3) preferably contains a compound having a functional group containing a fluorine atom.
- the weather resistance of a cured film can further be improved.
- the functional group containing fluorine atoms introduced into the prepolymer (A) is likely to be collected and distributed on the surface of the film and in the vicinity thereof, so that the prepolymer (A)
- the piperidinyl group possessed by ⁇ tends to be concentrated on the surface of the film and its vicinity. As a result, deterioration inside the cured film is prevented more effectively.
- the functional group containing a fluorine atom can be, for example, a fluorine-substituted alkyl group, an aryl group, or an aralkyl group.
- Specific examples of such functional groups include 2,2,2-trifluoroethyl group, 2,2,3,3,3-pentafluoropropyl group, 3,3,4,4,5,5,6,6. , 7, 7, 8, 8, 9, 9, 10, 10, 10-heptadecafluorodecyl group and pentafluorophenyl group.
- Examples of the compound having a functional group containing a fluorine atom used as the monomer (a3) include 2,2,2-trifluoroethyl (meth) acrylate, 2,2,3,3,3-pentafluoropropyl ( (Meth) acrylate, 2- (perfluorobutyl) ethyl (meth) acrylate, 3- (perfluorobutyl) -2-hydroxypropyl (meth) acrylate, 2- (perfluorohexyl) ethyl (meth) acrylate, 3- ( Perfluorohexyl) -2-hydroxypropyl (meth) acrylate, 2- (perfluorooctyl) ethyl (meth) acrylate, 3- (perfluorooctyl) -2-hydroxypropyl (meth) acrylate, 2- (perfluorodecyl) ) Ethyl (meth) acrylate, 2- (perfluoro-3 Meth
- the acrylic prepolymer having a hydroxyl group can be obtained, for example, by a radical copolymerization method of the acrylic monomer (a1), the acrylic monomer (a2), and the monomer (a3).
- the proportion of the acrylic monomer (a1) is 10 to 80% by mass and the proportion of the acrylic monomer (a2) is 10 to 80% by mass based on the total amount of the monomers (a1), (a2) and (a3). %,
- the proportion of the monomer (a3) is preferably 0.1 to 20% by mass, the proportion of the acrylic monomer (a1) is 20 to 70% by mass, the proportion of the acrylic monomer (a2) is 20 to 70% by mass,
- the proportion of monomer (a3) is more preferably 1 to 15% by mass.
- the copolymerization ratio of the acrylic monomer (a1) exceeds 80% by mass, the proportion of the acrylic monomer (a2) having a hydroxyl group is relatively reduced. As a result, the hydroxyl group to be reacted with the acrylic monomer (a4) having an isocyanate group to obtain the prepolymer (A) is reduced, and the (meth) acryloyl group equivalent of the prepolymer (A) is increased. When the (meth) acryloyl group equivalent of the prepolymer (A) increases, the effect of improving the wear resistance of the cured film tends to decrease.
- the copolymerization ratio of the acrylic monomer (a1) is less than 10% by mass, the amount of piperidinyl groups in the prepolymer (A) is reduced, and the pre-requisite which is required for exhibiting excellent weather resistance. There exists a tendency for the quantity of a polymer (A) to increase.
- the copolymerization ratio of the acrylic monomer (a2) exceeds 80% by mass, the copolymerization ratio of the acrylic monomer (a1) having a piperidinyl group is relatively small, and the effect of improving weather resistance tends to be small.
- the copolymerization ratio of the acrylic monomer (a2) is less than 10% by mass, the (meth) acryloyl group equivalent of the prepolymer (A) is increased, and the effect of improving the abrasion resistance of the cured film tends to be reduced. is there.
- Radical copolymerization is performed in a reaction solution containing each monomer and a polymerization initiator.
- the polymerization initiator is appropriately selected according to solubility in the monomer, polymerization temperature, target molecular weight, and the like.
- examples of the polymerization initiator include 2,2′-azobis (isobutyronitrile), 2,2′-azobis (4-methoxy-2,4-dimethylvaleronitrile), 2,2′-azobis (2, 4-dimethylvaleronitrile), 2,2-azobis (2-methylpropionic acid) dimethyl, 2,2'-azobis (2-methylbutyronitrile), 1,1'-azobis (cyclohexane-1-carbonitrile) 2,2′-azobis [N- (2-propenyl) -2-methylpropionamide], 1-[(1-cyano-1-methylethyl) azo] formamide, 2,2′-azobis (N-butyl) -2-methylpropionamide), 2,2′-azobis (
- the amount of the polymerization initiator is preferably 0.1 to 10 parts by weight with respect to 100 parts by weight of the total amount of the acrylic monomer (a1), acrylic monomer (a2) and monomer (a3).
