JP5235295B2 - 耐候性向上材を含む水性塗料 - Google Patents
耐候性向上材を含む水性塗料 Download PDFInfo
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- JP5235295B2 JP5235295B2 JP2006317065A JP2006317065A JP5235295B2 JP 5235295 B2 JP5235295 B2 JP 5235295B2 JP 2006317065 A JP2006317065 A JP 2006317065A JP 2006317065 A JP2006317065 A JP 2006317065A JP 5235295 B2 JP5235295 B2 JP 5235295B2
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- 239000004342 Benzoyl peroxide Substances 0.000 description 1
- OMPJBNCRMGITSC-UHFFFAOYSA-N Benzoylperoxide Chemical compound C=1C=CC=CC=1C(=O)OOC(=O)C1=CC=CC=C1 OMPJBNCRMGITSC-UHFFFAOYSA-N 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- XMSXQFUHVRWGNA-UHFFFAOYSA-N Decamethylcyclopentasiloxane Chemical compound C[Si]1(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O1 XMSXQFUHVRWGNA-UHFFFAOYSA-N 0.000 description 1
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical class S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- IUMSDRXLFWAGNT-UHFFFAOYSA-N Dodecamethylcyclohexasiloxane Chemical compound C[Si]1(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O1 IUMSDRXLFWAGNT-UHFFFAOYSA-N 0.000 description 1
- SNRUBQQJIBEYMU-UHFFFAOYSA-N Dodecane Natural products CCCCCCCCCCCC SNRUBQQJIBEYMU-UHFFFAOYSA-N 0.000 description 1
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 1
- UEEJHVSXFDXPFK-UHFFFAOYSA-N N-dimethylaminoethanol Chemical compound CN(C)CCO UEEJHVSXFDXPFK-UHFFFAOYSA-N 0.000 description 1
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 1
- WUGQZFFCHPXWKQ-UHFFFAOYSA-N Propanolamine Chemical compound NCCCO WUGQZFFCHPXWKQ-UHFFFAOYSA-N 0.000 description 1
- DWAQJAXMDSEUJJ-UHFFFAOYSA-M Sodium bisulfite Chemical compound [Na+].OS([O-])=O DWAQJAXMDSEUJJ-UHFFFAOYSA-M 0.000 description 1
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- QYKIQEUNHZKYBP-UHFFFAOYSA-N Vinyl ether Chemical compound C=COC=C QYKIQEUNHZKYBP-UHFFFAOYSA-N 0.000 description 1
- RMKZLFMHXZAGTM-UHFFFAOYSA-N [dimethoxy(propyl)silyl]oxymethyl prop-2-enoate Chemical compound CCC[Si](OC)(OC)OCOC(=O)C=C RMKZLFMHXZAGTM-UHFFFAOYSA-N 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 238000007754 air knife coating Methods 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 125000005370 alkoxysilyl group Chemical group 0.000 description 1
- 150000004996 alkyl benzenes Chemical class 0.000 description 1
- XYLMUPLGERFSHI-UHFFFAOYSA-N alpha-Methylstyrene Chemical compound CC(=C)C1=CC=CC=C1 XYLMUPLGERFSHI-UHFFFAOYSA-N 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- QTQUJRIHTSIVOF-UHFFFAOYSA-N amino(phenyl)methanol Chemical compound NC(O)C1=CC=CC=C1 QTQUJRIHTSIVOF-UHFFFAOYSA-N 0.000 description 1
