WO2015163274A1 - 活性エネルギー線硬化型樹脂組成物、樹脂成形品および樹脂成形品の製造方法 - Google Patents
活性エネルギー線硬化型樹脂組成物、樹脂成形品および樹脂成形品の製造方法 Download PDFInfo
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- WO2015163274A1 WO2015163274A1 PCT/JP2015/061960 JP2015061960W WO2015163274A1 WO 2015163274 A1 WO2015163274 A1 WO 2015163274A1 JP 2015061960 W JP2015061960 W JP 2015061960W WO 2015163274 A1 WO2015163274 A1 WO 2015163274A1
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- HNSOZVLPBHSSSA-UHFFFAOYSA-N bis(2,2,6,6-tetramethyl-1-nonoxypiperidin-4-yl) decanedioate Chemical compound C1C(C)(C)N(OCCCCCCCCC)C(C)(C)CC1OC(=O)CCCCCCCCC(=O)OC1CC(C)(C)N(OCCCCCCCCC)C(C)(C)C1 HNSOZVLPBHSSSA-UHFFFAOYSA-N 0.000 description 1
- OSIVCXJNIBEGCL-UHFFFAOYSA-N bis(2,2,6,6-tetramethyl-1-octoxypiperidin-4-yl) decanedioate Chemical compound C1C(C)(C)N(OCCCCCCCC)C(C)(C)CC1OC(=O)CCCCCCCCC(=O)OC1CC(C)(C)N(OCCCCCCCC)C(C)(C)C1 OSIVCXJNIBEGCL-UHFFFAOYSA-N 0.000 description 1
- MFAQLGRQGPQZRF-UHFFFAOYSA-N bis(2,2,6,6-tetramethyl-1-pentoxypiperidin-4-yl) decanedioate Chemical compound C1C(C)(C)N(OCCCCC)C(C)(C)CC1OC(=O)CCCCCCCCC(=O)OC1CC(C)(C)N(OCCCCC)C(C)(C)C1 MFAQLGRQGPQZRF-UHFFFAOYSA-N 0.000 description 1
- QDWVPFZIZUYYCC-UHFFFAOYSA-N bis(2,2,6,6-tetramethyl-1-propoxypiperidin-4-yl) decanedioate Chemical compound C1C(C)(C)N(OCCC)C(C)(C)CC1OC(=O)CCCCCCCCC(=O)OC1CC(C)(C)N(OCCC)C(C)(C)C1 QDWVPFZIZUYYCC-UHFFFAOYSA-N 0.000 description 1
- XITRBUPOXXBIJN-UHFFFAOYSA-N bis(2,2,6,6-tetramethylpiperidin-4-yl) decanedioate Chemical compound C1C(C)(C)NC(C)(C)CC1OC(=O)CCCCCCCCC(=O)OC1CC(C)(C)NC(C)(C)C1 XITRBUPOXXBIJN-UHFFFAOYSA-N 0.000 description 1
- MQDJYUACMFCOFT-UHFFFAOYSA-N bis[2-(1-hydroxycyclohexyl)phenyl]methanone Chemical compound C=1C=CC=C(C(=O)C=2C(=CC=CC=2)C2(O)CCCCC2)C=1C1(O)CCCCC1 MQDJYUACMFCOFT-UHFFFAOYSA-N 0.000 description 1
- DKPFZGUDAPQIHT-UHFFFAOYSA-N butyl acetate Chemical compound CCCCOC(C)=O DKPFZGUDAPQIHT-UHFFFAOYSA-N 0.000 description 1
- CWZPGMMKDANPKU-UHFFFAOYSA-L butyl-di(dodecanoyloxy)tin Chemical compound CCCC[Sn+2].CCCCCCCCCCCC([O-])=O.CCCCCCCCCCCC([O-])=O CWZPGMMKDANPKU-UHFFFAOYSA-L 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000007766 curtain coating Methods 0.000 description 1
- 150000005676 cyclic carbonates Chemical class 0.000 description 1
- 125000000113 cyclohexyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C1([H])[H] 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- QLVWOKQMDLQXNN-UHFFFAOYSA-N dibutyl carbonate Chemical compound CCCCOC(=O)OCCCC QLVWOKQMDLQXNN-UHFFFAOYSA-N 0.000 description 1
- FYIBPWZEZWVDQB-UHFFFAOYSA-N dicyclohexyl carbonate Chemical compound C1CCCCC1OC(=O)OC1CCCCC1 FYIBPWZEZWVDQB-UHFFFAOYSA-N 0.000 description 1
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- IEJIGPNLZYLLBP-UHFFFAOYSA-N dimethyl carbonate Chemical compound COC(=O)OC IEJIGPNLZYLLBP-UHFFFAOYSA-N 0.000 description 1
- 238000003618 dip coating Methods 0.000 description 1
- ROORDVPLFPIABK-UHFFFAOYSA-N diphenyl carbonate Chemical compound C=1C=CC=CC=1OC(=O)OC1=CC=CC=C1 ROORDVPLFPIABK-UHFFFAOYSA-N 0.000 description 1
- JMPVESVJOFYWTB-UHFFFAOYSA-N dipropan-2-yl carbonate Chemical compound CC(C)OC(=O)OC(C)C JMPVESVJOFYWTB-UHFFFAOYSA-N 0.000 description 1
- VUPKGFBOKBGHFZ-UHFFFAOYSA-N dipropyl carbonate Chemical compound CCCOC(=O)OCCC VUPKGFBOKBGHFZ-UHFFFAOYSA-N 0.000 description 1
- 125000001033 ether group Chemical group 0.000 description 1
- JBTWLSYIZRCDFO-UHFFFAOYSA-N ethyl methyl carbonate Chemical compound CCOC(=O)OC JBTWLSYIZRCDFO-UHFFFAOYSA-N 0.000 description 1
- QKLCQKPAECHXCQ-UHFFFAOYSA-N ethyl phenylglyoxylate Chemical compound CCOC(=O)C(=O)C1=CC=CC=C1 QKLCQKPAECHXCQ-UHFFFAOYSA-N 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 235000019382 gum benzoic Nutrition 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- GFAZHVHNLUBROE-UHFFFAOYSA-N hydroxymethyl propionaldehyde Natural products CCC(=O)CO GFAZHVHNLUBROE-UHFFFAOYSA-N 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000012948 isocyanate Substances 0.000 description 1
- 150000002513 isocyanates Chemical class 0.000 description 1
- ZFSLODLOARCGLH-UHFFFAOYSA-N isocyanuric acid Chemical compound OC1=NC(O)=NC(O)=N1 ZFSLODLOARCGLH-UHFFFAOYSA-N 0.000 description 1
- NIMLQBUJDJZYEJ-UHFFFAOYSA-N isophorone diisocyanate Chemical compound CC1(C)CC(N=C=O)CC(C)(CN=C=O)C1 NIMLQBUJDJZYEJ-UHFFFAOYSA-N 0.000 description 1
- 229910001507 metal halide Inorganic materials 0.000 description 1
- 150000005309 metal halides Chemical class 0.000 description 1
- 239000000113 methacrylic resin Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- SLCVBVWXLSEKPL-UHFFFAOYSA-N neopentyl glycol Chemical compound OCC(C)(C)CO SLCVBVWXLSEKPL-UHFFFAOYSA-N 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- SBOJXQVPLKSXOG-UHFFFAOYSA-N o-amino-hydroxylamine Chemical group NON SBOJXQVPLKSXOG-UHFFFAOYSA-N 0.000 description 1
- DXGLGDHPHMLXJC-UHFFFAOYSA-N oxybenzone Chemical compound OC1=CC(OC)=CC=C1C(=O)C1=CC=CC=C1 DXGLGDHPHMLXJC-UHFFFAOYSA-N 0.000 description 1
- FCJSHPDYVMKCHI-UHFFFAOYSA-N phenyl benzoate Chemical compound C=1C=CC=CC=1C(=O)OC1=CC=CC=C1 FCJSHPDYVMKCHI-UHFFFAOYSA-N 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 238000005375 photometry Methods 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 125000005936 piperidyl group Chemical group 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 229920006122 polyamide resin Polymers 0.000 description 1
- 229920001230 polyarylate Polymers 0.000 description 1
- 229920001610 polycaprolactone Polymers 0.000 description 1