- the amount of the polymerization initiator is less than 0.1 parts by weight, the molecular weight of the prepolymer (A) increases, and the viscosity of the composition containing the prepolymer (A) increases. If it does so, when using a composition as a coating material, there exists a possibility that the suitability for coating may fall.
- the amount of the polymerization initiator is more than 10 parts by weight, the molecular weight of the resulting acrylic prepolymer is reduced, and the proportion of the component having no hydroxyl group is increased in the product of the copolymerization reaction.
- a component having no (meth) acryloyl group is likely to be mixed into the reaction product of the prepolymer (A) and the acrylic monomer (a4). If it does so, the sclerosis
- the radical copolymerization may be performed without a solvent or in a solvent.
- Solvents that can be used are, for example, toluene, xylene, acetone, methyl ethyl ketone, methyl isobutyl ketone, cyclohexanone, isophorone, methyl acetate, ethyl acetate, propyl acetate, isopropyl acetate, butyl acetate, isobutyl acetate, cyclohexyl acetate, tetrahydrofuran, 1,4- Examples include dioxane, propylene glycol monomethyl ether acetate, diethylene glycol monoethyl ether acetate, methanol, ethanol, 1-propanol, 2-propanol, butanol, and diacetone alcohol.
- the temperature at the time of radical copolymerization may be limited by the boiling point of the solvent or the combination of initiators, but is usually 40 to 150 ° C, preferably 60 to 100 ° C.
- the hydroxyl value of the acrylic prepolymer used for obtaining the prepolymer (A) is preferably 30 to 300 (mgKOH / g), more preferably 70 to 270 (mgKOH / g).
- this hydroxyl value is small, (meth) acryloyl groups introduced into the prepolymer (A) are reduced. That is, the (meth) acryloyl group equivalent of the prepolymer (A) is increased. Then, the effect of improving the wear resistance of the formed cured film tends to be not small.
- the hydroxyl value of the acrylic prepolymer is large, the copolymerization ratio of the acrylic monomer (a1) having a piperidinyl group decreases, and the effect of improving weather resistance tends to be small.
- the acrylic monomer (a4) to be reacted with the acrylic prepolymer having a hydroxyl group includes, for example, 2- (meth) acryloyloxyethyl isocyanate and 2- (2- (meth) acryloyloxyethyl).
- the reaction conditions between the acrylic prepolymer and the acrylic monomer (a4) are appropriately adjusted according to the combination of the compounds.
- the reaction temperature is preferably 20 to 110 ° C., more preferably 50 to 100 ° C. so that the double bonds that each has does not react.
- a polymerization inhibitor may be added during the reaction so that the double bond does not react.
- the polymerization inhibitor include hydroquinone (HQ), hydroquinone monomethyl ether (MEHQ), 2,6-di-t-butyl-4-methylphenol (BHT), t-butylcatechol (TBC, and 4-methoxy-).
- examples thereof include phenols such as 1-naphthol or naphthol derivatives, phenothiazine derivatives, and nitrosamine salts, and the same polymerization inhibition effect can be obtained by blowing oxygen or air into the reaction system. In that case, it is preferable to carry out the reaction while blowing oxygen or air while keeping the polymerization inhibitor in a small amount.
- the number average molecular weight of the prepolymer (A) is preferably from 3,000 to 100,000, more preferably from 5,000 to 50,000.
- the prepolymer (A) having a small number average molecular weight many components having no (meth) acryloyl group are easily mixed. If it does so, the sclerosis
- the number average molecular weight of the prepolymer (A) is excessively large, the viscosity of the composition becomes too high, and the coating suitability when the composition is used as a paint may be lowered.
- the acrylic prepolymer having a hydroxyl group which should be a precursor of the prepolymer (A) is often used.
- the number average molecular weight is also preferably 3000 to 100,000. In this specification, the number average molecular weight is a standard polystyrene equivalent value determined by GPC measurement.