- CBTVGIZVANVGBH-UHFFFAOYSA-N aminomethyl propanol Chemical compound CC(C)(N)CO CBTVGIZVANVGBH-UHFFFAOYSA-N 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 239000012874 anionic emulsifier Substances 0.000 description 1
- 239000003945 anionic surfactant Substances 0.000 description 1
- 230000002421 anti-septic effect Effects 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 235000006708 antioxidants Nutrition 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 229940072107 ascorbate Drugs 0.000 description 1
- 235000010323 ascorbic acid Nutrition 0.000 description 1
- 239000011668 ascorbic acid Substances 0.000 description 1
- 239000010426 asphalt Substances 0.000 description 1
- 239000012298 atmosphere Substances 0.000 description 1
- 238000007611 bar coating method Methods 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 235000019400 benzoyl peroxide Nutrition 0.000 description 1
- LZPKXTXASVJXNA-UHFFFAOYSA-N bis[2-(1,4,5,6-tetrahydropyrimidin-2-yl)propan-2-yl]diazene Chemical compound N=1CCCNC=1C(C)(C)N=NC(C)(C)C1=NCCCN1 LZPKXTXASVJXNA-UHFFFAOYSA-N 0.000 description 1
- LWMFAFLIWMPZSX-UHFFFAOYSA-N bis[2-(4,5-dihydro-1h-imidazol-2-yl)propan-2-yl]diazene Chemical compound N=1CCNC=1C(C)(C)N=NC(C)(C)C1=NCCN1 LWMFAFLIWMPZSX-UHFFFAOYSA-N 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 238000012662 bulk polymerization Methods 0.000 description 1
- UTOVMEACOLCUCK-PLNGDYQASA-N butyl maleate Chemical compound CCCCOC(=O)\C=C/C(O)=O UTOVMEACOLCUCK-PLNGDYQASA-N 0.000 description 1
- 239000000378 calcium silicate Substances 0.000 description 1
- 229910052918 calcium silicate Inorganic materials 0.000 description 1
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 239000011083 cement mortar Substances 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- HAURRGANAANPSQ-UHFFFAOYSA-N cis-2,4,6-Trimethyl-2,4,6-triphenylcyclotrisiloxane Chemical compound O1[Si](C)(C=2C=CC=CC=2)O[Si](C)(C=2C=CC=CC=2)O[Si]1(C)C1=CC=CC=C1 HAURRGANAANPSQ-UHFFFAOYSA-N 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000006482 condensation reaction Methods 0.000 description 1
- 238000007334 copolymerization reaction Methods 0.000 description 1
- LDHQCZJRKDOVOX-NSCUHMNNSA-N crotonic acid Chemical compound C\C=C\C(O)=O LDHQCZJRKDOVOX-NSCUHMNNSA-N 0.000 description 1
- 150000001923 cyclic compounds Chemical class 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 125000002704 decyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 238000004033 diameter control Methods 0.000 description 1