- 239000004632 polycaprolactone Substances 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000037048 polymerization activity Effects 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 229920001451 polypropylene glycol Polymers 0.000 description 1
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 238000006748 scratching Methods 0.000 description 1
- 230000002393 scratching effect Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000004528 spin coating Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 150000003464 sulfur compounds Chemical class 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- WUPCFMITFBVJMS-UHFFFAOYSA-N tetrakis(1,2,2,6,6-pentamethylpiperidin-4-yl) butane-1,2,3,4-tetracarboxylate Chemical compound C1C(C)(C)N(C)C(C)(C)CC1OC(=O)CC(C(=O)OC1CC(C)(C)N(C)C(C)(C)C1)C(C(=O)OC1CC(C)(C)N(C)C(C)(C)C1)CC(=O)OC1CC(C)(C)N(C)C(C)(C)C1 WUPCFMITFBVJMS-UHFFFAOYSA-N 0.000 description 1
- NZNAAUDJKMURFU-UHFFFAOYSA-N tetrakis(2,2,6,6-tetramethylpiperidin-4-yl) butane-1,2,3,4-tetracarboxylate Chemical compound C1C(C)(C)NC(C)(C)CC1OC(=O)CC(C(=O)OC1CC(C)(C)NC(C)(C)C1)C(C(=O)OC1CC(C)(C)NC(C)(C)C1)CC(=O)OC1CC(C)(C)NC(C)(C)C1 NZNAAUDJKMURFU-UHFFFAOYSA-N 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 239000002562 thickening agent Substances 0.000 description 1
- KUAZQDVKQLNFPE-UHFFFAOYSA-N thiram Chemical compound CN(C)C(=S)SSC(=S)N(C)C KUAZQDVKQLNFPE-UHFFFAOYSA-N 0.000 description 1
- 229960002447 thiram Drugs 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
Classifications
-
- 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
- C08F290/00—Macromolecular compounds obtained by polymerising monomers on to polymers modified by introduction of aliphatic unsaturated end or side groups
- C08F290/02—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 end groups
- C08F290/06—Polymers provided for in subclass C08G
- C08F290/061—Polyesters; Polycarbonates
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/06—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to radiation
- B05D3/061—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to radiation using U.V.
- B05D3/065—After-treatment
- B05D3/067—Curing or cross-linking the coating
-
- 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
- C08F290/00—Macromolecular compounds obtained by polymerising monomers on to polymers modified by introduction of aliphatic unsaturated end or side groups
- C08F290/02—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 end groups
- C08F290/06—Polymers provided for in subclass C08G
- C08F290/067—Polyurethanes; Polyureas
-
- 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
- C08J7/12—Chemical modification
- C08J7/16—Chemical modification with polymerisable compounds
- C08J7/18—Chemical modification with polymerisable compounds using wave energy or particle radiation
-
- 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
- C09D151/00—Coating compositions based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Coating compositions based on derivatives of such polymers
- C09D151/08—Coating compositions based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Coating compositions based on derivatives of such polymers grafted on to macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
-
- 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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
- F21S41/285—Refractors, transparent cover plates, light guides or filters not provided in groups F21S41/24 - F21S41/2805
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V5/00—Refractors for light sources
-
- 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
-
- 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
- C08J2451/00—Characterised by the use of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers
- C08J2451/08—Characterised by the use of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers grafted on to macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
Definitions
- the present invention relates to a resin composition that can be cured by irradiation with active energy rays, and can form a cured film on the surface of a substrate such as a resin molded product.
- the present invention also relates to a resin molded product on which the cured film is formed and a method for producing the resin molded product.
- a resin molded product produced from a polymethyl methacrylate resin, a polymethacrylimide resin, a polycarbonate resin, a polystyrene resin, an acrylonitrile styrene resin or the like is not only lightweight and excellent in impact resistance, but also has good transparency. These resins are used as materials for various lamp lenses for automobiles, glazing, instrument covers and the like. In particular, for automotive headlamp lenses, resin molded products are used in order to cope with the weight reduction and design diversification of automobiles. However, since the resin molded product has insufficient wear resistance, the surface is easily damaged by contact with other hard objects, friction, scratching, etc., and the surface damage reduces the commercial value. Further, weather resistance is also an important performance for automobile members. In particular, the polycarbonate resin has low weather resistance, and is significantly yellowed by ultraviolet rays or cracks are formed on the surface of the resin molded product.
- Patent Documents 1 to 5 As a method for improving such a defect of the resin molded product, there is a method in which a cured composition is formed by irradiating an active energy ray after applying a resin composition containing a radical polymerizable compound (Patent Documents 1 to 5). 6).