- the functional group equivalent (piperidinyl group equivalent) of the piperidinyl group of the prepolymer (A) is preferably 200 to 7000, more preferably 300 to 4000. Further, the functional group equivalent ((meth) acryloyl group equivalent) of the (meth) acryloyl group of the prepolymer (A) is preferably 250 to 1600, more preferably 300 to 1000.
- the functional group equivalent here means the mass (g) of the prepolymer (A) per mole of each functional group.
- the active energy ray-curable compound (B) has a benzotriazole group and a (meth) acryloyl group.
- the benzotriazole group has a function of converting ultraviolet energy into thermal energy and suppressing the breakage of chemical bonds in the cured film.
- the benzotriazole group is a monovalent group represented by the following chemical formula, for example.
- Compound (B) is, for example, 2- (2′-hydroxy-5 ′-(methacryloyloxyethyl) phenyl) -2H-benzotriazole, 2- (2′-hydroxy-3′-t-butyl-5′- Methacryloxyethylphenyl) -2H-benzotriazole, 2- (2 ′-(meth) acryloyloxy-5′-methylphenyl) benzotriazole, 2- (2 ′-(meth) acryloyloxy-5′-t-octyl) Phenyl) benzotriazole and at least one selected from the group consisting of 2- (2 ′-(meth) acryloyloxy-3 ′, 5′-di-t-butylphenyl) benzotriazole.
- an active energy ray-curable compound (C1) having a group represented by — (CH 2 ) 5 — and a (meth) acryloyl group is used.
- the group represented by — (CH 2 ) 5 — is preferably introduced as a divalent group represented by the following chemical formula derived from caprolactone.
- the compound (C1) is preferably a compound represented by the general formula (1) already mentioned.
- R 1 represents a hydrogen atom or a methyl group, and a plurality of R 1 in the same molecule may be the same or different.
- n + m + 1 + o + p + q is less than 1, the coating film tends to be peeled off by a long-term weather resistance test.
- n, m, l, o, p, and q are preferably n + m + l + o + p + q is 6 or more.
- the compound represented by the general formula (1) can be obtained, for example, by a method of further adding (meth) acrylic acid to an adduct of dipentaerythritol and ⁇ -caprolactone.
- the curable composition according to this embodiment may further contain, as the compound (C), an active energy ray-curable compound (C2) that does not have a group represented by — (CH 2 ) 5 —.
- the compound (C2) is preferably an oligomer having a number average molecular weight of 500 to 10,000.
- the compound (C2) is preferably at least one oligomer selected from, for example, polyester (meth) acrylate, polyurethane (meth) acrylate, epoxy (meth) acrylate, and (meth) acrylated maleic acid-modified polybutadiene.
- polyurethane (meth) acrylate is particularly preferable.
- the average number of (meth) acryloyl groups per molecule of the oligomer is preferably 2 to 15, more preferably 4 to 12.
- the number of (meth) acryloyl groups is less than 2, the hardness of the cured film tends to decrease, and the scratch resistance tends to decrease.
- the number of (meth) acryloyl groups is more than 15, the shrinkage of the cured film is increased because the curing shrinkage is increased.
- the strain increases cracks and peeling of the cured film during the weather resistance test are likely to occur. When cracks and peeling occur, the appearance is greatly impaired.
- the curable composition according to the present embodiment may further contain a silicone oil (C3) having a (meth) acryloyl group as the compound (C).
- Silicone oil (C3) contributes to further improving the wear resistance of the cured film.
- Commercially available silicone oils (C3) include, for example, X-22-164, X-22-164AS, X-22-164A, X-22-164B, X-22-164C, X-22- 164E, X-22-174DX, X-22-2426, X-22-2475, and X-22-2458 (all manufactured by Shin-Etsu Chemical Co., Ltd.).
- the ratio of the component (A) is 1 to 50% by mass based on the total amount of the active energy ray-curable compounds (A), (B) and (C), (B ) Component ratio is preferably 1 to 20% by mass, and component (C) component is preferably 30 to 95% by mass.
- (A) component: (B) component: (C) component 2 to 45: 2 to 15:40 to 90 (mass%) is more preferable.
- the component (C) includes the compounds (C1), (C2) and (C3)
- the total amount of the active energy ray-curable compounds (A), (B) and (C) is used as a reference in the curable composition.