- UJTGYJODGVUOGO-UHFFFAOYSA-N diethoxy-methyl-propylsilane Chemical compound CCC[Si](C)(OCC)OCC UJTGYJODGVUOGO-UHFFFAOYSA-N 0.000 description 1
- JJQZDUKDJDQPMQ-UHFFFAOYSA-N dimethoxy(dimethyl)silane Chemical compound CO[Si](C)(C)OC JJQZDUKDJDQPMQ-UHFFFAOYSA-N 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 239000002612 dispersion medium Substances 0.000 description 1
- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical compound [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 0.000 description 1
- 229940060296 dodecylbenzenesulfonic acid Drugs 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000001804 emulsifying effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- FWDBOZPQNFPOLF-UHFFFAOYSA-N ethenyl(triethoxy)silane Chemical compound CCO[Si](OCC)(OCC)C=C FWDBOZPQNFPOLF-UHFFFAOYSA-N 0.000 description 1
- NKSJNEHGWDZZQF-UHFFFAOYSA-N ethenyl(trimethoxy)silane Chemical compound CO[Si](OC)(OC)C=C NKSJNEHGWDZZQF-UHFFFAOYSA-N 0.000 description 1
- ZLNAFSPCNATQPQ-UHFFFAOYSA-N ethenyl-dimethoxy-methylsilane Chemical compound CO[Si](C)(OC)C=C ZLNAFSPCNATQPQ-UHFFFAOYSA-N 0.000 description 1
- 239000011790 ferrous sulphate Substances 0.000 description 1
- 235000003891 ferrous sulphate Nutrition 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- XUCNUKMRBVNAPB-UHFFFAOYSA-N fluoroethene Chemical compound FC=C XUCNUKMRBVNAPB-UHFFFAOYSA-N 0.000 description 1
- 238000010528 free radical solution polymerization reaction Methods 0.000 description 1
- 239000001530 fumaric acid Substances 0.000 description 1
- NKHAVTQWNUWKEO-UHFFFAOYSA-N fumaric acid monomethyl ester Natural products COC(=O)C=CC(O)=O NKHAVTQWNUWKEO-UHFFFAOYSA-N 0.000 description 1
- 239000000499 gel Substances 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002366 halogen compounds Chemical class 0.000 description 1
- 125000005843 halogen group Chemical group 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- HTDJPCNNEPUOOQ-UHFFFAOYSA-N hexamethylcyclotrisiloxane Chemical compound C[Si]1(C)O[Si](C)(C)O[Si](C)(C)O1 HTDJPCNNEPUOOQ-UHFFFAOYSA-N 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 125000004283 imidazolin-2-yl group Chemical group [H]N1C(*)=NC([H])([H])C1([H])[H] 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 description 1
- 229910000359 iron(II) sulfate Inorganic materials 0.000 description 1
- 125000000959 isobutyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])* 0.000 description 1
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- 239000004611 light stabiliser Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 description 1
- 239000011976 maleic acid Substances 0.000 description 1