- a laminate having a resin layer obtained by irradiating a composition containing a urethane (meth) acrylate compound made of polycarbonate polyol having a branched alkyl structure as a raw material with active energy rays and curing the composition is tensile. It is known that the strength and elongation in the test are excellent (Patent Document 7).
- JP 56-122840 A Japanese Patent Laid-Open No. 05-230397 Japanese Patent Laid-Open No. 06-128502 JP 05-179157 A JP 2000-63701 A JP 2002-348499 A JP 2007-30479 A
- An object of the present invention is to provide an active energy ray-curable resin composition capable of forming a cured film having excellent weather resistance and abrasion resistance, and resin molding in which a cured film obtained by curing the resin composition is formed And a method for producing the resin molded product.
- An active energy ray-curable resin composition comprising 10 to 43% by mass of urethane (meth) acrylate (b) synthesized from diisocyanate having an alicyclic structure and mono (meth) acrylate containing a hydroxyl group.
- “4 + 2n” X's are each independently a (meth) acryloyl group (CH 2 ⁇ CR—CO (O (CH 2 ) 5 C ⁇ O) y —) modified with caprolactone.
- R represents hydrogen or a methyl group
- y represents an integer of 1 to 5
- a (meth) acryloyloxy group (CH 2 ⁇ CR—COO—) (R represents hydrogen or a methyl group), or —
- An OH group wherein at least one X is a (meth) acryloyl group modified with caprolactone, at least two X are (meth) acryloyloxy groups, and the remaining X is an —OH group.
- N is an integer of 0-4.
- the active energy ray-curable resin composition of the present invention can form a cured film excellent in weather resistance and abrasion resistance.
- the resin molded product of the present invention is excellent in weather resistance and wear resistance. According to the method for producing a resin molded product of the present invention, a resin molded product excellent in weather resistance and wear resistance can be obtained.
- the mono- or polypentaerythritol poly (meth) acrylate (a), the urethane (meth) acrylate (b), the radical polymerizable monomer (c), the photopolymerizable initiator (d), and the ultraviolet absorption Agent (e) and hindered amine light stabilizer (f) are referred to as (a) component, (b) component, (c) component, (d) component, (e) component, and (f) component, respectively.
- a component component
- component component,
- (meth) acrylate means “acrylate” or “methacrylate”
- (meth) acryloyl group means “acryloyl group” or “methacryloyl group”
- (meth) acryloyloxy” “Group” means “acryloyloxy group” or “methacryloyloxy group”.
- the active energy ray-curable resin composition of the present invention contains a mono- or polypentaerythritol poly (meth) acrylate (a) modified with caprolactone represented by the above formula (1) as a radical polymerizable compound.
- the resin composition exhibits a good polymerization activity upon irradiation with active energy rays, and a polymer having a high crosslink density and excellent wear resistance can be produced. Therefore, a cured film having excellent wear resistance can be formed on the substrate surface.
- component (a) examples include compounds in which the (meth) acryloyl group of mono- or polypentaerythritol poly (meth) acrylate is modified with caprolactone.
- pentaerythritol poly (meth) acrylate examples include the following.
- polypentaerythritol poly (meth) acrylate is preferable and dipentaerythritol poly (meth) acrylate is more preferable from the viewpoint of the weather resistance of the cured film.
- dipentaerythritol poly (meth) acrylate dipentaerythritol penta (meth) acrylate and dipentaerythritol hexa (meth) acrylate are preferable, and dipentaerythritol hexa (meth) acrylate is more preferable from the viewpoint of the weather resistance of the cured film. .
- mono or polypentaerythritol poly (meth) acrylate mono or polypentaerythritol polyacrylate is preferable from the viewpoint of curability.
- y of the (meth) acryloyl group (CH 2 ⁇ CR—CO (O (CH 2 ) 5 C ⁇ O) y —) modified with caprolactone is It is preferably 4 or less, more preferably 3 or less, still more preferably 2 or less, and particularly preferably 1.
- the number of (meth) acryloyl groups modified with caprolactone is 1 or more and “2n + 2” or less on average per molecule of the component (a), but the lower limit is 2 from the viewpoint of the weather resistance of the cured film.
- the upper limit is preferably “2n + 1”, more preferably 2n, from the viewpoint of scratch resistance and yellowing degree of the cured film.
- the blending amount of the component (a) in the resin composition of the present invention is 57 to 90% by mass based on 100% by mass of the total amount of radical polymerizable compounds.
- the lower limit of the range is preferably 65% by mass or more, and more preferably 71% by mass or more.
- the upper limit of the range is preferably 85% by mass or less, and more preferably 80% by mass or less.
- the active energy ray-curable resin composition of the present invention comprises a polycarbonate polyol (b1) having a branched alkyl structure and a number average molecular weight in the range of 500 to 1,000 as a radical polymerizable compound, and a diisocyanate having an alicyclic structure. It contains urethane (meth) acrylate (b) synthesized from (b2) and mono (meth) acrylate (b3) containing a hydroxyl group.
- urethane (meth) acrylate (b) synthesized from (b2) and mono (meth) acrylate (b3) containing a hydroxyl group By using this component (b), toughness can be imparted to the cured film of the resin composition, and the weather resistance of the cured film can be improved.
- the polycarbonate polyol (b1) which is the first raw material of the component (b) has a branched alkyl structure.
- the raw material improves the storage stability of the resin composition even when the solid content is high, and improves the flexibility of the cured film obtained from the resin composition.
- the number average molecular weight of this polycarbonate polyol is in the range of 500 to 1,000. When the number average molecular weight is 500 or more, the weather resistance of the cured film obtained from the resin composition is improved. Moreover, when the number average molecular weight is 1000 or less, the wear resistance of the cured coating is improved.
- the number average molecular weight can be calculated from the hydroxyl value and the number of hydroxyl groups in one alcohol molecule which is a component of the polycarbonate polyol by the following formula.
- Number average molecular weight (56.11 ⁇ N / [hydroxyl value]) ⁇ 1000
- N represents the number of hydroxyl groups contained in one molecule of the alcohol component.
- Such a polycarbonate polyol can be synthesized, for example, by a transesterification reaction between a polyhydric alcohol having a branched alkyl structure and a carbonate.
- the polyhydric alcohol having a branched alkyl structure is preferably a dihydric alcohol from the viewpoint of transesterification reactivity.
- the branched alkyl structure of the polyhydric alcohol is preferably a structure having a linear alkyl side chain in the linear alkyl main chain from the viewpoint of transesterification reactivity.
- the number of carbon atoms in the main chain of the branched alkyl structure is preferably 3 to 15, more preferably 5 to 8, from the viewpoint of scratch resistance of the cured coating.
