WO2022264761A1 - ラジカル重合性樹脂組成物 - Google Patents
ラジカル重合性樹脂組成物 Download PDFInfo
- Publication number
- WO2022264761A1 WO2022264761A1 PCT/JP2022/021260 JP2022021260W WO2022264761A1 WO 2022264761 A1 WO2022264761 A1 WO 2022264761A1 JP 2022021260 W JP2022021260 W JP 2022021260W WO 2022264761 A1 WO2022264761 A1 WO 2022264761A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- radically polymerizable
- polymerizable resin
- meth
- resin composition
- acrylate
- Prior art date
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- 239000011342 resin composition Substances 0.000 title claims abstract description 68
- -1 amine compound Chemical class 0.000 claims abstract description 114
- 150000001875 compounds Chemical class 0.000 claims abstract description 63
- 229920005989 resin Polymers 0.000 claims abstract description 36
- 239000011347 resin Substances 0.000 claims abstract description 36
- 150000002989 phenols Chemical class 0.000 claims abstract description 25
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims description 94
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 claims description 22
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 claims description 18
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 16
- 239000004593 Epoxy Substances 0.000 claims description 16
- 229920006305 unsaturated polyester Polymers 0.000 claims description 15
- RRHGJUQNOFWUDK-UHFFFAOYSA-N Isoprene Chemical compound CC(=C)C=C RRHGJUQNOFWUDK-UHFFFAOYSA-N 0.000 claims description 14
- NFHFRUOZVGFOOS-UHFFFAOYSA-N palladium;triphenylphosphane Chemical compound [Pd].C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1 NFHFRUOZVGFOOS-UHFFFAOYSA-N 0.000 claims description 14
- 239000007983 Tris buffer Substances 0.000 claims description 12
- 239000003795 chemical substances by application Substances 0.000 claims description 10
- 239000003566 sealing material Substances 0.000 claims description 5
- 239000003999 initiator Substances 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 2
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical class C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 description 25
- 239000003822 epoxy resin Substances 0.000 description 17
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 17
- 229920000647 polyepoxide Polymers 0.000 description 17
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 16
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 15
- 239000002253 acid Substances 0.000 description 15
- 150000007519 polyprotic acids Polymers 0.000 description 13
- 150000003254 radicals Chemical group 0.000 description 13
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 12
- 238000000034 method Methods 0.000 description 12
- 229920003023 plastic Polymers 0.000 description 12
- 239000004033 plastic Substances 0.000 description 12
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 10
- 239000003963 antioxidant agent Substances 0.000 description 10
- 235000006708 antioxidants Nutrition 0.000 description 10
- 230000015572 biosynthetic process Effects 0.000 description 10
- 238000003786 synthesis reaction Methods 0.000 description 10
- 150000001252 acrylic acid derivatives Chemical class 0.000 description 9
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 8
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 8
- QQVIHTHCMHWDBS-UHFFFAOYSA-N isophthalic acid Chemical compound OC(=O)C1=CC=CC(C(O)=O)=C1 QQVIHTHCMHWDBS-UHFFFAOYSA-N 0.000 description 8
- 238000004898 kneading Methods 0.000 description 8
- 230000000704 physical effect Effects 0.000 description 8
- 239000003054 catalyst Substances 0.000 description 7
- 238000005886 esterification reaction Methods 0.000 description 7
- 150000002430 hydrocarbons Chemical group 0.000 description 7
- KWOLFJPFCHCOCG-UHFFFAOYSA-N Acetophenone Chemical compound CC(=O)C1=CC=CC=C1 KWOLFJPFCHCOCG-UHFFFAOYSA-N 0.000 description 6
- VZCYOOQTPOCHFL-OWOJBTEDSA-N Fumaric acid Chemical compound OC(=O)\C=C\C(O)=O VZCYOOQTPOCHFL-OWOJBTEDSA-N 0.000 description 6
- QIGBRXMKCJKVMJ-UHFFFAOYSA-N Hydroquinone Chemical compound OC1=CC=C(O)C=C1 QIGBRXMKCJKVMJ-UHFFFAOYSA-N 0.000 description 6
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 6
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 description 6
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 description 6
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- 238000010438 heat treatment Methods 0.000 description 6
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- 229920006395 saturated elastomer Polymers 0.000 description 6
- 239000002904 solvent Substances 0.000 description 6
- BGYHLZZASRKEJE-UHFFFAOYSA-N [3-[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxy]-2,2-bis[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxymethyl]propyl] 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CCC(=O)OCC(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 BGYHLZZASRKEJE-UHFFFAOYSA-N 0.000 description 5
- 125000002947 alkylene group Chemical group 0.000 description 5
- 230000003078 antioxidant effect Effects 0.000 description 5
- 125000004432 carbon atom Chemical group C* 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 5
- 125000003700 epoxy group Chemical group 0.000 description 5
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- 238000011156 evaluation Methods 0.000 description 5
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 description 5
- 230000007774 longterm Effects 0.000 description 5
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- SLCVBVWXLSEKPL-UHFFFAOYSA-N neopentyl glycol Chemical compound OCC(C)(C)CO SLCVBVWXLSEKPL-UHFFFAOYSA-N 0.000 description 5
- 229920001515 polyalkylene glycol Polymers 0.000 description 5
- 239000007870 radical polymerization initiator Substances 0.000 description 5
- 238000003860 storage Methods 0.000 description 5
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 5
- HECLRDQVFMWTQS-RGOKHQFPSA-N 1755-01-7 Chemical compound C1[C@H]2[C@@H]3CC=C[C@@H]3[C@@H]1C=C2 HECLRDQVFMWTQS-RGOKHQFPSA-N 0.000 description 4
- MOBNLCPBAMKACS-UHFFFAOYSA-N 2-(1-chloroethyl)oxirane Chemical compound CC(Cl)C1CO1 MOBNLCPBAMKACS-UHFFFAOYSA-N 0.000 description 4
- XOUQAVYLRNOXDO-UHFFFAOYSA-N 2-tert-butyl-5-methylphenol Chemical compound CC1=CC=C(C(C)(C)C)C(O)=C1 XOUQAVYLRNOXDO-UHFFFAOYSA-N 0.000 description 4
- UPMLOUAZCHDJJD-UHFFFAOYSA-N 4,4'-Diphenylmethane Diisocyanate Chemical compound C1=CC(N=C=O)=CC=C1CC1=CC=C(N=C=O)C=C1 UPMLOUAZCHDJJD-UHFFFAOYSA-N 0.000 description 4
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 description 4
- BRLQWZUYTZBJKN-UHFFFAOYSA-N Epichlorohydrin Chemical compound ClCC1CO1 BRLQWZUYTZBJKN-UHFFFAOYSA-N 0.000 description 4
- WOBHKFSMXKNTIM-UHFFFAOYSA-N Hydroxyethyl methacrylate Chemical compound CC(=C)C(=O)OCCO WOBHKFSMXKNTIM-UHFFFAOYSA-N 0.000 description 4
- 150000008065 acid anhydrides Chemical class 0.000 description 4
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 4
- 239000000654 additive Substances 0.000 description 4
- 125000003118 aryl group Chemical group 0.000 description 4
- 125000001797 benzyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])* 0.000 description 4
- PXKLMJQFEQBVLD-UHFFFAOYSA-N bisphenol F Chemical compound C1=CC(O)=CC=C1CC1=CC=C(O)C=C1 PXKLMJQFEQBVLD-UHFFFAOYSA-N 0.000 description 4
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 4
- 150000002148 esters Chemical class 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
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- 229920003986 novolac Polymers 0.000 description 4
- XNGIFLGASWRNHJ-UHFFFAOYSA-N phthalic acid Chemical compound OC(=O)C1=CC=CC=C1C(O)=O XNGIFLGASWRNHJ-UHFFFAOYSA-N 0.000 description 4
- LGRFSURHDFAFJT-UHFFFAOYSA-N phthalic anhydride Chemical class C1=CC=C2C(=O)OC(=O)C2=C1 LGRFSURHDFAFJT-UHFFFAOYSA-N 0.000 description 4
- 239000002683 reaction inhibitor Substances 0.000 description 4
- 238000010992 reflux Methods 0.000 description 4
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- 230000006641 stabilisation Effects 0.000 description 4
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- 238000003756 stirring Methods 0.000 description 4
- 150000005846 sugar alcohols Polymers 0.000 description 4
- XZWYAMYRMMMHKM-UHFFFAOYSA-N 1-(2-phenylphenyl)ethanone Chemical compound CC(=O)C1=CC=CC=C1C1=CC=CC=C1 XZWYAMYRMMMHKM-UHFFFAOYSA-N 0.000 description 3
- XMNIXWIUMCBBBL-UHFFFAOYSA-N 2-(2-phenylpropan-2-ylperoxy)propan-2-ylbenzene Chemical compound C=1C=CC=CC=1C(C)(C)OOC(C)(C)C1=CC=CC=C1 XMNIXWIUMCBBBL-UHFFFAOYSA-N 0.000 description 3
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 3
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- FRIBMENBGGCKPD-UHFFFAOYSA-N 3-(2,3-dimethoxyphenyl)prop-2-enal Chemical compound COC1=CC=CC(C=CC=O)=C1OC FRIBMENBGGCKPD-UHFFFAOYSA-N 0.000 description 3
- VSAWBBYYMBQKIK-UHFFFAOYSA-N 4-[[3,5-bis[(3,5-ditert-butyl-4-hydroxyphenyl)methyl]-2,4,6-trimethylphenyl]methyl]-2,6-ditert-butylphenol Chemical compound CC1=C(CC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)C(C)=C(CC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)C(C)=C1CC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 VSAWBBYYMBQKIK-UHFFFAOYSA-N 0.000 description 3