- 239000006224 matting agent Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000010907 mechanical stirring Methods 0.000 description 1
- 239000002609 medium Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- CERQOIWHTDAKMF-UHFFFAOYSA-M methacrylate group Chemical group C(C(=C)C)(=O)[O-] CERQOIWHTDAKMF-UHFFFAOYSA-M 0.000 description 1
- NKHAVTQWNUWKEO-IHWYPQMZSA-N methyl hydrogen fumarate Chemical compound COC(=O)\C=C/C(O)=O NKHAVTQWNUWKEO-IHWYPQMZSA-N 0.000 description 1
- LVHBHZANLOWSRM-UHFFFAOYSA-N methylenebutanedioic acid Natural products OC(=O)CC(=C)C(O)=O LVHBHZANLOWSRM-UHFFFAOYSA-N 0.000 description 1
- BFXIKLCIZHOAAZ-UHFFFAOYSA-N methyltrimethoxysilane Chemical compound CO[Si](C)(OC)OC BFXIKLCIZHOAAZ-UHFFFAOYSA-N 0.000 description 1
- ZKECVHXIVHRIIA-UHFFFAOYSA-N n-(2,2,6,6-tetramethylpiperidin-1-yl)prop-2-enamide Chemical compound CC1(C)CCCC(C)(C)N1NC(=O)C=C ZKECVHXIVHRIIA-UHFFFAOYSA-N 0.000 description 1
- BUGISVZCMXHOHO-UHFFFAOYSA-N n-[1,3-dihydroxy-2-(hydroxymethyl)propan-2-yl]-2-[[1-[[1,3-dihydroxy-2-(hydroxymethyl)propan-2-yl]amino]-2-methyl-1-oxopropan-2-yl]diazenyl]-2-methylpropanamide Chemical compound OCC(CO)(CO)NC(=O)C(C)(C)N=NC(C)(C)C(=O)NC(CO)(CO)CO BUGISVZCMXHOHO-UHFFFAOYSA-N 0.000 description 1
- 125000004108 n-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000001280 n-hexyl group Chemical group C(CCCCC)* 0.000 description 1
- 125000004123 n-propyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 230000003472 neutralizing effect Effects 0.000 description 1
- 239000012875 nonionic emulsifier Substances 0.000 description 1
- 239000002736 nonionic surfactant Substances 0.000 description 1
- 125000001400 nonyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- IOQPZZOEVPZRBK-UHFFFAOYSA-N octan-1-amine Chemical compound CCCCCCCCN IOQPZZOEVPZRBK-UHFFFAOYSA-N 0.000 description 1
- KZCOBXFFBQJQHH-UHFFFAOYSA-N octane-1-thiol Chemical compound CCCCCCCCS KZCOBXFFBQJQHH-UHFFFAOYSA-N 0.000 description 1
- 150000001451 organic peroxides Chemical class 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- DPBLXKKOBLCELK-UHFFFAOYSA-N pentan-1-amine Chemical compound CCCCCN DPBLXKKOBLCELK-UHFFFAOYSA-N 0.000 description 1
- JRKICGRDRMAZLK-UHFFFAOYSA-L persulfate group Chemical group S(=O)(=O)([O-])OOS(=O)(=O)[O-] JRKICGRDRMAZLK-UHFFFAOYSA-L 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 239000002685 polymerization catalyst Substances 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
- QROGIFZRVHSFLM-UHFFFAOYSA-N prop-1-enylbenzene Chemical class CC=CC1=CC=CC=C1 QROGIFZRVHSFLM-UHFFFAOYSA-N 0.000 description 1