- the proportion of the component (A) is 1 to 50 mass%
- the proportion of the component (B) is 1 to 20 mass%
- the proportion of the component (C1) is 5 to 60 mass%
- the proportion of the component (C2) is 20 to 80 mass%.
- the curable composition according to this embodiment it is important from the viewpoint of increasing the hardness of the cured film and improving the wear resistance that it further contains inorganic oxide particles (D).
- the amount of the inorganic oxide particles (D) is preferably 0.1 to 20 parts by weight with respect to 100 parts by weight of the total amount of the active energy ray-curable compounds (A), (B) and (C). 0.5 to 15 parts by weight is more preferable.
- SiO 2 particles are preferable, and colloidal silica is more preferable.
- colloidal silica having a particle size of about 10 to 100 nm is used in an organic solvent such as MEK-ST, IPA-ST, PGM-ST (all of which are organosilica sols manufactured by Nissan Chemical Co., Ltd.) such as alcohol, ketone, and ester. Examples thereof include a dispersed colloidal solution.
- the active energy ray-curable composition according to this embodiment further contains a photopolymerization initiator (photo radical generator).
- the amount of the photopolymerization initiator is preferably 0.1 to 20 parts by weight, more preferably 1 to 1 part by weight based on 100 parts by weight of the total amount of the active energy ray-curable compounds (A), (B) and (C). 10 parts by weight.
- photopolymerization initiator examples include 2,2-dimethoxy-1,2-diphenylethane-1-one, 1-hydroxycyclohexyl phenyl ketone, 2-hydroxy-2-methyl-1-phenylpropane -1-one, 1- [4- (2-hydroxyethoxy) phenyl] -2-hydroxy-2-methyl-1-propan-1-one, 2-hydroxy-1- ⁇ 4- [4- (2- Hydroxy-2-methylpropionyl) benzyl] phenyl ⁇ -2-methylpropan-1-one, 2-methyl-1- (4-methylthiophenyl) -2-morpholinopropan-1-one, 2-benzyl-2- Dimethylamino-1- (4-morpholinophenyl) butan-1-one, 2- (dimethylamino) -2-[(4-methylphenyl) methyl] -1- [ -(Morpholinyl) phenyl] -1-butanone, 2,4,6-trimethylbenzo
- the addition of the photopolymerization initiator (photo radical generator) as described above is not necessarily required.
- the curable composition according to the present embodiment further includes, as additives, a thermoplastic resin, a thermosetting resin, a curing agent, a leveling agent, an antifoaming agent, a dye, a pigment, an antioxidant, a polymerization inhibitor, a humectant, It may contain a viscosity modifier, an antiseptic, an antibacterial agent, an antiblocking agent, an infrared absorber, an electromagnetic wave shielding agent, an antistatic agent, and the like.
- the curable composition may contain a solvent.
- FIG. 1 is a cross-sectional view showing an embodiment of a vehicle member provided with a cured film as a protective film.
- a vehicle member 10 shown in FIG. 1 includes a plate-shaped molded body 1 and a protective film (cured film) 5 provided on the surface of the molded body 1.
- the member 10 for vehicles is used especially suitably as a window material for vehicles.
- the film thickness of the cured film 5 is usually about 1 to 50 ⁇ m.
- the protective film 5 is formed in direct contact with the surface of the molded body 1. Although a primer layer may be provided between the protective film 5 and the molded body 1, the protective film 5 is excellent in adhesiveness with the molded body 1, and thus the primer layer is not necessarily required.
- the molded body 1 examples include glass, ceramic, polycarbonate, polyester, urethane, acrylic, polyacetate cellulose, polyamide, polyimide, polystyrene, epoxy resin, polyolefin, and various metals (stainless steel, etc.).
- the curable composition according to the present embodiment is used to coat the surface of a resin molded article that is inferior in weather resistance compared to glass or ceramic, weather resistance can be imparted and the resin is not in a glass substrate.
- the molded body 1 is a transparent resin molded body such as a polycarbonate resin molded body, it is particularly useful to use the vehicle member 1 as a window material instead of the glass base material.
- the molded body 1 has a flat shape such as a film, a sheet, and a plate. However, the molded body to be protected may have a three-dimensional shape having a large height or thickness. As in the vehicle member 10 in FIG. 1, the protective film 5 may be formed only on one surface of the molded body 1, or the protective film may be formed on both surfaces of the molded body 1. The protective film may cover a part of the surface of the molded body or may cover the entire surface.