- the number of carbon atoms in the side chain of the branched alkyl structure is preferably 1 to 10, more preferably 1 to 3, from the viewpoint of reactivity.
- polyhydric alcohol having a branched alkyl structure examples include 3-methyl-1,5-pentanediol, neopentyl glycol, 2-ethyl-1,3-hexanediol, 2-methyl-1,8-octane. Diol etc. are mentioned.
- carbonate esters include the following. Cyclic carbonates such as ethylene carbonate; dialkyl carbonates such as dimethyl carbonate, diethyl carbonate, di-n-propyl carbonate, diisopropyl carbonate, dibutyl carbonate, and dicyclohexyl carbonate; diaryl carbonates such as diphenyl carbonate; As the carbonate ester, dialkyl carbonate is preferable from the viewpoint of the weather resistance of the cured film.
- a commercially available product can also be used as this polycarbonate polyol.
- Specific examples of commercially available polycarbonate polyols having a branched alkyl structure and a number average molecular weight in the range of 500 to 1000 include the following. Kuraray Co., Ltd. product names Kuraray polyol C-590 (number average molecular weight 500), Kuraray polyol C-770 (number average molecular weight 800), Kuraray polyol C-1050 (number average molecular weight 1000), Kuraray polyol C-1090 ( Number average molecular weight 1000), Kuraray polyol C1065N (number average molecular weight 1000), Kuraray polyol C-1015N (number average molecular weight 1000), and the like.
- the diisocyanate (b2) which is the second raw material of the component (b) has an alicyclic structure.
- the cured film obtained from the resin composition by the raw material is excellent in both weather resistance and wear resistance.
- Diisocyanates include cyclohexane structures such as dicyclohexylmethane-4,4′-diisocyanate, methylcyclohexane-2,4-diisocyanate, methylcyclohexane-2,6-diisocyanate, 1,3-bis (isocyanatomethyl) cyclohexane, isophorone diisocyanate, etc. It is preferable from a viewpoint of the weather resistance of a cured film.
- the mono (meth) acrylate (b3) containing a hydroxyl group as the third raw material of the component (b) is a compound having one (meth) acryloyl group in one molecule.
- B3 The flexibility of the cured film obtained from the resin composition is improved by the raw material. Moreover, compared with the case where (meth) acrylate having two or more (meth) acryloyl groups in one molecule is used, the storage stability of the resin composition and the weather resistance of the cured film obtained from the resin composition are improved. Excellent. Specific examples of this mono (meth) acrylate include the following.
- Hydroxyalkyl (meth) acrylates such as 2-hydroxyethyl (meth) acrylate, 2-hydroxypropyl (meth) acrylate and 4-hydroxybutyl (meth) acrylate; monoepoxy compounds such as butyl glycidyl ether and 2-ethylhexyl glycidyl ether; Addition reaction product with (meth) acrylic acid; mono (meth) acrylic acid ester of polyethylene glycol or polypropylene glycol; mono (meth) acrylic acid ester of polycaprolactone diol, etc.
- hydroxyalkyl (meth) acrylate is preferable, hydroxyalkyl having 2 to 4 carbon atoms is more preferable, and 2-hydroxyethyl (meth) acrylate is particularly preferable.
- a method for producing the component (b) for example, there is a method of reacting the above-mentioned three kinds of raw materials in the presence of a catalyst for reacting an isocyanate group and a hydroxyl group to form a urethane bond. It is preferable from the viewpoint of stable production of the reaction product that the mixing ratio of the three kinds of raw materials is such that the isocyanate group and the hydroxyl group are approximately equimolar.
- the reaction temperature of the urethanization reaction is preferably 60 to 70 ° C., and the reaction time is preferably 1 to 20 hours.
- the catalyst is preferably di-n-butyltin dilaurate. Since the reaction product generally has a high viscosity, it is preferable to dilute with an organic solvent or other dilution monomer during or after the reaction.
- the amount of component (b) in the resin composition of the present invention is 10 to 43% by mass based on 100% by mass of the total amount of radical polymerizable compounds. Furthermore, the lower limit of the range is preferably 15% by mass or more, and the upper limit is preferably 29% by mass or less.
- the active energy ray-curable resin composition of the present invention is a radical polymerizable monomer other than the component (a) and the component (b) in addition to the component (a) and the component (b) as a radical polymerizable compound.
- the component (c) that crystallizes at a temperature of 25 ° C. may be included as an optional component.
- the presence or absence of crystallization at a temperature of 25 ° C. can be determined by the following method. That is, the appearance of a compound stored at a temperature of 25 ° C. for 10 days is visually evaluated to determine the presence or absence of a crystal component.
- the amount of component (c) in the resin composition is preferably 7% by mass or less, more preferably 5% by mass or less, still more preferably 3% by mass or less, based on 100% by mass of the total amount of radical polymerizable compounds. A mass% or less is particularly preferred, and 0 mass% is most preferred. By reducing the blending amount of the component (c), the storage stability of the resin composition is improved even when the solid content of the resin composition is high.
- component (c) include the following. Isocyanates such as bis (2-acryloyloxyethyl) hydroxyethyl isocyanurate, tris (2-acryloyloxyethyl) isocyanurate, bis (2-acryloyloxypropyl) hydroxyethyl isocyanurate, tris (2-acryloyloxypropyl) isocyanurate Nurate; further stearyl acrylate, 1-adamantyl acrylate, pentaerythritol tetraacrylate and the like.
- Isocyanates such as bis (2-acryloyloxyethyl) hydroxyethyl isocyanurate, tris (2-acryloyloxyethyl) isocyanurate, bis (2-acryloyloxypropyl) hydroxyethyl isocyanurate, tris (2-acryloyloxypropyl) isocyanurate Nurate; further stearyl acrylate, 1-adam
- the photopolymerizable initiator (d) is a compound that can initiate polymerization of a (meth) acrylic monomer or oligomer by irradiation with active energy rays.