- HJWLCRVIBGQPNF-UHFFFAOYSA-N prop-2-enylbenzene Chemical compound C=CCC1=CC=CC=C1 HJWLCRVIBGQPNF-UHFFFAOYSA-N 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
- 239000007870 radical polymerization initiator Substances 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 238000007761 roller coating Methods 0.000 description 1
- 238000007665 sagging Methods 0.000 description 1
- 125000002914 sec-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- 150000004756 silanes Chemical class 0.000 description 1
- 229920005573 silicon-containing polymer Polymers 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 239000010454 slate Substances 0.000 description 1
- 239000012748 slip agent Substances 0.000 description 1
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 description 1
- 235000010267 sodium hydrogen sulphite Nutrition 0.000 description 1
- CHQMHPLRPQMAMX-UHFFFAOYSA-L sodium persulfate Substances [Na+].[Na+].[O-]S(=O)(=O)OOS([O-])(=O)=O CHQMHPLRPQMAMX-UHFFFAOYSA-L 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 125000004079 stearyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000001424 substituent group Chemical group 0.000 description 1
- 125000000542 sulfonic acid group Chemical group 0.000 description 1
- 238000010557 suspension polymerization reaction Methods 0.000 description 1
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- ISXSCDLOGDJUNJ-UHFFFAOYSA-N tert-butyl prop-2-enoate Chemical compound CC(C)(C)OC(=O)C=C ISXSCDLOGDJUNJ-UHFFFAOYSA-N 0.000 description 1
- CIHOLLKRGTVIJN-UHFFFAOYSA-N tert‐butyl hydroperoxide Chemical compound CC(C)(C)OO CIHOLLKRGTVIJN-UHFFFAOYSA-N 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- GEKDEMKPCKTKEC-UHFFFAOYSA-N tetradecane-1-thiol Chemical compound CCCCCCCCCCCCCCS GEKDEMKPCKTKEC-UHFFFAOYSA-N 0.000 description 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 1
- 125000003396 thiol group Chemical group [H]S* 0.000 description 1
- LDHQCZJRKDOVOX-UHFFFAOYSA-N trans-crotonic acid Natural products CC=CC(O)=O LDHQCZJRKDOVOX-UHFFFAOYSA-N 0.000 description 1
- 125000000026 trimethylsilyl group Chemical group [H]C([H])([H])[Si]([*])(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- UKRDPEFKFJNXQM-UHFFFAOYSA-N vinylsilane Chemical class [SiH3]C=C UKRDPEFKFJNXQM-UHFFFAOYSA-N 0.000 description 1
- NLVXSWCKKBEXTG-UHFFFAOYSA-N vinylsulfonic acid Chemical compound OS(=O)(=O)C=C NLVXSWCKKBEXTG-UHFFFAOYSA-N 0.000 description 1
- 230000002087 whitening effect Effects 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
- LRXTYHSAJDENHV-UHFFFAOYSA-H zinc phosphate Chemical compound [Zn+2].[Zn+2].[Zn+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O LRXTYHSAJDENHV-UHFFFAOYSA-H 0.000 description 1