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- JHIWVOJDXOSYLW-UHFFFAOYSA-N butyl 2,2-difluorocyclopropane-1-carboxylate Chemical compound CCCCOC(=O)C1CC1(F)F JHIWVOJDXOSYLW-UHFFFAOYSA-N 0.000 description 3
- 125000002993 cycloalkylene group Chemical group 0.000 description 3
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- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 3
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- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
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- BGNXCDMCOKJUMV-UHFFFAOYSA-N Tert-Butylhydroquinone Chemical compound CC(C)(C)C1=CC(O)=CC=C1O BGNXCDMCOKJUMV-UHFFFAOYSA-N 0.000 description 1
- QHWKHLYUUZGSCW-UHFFFAOYSA-N Tetrabromophthalic anhydride Chemical compound BrC1=C(Br)C(Br)=C2C(=O)OC(=O)C2=C1Br QHWKHLYUUZGSCW-UHFFFAOYSA-N 0.000 description 1
- UWHCKJMYHZGTIT-UHFFFAOYSA-N Tetraethylene glycol, Natural products OCCOCCOCCOCCO UWHCKJMYHZGTIT-UHFFFAOYSA-N 0.000 description 1
- KIEZCQDQEPYXOS-UHFFFAOYSA-N [2,2,4-trimethyl-1-(2-methylpropanoyloxy)pentyl] 2-methylpropanoate Chemical compound CC(C)CC(C)(C)C(OC(=O)C(C)C)OC(=O)C(C)C KIEZCQDQEPYXOS-UHFFFAOYSA-N 0.000 description 1
- YIMQCDZDWXUDCA-UHFFFAOYSA-N [4-(hydroxymethyl)cyclohexyl]methanol Chemical compound OCC1CCC(CO)CC1 YIMQCDZDWXUDCA-UHFFFAOYSA-N 0.000 description 1
- 125000004054 acenaphthylenyl group Chemical group C1(=CC2=CC=CC3=CC=CC1=C23)* 0.000 description 1
- ZOIORXHNWRGPMV-UHFFFAOYSA-N acetic acid;zinc Chemical compound [Zn].CC(O)=O.CC(O)=O ZOIORXHNWRGPMV-UHFFFAOYSA-N 0.000 description 1
- HXGDTGSAIMULJN-UHFFFAOYSA-N acetnaphthylene Natural products C1=CC(C=C2)=C3C2=CC=CC3=C1 HXGDTGSAIMULJN-UHFFFAOYSA-N 0.000 description 1
- 150000008062 acetophenones Chemical class 0.000 description 1
- RDUAHLHDEOZCAA-UHFFFAOYSA-N acetyl chloride;toluene Chemical compound CC(Cl)=O.CC1=CC=CC=C1 RDUAHLHDEOZCAA-UHFFFAOYSA-N 0.000 description 1
- YRKCREAYFQTBPV-UHFFFAOYSA-N acetylacetone Natural products CC(=O)CC(C)=O YRKCREAYFQTBPV-UHFFFAOYSA-N 0.000 description 1
- 150000003926 acrylamides Chemical class 0.000 description 1
- 238000012644 addition polymerization Methods 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 125000001931 aliphatic group Chemical group 0.000 description 1
- JFCQEDHGNNZCLN-UHFFFAOYSA-N anhydrous glutaric acid Natural products OC(=O)CCCC(O)=O JFCQEDHGNNZCLN-UHFFFAOYSA-N 0.000 description 1
- 235000010323 ascorbic acid Nutrition 0.000 description 1
- 229960005070 ascorbic acid Drugs 0.000 description 1
- 239000011668 ascorbic acid Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 235000010233 benzoic acid Nutrition 0.000 description 1
- 150000008366 benzophenones Chemical class 0.000 description 1
- 235000019400 benzoyl peroxide Nutrition 0.000 description 1
- USFRYJRPHFMVBZ-UHFFFAOYSA-M benzyl(triphenyl)phosphanium;chloride Chemical compound [Cl-].C=1C=CC=CC=1[P+](C=1C=CC=CC=1)(C=1C=CC=CC=1)CC1=CC=CC=C1 USFRYJRPHFMVBZ-UHFFFAOYSA-M 0.000 description 1
- HIFVAOIJYDXIJG-UHFFFAOYSA-N benzylbenzene;isocyanic acid Chemical class N=C=O.N=C=O.C=1C=CC=CC=1CC1=CC=CC=C1 HIFVAOIJYDXIJG-UHFFFAOYSA-N 0.000 description 1
- VYHBFRJRBHMIQZ-UHFFFAOYSA-N bis[4-(diethylamino)phenyl]methanone Chemical compound C1=CC(N(CC)CC)=CC=C1C(=O)C1=CC=C(N(CC)CC)C=C1 VYHBFRJRBHMIQZ-UHFFFAOYSA-N 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- CDQSJQSWAWPGKG-UHFFFAOYSA-N butane-1,1-diol Chemical compound CCCC(O)O CDQSJQSWAWPGKG-UHFFFAOYSA-N 0.000 description 1
- KDYFGRWQOYBRFD-NUQCWPJISA-N butanedioic acid Chemical compound O[14C](=O)CC[14C](O)=O KDYFGRWQOYBRFD-NUQCWPJISA-N 0.000 description 1
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- DKVNPHBNOWQYFE-UHFFFAOYSA-N carbamodithioic acid Chemical compound NC(S)=S DKVNPHBNOWQYFE-UHFFFAOYSA-N 0.000 description 1
- 239000004918 carbon fiber reinforced polymer Substances 0.000 description 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- YACLQRRMGMJLJV-UHFFFAOYSA-N chloroprene Chemical compound ClC(=C)C=C YACLQRRMGMJLJV-UHFFFAOYSA-N 0.000 description 1
- 229940011182 cobalt acetate Drugs 0.000 description 1
- QAHREYKOYSIQPH-UHFFFAOYSA-L cobalt(II) acetate Chemical compound [Co+2].CC([O-])=O.CC([O-])=O QAHREYKOYSIQPH-UHFFFAOYSA-L 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 239000007822 coupling agent Substances 0.000 description 1
- 229930003836 cresol Natural products 0.000 description 1
- LDHQCZJRKDOVOX-NSCUHMNNSA-N crotonic acid Chemical compound C\C=C\C(O)=O LDHQCZJRKDOVOX-NSCUHMNNSA-N 0.000 description 1
- CISNNLXXANUBPI-UHFFFAOYSA-N cyano(nitro)azanide Chemical compound [O-][N+](=O)[N-]C#N CISNNLXXANUBPI-UHFFFAOYSA-N 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
- 239000012933 diacyl peroxide Substances 0.000 description 1
- 239000012973 diazabicyclooctane Substances 0.000 description 1
- JBSLOWBPDRZSMB-FPLPWBNLSA-N dibutyl (z)-but-2-enedioate Chemical compound CCCCOC(=O)\C=C/C(=O)OCCCC JBSLOWBPDRZSMB-FPLPWBNLSA-N 0.000 description 1
- JGFBRKRYDCGYKD-UHFFFAOYSA-N dibutyl(oxo)tin Chemical compound CCCC[Sn](=O)CCCC JGFBRKRYDCGYKD-UHFFFAOYSA-N 0.000 description 1
- 229960002097 dibutylsuccinate Drugs 0.000 description 1
- YPTLFOZCUOHVFO-SREVYHEPSA-N diethyl (z)-2-methylbut-2-enedioate Chemical compound CCOC(=O)\C=C(\C)C(=O)OCC YPTLFOZCUOHVFO-SREVYHEPSA-N 0.000 description 1
- GYZLOYUZLJXAJU-UHFFFAOYSA-N diglycidyl ether Chemical compound C1OC1COCC1CO1 GYZLOYUZLJXAJU-UHFFFAOYSA-N 0.000 description 1
- IEJIGPNLZYLLBP-UHFFFAOYSA-N dimethyl carbonate Chemical compound COC(=O)OC IEJIGPNLZYLLBP-UHFFFAOYSA-N 0.000 description 1
- XXBDWLFCJWSEKW-UHFFFAOYSA-N dimethylbenzylamine Chemical compound CN(C)CC1=CC=CC=C1 XXBDWLFCJWSEKW-UHFFFAOYSA-N 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 239000012990 dithiocarbamate Substances 0.000 description 1
- 125000003438 dodecyl 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])C([H])([H])C([H])([H])* 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000008393 encapsulating agent Substances 0.000 description 1
- 125000000816 ethylene group Chemical group [H]C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 235000011187 glycerol Nutrition 0.000 description 1
- IPCSVZSSVZVIGE-UHFFFAOYSA-M hexadecanoate Chemical compound CCCCCCCCCCCCCCCC([O-])=O IPCSVZSSVZVIGE-UHFFFAOYSA-M 0.000 description 1
- ACCCMOQWYVYDOT-UHFFFAOYSA-N hexane-1,1-diol Chemical compound CCCCCC(O)O ACCCMOQWYVYDOT-UHFFFAOYSA-N 0.000 description 1
- FUZZWVXGSFPDMH-UHFFFAOYSA-N hexanoic acid Chemical compound CCCCCC(O)=O FUZZWVXGSFPDMH-UHFFFAOYSA-N 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 239000011256 inorganic filler Substances 0.000 description 1
- 229910003475 inorganic filler Inorganic materials 0.000 description 1
- 239000011630 iodine Substances 0.000 description 1
- 229910052740 iodine Inorganic materials 0.000 description 1
- TYQCGQRIZGCHNB-JLAZNSOCSA-N l-ascorbic acid Chemical compound OC[C@H](O)[C@H]1OC(O)=C(O)C1=O TYQCGQRIZGCHNB-JLAZNSOCSA-N 0.000 description 1
- 239000011976 maleic acid Substances 0.000 description 1
- 229940071125 manganese acetate Drugs 0.000 description 1
- UOGMEBQRZBEZQT-UHFFFAOYSA-L manganese(2+);diacetate Chemical compound [Mn+2].CC([O-])=O.CC([O-])=O UOGMEBQRZBEZQT-UHFFFAOYSA-L 0.000 description 1
- 125000005395 methacrylic acid group Chemical group 0.000 description 1
- RBQRWNWVPQDTJJ-UHFFFAOYSA-N methacryloyloxyethyl isocyanate Chemical compound CC(=C)C(=O)OCCN=C=O RBQRWNWVPQDTJJ-UHFFFAOYSA-N 0.000 description 1
- 150000002762 monocarboxylic acid derivatives Chemical group 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
- 230000009965 odorless effect Effects 0.000 description 1
- 150000001451 organic peroxides Chemical class 0.000 description 1
- 125000005375 organosiloxane group Chemical group 0.000 description 1
- 235000006408 oxalic acid Nutrition 0.000 description 1
- 238000010525 oxidative degradation reaction Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- UWJJYHHHVWZFEP-UHFFFAOYSA-N pentane-1,1-diol Chemical compound CCCCC(O)O UWJJYHHHVWZFEP-UHFFFAOYSA-N 0.000 description 1
- 239000002530 phenolic antioxidant Substances 0.000 description 1
- KJFMBFZCATUALV-UHFFFAOYSA-N phenolphthalein Chemical compound C1=CC(O)=CC=C1C1(C=2C=CC(O)=CC=2)C2=CC=CC=C2C(=O)O1 KJFMBFZCATUALV-UHFFFAOYSA-N 0.000 description 1
- 125000000951 phenoxy group Chemical group [H]C1=C([H])C([H])=C(O*)C([H])=C1[H] 0.000 description 1
- AQSJGOWTSHOLKH-UHFFFAOYSA-N phosphite(3-) Chemical class [O-]P([O-])[O-] AQSJGOWTSHOLKH-UHFFFAOYSA-N 0.000 description 1
- OJMIONKXNSYLSR-UHFFFAOYSA-N phosphorous acid Chemical compound OP(O)O OJMIONKXNSYLSR-UHFFFAOYSA-N 0.000 description 1
- 150000003018 phosphorus compounds Chemical class 0.000 description 1
- 125000003386 piperidinyl group Chemical group 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 229920001483 poly(ethyl methacrylate) polymer Polymers 0.000 description 1
- 229920001748 polybutylene Polymers 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920005668 polycarbonate resin Polymers 0.000 description 1
- 239000004431 polycarbonate resin Substances 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 229920005749 polyurethane resin Polymers 0.000 description 1
- CBPYOHALYYGNOE-UHFFFAOYSA-M potassium;3,5-dinitrobenzoate Chemical compound [K+].[O-]C(=O)C1=CC([N+]([O-])=O)=CC([N+]([O-])=O)=C1 CBPYOHALYYGNOE-UHFFFAOYSA-M 0.000 description 1