- component (d) include the following. Benzoin, benzoin monomethyl ether, benzoin isopropyl ether, acetoin, benzyl, benzophenone, p-methoxybenzophenone, diethoxyacetophenone, benzyldimethyl ketal, 2,2-diethoxyacetophenone, 1-hydroxycyclohexyl phenyl ketone, methylphenylglyoxylate, Ethylphenylglyoxylate, 2-hydroxy-2-methyl-1-phenylpropan-1-one, 2-hydroxy-1- [4- ⁇ 4- (2-hydroxy-2-methyl-propionyl) -benzyl ⁇ - Carbonyl compounds such as phenyl] -2-methyl-propan-1-one; sulfur compounds such as tetramethylthiuram monosulfide and tetramethylthiuram disulfide; 2,4,6-trimethylbenzoyldi Acylphosphine oxide such as E sulf
- the blending amount of the component (d) in the resin composition of the present invention is preferably 0.1 to 10 parts by mass with respect to 100 parts by mass of the total amount of radical polymerizable compounds. Furthermore, the lower limit of the range is more preferably 1 part by mass or more, and the upper limit is more preferably 5 parts by mass or less. As the amount of component (d) is increased, the curability of the resin composition is improved, and as the amount of component (d) is decreased, the transparency and weather resistance of the cured film are improved.
- the resin composition of the present invention preferably further contains an ultraviolet absorber (e).
- the component (e) preferably has a molecular weight of 500 or more from the viewpoint of heat resistance of the resin molded product.
- Component (e) is a triazine-based, benzophenone-based, benzotriazole-based, phenyl salicylate-based from the viewpoints of good solubility in the resin composition and improvement of the weather resistance of the resin molded product on which a cured film of the resin composition is formed.
- an ultraviolet absorber derived from a phenyl benzoate compound and having a maximum absorption wavelength in the range of 240 to 380 nm is preferable.
- a benzophenone-based ultraviolet absorber is preferred. Further, from the viewpoint of preventing yellowing of a substrate such as polycarbonate, a triazine-based or benzotriazole-based ultraviolet absorber is preferable.
- component (e) include the following. 2- [4- ⁇ (2-hydroxy-3-dodecyloxy-propyl) oxy ⁇ -2-hydroxyphenyl] -4,6-bis (2,4-dimethylphenyl) -1,3,5-triazine, 2- [4- ⁇ (2-hydroxy-3-tridecyloxy-propyl) oxy ⁇ -2-hydroxyphenyl] -4,6-bis (2,4-dimethylphenyl) -1,3,5-triazine, 2- ⁇ 4 Triazine compounds such as-(octyl-2-methylethanoate) oxy-2-hydroxyphenyl-4,6- ⁇ bis (2,4-dimethylphenyl) ⁇ -1,3,5-triazine; 2,4- Benzophenone compounds such as dihydroxybenzophenone and 2-hydroxy-4-methoxy-benzophenone; 2- (2H-benzotriazol-2-yl) -4,6-bis (1-methyl) -1-phenyl
- triazine compounds are preferred from the viewpoint that a cured film having good curability of the resin composition and high surface hardness can be obtained.
- 2- [4- ⁇ (2-hydroxy-3-dodecyloxy-propyl) oxy ⁇ -2-Hydroxyphenyl] -4,6-bis (2,4-dimethylphenyl) -1,3,5-triazine 2- [4- ⁇ (2-hydroxy-3-tridecyloxy-propyl) oxy ⁇ - 2-hydroxyphenyl] -4,6-bis (2,4-dimethylphenyl) -1,3,5-triazine is more preferred.
- the component can also be used in combination of two or more kinds of ultraviolet absorbers having a molecular weight of 500 or more.
- the compounding amount of the component (e) in the resin composition of the present invention is preferably 0.5 to 20 parts by mass with respect to 100 parts by mass of the total amount of radical polymerizable compounds. Furthermore, the lower limit of the range is more preferably 5 parts by mass or more, and the upper limit is more preferably 15 parts by mass or less. The greater the amount of component (e), the better the weather resistance of the cured film, and the smaller the amount of component (e), the greater the resin composition's curability and the toughness, heat resistance, and abrasion resistance of the cured film. improves.
- the resin composition of the present invention preferably further contains a hindered amine light stabilizer (f).
- the component (f) is not particularly limited as long as it is a hindered amine light stabilizer. Specific examples of the component (f) include the following.
- piperidine derivatives and amino ether group-containing compounds are preferred from the viewpoint of the weather resistance of the cured coating, and in particular, bis (1,2,2,6,6-pentamethyl-4-piperidyl) sebacate, decanedicarboxylic acid and 2,2,
- a reaction product of a diester compound with 6,6-tetramethyl-1-octoxy-4-piperidinol, 1,1-dimethylethyl hydroperoxide and octane is particularly preferred.
- the blending amount of the component (f) in the resin composition of the present invention is preferably 0.1 to 5 parts by mass with respect to 100 parts by mass of the total amount of the radical polymerizable compound. Furthermore, the lower limit of the range is more preferably 0.3 parts by mass or more, and the upper limit is more preferably 3 parts by mass or less. The greater the amount of component (f), the better the weather resistance of the cured film, and the smaller the amount of component (f), the greater the resin composition's curability and the toughness, heat resistance, and abrasion resistance of the cured film. improves.
- the resin composition of the present invention may further include an organic solvent, an antioxidant, a yellowing inhibitor, a blueing agent, a pigment, and a leveling agent as necessary.
- Various additives such as an antifoaming agent, a thickening agent, an anti-settling agent, an antistatic agent and an antifogging agent may be blended.
- the organic solvent is preferably selected according to the type of substrate.
- an alcohol solvent such as isobutanol or an ester solvent such as normal butyl acetate may be used alone or in combination of two or more thereof.
- the resin composition of the present invention is applied to the surface of a resin molded product as a base material, and the resulting coating film is irradiated with active energy rays to form a cured coating film, it has excellent wear resistance and weather resistance.
- a resin molded product can be obtained.
- methods such as brush coating, spray coating, dip coating, spin coating, curtain coating, and bar coating can be used.
- a coating solution obtained by adding an organic solvent to the resin composition from the viewpoints of the coating property of the resin composition, the smoothness and uniformity of the coating film, and the adhesion of the cured film to the resin molded product.
- the resin composition may be heated or diluted with a subcritical fluid.
- the coating film of the resin composition applied on the resin molded product is irradiated with an active energy ray to form a cured film.
- the film thickness of the coating film formed on the resin molded product is preferably 1 to 50 ⁇ m, and more preferably 3 to 20 ⁇ m.
- the active energy ray ultraviolet rays are preferable from the viewpoint of good curability of the coating film and productivity of the resin molded product.
- the ultraviolet light source a high-pressure mercury lamp, a metal halide lamp, or the like can be used. It is preferable to irradiate the ultraviolet rays of 100 to 400 nm so as to be 100 to 5000 mJ / cm 2 .
- the atmosphere irradiated with the active energy ray may be air or an inert gas such as nitrogen or argon.