- the vehicle member 5 includes a step of forming a film of the active energy ray-curable composition according to the present embodiment on the surface of the molded body 1, and curing the formed film by irradiation with active energy rays. And a step of forming the protective film 5.
- membrane of a curable composition can be formed by apply
- the dropping tank was washed with 34.7 parts of cyclohexanone, and the washing solution was put into the reaction tank. After further reacting for 2 hours, a solution obtained by dissolving 2.5 parts of AIBN in 22.5 parts of cyclohexanone was divided into three equal parts and added in three portions every 30 minutes. One hour after the third addition, the reaction solution was cooled and taken out to obtain a cyclohexanone solution of an acrylic prepolymer having a hydroxyl group. The solid content was 39.56%. The hydroxyl value of the prepolymer was 185 (mgKOH / g).
- the active energy ray-curable prepolymer A1 had a number average molecular weight Mn of 10,000, a piperidinyl group equivalent: 842, and a (meth) acryloyl group equivalent: 430.
- the number average molecular weight Mn was determined in terms of polystyrene using GPC (gel permeation chromatograph).
- Example 1 Solution of active energy ray-curable prepolymer A1 obtained in Production Example 1 (including 10 parts by weight of solid content), RUVA 93: 10 parts by weight, DPCA 60: 40 parts by weight, UA1100H: 40 parts by weight, PGM-ST: 7. 5 parts by weight and Irgacure 184: 3 parts by weight were mixed to obtain an active energy ray-curable composition.
- the active energy ray-curable composition was applied to a commercially available polycarbonate plate (manufactured by Takiron Co., Ltd.) using a bar coater.
- the coating film was dried by heating at 120 ° C. for 3 minutes using a hot air drying oven. Thereafter, the coating film was quickly cured by UV irradiation using a UV irradiation apparatus under conditions of a peak illuminance of 750 mW / cm 2 and an integrated light quantity of 1000 mJ / cm 2 to obtain a cured film having a thickness of about 10 ⁇ m.
- the abrasion resistance and weather resistance of the cured film were evaluated by the methods described later. The evaluation results are shown in Table 2.
- Examples 2 to 8 (Comparative Examples 1 to 6)
- active energy ray-curable compositions and cured products were obtained and evaluated in the same manner.