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 238000007127 saponification reaction Methods 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 229940116351 sebacate Drugs 0.000 description 1
- CXMXRPHRNRROMY-UHFFFAOYSA-L sebacate(2-) Chemical compound [O-]C(=O)CCCCCCCCC([O-])=O CXMXRPHRNRROMY-UHFFFAOYSA-L 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 238000010186 staining Methods 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
- 239000001384 succinic acid Substances 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 238000001308 synthesis method Methods 0.000 description 1
- 239000004250 tert-Butylhydroquinone Substances 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
- 235000019281 tert-butylhydroquinone Nutrition 0.000 description 1
- 150000003512 tertiary amines Chemical class 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- AUHHYELHRWCWEZ-UHFFFAOYSA-N tetrachlorophthalic anhydride Chemical compound ClC1=C(Cl)C(Cl)=C2C(=O)OC(=O)C2=C1Cl AUHHYELHRWCWEZ-UHFFFAOYSA-N 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
- 239000013008 thixotropic agent Substances 0.000 description 1
- LDHQCZJRKDOVOX-UHFFFAOYSA-N trans-crotonic acid Natural products CC=CC(O)=O LDHQCZJRKDOVOX-UHFFFAOYSA-N 0.000 description 1
- 125000002889 tridecyl 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])[H] 0.000 description 1
- ZIBGPFATKBEMQZ-UHFFFAOYSA-N triethylene glycol Chemical compound OCCOCCOCCO ZIBGPFATKBEMQZ-UHFFFAOYSA-N 0.000 description 1
- LENZDBCJOHFCAS-UHFFFAOYSA-N tris Chemical compound OCC(N)(CO)CO LENZDBCJOHFCAS-UHFFFAOYSA-N 0.000 description 1
- 229960000281 trometamol Drugs 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 239000001993 wax Substances 0.000 description 1
- 239000004246 zinc acetate 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
- C08F290/067—Polyurethanes; Polyureas
-
- 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
- C08F283/00—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G
- C08F283/01—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G on to unsaturated polyesters
-
- 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
- C08F290/08—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
- C08F290/14—Polymers provided for in subclass C08G
- C08F290/144—Polymers containing more than one epoxy group per molecule
-
- 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
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/13—Phenols; Phenolates
- C08K5/134—Phenols containing ester groups
- C08K5/1345—Carboxylic esters of phenolcarboxylic acids
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/16—Nitrogen-containing compounds
- C08K5/34—Heterocyclic compounds having nitrogen in the ring
- C08K5/3412—Heterocyclic compounds having nitrogen in the ring having one nitrogen atom in the ring
- C08K5/3432—Six-membered rings
Definitions
- the present invention relates to radically polymerizable resin compositions.
- This application claims priority based on Japanese Patent Application No. 2021-101866 filed in Japan on June 18, 2021, the content of which is incorporated herein.
- Antioxidants protect plastics from this air oxidation.
- Antioxidants are radical chain reaction inhibitors that prevent the radicals generated by the air oxidation process from proceeding to the next chain process, and peroxides that decompose the peroxides generated during the air oxidation process and convert them into stable compounds. They are roughly classified into oxide decomposers. Radical chain reaction inhibitors include phenolic compounds and aromatic amine compounds. Examples of peroxide decomposers include sulfur-containing compounds and phosphites. Radical chain reaction inhibitors or peroxide decomposers alone are effective in protecting plastics from oxidative degradation.
- Non-Patent Document 1 describes that, as a radical chain reaction inhibitor, "amine compounds are rarely used for plastics because of their staining properties, and are mostly phenolic compounds.”
- Non-Patent Document 1 discloses an example in which various phenol-based antioxidants and sulfur-containing compounds or phosphite-based compounds are used in combination to solve the problems of changes in the strength and physical properties of plastics and appearance deterioration such as coloring. ing.
- phosphorus-based antioxidants and thioether-based antioxidants are particularly effective in stabilizing color tone. Furthermore, it can exhibit a synergistic effect with hindered phenolic antioxidants, and is widely used in plastic materials. However, when exposed to a high-temperature environment, the strength properties of plastics have not yet stabilized.
- Patent Document 1 Many studies have been reported on the thermal stabilization of plastics, and the use of organosiloxane and a hindered amine having a piperidine structure has been proposed for the purpose of thermal stabilization of epoxy resins (Patent Document 1). Also, for the purpose of thermally stabilizing polypropylene-based carbon fiber reinforced plastics, it has been proposed to use a polypropylene resin with controlled crystallinity, a phenol-based antioxidant, and a phosphorus-based antioxidant (Patent Document 2). Furthermore, it has been proposed to use a hindered phenol-based antioxidant and a thioether-based antioxidant for the purpose of stabilizing the UV-curable adhesive (Patent Document 3).
- Patent Document 4 Furthermore, in order to achieve both heat resistance and mechanical strength of polycarbonate resin, it has been proposed to use a hindered phenol-based antioxidant for aromatic polycarbonate (Patent Document 4). Furthermore, for the purpose of improving the heat resistance of polyurethane resins, it has been proposed to use polyols with specific hydroxyl values, inorganic fillers, and plasticizers (Patent Document 5).
- Patent Documents 1, 2, 3 and 4 do not provide a satisfactory solution to the strength stability of plastics.
- the present invention has been made to solve the above problems, and provides a radically polymerizable resin composition that has excellent heat resistance and exhibits little change in strength properties even when exposed to high-temperature environments for a long period of time.
- the purpose is to
- the content of the present disclosure includes the following embodiments [1] to [13].
- a radically polymerizable resin (A) contains at least one selected from the group consisting of urethane (meth)acrylate (A1), unsaturated polyester (A2), and epoxy (meth)acrylate (A3).
- the radically polymerizable resin (A) or the ethylenically unsaturated compound (B) is at least one selected from the group consisting of a polyalkyl ether-derived skeleton, a butadiene-derived skeleton, and an isoprene-derived skeleton.
- the hindered phenol compound (C) is at least one selected from the group consisting of tetrakis hindered phenol compounds, tris hindered phenol compounds, bis hindered phenol compounds, and mono hindered phenol compounds.
- the hindered amine compound (D) is at least one selected from the group consisting of tetrakis hindered amine compounds, tris hindered amine compounds, bis hindered amine compounds, mono hindered amine compounds, and (meth)acrylate hindered amine compounds.
- a radically polymerizable resin composition capable of suppressing changes in strength of the cured product due to exposure to high-temperature environments.
- (Meth)acrylic is a generic term for acrylic and methacrylic
- (meth)acrylate is a generic term for acrylate and methacrylate.
- Ethylenically unsaturated bond means a double bond formed between carbon atoms excluding carbon atoms forming an aromatic ring, and "ethylenically unsaturated compound” has an ethylenically unsaturated bond. means a compound.
- a radically polymerizable resin composition according to one embodiment of the present invention comprises a radically polymerizable resin (A), an ethylenically unsaturated compound (B), a hindered phenol compound (C) and a hindered amine compound (D).
- the radically polymerizable resin according to the present embodiment is not particularly limited as long as it is a resin (such as a polymer) in which a polymerization reaction proceeds with a radical polymerization initiator.
- the radically polymerizable resin (A) and the later-described ethylenically unsaturated compound (B) are collectively referred to as radically polymerizable components.
- the radically polymerizable resin (A) may be used singly or in combination of two or more.
- the radically polymerizable resin (A) preferably has at least one selected from the group consisting of a polyalkyl ether-derived skeleton, a butadiene-derived skeleton, and an isoprene-derived skeleton.
- a polyalkyl ether-derived skeleton a polyalkyl ether-derived skeleton
- a butadiene-derived skeleton a polyalkyl ether-derived skeleton
- an isoprene-derived skeleton skeletons derived from polyalkyl ethers, butadiene and isoprene are preferable, and skeletons derived from polyalkyl ethers and butadiene are particularly preferable in order to lower the elastic modulus of the cured resin and the temperature dependence of the elastic modulus.