- the resin composition of the present invention can be used for modifying the surface of various resin molded products.
- the material of the resin molded product include various thermoplastic resins and thermosetting resins.
- polymethyl methacrylic resin, polycarbonate resin, polyester resin, polyester carbonate resin, polystyrene resin, acrylonitrile-butadiene-styrene resin (ABS resin), acrylonitrile-styrene resin (AS resin), polyamide resin, polyarylate resin examples thereof include polymethacrylimide resin and polyallyl diglycol carbonate resin.
- polymethylmethacrylic resin, polycarbonate resin, polystyrene resin, and polymethacrylimide resin are excellent in transparency and need to be improved in wear resistance.
- the resin molded product is a molded product such as a sheet-shaped molded product, a film-shaped molded product, and various injection molded products obtained by molding these resins.
- the resin composition of the present invention is particularly suitable for surface modification of resin molded products such as automotive headlamp lenses that are exposed to harsh environments for a long period of time.
- the yellow index (YI) value before and after the weather resistance test of the resin molded product was measured using an ultraviolet / visible spectrophotometer (trade name: Instantaneous multi-photometry system MCPD-3000, manufactured by Otsuka Electronics Co., Ltd.). Measurements were made and the amount of increase in YI value was calculated.
- the amount of increase in YI value was determined according to the following criteria. “Excellent”: The increase amount of the YI value is 0 or more and less than 1.0. “Good”: The increase amount of the YI value is 1.0 or more and less than 5.0. “Poor”: YI value increment is 5.0 or more.
- urethane acrylate UA1 (hereinafter, Abbreviated as “UA1”).
- Example 1 Active energy ray-curable resin compositions were prepared at the compounding ratios shown in Table 1. This resin composition was applied to a polycarbonate resin plate (trade name: Lexan LS-II, manufactured by SABIC) having a length of 253 mm, a width of 125 mm, and a thickness of 3 mm so that the thickness of the cured film was 10 ⁇ m. . Subsequently, the organic solvent was volatilized by heat-processing the resin board in which the coating film was formed at 60 degreeC for 3 minute (s) in oven.
- a polycarbonate resin plate trade name: Lexan LS-II, manufactured by SABIC
- the coating film was cured by irradiating ultraviolet rays having a wavelength of 340 nm to 380 nm with an integrated light quantity of 3000 mJ / cm 2 in air using a high-pressure mercury lamp to obtain a cured coating film.
- Examples 2 to 10 Comparative Examples 1 to 5
- a resin composition was prepared with the materials and blending ratios shown in Table 1 or Table 2, and a resin molded article having a cured film formed under the same conditions as in Example 1 was obtained.
- the evaluation results are shown in Tables 1 and 2.
- the resin compositions of Examples 1 to 9 had good evaluation results because the blending ratio of the components (a) to (c) was within a predetermined range.
- the resin composition of Example 10 had good wear resistance, weather resistance and heat resistance, but the content of component (c) was high, so the storage stability of the paint was poor.