- 229910000165 zinc phosphate Inorganic materials 0.000 description 1
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
- Graft Or Block Polymers (AREA)
- Paints Or Removers (AREA)
Description
[式中、Wiはモノマーiの質量分率、TgiはモノマーiのホモポリマーのTg(℃)を示す。]
(1)機械安定性試験
実施例1〜5、比較例1〜3の向上材について、各100gをマローン試験機にて15kgのシェアをかけて10分間試験を行い、100メッシュのナイロン紗によってろ過し、その残渣の量を測定し、以下の基準で評価をした。
「◎」 :残渣の量が0.01g未満であるかほとんど見られない。
「○」 :残渣の量が0.01以上0.1g未満である。
「△」 :残渣の量が0.1以上0.5g未満である。
「×」 :残渣の量が0.5g以上である、又は試験中にゲル化する。
実施例1〜5、比較例1〜3の向上材について、各200gを密栓可能なガラスビンに入れ50℃の恒温水槽に1週間入れる。その後取り出し、凝固物の有無と粘度を確認し、以下の基準で評価をした。
「◎」 :凝固物も無く、粘度の変化率は±20%未満である。
「○」 :凝固物も無く、粘度の変化率は±20%以上±35%未満である。
「△」 :凝固物も無く、粘度の変化率は±35%以上±50%未満である。
「×」 :凝固物が見られる。
実施例1〜5、比較例1〜3において重合時のカレットについて、100メッシュのナイロン紗で濾過捕集し、50℃の乾燥炉で24時間乾燥させその重量を測定し、以下の基準で評価した。
「◎」 :ドライ状態のカレット量が100ppm未満である。
「○」 :ドライ状態のカレット量が100ppm以上1000ppm未満である。
「△」 :ドライ状態のカレット量は1000ppm以上であるが、重合可能。
「×」 :不安定な為、重合不可能。
実施例1〜5、比較例1〜3の向上材を参考例1の水性塗料に対し、表2に記載の共重合体(A)と共重合体(B)の比率にて配合する。調製した水性塗料100gに対し、「サーフィノールDF−58」(商品名、エア・プロダクツ(株)製、消泡剤)0.5gを加え、十分に攪拌し100メッシュナイロン紗を用いてろ過を行い、評価用クリアー塗料を得た。リン酸亜鉛処理鋼鈑(ボンデライト#100処理鋼鈑、板厚0.8mm、70mm×150mm)に上記で作成した塗料を乾燥膜厚が50μmになるようにスプレー塗装し、その後室温で1時間放置し、80℃で1時間強制乾燥したものを、耐候性試験、耐候性向上性試験の試験塗板とした。
ガラス板上に8MILアプリケーターを用いてクリアー塗料を塗布し、その後室温にて1時間乾燥させた後、80℃で1時間強制乾燥したものを、相溶性評価用の塗板とした。塗膜の状態を目視で確認し、以下の基準で判定した。
「○」 :ヘイズが見られないか、見られたとしても極めて僅かである。
「×」 :ヘイズが明確に見られる。
ガラス板上に8MILアプリケーターを用いてクリアー塗料を塗布し、その後室温にて1時間乾燥させた後、80℃で1時間強制乾燥したものを、耐温水性評価用の塗板とした。評価塗板を室温(約40℃)にて水に1週間浸漬させた。取り出し直後の塗膜白化度ΔLを日本電色工業(株)製スペクトロカラーメーターSE−2000を用いて測定した。
「◎」 :2以下
「○」 :2より大きく5以下
「△」 :5より大きく10以下
「×」 :10より大きい
「◎」 :耐水性評価において、被添加塗膜の耐水性を3段階以上向上させる。
「○」 :耐水性評価において、被添加塗膜の耐水性を2段階向上させる。
「△」 :耐水性評価において、被添加塗膜の耐水性を1段階向上させる。
「×」 :耐水性評価において、被添加塗膜の耐水性評価結果が同等又は低下させる。
サンシャインカーボンウエザオメーター(スガ試験機製、WEL−SUN−HC−B型)耐候試験機(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)を用いて3000時間試験を行い、光沢保持率を測定し、以下の基準で判定した。
「◎」 :85%以上。
「○」 :70%以上、85%未満。
「△」 :50%以上、70%未満。
「×」 :50%未満。
<クリアー>
「◎」 :耐候性評価において、被添加塗膜の耐候性を3段階向上させる。
「○」 :耐候性評価において、被添加塗膜の耐候性を2段階向上させる。
「△」 :耐候性評価において、被添加塗膜の耐候性を1段階向上させる。
「×」 :耐候性評価における、被添加塗膜の耐候性向上が見られないか、見られたとしても1段階の向上効果もない。
(合成例1)
<ポリオルガノシロキサン重合体(a)の作成>
オクタメチルシクロテトラシロキサン95部と、γ−メタクリロキシプロピルトリメトキシシラン5部、水310部及びドデシルベンゼンスルホン酸ナトリウム0.7部からなる組成物をホモミキサーで予備混合した後、圧力式ホモジナイザーによる19.6MPa(200kg/cm2)の圧力で強制乳化してシリコーン原料エマルジョンを得た。
(製造例1)
攪拌機、還流冷却管、温度制御装置、滴下ポンプ及び窒素導入管を備えたフラスコに、脱イオン水45部、合成例1で得られたエチレン性不飽和基を有するポリオルガノシロキサン重合体(a)の水性分散体5部、表1に示す割合で配合された乳化物(A)のうち10質量%を反応容器内に仕込み、反応容器内部を窒素で置換しながら75℃まで昇温した後、過硫酸アンモニウム(重合開始剤)0.1部を1部の水に溶解した開始剤溶液を加えシード粒子を形成した。溶液の温度を温度計にて計測し、発熱ピークを確認した後、乳化物Aの残りを内温75℃で4時間かけて滴下し、さらに内温75℃のまま2時間熟成することで乳化物Aの単量体の重合及び重合体(a)とのグラフト重合を行い、共重合体(A)の水分散体を形成した。