- Examples of the radically polymerizable resin (A) include urethane (meth)acrylate (A1), unsaturated polyester (A2), and epoxy (meth)acrylate (A3).
- Urethane (meth)acrylate (A1) is a compound having a polyurethane structure and two or more (meth)acryloyloxy groups.
- a preferred urethane (meth)acrylate (A1) is represented by the following general formula (1).
- Urethane (meth)acrylate may be used individually by 1 type, and may use 2 or more types together.
- R 1 is H or CH 3 .
- R 2 is a divalent hydrocarbon group which may contain an ether bond, and a hydrogen atom may be substituted with a substituent.
- R3 is a divalent hydrocarbon group.
- R 4 is a structural unit derived from a polyester polyol, polyether polyol, or polyalkylene glycol having a number average molecular weight of 300-8,000.
- the number of repeating units, n is the number-based average value of all urethane (meth)acrylates contained in the radically polymerizable resin composition, and is a real number of 1.00 or more.
- R 1 is H or CH 3 , preferably CH 3 .
- R 2 is a divalent hydrocarbon group which may contain an ether bond, and a hydrogen atom may be substituted with a substituent. Ether linkages may be present on the main chain or on side chains. Examples of the divalent hydrocarbon group constituting R 2 include an alkylene group, a cycloalkylene group, and an arylene group, and these hydrocarbon groups may have a branch and may contain an ether bond. . R 2 is preferably an alkylene group having 2 to 6 carbon atoms.
- R 2 hydrogen atoms of an alkylene group having 2 to 6 carbon atoms may be substituted with a substituent such as a phenyl group, a phenoxy group, or a (meth)acryloyloxy group.
- R 2 is particularly preferably an ethylene group.
- R 1 and R 2 in general formula (1) above are structures derived from a hydroxyl group-containing (meth)acrylate represented by general formula (2) below.
- the hydroxyl group may be bonded to the terminal of R 2 or may be a side chain of R 2 .
- hydroxyl group-containing (meth)acrylates represented by the general formula (2) include 2-hydroxyethyl (meth)acrylate, 2-hydroxypropyl (meth)acrylate, 2-hydroxybutyl (meth)acrylate, phenoxyhydroxypropyl ( Mono (meth) acrylates such as meth) acrylate, dipropylene glycol mono (meth) acrylate, polyethylene glycol mono (meth) acrylate, polypropylene glycol mono (meth) acrylate; trimethylolpropane di (meth) acrylate, pentaerythritol tri ( Examples include polyvalent (meth)acrylates such as meth)acrylate.
- the hydroxyl group-containing (meth)acrylate represented by the general formula (2) may be used alone or in combination of two or more.
- the hydroxyl group-containing (meth)acrylate represented by the general formula (2) is preferably 2-hydroxyethyl acrylate, 2-hydroxyethyl methacrylate, 2-hydroxypropyl acrylate, 2-hydroxypropyl methacrylate, 2-hydroxybutyl acrylate. , or 2-hydroxybutyl methacrylate.
- the hydroxyl group-containing (meth)acrylate represented by the general formula (2) is more preferably 2-hydroxyethyl methacrylate, 2-hydroxypropyl acrylate, or 2-hydroxybutyl acrylate.
- the hydroxyl group-containing (meth)acrylate represented by the general formula (2) is more preferably 2-hydroxyethyl methacrylate.
- R 3 is a divalent hydrocarbon group.
- the number of carbon atoms contained in R 3 is preferably 5-15.
- the hydrocarbon group constituting R 3 includes an alkylene group, a cycloalkylene group and an arylene group, preferably a cycloalkylene group or an arylene group. A hydrogen atom of these groups may be substituted with an alkyl group.
- diisocyanate compound represented by the general formula (3) examples include isophorone diisocyanate, tolylene diisocyanate and its isomers or isomer mixtures, tolidine diisocyanate, diphenylmethane diisocyanate, hydrogenated diphenylmethane diisocyanate, naphthalene diisocyanate, hexamethylene diisocyanate, xyloxy Examples include diisocyanate and hydrogenated xylylene diisocyanate.
- the diisocyanate compound represented by the general formula (3) may be used alone or in combination of two or more.
- the diisocyanate compound represented by the general formula (3) is preferably isophorone diisocyanate, tolylene diisocyanate, diphenylmethane diisocyanate or hexamethylene diisocyanate, more preferably isophorone diisocyanate, tolylene diisocyanate or diphenylmethane diisocyanate.
- the compound represented by the general formula (4) is a polyester polyol, polyether polyol, or polyalkylene glycol having a number average molecular weight of 300 to 8,000.
- polyalkylene glycol having a number average molecular weight of 300 to 8,000 is preferable from the viewpoint of water resistance.
- Polyalkylene glycol is obtained, for example, by addition polymerization of alkylene oxide to alcohol.
- Polyalkylene glycol is selected from the group consisting of polyethylene glycol, polypropylene glycol, copolymers of ethylene glycol and propylene glycol (copolymers having ethylene oxide units and propylene oxide units), and polytetramethylene glycol (polybutylene glycol) is preferably at least one of
- the lower limit of the number average molecular weight of the compound represented by the general formula (4) is 600. This makes it possible to increase the tensile elongation of the urethane (meth)acrylate and improve the toughness of the resulting cured product. From this point of view, the number average molecular weight of HO--R 4 --OH is more preferably 1,000 or more, and even more preferably 2,000 or more.
- the upper limit of the number average molecular weight of the compound represented by the general formula (4) is preferably 8,000. Thereby, a molded product having sufficient strength can be obtained. From this point of view, the number average molecular weight of the compound represented by the general formula (4) is more preferably 7,000 or less, and even more preferably 6,000 or less.
- the number average molecular weight of the compound represented by the general formula (4) is defined in JIS K0070-1992 "Acid value, saponification value, ester value, iodine value, hydroxyl value and unsaponifiables of chemical products Test method”. First, the hydroxyl value of the compound represented by the general formula (4) is measured as follows.
- n is the average value of the number of repetitions of the constituent units in square brackets in general formula (1) above, and n is a real number of 1.00 or more.
- M2 is a value based on the number average molecular weight of the compound represented by the general formula (4).
- n is based on the number average molecular weight
- n is the number-based average value of all urethane (meth)acrylates, and is not limited to an integer.
- n is preferably 6.00 or less.
- the viscosity of the urethane (meth)acrylate is low and good workability can be ensured.
- the value of n is more preferably 5.00 or less, even more preferably 4.00 or less.
- Step 1 A step of reacting a diisocyanate compound represented by the general formula (3) with a compound represented by the general formula (4) to synthesize a molecule having isocyanato groups at both ends;
- Step 2 A step of reacting this molecule with a hydroxyl group-containing (meth)acrylate represented by the general formula (2).
- the diisocyanate compound is added in excess to the compound represented by the general formula (4), i.e., the NCO group/OH group molar ratio exceeds 1. addition is preferred.
- the unsaturated polyester (A2) is a polycondensate obtained by polycondensing a polyhydric alcohol, an unsaturated polybasic acid, and optionally at least one selected from saturated polybasic acids and monobasic acids. , is not particularly limited.
- An unsaturated polybasic acid is a polybasic acid having an ethylenically unsaturated bond
- a saturated polybasic acid is a polybasic acid having no ethylenically unsaturated bond.
- the unsaturated polyester may be used alone or in combination of two or more.
- Polyhydric alcohol is not particularly limited as long as it is a compound having two or more hydroxyl groups. Among them, ethylene glycol, propylene glycol, butanediol, diethylene glycol, dipropylene glycol, triethylene glycol, pentanediol, hexanediol, neopentanediol, tetraethylene glycol, polyethylene glycol, neopentyl glycol, 2-methyl-1,3- propanediol, 2,2-dimethyl-1,3-propanediol, 1,4-cyclohexanedimethanol, hydrogenated bisphenol A, bisphenol A, glycerin, ethylene oxide adduct of bisphenol A and propylene oxide adduct of bisphenol A preferable.
- ethylene glycol, propylene glycol, diethylene glycol, dipropylene glycol, neopentyl glycol, hydrogenated bisphenol A, ethylene oxide adducts of bisphenol A and propylene oxide adducts of bisphenol A are used from the viewpoint of water resistance and flexibility of cured products. More preferred.
- a polyhydric alcohol may be used individually and may use 2 or more types together.
- the unsaturated polybasic acid is not particularly limited as long as it is a compound having an ethylenically unsaturated bond and two or more carboxyl groups or an acid anhydride thereof.
- Examples include maleic acid, maleic anhydride, fumaric acid, citraconic acid, itaconic acid, and chloromaleic acid.
- maleic anhydride, fumaric acid, citraconic acid, itaconic acid and chloromaleic acid are preferable, and maleic anhydride and fumaric acid are more preferable, from the viewpoint of heat resistance and mechanical strength of the cured product.
- the unsaturated polybasic acids may be used alone or in combination of two or more.
- the saturated polybasic acid is not particularly limited as long as it is a compound having no ethylenically unsaturated bond and two or more carboxyl groups or its acid anhydride.
- halogenated phthalic anhydrides such as phthalic acid, phthalic anhydride, isophthalic acid, terephthalic acid, tetrachlorophthalic anhydride and tetrabromophthalic anhydride; and aromatic saturated polybasic acids or acid anhydrides thereof such as nitrophthalic acid; Aliphatic saturated polybasic acids such as succinic acid, adipic acid, sebacic acid, oxalic acid, malonic acid, azelaic acid, glutaric acid and hexahydrophthalic anhydride, or acid anhydrides thereof.
- phthalic acid, phthalic anhydride, isophthalic acid, terephthalic acid, succinic acid and adipic acid are preferable from the viewpoint of heat resistance and mechanical strength of the cured product, and phthalic anhydride, isophthalic acid, terephthalic acid and adipic acid are preferable. more preferred.
- Examples of monobasic acids include dicyclopentadiene malate, benzoic acid and its derivatives, and cinnamic acid and its derivatives, with dicyclopentadiene malate being preferred.