- the cured coating obtained from the resin composition of the present invention is effective in improving the weather resistance and wear resistance of resin molded products such as various lamp lenses for automobiles, glazing, and instrument covers.
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Abstract
Description
本発明の活性エネルギー線硬化型樹脂組成物は、ラジカル重合性化合物として、前記の式(1)で示されるカプロラクトンにより変性されたモノ又はポリペンタエリスリトールポリ(メタ)アクリレート(a)を含有する。
本発明の活性エネルギー線硬化型樹脂組成物は、ラジカル重合性化合物として、分岐アルキル構造を有し数平均分子量が500~1000の範囲内であるポリカーボネートポリオール(b1)と、脂環構造を有するジイソシアネート(b2)と、ヒドロキシル基を含有するモノ(メタ)アクリレート(b3)とから合成されるウレタン(メタ)アクリレート(b)を含有する。この(b)成分を用いることにより、樹脂組成物の硬化被膜に強靭性を付与でき、また硬化被膜の耐候性を向上できる。
数平均分子量=(56.11×N/[水酸基価])×1000
但し、Nは、1分子のアルコール成分に含まれる水酸基の数を表す。
本発明の活性エネルギー線硬化型樹脂組成物は、ラジカル重合性化合物として前記の(a)成分及び(b)成分に加えて、(a)成分及び(b)成分以外のラジカル重合性モノマーであって温度25℃において結晶化する(c)成分を任意成分として含んでもよい。温度25℃における結晶化の有無は次の方法により判定できる。すなわち、温度25℃にて10日間保管した化合物の外観を目視評価し、結晶成分の有無を判定する。
光重合性開始剤(d)は、活性エネルギー線の照射により(メタ)アクリル系モノマーまたはオリゴマーの重合を開始させ得る化合物である。
本発明の樹脂組成物は、さらに紫外線吸収剤(e)を含むことが好ましい。(e)成分は、樹脂成形品の耐熱性の観点から分子量500以上のものが好ましい。(e)成分は、樹脂組成物に対する良好な溶解性および樹脂組成物の硬化被膜が形成される樹脂成形品の耐候性の改善の観点から、トリアジン系、ベンゾフェノン系、ベンゾトリアゾール系、サリチル酸フェニル系、または、安息香酸フェニル系の化合物から誘導されたものであって、最大吸収波長が240~380nmの範囲内である紫外線吸収剤が好ましい。樹脂組成物に多量に含有させるという観点からは、ベンゾフェノン系の紫外線吸収剤が好ましい。また、ポリカーボネート等の基材の黄変を防ぐという観点からは、トリアジン系またはベンゾトリアゾール系の紫外線吸収剤が好ましい。
本発明の樹脂組成物は、さらにヒンダードアミン系光安定化剤(f)を含むことが好ましい。(f)成分は、ヒンダードアミン系光安定化剤であれば特に限定されない。(f)成分の具体例としては以下のものが挙げられる。ビス(2,2,6,6-テトラメチル-4-ピペリジル)セバケート、ビス(1,2,2,6,6-ペンタメチル-4-ピペリジル)セバケート、ビス(1-メトキシ-2,2,6,6-テトラメチル-4-ピペリジル)セバケート、ビス(1-エトキシ-2,2,6,6-テトラメチル-4-ピペリジル)セバケート、ビス(1-プロポキシ-2,2,6,6-テトラメチル-4-ピペリジル)セバケート、ビス(1-ブトキシ-2,2,6,6-テトラメチル-4-ピペリジル)セバケート、ビス(1-ペンチロキシ-2,2,6,6-テトラメチル-4-ピペリジル)セバケート、ビス(1-ヘキシロキシ-2,2,6,6-テトラメチル-4-ピペリジル)セバケート、ビス(1-ヘプチロキシ-2,2,6,6-テトラメチル-4-ピペリジル)セバケート、ビス(1-オクトキシ-2,2,6,6-テトラメチル-4-ピペリジル)セバケート、ビス(1-ノニロキシ-2,2,6,6-テトラメチル-4-ピペリジル)セバケート、ビス(1-デカニロキシ-2,2,6,6-テトラメチル-4-ピペリジル)セバケート、ビス(1-ドデシロキシ-2,2,6,6-テトラメチル-4-ピペリジル)セバケート、ビス(1,2,2,6,6-ペンタメチル-4-ピペリジル)-2-(4-メトキシ-ベンジリデン)マロネート、テトラキス(2,2,6,6-テトラメチル-4-ピペリジル)1,2,3,4-ブタンテトラカルボキシラート、テトラキス(1,2,2,6,6-ペンタメチル-4-ピペリジル)1,2,3,4-ブタンテトラカルボキシラート等のピペリジン誘導体;1,2,3,4-ブタンテトラカルボン酸と1,2,2,6,6-ペンタメチル-4-ピペリジノールとβ,β,β,β-テトラメチル-3,9-(2,4,8,10-テトラオキサスピロ[5,5])ウンデカン)ジエタノールとの縮合物;1,2,3,4-ブタンテトラカルボン酸と2,2,6,6-テトラメチル-4-ピペリジノールとβ,β,β,β-テトラメチル-3,9-(2,4,8,10-テトラオキサスピロ[5,5])ウンデカン)ジエタノールとの縮合物;デカンジカルボン酸と2,2,6,6-テトラメチル-1-オクトキシ-4-ピペリジノールとのジエステル化合物と、1,1-ジメチルエチルヒドロパーオキシドと、オクタンとの反応生成物(BASF製、商品名チヌビン123)等のアミノエーテル基含有化合物。この中でもピペリジン誘導体及びアミノエーテル基含有化合物は硬化被膜の耐候性の観点から好ましく、特にビス(1,2,2,6,6-ペンタメチル-4-ピペリジル)セバケート、デカンジカルボン酸と2,2,6,6-テトラメチル-1-オクトキシ-4-ピペリジノールとのジエステル化合物と、1,1-ジメチルエチルヒドロパーオキシドと、オクタンとの反応生成物が特に好ましい。
本発明の樹脂組成物を、基材である樹脂成形品の表面に塗布し、得られた塗膜に活性エネルギー線を照射して硬化被膜を形成すれば、耐摩耗性、耐候性に優れた樹脂成形品を得ることができる。樹脂組成物を基材に塗布するには、例えば、ハケ塗り、スプレーコート、ディップコート、スピンコート、カーテンコート、バーコート等の方法を用いることができる。樹脂組成物の塗布性、塗膜の平滑性、均一性、硬化被膜の樹脂成形品に対する密着性の観点から、樹脂組成物に有機溶剤を添加して得られた塗布液を塗布することが好ましい。また、粘度を下げるために、樹脂組成物を加温したり、亜臨界流体で希釈したりしても良い。
遮光されたガラス瓶中に未硬化の樹脂組成物を入れ、密栓し、-20℃の環境下にて1ヶ月間保管した。その後、樹脂組成物の温度を室温に戻し、樹脂組成物の状態を目視で観察した。樹脂組成物に異物、白化、および曇りのいずれも観察されなかったものを「Good」とし、これらのいずれかが観察されたものを「Poor」と判定した。
その表面に硬化被膜を形成した樹脂成形品について、ヘイズメーター(HM-65W、(株)村上色彩技術研究所製)を用いて、耐摩耗性試験前後のヘイズ値を測定し、ヘイズ値の増加量を求めた。耐摩耗性試験は、JIS K7204「プラスチック-摩耗輪によるプラスチック摩耗試験方法」に準拠し、ROTARY ABRASION TESTER((株)東洋精機製)を使用し、摩耗輪CS-10F、荷重4.9N(500gf)にて硬化被膜に対して100回転摩耗試験を行なった。耐摩耗性は以下の基準で判定した。
「Excellent」:ヘイズ値の増加量が、0%以上5%未満である。
「Good」:ヘイズ値の増加量が、5%以上10%未満である。
「Poor」:ヘイズ値の増加量が、10%以上である。
その表面に硬化被膜を形成した樹脂成形品について、サンシャインカーボンウエザオメーター(スガ試験機(株)製、WELSUN-HC-B型)耐候試験機を用いて、ブラックパネル温度63±3℃、降雨12分間、照射48分間のサイクルの条件で4000時間、耐侯性試験を行なった。次いで、以下の評価(A)~(C)を行った。