製造例1と同様な方法で、表1に示された組成より耐候性向上材を製造した。得られた耐候性向上材中の固形分量、pH、粘度、MFT、Tgは下記表1に示す通りであった。
製造例1と同様のフラスコに、1段目の乳化重合として、イオン交換水60部及び表1に示された1段目プレエマルション液のうちの5質量%を仕込んだ。内温を80℃に昇温し、十分に窒素置換し、過硫酸カリウムの5%水溶液1部を添加して重合を開始した。次いで、反応系内を80℃で5分間保持し、内温を80℃に保ちながら1段目用プレエマルション液の残りを90分かけて滴下し、さらにその温度で0.5時間反応させた。その後、25%アンモニア水0.4部を添加し、pHが4になるように生成エマルションを中和した。
攪拌機、還流冷却管、温度制御装置、滴下ポンプ及び窒素導入管を備えたフラスコに、脱イオン水45部、表1に示す割合で配合された乳化物Aのうちの5質量%と28質量%アンモニア水溶液0.2部を反応容器内に仕込み、反応容器内部を窒素で置換しながら75℃まで昇温した後、過硫酸アンモニウム(重合開始剤)0.1部を5部の水に溶解した開始剤溶液を加えシード粒子を形成した。溶液の温度を温度計にて計測し、発熱ピークを確認した後、乳化物Aの残りを内温75℃で4時間かけて滴下し、さらに内温75℃のまま2時間熟成することで乳化物Aの単量体の重合を行い、共重合体(A)を形成した。
攪拌機、還流冷却管、温度制御装置、滴下ポンプ及び窒素導入管を備えたフラスコに、合成例1で得られたエチレン性不飽和基を有するポリオルガノシロキサン重合体(a)の水性分散体100部、表1に示す割合で配合された乳化物Aのうちの10質量%を反応容器内に仕込み、反応容器内部を窒素で置換しながら75℃まで昇温した。その後、過硫酸アンモニウム(重合開始剤)0.1部を1部の水に溶解した開始剤溶液を加えシード粒子を形成する段より凝固物が発生し、残りの乳化物Aを滴下中に発生した凝固物により攪拌が困難となった為、重合を中止した。
(参考例1)
攪拌機、還流冷却管、温度制御装置、滴下ポンプ及び窒素導入管を備えたフラスコに、脱イオン水45部と乳化剤「アデカリアソープSR−10」(商品名、(株)ADEKA製)0.2部を仕込み反応容器内部を窒素で置換した。スチレン16部、メチルメタクリレート52部、n−ブチルアクリレート30部、脱イオン水50部、乳化剤「SR−10」3部をプレ乳化し乳化物(α)とした。乳化物(α)のうち5質量%を反応容器中に仕込み、75℃まで昇温した後、過硫酸アンモニウム(重合開始剤)0.2部を5部の水に溶解した開始剤溶液を加えシード粒子を形成した。溶液の温度を温度計にて計測し、発熱ピークを確認した後、乳化物(α)の残り45質量%を内温75℃で2時間かけて滴下し、乳化物(β)とした。残りの乳化物(α)に対し2部のアクリル酸を加え再度プレ乳化し(乳化物γ)、乳化物(β)調製1時間後より、乳化物(γ)を内温75℃で2時間かけて乳化物(β)に滴下した。その後内温75℃のまま2時間熟成することで共重合体(B)の水分散体を得た。その後冷却を行い、60℃以下の温度で28質量%アンモニア水溶液1部を添加し、被添加水性塗料を調製した。
製造例1の共重合体(A)の耐候性向上材20g(固形分10g)と参考例1の被添加水性塗料180g(固形分90g)を密栓可能なガラス瓶に採取し、造膜助剤として「キョーワノールM」(2,2,4−トリメチル−1,3−ペンタンジオールモノイソブチレートの商品名:協和発酵ケミカル(株)製)8gを加え、ガラス棒で10分間十分に攪拌し、密栓して一晩放置し、塗膜評価用水性塗料を調製した。
実施例1と同様な方法で、耐候性向上材中の共重合体(A)と被添加水性塗料中の共重合体(B)が表2に示された比率となるよう混合し、水性塗料を調製した。
参考例1にて調製した被添加水性塗料200gを密栓可能なガラス瓶に採取し、造膜助剤として「キョーワノールM」8gを加え、ガラス棒で10分間十分に攪拌し、密栓して一晩放置し、塗膜評価用水性塗料を調製した。
実施例1と同様な方法で、製造比較例1〜2で得られた耐候性向上材中の共重合体(A)と被添加水性塗料中の共重合体(B)が表2に示された比率となるよう混合し、水性塗料を調製した。
HALS2:4−メタクリロイルオキシ−1,2,2,6,6−ペンタメチルピペリジン
MMA:メチルメタクリレート
St:スチレン
n−BMA:ノルマルブチルメタクリレート
n−BA:ノルマルブチルアクリレート
2−EHA:2−エチルヘキシルアクリレート
SR−10:反応型アニオン性界面活性剤「アデカリアソープSR−10」(商品名、(株)ADEKA製)
ER−30:反応型ノニオン性界面活性剤「アデカリアソープER−30」(商品名、(株)ADEKA製)
NDM:ノルマルドデシルメルカプタン
Claims (1)
- グラフト点を形成可能な官能基を有するポリオルガノシロキサン重合体(a)1〜50質量%、下記一般式(I)で表される、分子内にピペリジル基を持つエチレン性不飽和単量体(b)20〜50質量%と、前記(b)とは異なり、かつ酸性官能基含有不飽和単量体の量が0.2質量%以下であるエチレン性不飽和単量体(c)30〜79質量%(ただし、成分(a)、(b)、(c)の合計は100質量%)とを乳化グラフト重合して得られる共重合体(A)を含有する耐候性向上材を被添加水性塗料に添加してなる水性塗料であって、耐候性向上材中の共重合体(A)が、被添加水性塗料中に含まれる共重合体(A)とは異なり、分子内にピペリジル基を持つエチレン性不飽和単量体(b)が共重合されておらず、かつ(メタ)アクリル系、ウレタン系、ポリエステル系、エポキシ系およびアルキッド系高分子からなる群から選ばれる少なくとも1種の重合体(B)との固形分合計100質量部に対し、4〜10質量部含有されていることを特徴とする水性塗料。
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