- Dicyclopentadiene maleate can be synthesized from maleic anhydride and dicyclopentadiene by a known method. By using a monobasic acid, the viscosity of the unsaturated polyester can be lowered, and the amount of the ethylenically unsaturated compound used can be reduced.
- the unsaturated polyester (A2) can be synthesized by a known method using the raw materials described above. Various conditions in the synthesis of the unsaturated polyester (A2) can be appropriately set according to the raw materials used and their amounts.
- the esterification reaction can be carried out at a temperature of 140 to 230° C. under pressure or under reduced pressure in an inert gas stream such as nitrogen gas.
- an esterification catalyst can be used as necessary. Examples of esterification catalysts include known catalysts such as manganese acetate, dibutyltin oxide, stannous oxalate, zinc acetate and cobalt acetate.
- the esterification catalyst may be used alone or in combination of two or more.
- the weight average molecular weight (Mw) of the unsaturated polyester (A2) is not particularly limited.
- the weight average molecular weight of the unsaturated polyester (A2) is preferably 2,000 to 25,000, more preferably 2,500 to 20,000, still more preferably 3,000 to 15,000. .
- Epoxy (meth)acrylate (A3) is a resin having a polymerizable unsaturated bond.
- Epoxy (meth)acrylate (A3) generally comprises an epoxy group in an epoxy resin having two or more epoxy groups, and a carboxy group of an unsaturated monobasic acid having a polymerizable unsaturated bond and a carboxy group. obtained by the ring-opening reaction of Such epoxy (meth)acrylate (A3) is described, for example, in Polyester Resin Handbook (Nikkan Kogyo Shimbun, 1988).
- the epoxy resin is not particularly limited as long as it has two or more epoxy groups.
- at least one selected from bisphenol type epoxy resins, hydrogenated bisphenol type epoxy resins, and novolak phenol type epoxy resins can be used.
- Such an epoxy resin can further improve the mechanical strength and corrosion resistance of the cured product.
- the bisphenol-type epoxy resin examples include compounds obtained by reacting a bisphenol compound such as bisphenol A, bisphenol F, bisphenol S, and tetrabromobisphenol A with epichlorohydrin or methylepichlorohydrin; any one of the above bisphenol compounds.
- a bisphenol compound such as bisphenol A, bisphenol F, bisphenol S, and tetrabromobisphenol A
- epichlorohydrin or methylepichlorohydrin any one of the above bisphenol compounds.
- hydrogenated bisphenol epoxy resin examples include glycidyl ether of hydrogenated bisphenol A, bisphenol compounds such as bisphenol A, bisphenol F, bisphenol S and tetrabromobisphenol A, and optionally epichlorohydrin or methylepichlorohydrin. Examples include those obtained by reaction.
- novolac phenol-type epoxy resin examples include those obtained by reacting phenol novolac or cresol novolac with epichlorohydrin or methyl epichlorohydrin.
- the unsaturated monobasic acid is not particularly limited as long as it is a monocarboxylic acid having a polymerizable unsaturated bond.
- it is preferably at least one selected from acrylic acid, methacrylic acid, crotonic acid, and cinnamic acid, more preferably acrylic acid or methacrylic acid, and particularly preferably methacrylic acid.
- Epoxy (meth)acrylates obtained by the reaction of methacrylic acid and epoxy resins have high hydrolysis resistance against acids and alkalis, and therefore can further improve the corrosion resistance of cured products.
- the amount of the unsaturated monobasic acid used in the ring-opening reaction of the epoxy resin and the unsaturated monobasic acid is preferably 0.3 to 1.5 equivalents with respect to 1 equivalent of the epoxy group of the epoxy resin. .4 to 1.2 equivalents are more preferred, and 0.5 to 1.0 equivalents are particularly preferred. If the amount of the unsaturated monobasic acid used is in the range of 0.3 to 1.5 equivalents with respect to 1 equivalent of the epoxy group of the epoxy resin, the radical polymerization reaction of the epoxy (meth)acrylate (A3) can sufficiently A cured product having hardness can be obtained.
- Epoxy (meth)acrylate (A3) can be synthesized by a known synthesis method. For example, in the presence of an esterification catalyst, an epoxy resin and an unsaturated monobasic acid are optionally dissolved in a solvent and reacted at 70 to 150°C, preferably 80 to 140°C, more preferably 90 to 130°C. method.
- esterification catalyst there are no particular restrictions on the esterification catalyst.
- tertiary amines such as triethylamine, N,N-dimethylbenzylamine, N,N-dimethylaniline or diazabicyclooctane
- phosphorus compounds such as triphenylphosphine, benzyltriphenylphosphonium chloride; or diethylamine hydrochloride.
- One or more known catalysts can be used.
- the radically polymerizable resin composition of this embodiment contains an ethylenically unsaturated compound (B).
- the ethylenically unsaturated compound (B) is a monomer compound having an ethylenically unsaturated group.
- the compound may have one or more ethylenically unsaturated groups.
- the ethylenically unsaturated compound (B) preferably has at least one selected from the group consisting of a polyalkyl ether-derived skeleton, a butadiene-derived skeleton, and an isoprene-derived skeleton.
- skeletons derived from polyalkyl ethers, butadiene and isoprene are preferable, and skeletons derived from polyalkyl ethers and butadiene are particularly preferable in order to lower the elastic modulus of the cured resin and the temperature dependence of the elastic modulus.
- ethylenically unsaturated compounds (B) include aromatic vinyl compounds, diene compounds, (meth)acrylates, (meth)acrylamides, unsaturated dicarboxylic acid diesters such as diethyl citraconate, and monomaleimides such as N-phenylmaleimide. compound, N-(meth)acryloylphthalimide, and the like.
- aromatic vinyl compound examples include styrene, ⁇ -, schreib-, m-, p-alkyl derivatives of styrene, nitro, cyano, amide or ester derivatives of styrene, methoxystyrene, divinylbenzene, vinylnaphthalene, acenaphthylene, and the like. mentioned.
- examples of the ⁇ -, schreib-, m-, and p-alkyl derivatives of styrene examples include vinyltoluene and t-butylstyrene.
- diene compound examples include butadiene, 2,3-dimethylbutadiene, isoprene, and chloroprene.
- Examples of the (meth)acrylates include methyl (meth)acrylate, ethyl (meth)acrylate, propyl (meth)acrylate, n-butyl (meth)acrylate, t-butyl (meth)acrylate, 2-ethylhexyl (meth)acrylate, isodecyl (meth)acrylate, lauryl (meth)acrylate, tridecyl (meth)acrylate, stearyl (meth)acrylate, cyclohexyl (meth)acrylate, furfuryl (meth)acrylate, tetrahydrofurfuryl (meth)acrylate, phenyl (meth)acrylate, Benzyl (meth)acrylate, phenoxyethyl (meth)acrylate, dicyclopentenyl (meth)acrylate, dicyclopentenyloxyethyl (meth)acrylate, allyl (meth)acrylate, isobornyl (
- Examples of the (meth)acrylamide include (meth)acrylamide, N,N'-dimethyl(meth)acrylamide, N,N'-diisopropyl(meth)acrylamide and the like.
- aromatic monomers and (meth)acrylic acid esters are preferred from the viewpoint of the physical properties and surface drying properties of the cured product.
- styrene, vinyl toluene, methyl (meth) acrylate, ethyl (meth) acrylate, propyl (meth) acrylate, phenyl (meth) acrylate, benzyl (meth) acrylate, phenoxyethyl (meth) acrylate, n-lauryl (Meth)acrylates are preferred, and styrene, vinyltoluene, methyl (meth)acrylate, benzyl (meth)acrylate, phenoxyethyl (meth)acrylate and n-lauryl (meth)acrylate are more preferred.
- the content of the ethylenically unsaturated compound (B) is 10 to 95% by mass, more preferably 20 to 90% by mass, and still more preferably 25 to 80% by mass, based on the total amount of the radically polymerizable components. . If the content of the ethylenically unsaturated compound (B) is 10 to 95% by mass with respect to the total amount of the radically polymerizable components, the mechanical strength of the cured product can be further enhanced.
- the hindered phenol compound (C) is not particularly limited as long as it is a compound having one or two tertiary butyl groups adjacent to the phenolic hydroxyl group.
- the hindered phenol compound (C) may be used singly or in combination of two or more.
- Examples of the hindered phenol compound (C) include tetrakis hindered phenol compounds, tris hindered phenol compounds, bis hindered phenol compounds, mono hindered phenol compounds, etc.
- Examples of the tetrakis hindered phenol compound include pentaerythritol. tetrakis[3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate] and the like.
- tris-hindered phenol compound examples include 1,3,5-tris(3,5-di-tert-butyl-4-hydroxybenzyl)-1,3,5-triazine-2,4,6(1H,3H ,5H)-trione, 4,4,4-(1-methylpropanyl-3-indene)tris(6-tert-butyl-m-cresol), 1,3,5-tris(3,5-di- tert-butyl-4-hydroxyphenylmethyl)-2,4,6-trimethylbenzene and the like.
- bis-hindered phenol compounds examples include 6,6-di-tert-butyl-4,4-butylidene-di-m-cresol, 3,9-bis ⁇ 2-[3-(3-tert-butyl-4 -hydroxy-5-methylphenyl)propionyloxy]-1,1-dimethylethyl ⁇ -2,4,8,10-tetraoxaspiro[5.5]undecane, 4,4-butylidenebis(6-tert-butyl- 3-methylphenol), thiodiethylenebis[3-(3,5-di-tert-butyl-4-hydroxy-phenyl)propionate], N,N-hexane-1,6-diylbis(3-(3,5 -di-tert-butyl-4-hydroxyphenylpropionamide)), ethylenebis(oxyethylene)bis-(3-(5-tert-butyl-4-hydroxy-m-toluyl)propionate), hex
- Examples of the monohindered phenol compound include octadodecyl-3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate and 3,5-bis(1,1-dimethyl-ethyl)benzenepropanoate. -4-hydroxy-alkyl ester, 4,6-bis(octylthiomethyl)-o-cresol, 2,6-di-tert-butyl-4-(4,6-bis(octylthio)-1,3,5 -triazin-2-ylamino)phenol.