耐候性試験後、硬化被膜の外観を目視観察した。硬化被膜にクラック、白化、曇りおよび硬化被膜の剥離のいずれも発生しなかったものを「Good」とし、これらのいずれかが発生したものを「Poor」と判定した。
ヘイズメーター(HM-65W、(株)村上色彩技術研究所製)を用いて、樹脂成形品の耐候性試験前後のヘイズ値を測定し、ヘイズ値の増加量を算出して以下の基準で判定した。
「Excellent」:ヘイズ値の増加量が、0%以上2.0%未満である。
「Good」:ヘイズ値の増加量が、2.0%以上5.0%未満である。
「Poor」:ヘイズ値の増加量が、5.0%以上である。
紫外・可視分光光度計(商品名:瞬間マルチ測光システムMCPD-3000、大塚電子(株)製)を用いて樹脂成形品の耐候性試験前後のイエローインデックス(YI)値を測定し、YI値の増加量を算出した。なお、YI値は、三刺激値(X、Y、Z)を測定し、下記式を用いて算出した。
YI値=100×(1.28×X-1.06×Z)/Y
YI値の増加量について以下の基準で判定した。
「Excellent」:YI値の増加量が、0以上1.0未満である。
「Good」:YI値の増加量が、1.0以上5.0未満である。
「Poor」:YI値の増加量が、5.0以上である。
その表面に硬化被膜を形成した樹脂成形品を120℃の乾燥機に480時間入れることにより耐熱性試験を行った。樹脂成形品を乾燥器から取り出した後、硬化被膜を目視観察し、クラックが観察されなかったものを「Good」とし、観察されたものを「Poor」と判定した。
保温機能付き滴下ロート、還流冷却器、攪拌羽および温度センサーを装備した容量5リットルのフラスコ内に、ジイソシアネートとしてジシクロヘキシルメタン-4,4’-ジイソシアネート2モル、ジラウリン酸n-ブチル錫300ppmを仕込み、フラスコを温水浴で40℃に加温した。保温機能付き滴下ロートを40℃に加温した状態でジオールとして3-メチルペンタン構造を有するポリカーボネートジオール(数平均分子量800、(株)クラレ製、商品名クラレポリオールC770)1モルを4時間かけて前記フラスコ内に滴下した。フラスコ内の液を40℃にて2時間攪拌し、さらに1時間かけて70℃まで昇温させた。その後、ヒドロキシル基を含有するモノ(メタ)アクリレートとして2-ヒドロキシエチルアクリレート2モルを2時間かけて前記フラスコ内に滴下し、さらにフラスコ内の液を2時間攪拌することでウレタンアクリレートUA1(以下、「UA1」と略す。)を合成した。
ジイソシアネートとしてジシクロヘキシルメタン-4,4’-ジイソシアネート5モル、ジオールとしてN-メチル-N-(2-ヒドロキシエチル)-4-ヒドロキシブタナミド1モル及びポリテトラメチレングリコール1.5モル、並びにヒドロキシル基を含有するモノ(メタ)アクリレートとして2-ヒドロキシエチルアクリレート5.4モルを用いたこと以外は、合成例1と同様にしてウレタンアクリレートUA2(以下、「UA2」と略す。)を合成した。
表1に示す配合比で活性エネルギー線硬化型樹脂組成物を調製した。この樹脂組成物を、縦253mm、横125mm、厚さ3mmのポリカーボネート樹脂板(SABIC社製、商品名レキサンLS-II)に、硬化後の被膜の厚さが10μmになるようにバーコート塗装した。次いで、塗膜が形成された樹脂板をオーブン中で60℃で3分間加熱処理することにより有機溶剤を揮発させた。その後、空気中で、高圧水銀ランプを用いて波長340nm~380nmの紫外線を積算光量3000mJ/cm2で塗膜に照射して塗膜を硬化させて硬化被膜を得た。
表1または表2に示す材料及び配合比で樹脂組成物を調製し、実施例1と同様の条件で硬化被膜を形成した樹脂成形品を得た。評価結果を表1および表2に示す。
表1に示すとおり、実施例1~9の樹脂組成物は(a)~(c)成分の配合比が所定の範囲内にあるので、各評価結果が良好であった。実施例10の樹脂組成物は耐摩耗性、耐侯性および耐熱性は良好であるが、(c)成分の含有量が多いので、塗料の貯蔵安定性が不良であった。
Claims (17)
- ラジカル重合性化合物および光重合性開始剤(d)を含む活性エネルギー線硬化型樹脂組成物であって、該ラジカル重合性化合物がその総量100質量%を基準として、
下記式(1)で示されるカプロラクトンにより変性されたモノ又はポリペンタエリスリトールポリ(メタ)アクリレート(a)を57~90質量%、並びに、
分岐アルキル構造を有し数平均分子量が500~1000の範囲内であるポリカーボネートポリオール、脂環構造を有するジイソシアネート、及びヒドロキシル基を含有するモノ(メタ)アクリレートから合成されるウレタン(メタ)アクリレート(b)を10~43質量%
含む、活性エネルギー線硬化型樹脂組成物:
- 前記ラジカル重合性化合物がその総量100質量%を基準として、更に、前記モノ又はポリペンタエリスリトールポリ(メタ)アクリレート(a)及び前記ウレタン(メタ)アクリレート(b)以外のラジカル重合性モノマーであって温度25℃において結晶化するラジカル重合性モノマー(c)を7質量%以下含む請求項1に記載の活性エネルギー線硬化型樹脂組成物。
- 前記ラジカル重合性化合物の総量100質量部に対して、更に紫外線吸収剤(e)を0.5~20質量部含む請求項1に記載の活性エネルギー線硬化型樹脂組成物。
- 前記ラジカル重合性化合物の総量100質量部に対して、更に紫外線吸収剤(e)を0.5~20質量部含む請求項2に記載の活性エネルギー線硬化型樹脂組成物。
- 前記紫外線吸収剤(e)の分子量が500以上である請求項3に記載の活性エネルギー線硬化型樹脂組成物。
- 前記紫外線吸収剤(e)の分子量が500以上である請求項4に記載の活性エネルギー線硬化型樹脂組成物。
- 前記紫外線吸収剤(e)が、分子量500以上の紫外線吸収剤の2種類以上の組み合わせである請求項3に記載の活性エネルギー線硬化型樹脂組成物。
- 前記紫外線吸収剤(e)が、分子量500以上の紫外線吸収剤の2種類以上の組み合わせである請求項4に記載の活性エネルギー線硬化型樹脂組成物。
- 前記ラジカル重合性化合物の総量100質量部に対して、更にヒンダードアミン系光安定化剤(f)を0.1~5質量部含む請求項1~8の何れか一項に記載の活性エネルギー線硬化型樹脂組成物。
- 樹脂成形品の表面に、請求項1~8の何れか一項に記載の活性エネルギー線硬化型樹脂組成物を硬化して得られた硬化被膜が形成されている樹脂成形品。
- 樹脂成形品の表面に、請求項9に記載の活性エネルギー線硬化型樹脂組成物を硬化して得られた硬化被膜が形成されている樹脂成形品。
- 前記樹脂成形品が自動車用ヘッドランプレンズである請求項10に記載の樹脂成形品。
- 前記樹脂成形品が自動車用ヘッドランプレンズである請求項11に記載の樹脂成形品。
- 請求項1~8の何れか一項に記載の活性エネルギー線硬化型樹脂組成物を樹脂成形品の表面に塗布し、得られた塗膜に活性エネルギー線を照射する請求項10に記載の樹脂成形品の製造方法。
- 請求項1~8の何れか一項に記載の活性エネルギー線硬化型樹脂組成物を樹脂成形品の表面に塗布し、得られた塗膜に活性エネルギー線を照射する請求項12に記載の樹脂成形品の製造方法。
- 請求項9に記載の活性エネルギー線硬化型樹脂組成物を樹脂成形品の表面に塗布し、得られた塗膜に活性エネルギー線を照射する請求項11に記載の樹脂成形品の製造方法。
- 請求項9に記載の活性エネルギー線硬化型樹脂組成物を樹脂成形品の表面に塗布し、得られた塗膜に活性エネルギー線を照射する請求項13に記載の樹脂成形品の製造方法。
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