- Abrasion resistance of the cured film was evaluated by a method according to ASTM D-1044. Specifically, using a Taber abrasion tester (manufactured by TABER), a wear test of 500 rotations with a 500 g load using two wear wheels (CS-10F) was performed, and the haze change ( ⁇ H) before and after the test was measured. , And measured using a haze meter (NDH2000 manufactured by Nippon Denshoku). The smaller the ⁇ H, the better the wear resistance.
- the vehicle member according to the present invention is excellent in weather resistance and wear resistance, it is useful as a window material for various vehicles such as automobiles.
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Abstract
Description
(1)C-H結合よりも結合が強い、すなわち結合エネルギーが大きいC-F結合が組込まれることにより、硬化膜中の化学結合が切断されにくくなる。
(2)組成物の膜が硬化する際、プレポリマー(A)に導入されたフッ素原子を含有する官能基が、膜の表面及びその近傍に集まって分布し易いことから、プレポリマー(A)が有するピペリジニル基も膜表面及びその近傍に集中して存在し易くなる。その結果、硬化膜内部の劣化がより効果的に防止される。
「LA87」:3-(2,2,6,6-テトラメチル-4-ピペリジニル)-2-メチル-1-プロペン-3-オン((株)ADEKA社製、アデカスタブLAシリーズ)
「FAMAC-4」:2-(パーフルオロブチル)エチルメタクリレート(ユニマテック(株)社製)
「MMA」:メチルメタクリレート
「4HBA」:4-ヒドロキシブチルアクリレート
「カレンズAOI」:(昭和電工(株)製、2-アクリロイルオキシエチルイソシアネート)
「RUVA93」:2-(2’-ヒドロキシ-5’-メタクリロイルオキシエチルフェニル)-2H-ベンゾトリアゾール(大塚化学(株)社製)
「DPCA60」:ジペンタエリスリトールとε-カプロラクトンとの付加物の(メタ)アクリレート化物(一般式(1)において、n+m+l+o+p+q=6である化合物)
「UA-1100H」:ウレタンオリゴマー(新中村化学(株)社製、Mn=764、官能基数=6)
「X-22-2458」:反応性変性シリコーンオイル(信越化学社製)
「PGM-ST」:コロイダルシリカ(日産化学(株)社製)
「イルガキュア184」:1-ヒドロキシシクロヘキシルフェニルケトン(チバ・ジャパン(株)製)
「AIBN」:2,2’-アゾビス(イソブチロニトリル)
「EHQ」:ヒドロキノンモノメチルエーテル(和光純薬製)
「DBTDL」:ジブチル錫ジラウリレート(和光純薬製)
攪拌機、温度計、還流冷却器、滴下装置及びガス導入管を備えた反応容器の反応槽に、シクロヘキサノン250部を仕込み、窒素ガスを吹き込みながら80℃で1時間攪拌した。滴下槽にモノマー(a1)としてLA87を100部、モノマー(a2)として4HBAを125部、モノマー(a3)としてMMA25部、AIBN7.5部、及びシクロヘキサノン80.9部を仕込み、滴下槽内を攪拌しながら2時間かけて反応槽に滴下した。滴下終了後、滴下槽をシクロヘキサノン34.7部で洗浄し、洗浄液を反応槽に入れた。さらに2時間反応させた後、AIBN2.5部をシクロヘキサノン22.5部に溶かした溶液を3等分し、30分おきに3回に分けて添加した。3回目の添加の1時間後に反応液を冷却して取り出し、水酸基を有するアクリル系プレポリマーのシクロヘキサノン溶液を得た。固形分は39.56%であった。プレポリマーの水酸基価は185(mgKOH/g)であった。
モノマー(a1)~(a4)の種類や量を表1に示すように変更した以外は製造例1と同様にして活性エネルギー線硬化性プレポリマーA2~A5の溶液を得た。
製造例1で得た活性エネルギー線硬化性プレポリマーA1の溶液(固形分10重量部を含む)、RUVA93:10重量部、DPCA60:40重量部、UA1100H:40重量部、PGM-ST:7.5重量部、及びイルガキュア184:3重量部を混合し、活性エネルギー線硬化性組成物を得た。
実施例1と同様にして表2~4に示す処方に従って、活性エネルギー線硬化性組成物及び硬化物を得、同様にして評価した。
ASTM D-1044に準じた方法により、硬化膜の耐摩耗性を評価した。具体的には、テーバー摩耗試験機(TABER社製)を用いて、摩耗輪(CS-10F)2輪使用、500g荷重にて500回転の磨耗試験を行い、試験前後のヘイズ変化(ΔH)を、ヘイズメーター(日本電色社製 NDH2000)を使用して測定した。ΔHが小さいものほど耐摩耗性が良好であると評価される。
JIS K5400に準じて、カーボンアーク式サンシャインウェザメーターにて5000時間の促進試験を行った。試験中に適宜硬化膜の状態を目視により観察し、割れおよび自然剥離が確認された時間をそれぞれ記録した。この時間が長いものほど、耐候性に優れる。硬化膜の耐候性を下記の基準により判定した。
AA:5000時間を超えても、割れと自然剥離のどちらも発生しなかった
A:割れおよび自然剥離の発生時間のうち短い方が、4000時間以上5000時間以下
B:割れおよび自然剥離の発生時間のうち短い方が、3000時間以上4000時間未満
C:割れおよび自然剥離の発生時間のうち短い方が、3000時間未満
Claims (17)
- 成形体と、該成形体の表面上に設けられ、活性エネルギー線硬化性組成物が硬化して形成される保護膜と、を備える車両用部材であって、