- Tetrakis-hindered phenol compounds, tris-hindered phenol compounds, bis-hindered phenol compounds, and mono-hindered phenol compounds are preferred from the viewpoint of volatility resistance and oil resistance in high-temperature environments, and tetrakis-hindered phenol compounds and tris-hindered phenol compounds are preferred. compounds and bis-hindered phenol compounds are more preferred, and tetrakis-hindered phenol compounds and tris-hindered phenol compounds are even more preferred.
- the molecular weight is preferably 300-3000, more preferably 350-2500, even more preferably 400-2000.
- the "tris hindered phenol compound” and the "tetrakis hindered phenol compound” are compounds containing three and four hindered phenol groups in the molecule, respectively.
- the hindered phenol compound (C) is preferably 0.05 to 5.0 parts by mass with respect to a total of 100 parts by mass of the radically polymerizable resin (A) and the ethylenically unsaturated compound (B), and more Preferably 0.1 to 3.0 parts by mass. More preferably, it is 0.2 to 1.5 parts by mass. 4.
- the content is 0.05 parts by mass or more with respect to a total of 100 parts by mass of the radically polymerizable resin (A) and the ethylenically unsaturated compound (B)
- the stability of changes in physical properties in a high-temperature environment is good. If it is 0 mass part or less, it is possible to suppress bleed out.
- the hindered amine compound (D) is not particularly limited as long as it is a compound having an alkyl group adjacent to an amino group, but a compound having a polymethyl-4-piperidyl group is particularly preferred.
- the hindered amine compound (D) may be used singly or in combination of two or more.
- hindered amine compound (D) examples include tetrakis(1,2,2,6,6-pentamethyl-4-piperidyl)butane-1,2,34-tetracarboxylate, tetrakis(2,2,6,6- Tetrakis hindered amine compounds such as tetramethyl-4-piperidyl)butane-1,2,3,4-tetracarboxylate, tris hindered amine compounds such as trisamine, bis(1,2,2,6,6-pentamethyl-4-piperidyl) ) Bishindered amines such as sebacate, bis(2,2,6,6-tetramethyl-4-piperidyl) sebacate, bis(1-undecanoxy-2,2,6,6,-tetramethylpiperidin-4-yl) carbonate compounds, monohindered amine compounds such as 2,2,6,6-tetramethylpiperidin-4-yl-octadecanoate, 1,2,2,6,6-pentamethyl-4-piperid
- tetrakis hindered amine compounds, tris hindered amine compounds, bis hindered amine compounds, mono hindered amine compounds, and (meth)acrylate hindered amine compounds are preferred from the viewpoint of volatility resistance and oil resistance in high temperature environments, and tetrakis hindered amine compounds, tris hindered amine compounds, bis hindered amine compounds.
- compounds, (meth)acrylate hindered amine compounds are more preferred, and tetrakis hindered amine compounds, tris hindered amine compounds, and (meth)acrylate hindered amine compounds are even more preferred.
- tris hindered amine compound and “tetrakis hindered amine compound” are compounds containing three and four hindered amine groups in the molecule, respectively. Furthermore, from the viewpoint of compatibility with the radically polymerizable resin (A) and the ethylenically unsaturated compound (B), the molecular weight is preferably 100-3000, more preferably 150-2500, even more preferably 200-1500.
- the hindered amine compound (D) is preferably 0.05 to 5.0 parts by mass, more preferably 100 parts by mass in total of the radical polymerizable resin (A) and the ethylenically unsaturated compound (B). 0.1 to 3.0 parts by mass. More preferably, it is 0.2 to 1.5 parts by mass. 4.
- the content is 0.05 parts by mass or more with respect to a total of 100 parts by mass of the radically polymerizable resin (A) and the ethylenically unsaturated compound (B)
- the stability of changes in physical properties in a high-temperature environment is good. If it is 0 mass part or less, it is possible to suppress bleed out.
- the radically polymerizable resin composition may contain a curing agent (E).
- the amount (total amount) of the curing agent (E) added to the radically polymerizable resin composition is appropriately set according to the type of the radically polymerizable resin (A), the conditions of use of the radically polymerizable resin composition, the reaction conditions, and the like. be done. Generally, it is preferably 0.1 to 10 parts by mass, more preferably 0.15 to 8 parts by mass, with respect to the total of 100 parts by mass of the radically polymerizable resin (A) and the ethylenically unsaturated compound (B). parts, more preferably 0.2 to 5 parts by mass. Within such a range, the radical polymerization reaction is promoted, so that a cured product having a high degree of curing can be obtained in a short time.
- the curing agent (E) When the curing agent (E) is stored under conditions that do not initiate the radical polymerization reaction of the radically polymerizable resin (A), the curing agent (E) should be included in advance in the radically polymerizable resin composition from the viewpoint of work efficiency and the like. You can leave it.
- the type of the curing agent (E) is appropriately selected according to the type of the radically polymerizable resin (A), the conditions of use of the radically polymerizable resin composition, the reaction conditions, etc.
- a known thermal radical polymerization initiator (E1 ), a photoradical polymerization initiator (E2), and the like can be used. These may be used individually by 1 type, or may use 2 or more types together.
- thermal radical polymerization initiator (E1) examples include diacyl peroxides such as benzoyl peroxide; peroxyesters such as t-butyl peroxybenzoate; hydroperoxides such as cumene hydroperoxide; dialkyl peroxides; ketone peroxides such as methyl ethyl ketone peroxide and acetylacetone peroxide; peroxyketals; alkyl peresters; and organic peroxides such as percarbonates.
- diacyl peroxides such as benzoyl peroxide
- peroxyesters such as t-butyl peroxybenzoate
- hydroperoxides such as cumene hydroperoxide
- dialkyl peroxides ketone peroxides such as methyl ethyl ketone peroxide and acetylacetone peroxide
- peroxyketals alkyl peresters
- organic peroxides such as percarbonates.
- radical photopolymerization initiators (E2) include acetophenone-based, benzophenone-based, 1-phenyl-1,2-propanedione-2-(O-ethoxycarbonyl)oxime, and 1-phenyl-1,2-propanedione.
- acetophenone series examples include acetophenone, 2′-phenylacetophenone, 2,2-dimethoxy-2-phenylacetophenone, 2,2-diethoxyacetophenone, 4′-isopropyl-2-hydroxy-2-methylpropiophenone, 2 -hydroxy-2-methylpropiophenone, ⁇ , ⁇ -dichloroacetophenone and the like.
- benzophenone series examples include 4,4′-bis(diethylamino)benzophenone, methyl(orthobenzoyl)benzoate, and benzophenone.
- Examples of the benzoin ether series include benzoin methyl ether, benzoin ethyl ether, benzoin isopropyl ether, benzoin isobutyl ether, and benzoin octyl ether.
- Examples of the carbonyl compound include benzyl, benzyl dimethyl ketal, benzyl diethyl ketal, diacetyl and the like.
- Examples of the anthraquinone or thioxanthone derivatives include methylanthraquinone, chloroanthraquinone, 2-chlorothioxanthone, 2-methylthioxanthone and 2-isopropylthioxanthone.
- Examples of the sulfur compound include diphenyl disulfide and dithiocarbamate.
- hydroperoxides such as cumene hydroperoxide as the thermal radical polymerization initiator (E1); dialkyl peroxides such as dicumyl peroxide; More preferred are cumene hydroperoxide, dicumyl peroxide, acetophenone, 2′-phenylacetophenone, benzoin ether, bis(2,4,6-trimethylbenzoyl)phenylphosphine oxide, dicumyl peroxide, 2′-phenylacetophenone, More preferred is bis(2,4,6-trimethylbenzoyl)phenylphosphine oxide.
- the radically polymerizable resin composition may contain various additives (F) such as colorants, fibers, coupling agents, surfactants, waxes, thixotropic agents, etc., if necessary, depending on the intended use and application. .
- the content of the additive may be appropriately adjusted according to the desired physical properties of the cured product of the resin composition to be produced within a range that does not affect the curing performance and storage stability of the radically polymerizable resin composition. can be done.
- the total content of additives is preferably 0.1 to 700 parts by mass, more preferably 0.1 to 500 parts by mass, and still more preferably 0.1 to 700 parts by mass, based on 100 parts by mass of the radically polymerizable component. 1 to 300 parts by mass.
- the solvent (G) is used as necessary from the viewpoint of uniformly mixing each component in the radically polymerizable resin composition.
- the content thereof is not particularly limited, and can be appropriately adjusted depending on the handling properties during use.
- the type of the solvent (G) is appropriately selected according to the type of resin, intended use, etc. within a range that does not affect the curing performance and storage stability of the radically polymerizable resin composition. Examples thereof include aliphatic hydrocarbons, aromatic hydrocarbons, ethers, ketones, esters, chain carbonates and the like. These may be used individually by 1 type, or may use 2 or more types together.
- aliphatic hydrocarbons include mineral spirits such as cyclohexane, n-hexane, white spirits, and odorless mineral spirits.
- Aromatic hydrocarbons include naphthene, a mixture of naphthene and paraffin, benzene, toluene, quinoline, and the like.
- Ethers include diethyl ether, diisopropyl ether and the like.
- Ketones include acetone, methyl ethyl ketone, cyclohexanone, and the like.
- Esters include ethyl acetate, butyl acetate, diethyl malonate, diethyl succinate, dibutyl succinate, dibutyl maleate, 2,2,4-trimethylpentanediol diisobutyrate, mono- and diesters of ketoglutaric acid, pyruvate, palmitate, mono- and diesters of ascorbic acid, and the like.
- chain carbonates include dimethyl carbonate and diethyl carbonate.
- 1,2-dioximes, N-methylpyrrolidone, 1-ethyl-2-pyrrolidinone, N,N-dimethylformamide and the like can also be used.
- the solvent (G) may be contained in the products of commercially available radical polymerizable resin (A) and ethylenically unsaturated compound (B).
- the radically polymerizable resin composition is prepared, for example, by kneading the above components (A) to (D) and, if necessary, one or more of the above components (E) and (F).
- the kneading method is not particularly limited, and for example, a double-arm kneader, pressure kneader, planetary mixer, or the like can be used.
- the kneading temperature is preferably -10°C to 80°C, more preferably 0°C to 60°C, most preferably 20°C to 60°C. If the kneading temperature is ⁇ 10° C.
- the kneadability is further improved. If the kneading temperature is 80° C. or lower, the curing reaction during kneading of the radically polymerizable resin composition can be further suppressed.
- the kneading time can be appropriately selected according to each component and its ratio.
- a solvent may be used as appropriate from the viewpoint of uniformly mixing each compounding component.
- a cured product of the radically polymerizable resin composition can be obtained by curing the resin composition by a known method.
- a method for curing the radical polymerizable resin composition for example, when the thermal radical polymerization initiator (E1) is added, a method of curing at room temperature or by heating, and when the photoradical polymerization initiator (E2) is added , a method of curing by irradiation with active energy rays such as ultraviolet rays, and the like.
- the specific temperature range for room temperature and heating can be, for example, a temperature range of 15°C to 200°C.
- the radically polymerizable resin composition of the present embodiment can be used as a material (sealant) for sealing electrical and electronic components.
- the resin-encapsulated electrical and electronic components have excellent heat resistance, and even when exposed to a high-temperature environment for a long time, the cured product of the encapsulant Excellent properties can be exhibited with little change in strength physical properties.
- Examples 2-9, Comparative Examples 1-3 A radically polymerizable resin composition was obtained in the same manner as in Example 1 using the composition shown in Table 1 below.
- test piece A The radically polymerizable resin compositions obtained in Examples 1 to 9 and Comparative Examples 1 to 3 were each injected into a molding die having an inner diameter of 50 mm and a thickness of 2 mm. Next, the radically polymerizable resin composition was cured by irradiation with an LED-UV lamp (representative wavelength 365 nm, illuminance 150 mW/cm 2 ) for 5 minutes to obtain each test piece A.
- LED-UV lamp representedative wavelength 365 nm, illuminance 150 mW/cm 2
- test piece B The radically polymerizable resin compositions obtained in Examples 1 to 9 and Comparative Examples 1 to 3 were each injected into a mold having an inner diameter of 50 mm and a thickness of 6 mm. Then, the radically polymerizable resin composition was cured by irradiation with an LED-UV lamp (representative wavelength: 365 nm, illuminance: 150 mW/cm 2 ) for 5 minutes to obtain each test piece B.
- LED-UV lamp representedative wavelength: 365 nm, illuminance: 150 mW/cm 2
- test piece C The radically polymerizable resin compositions obtained in Examples 1 to 9 and Comparative Examples 1 to 3 were each injected into a molding die of 30 ⁇ 4 ⁇ 2 mm. Then, the radically polymerizable resin composition was cured by irradiation with an LED-UV lamp (representative wavelength: 365 nm, illuminance: 150 mW/cm 2 ) for 5 minutes to obtain each test piece C.
- an LED-UV lamp representedative wavelength: 365 nm, illuminance: 150 mW/cm 2
- test piece B (diameter 50 mm, height 6 mm) at 23° C. was measured according to JIS K6253 using a hardness tester (Asker rubber hardness tester A, manufactured by Kobunshi Keiki Co., Ltd.).
- the test piece B was placed in a constant temperature bath at 150°C in an air atmosphere for 240 hours. After 240 hours, the cured product was taken out and allowed to cool to room temperature. Hardness (final hardness) was measured in the same manner as initial hardness. From the initial hardness and the final hardness, the hardness change rate was calculated based on the following formula (I).
- Hardness change rate (%) [(final hardness - initial hardness) / initial hardness] x 100 (I)
- heat resistance was evaluated according to the following evaluation criteria.
- ⁇ Hardness change rate of less than ⁇ 5%
- ⁇ Hardness change rate of ⁇ 5% or more and less than ⁇ 10%
- ⁇ Hardness change rate of ⁇ 10% or more and less than ⁇ 20%
- ⁇ Hardness change rate of ⁇ 20% or more
- ⁇ Storage modulus> The storage elastic modulus (initial elastic modulus) (1.0 Hz) of the test piece C (30 mm ⁇ 4 mm ⁇ 2 mm) was measured using a dynamic viscoelasticity measuring machine (manufactured by UBM Co., Ltd., Rheogel-E4000). Measurement condition: Temperature: -50°C to 180°C Frequency: 1Hz Amplitude: 0.01% Tensile mode
- the test piece C was allowed to stand in a constant temperature bath under an air atmosphere of 150°C for 240 hours. After 240 hours, the cured product was taken out and allowed to cool to room temperature.
- the storage modulus (final modulus) (1.0 Hz) was measured in the same manner as the initial modulus. From the initial elastic modulus and the final elastic modulus, the elastic modulus change rate was calculated based on the following formula (II).
- Elastic modulus change rate (%) [(final elastic modulus - initial elastic modulus) / initial elastic modulus] ⁇ 100 (II) Based on the calculated rate of change in elastic modulus, heat resistance was evaluated according to the following evaluation criteria.
- Elastic modulus change rate is less than ⁇ 20% ⁇ : Elastic modulus change rate is ⁇ 20% or more and less than ⁇ 35% ⁇ : Elastic modulus change rate is ⁇ 35% or more and less than ⁇ 55% ⁇ : Elastic modulus change rate is ⁇ 55 % or more -: Measurement not possible (due to cracks)
- AO-60 Adekastab (registered trademark) AO-60, pentaerythritol tetrakis [3-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate], manufacturer: ADEKA Corporation, molecular weight: 1,178 AO-80: Adekastab® AO-80, 3,9-bis ⁇ 2-[3-(3-tert-butyl-4-hydroxy-5-methylphenyl)propionyloxy]-1,1-dimethylethyl ⁇ -2,4,8,10-tetraoxaspiro[5.5]undecane, manufacturer: ADEKA Corporation, molecular weight: 741 AO-40: Adekastab (registered trademark) AO-40, 6,6'-di-tert-butyl 4,4'-butylidene-di-m-cresol, manufacturer: ADEKA Corporation, molecular weight: 383
- LA-72 ADEKA STAB (registered trademark) LA-72, manufacturer: ADEKA Corporation, molecular weight: 509 (main component: bis(2,2,6,6-tetramethyl-4-piperidyl) sebacate)
- LA-52 ADEKA STAB (registered trademark) LA-52, tetrakis(1,2,2,6,6-pentamethyl-4-piperidyl)butane-1,2,3,4-tetracarboxylate, manufacturer: ADEKA Corporation , molecular weight: 847
- LA-82 ADEKA STAB (registered trademark) LA-82, 1,2,2,6,6-pentamethyl-4-piperidyl methacrylate, manufacturer: ADEKA Corporation, molecular weight: 239
- LA-77 ADEKA STAB (registered trademark) LA-77, bis(2,2,6,6-tetramethyl-4-piperidyl) sebacate, manufacturer: ADEKA Corporation, molecular weight: 481 B
- Example 1 to 2 and 4 to 9 cured products free from cracks and having excellent stability of flexibility and strength properties were obtained. These cured products are moderately soft at room temperature, and even when exposed to high temperatures for a long period of time, the rate of change in physical properties of flexibility and strength is small. Further, in Example 3, a cured product having no cracks and excellent stability of strength properties was obtained. Therefore, the cured products of these radically polymerizable resin compositions are considered to be plastic materials with excellent long-term thermal stability.
- Comparative Example 2 containing no hindered amine compound (D) Comparative Example 3 containing no hindered phenol compound (C)
- Long-term thermal stability is considered to be poor because cracks were generated by exposure to high temperature for a long time. From the comparison between the examples and the comparative examples, it was found that the radically polymerizable resin composition containing the specific hindered phenol compound (C) and the hindered amine compound (D) provides excellent long-term thermal stability. rice field.
- the reason why a plastic material having excellent long-term thermal stability can be obtained only from the cured product of the radically polymerizable resin composition in which the hindered phenol compound (C) and the hindered amine compound (D) are used in combination is that the hindered amine compound is a reducing agent. It is presumed that it acts on the oxidized form of the hindered phenol compound.
- the cured product of the radically polymerizable resin composition of the present invention has excellent long-term thermal stability, so it can be used for various purposes such as protection of electrical and electronic parts.