前記活性エネルギー線硬化性組成物が、
水酸基を有するアクリル系プレポリマーと、イソシアネート基と(メタ)アクリロイル基とを有するアクリルモノマー(a4)との反応により得ることのできる活性エネルギー線硬化性プレポリマー(A)、
ベンゾトリアゾール基と(メタ)アクリロイル基とを有する活性エネルギー線硬化性化合物(B)、
(メタ)アクリロイル基を有し、(A)成分及び(B)成分とは異なるその他の活性エネルギー線硬化性化合物(C)、並びに
無機酸化物粒子(D)、を含有し、
水酸基を有する前記アクリル系プレポリマーが、ピペリジニル基と(メタ)アクリロイル基とを有するアクリルモノマー(a1)、水酸基と(メタ)アクリロイル基とを有するアクリルモノマー(a2)、及びその他のモノマー(a3)をモノマー単位として含む共重合体である、車両用部材。 - 活性エネルギー線硬化性プレポリマー(A)の数平均分子量が3000~100000である、請求項1に記載の車両用部材。
- 活性エネルギー線硬化性プレポリマー(A)の(メタ)アクリロイル基当量が250~1600である、請求項1に記載の車両用部材。
- モノマー(a3)が、フッ素原子を含有する官能基を有する化合物を含む、請求項1に記載の車両用部材。
- フッ素原子を含有する前記官能基がパーフルオロアルキル基である、請求項4に記載の車両用部材。
- 活性エネルギー線硬化性化合物(C)が、(メタ)アクリロイル基と-(CH2)5-で表される基とを有する化合物(C1)を含む、請求項1に記載の車両用部材。
- n、m、l、o、p及びqがn+m+l+o+p+q=6~12を満たす整数である、請求項7に記載の車両用部材。
- 活性エネルギー線硬化性化合物(C)が、(メタ)アクリロイル基を有し-(CH2)5-で表される基を有しない化合物(C2)をさらに含む、請求項6に記載の車両用部材。
- (メタ)アクリロイル基を有し-(CH2)5-で表される基を有しない化合物(C2)が、平均で2~15個の(メタ)アクリロイル基と、ウレタン基とを有するウレタン化合物である、請求項9に記載の車両用部材。
- (メタ)アクリロイル基を有し-(CH2)5-で表される基を有しない化合物(C2)の数平均分子量が500~10000である、請求項9に記載の車両用部材。
- 活性エネルギー線硬化性化合物(C)が、(メタ)アクリロイル基を有するシリコーンオイル(C3)をさらに含む、請求項9に記載の車両用部材。
- 無機酸化物粒子(D)がSiO2粒子である、請求項1に記載の車両用部材。
- (A)成分、(B)成分及び(C)成分の合計量を基準として、(A)成分の割合が1~50質量%、(B)成分の割合が1~20質量%、(C)成分の割合が30~95質量%である、請求項1に記載の車両用部材。
- (A)成分、(B)成分及び(C)成分の合計量を基準として、(A)成分の割合が1~50質量%、(B)成分の割合が1~20質量%、(C1)成分の割合が5~60質量%、(C2)成分の割合が20~80質量%、(C3)成分の割合が0.01~2質量%である、請求項12に記載の車両用部材。
- (A)成分、(B)成分及び(C)成分の合計量100重量部に対して、無機酸化物粒子(D)の量が0.1~20重量部である、請求項1に記載の車両用部材。
- 前記成形体の表面上に、前記活性エネルギー線硬化性組成物の膜を形成する工程と、
形成された前記膜を、活性エネルギー線の照射により硬化して、保護膜を形成させる工程と、
を備える、請求項1~16のいずれか一項に記載の車両用部材の製造方法。
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| EP11753092A EP2546057A1 (en) | 2010-03-12 | 2011-01-26 | Vehicle member and manufacturing method therefor |
| US13/634,097 US8742011B2 (en) | 2010-03-12 | 2011-01-26 | Vehicle member and manufacturing method therefor |
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| CN103582659B (zh) | 2011-06-03 | 2015-11-25 | 住友橡胶工业株式会社 | 表面改性方法以及表面改性弹性体 |
| JP5641006B2 (ja) | 2011-08-31 | 2014-12-17 | ソニー株式会社 | 蓄電装置 |
| JP5763563B2 (ja) * | 2012-01-30 | 2015-08-12 | 住友ゴム工業株式会社 | 表面改質方法及び表面改質弾性体 |
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Also Published As
| Publication number | Publication date |
|---|---|
| KR101322212B1 (ko) | 2013-10-28 |
| US8742011B2 (en) | 2014-06-03 |
| KR20120120408A (ko) | 2012-11-01 |
| JP2011189562A (ja) | 2011-09-29 |
| US20130046053A1 (en) | 2013-02-21 |
| CN102791484B (zh) | 2014-11-12 |
| JP5418321B2 (ja) | 2014-02-19 |
| EP2546057A1 (en) | 2013-01-16 |
| CN102791484A (zh) | 2012-11-21 |
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