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Abstract
Description
本願は、2021年6月18日に、日本に出願された特願2021-101866号に基づき優先権を主張し、その内容をここに援用する。
[1] ラジカル重合性樹脂(A)と、
エチレン性不飽和化合物(B)と、
ヒンダードフェノール化合物(C)と、
ヒンダードアミン化合物(D)と
を含むことを特徴とするラジカル重合性樹脂組成物。
[2] 前記ラジカル重合性樹脂(A)がウレタン(メタ)アクリレート(A1)、不飽和ポリエステル(A2)、及びエポキシ(メタ)アクリレート(A3)からなる群より選択される少なくとも1種を含むことを特徴とする[1]に記載のラジカル重合性樹脂組成物。
[3] 前記ラジカル重合性樹脂(A)と前記エチレン性不飽和化合物(B)との合計100質量部に対して、
前記ヒンダードフェノール化合物(C)を0.05~5.0質量部、
前記ヒンダードアミン化合物(D)を0.05~5.0質量部
含むことを特徴とする[1]又は[2]に記載のラジカル重合性樹脂組成物。
[4] 前記ラジカル重合性樹脂(A)あるいは前記エチレン性不飽和化合物(B)は、ポリアルキルエーテル由来の骨格、ブタジエン由来の骨格、及びイソプレン由来の骨格からなる群から選択される少なくとも1種を有することを特徴とする[1]~[3]のいずれかに記載のラジカル重合性樹脂組成物。
[5] 前記ヒンダードフェノール化合物(C)は、テトラキスヒンダードフェノール化合物、トリスヒンダードフェノール化合物、ビスヒンダードフェノール化合物、及びモノヒンダードフェノール化合物からなる群から選択される少なくとも1種であることを特徴とする[1]~[4]のいずれかに記載のラジカル重合性樹脂組成物。
[6] 前記ヒンダードアミン化合物(D)は、テトラキスヒンダードアミン化合物、トリスヒンダードアミン化合物、ビスヒンダードアミン化合物、モノヒンダードアミン化合物、及び(メタ)アクリレートヒンダードアミン化合物からなる群から選択される少なくとも1種であることを特徴とする[1]~[5]のいずれかに記載のラジカル重合性樹脂組成物。
[7] 前記ヒンダードフェノール化合物(C)の分子量が300~3000であることを特徴とする[1]~[6]のいずれかに記載のラジカル重合性樹脂組成物。
[8] 前記ヒンダードアミン化合物(D)の分子量が100~3000であることを特徴とする[1]~[7]のいずれかに記載のラジカル重合性樹脂組成物。
[9] さらに硬化剤(E)を含む[1]~[8]のいずれかに記載のラジカル重合性樹脂組成物。
[10] 前記硬化剤(E)が光ラジカル重合開始剤である[9]に記載のラジカル重合性樹脂組成物。
[11] 電気電子部品封止用であることを特徴とする[1]~[10]のいずれかに記載のラジカル重合性樹脂組成物。
[12] [1]~[10]のいずれかに記載のラジカル重合性樹脂組成物を用いた封止材。
[13] [12]に記載の封止材を用いて樹脂封止された電気電子部品。
本発明の一実施形態に係るラジカル重合性樹脂組成は、ラジカル重合性樹脂(A)、エチレン性不飽和化合物(B)、ヒンダードフェノール化合物(C)及びヒンダードアミン化合物(D)を含むものである。
本実施形態に係るラジカル重合性樹脂は、ラジカル重合開始剤によって重合反応が進行する樹脂(ポリマー等)であれば、特に限定されない。本開示において、ラジカル重合性樹脂(A)、及び後述するエチレン性不飽和化合物(B)を総称してラジカル重合性成分と呼ぶ。ラジカル重合性樹脂(A)は、1種単独で使用してもよいし、2種以上を併用してもよい。ラジカル重合性樹脂(A)は、ポリアルキルエーテル由来の骨格、ブタジエン由来の骨格、及びイソプレン由来の骨格からなる群から選択される少なくとも1種を有することが好ましい。
なかでも樹脂硬化物の低弾性率化および弾性率の温度依存性を低くするためにポリアルキルエーテル、ブタジエン、イソプレン由来の骨格が好ましく、とくにポリアルキルエーテル、ブタジエン由来の骨格が好ましい。
ウレタン(メタ)アクリレート(A1)はポリウレタン構造と2個以上の(メタ)アクリロイルオキシを有する化合物である。好ましいウレタン(メタ)アクリレート(A1)は、下記一般式(1)で表される。ウレタン(メタ)アクリレートは1種単独で使用してもよいし、2種以上を併用してもよい。
水酸基価は、試料をピリジンに溶かし、塩化アセチル-トルエン溶液を加えて加熱し、冷却後、さらに煮沸し放冷後、指示薬としてフェノールフタレイン溶液を加え、水酸化カリウムエタノール溶液で滴定することにより求める。
そして、水酸基価を測定した後、その値を用いて、前記化合物の数平均分子量を算出した。
上記一般式(4)で表される化合物の数平均分子量=56.11(g/mol)×2×103/水酸基価
工程1:上記一般式(3)で表されるジイソシアネート化合物と、上記一般式(4)で表される化合物とを反応させ両末端にイソシアナト基を有する分子を合成する工程;
工程2:この分子に上記一般式(2)で表される水酸基含有(メタ)アクリレートを反応させる工程。
両末端にイソシアナト基を有する分子を合成する工程においては、ジイソシアネート化合物を上記一般式(4)で表される化合物に対して過剰に、すなわちNCO基/OH基のモル比が1を超えるように添加することが好ましい。
不飽和ポリエステル(A2)は、多価アルコールと不飽和多塩基酸と、必要に応じて飽和多塩基酸及び一塩基酸から選択される少なくとも一つとを重縮合させて得られる重縮合体であり、特に限定されない。不飽和多塩基酸とは、エチレン性不飽和結合を有する多塩基酸であり、飽和多塩基酸とは、エチレン性不飽和結合を有さない多塩基酸である。不飽和ポリエステルは、単独で使用してもよいし、2種以上を併用してもよい。
多価アルコールは、2個以上の水酸基を有する化合物であれば特に制限はない。中でも、エチレングリコール、プロピレングリコール、ブタンジオール、ジエチレングリコール、ジプロピレングリコール、トリエチレングリコール、ペンタンジオール、ヘキサンジオール、ネオペンタンジオール、テトラエチレングリコール、ポリエチレングリコール、ネオペンチルグリコール、2-メチル-1,3-プロパンジオール、2,2-ジメチル-1,3-プロパンジオール、1,4-シクロヘキサンジメタノール、水素化ビスフェノールA、ビスフェノールA、グリセリン、ビスフェノールAのエチレンオキサイド付加物及びビスフェノールAのプロピレンオキサイド付加物が好ましい。中でも、硬化物の耐水性および柔軟性の観点からエチレングリコール、プロピレングリコール、ジエチレングリコール、ジプロピレングリコール、ネオペンチルグリコール、水素化ビスフェノールA、ビスフェノールAのエチレンオキサイド付加物及びビスフェノールAのプロピレンオキサイド付加物がより好ましい。多価アルコールは、単独で使用してもよいし、2種以上を併用してもよい。
不飽和多塩基酸は、エチレン性不飽和結合を有し、かつ、2個以上のカルボキシ基を有する化合物又はその酸無水物であれば特に制限はない。例えば、マレイン酸、無水マレイン酸、フマル酸、シトラコン酸、イタコン酸、クロロマレイン酸等が挙げられる。中でも、硬化物の耐熱性及び機械的強度等の観点から、無水マレイン酸、フマル酸、シトラコン酸、イタコン酸及びクロロマレイン酸が好ましく、無水マレイン酸及びフマル酸がより好ましい。不飽和多塩基酸は、単独で使用してもよいし、2種以上を併用してもよい。
飽和多塩基酸は、エチレン性不飽和結合を有さず、かつ、2個以上のカルボキシ基を有する化合物又はその酸無水物であれば特に制限はない。例えば、フタル酸、無水フタル酸、イソフタル酸、テレフタル酸、テトラクロロ無水フタル酸及びテトラブロモ無水フタル酸等のハロゲン化無水フタル酸;並びにニトロフタル酸等の芳香族飽和多塩基酸又はその酸無水物;コハク酸、アジピン酸、セバシン酸、シュウ酸、マロン酸、アゼライン酸、グルタル酸及びヘキサヒドロ無水フタル酸等の脂肪族飽和多塩基酸又はその酸無水物が挙げられる。中でも、硬化物の耐熱性及び機械的強度等の観点から、フタル酸、無水フタル酸、イソフタル酸、テレフタル酸、コハク酸及びアジピン酸が好ましく、無水フタル酸、イソフタル酸、テレフタル酸及びアジピン酸がより好ましい。
一塩基酸としては、ジシクロペンタジエンマレート、安息香酸とその誘導体、桂皮酸とその誘導体が挙げられ、ジシクロペンタジエンマレートが好ましい。ジシクロペンタジエンマレートは、無水マレイン酸とジシクロペンタジエンから公知の方法によって合成可能である。一塩基酸を用いることで、不飽和ポリエステルの粘度を低下させることができ、エチレン性不飽和化合物の使用量を削減することができる。
エポキシ(メタ)アクリレート(A3)は、重合性不飽和結合を有する樹脂である。エポキシ(メタ)アクリレート(A3)は、一般的には、2個以上のエポキシ基を有するエポキシ樹脂中のエポキシ基と、重合性不飽和結合及びカルボキシ基を有する不飽和一塩基酸のカルボキシ基との開環反応によって得られる。このようなエポキシ(メタ)アクリレート(A3)は、例えば、ポリエステル樹脂ハンドブック(日刊工業新聞、1988年発行)等に記載されている。
前記エポキシ樹脂は、2個以上のエポキシ基を有する樹脂であれば特に制限はない。例えば、ビスフェノール型エポキシ樹脂、水素化ビスフェノール型エポキシ樹脂、及びノボラックフェノール型エポキシ樹脂から選択される少なくとも一種を使用することができる。このようなエポキシ樹脂は、硬化物の機械的強度及び耐食性をより向上させることができる。
前記不飽和一塩基酸としては、重合性不飽和結合を有するモノカルボン酸であれば、特に制限はない。例えば、アクリル酸、メタクリル酸、クロトン酸、及び桂皮酸から選択される少なくとも一種であることが好ましく、アクリル酸又はメタクリル酸であることがより好ましく、メタクリル酸が特に好ましい。メタクリル酸とエポキシ樹脂との反応により得られるエポキシ(メタ)アクリレートは、酸及びアルカリに対する高い耐加水分解性を有するため、硬化物の耐食性をより向上させることができる。
エポキシ(メタ)アクリレート(A3)は、公知の合成方法により合成することができる。例えば、エステル化触媒の存在下、エポキシ樹脂及び不飽和一塩基酸を必要に応じて溶剤に溶解させて、70~150℃、好ましくは80~140℃、さらに好ましくは90~130℃で反応させる方法が挙げられる。
本実施形態のラジカル重合性樹脂組成物は、エチレン性不飽和化合物(B)を含む。エチレン性不飽和化合物(B)は、エチレン性不飽和基を有するモノマー化合物である。化合物中のエチレン性不飽和基は1つでも複数でもよい。エチレン性不飽和化合物(B)は、ポリアルキルエーテル由来の骨格、ブタジエン由来の骨格、及びイソプレン由来の骨格からなる群から選択される少なくとも1種を有することが好ましい。
なかでも樹脂硬化物の低弾性率化および弾性率の温度依存性を低くするためにポリアルキルエーテル、ブタジエン、イソプレン由来の骨格が好ましく、とくにポリアルキルエーテル、ブタジエン由来の骨格が好ましい。
エチレン性不飽和化合物(B)の例としては、芳香族ビニル化合物、ジエン化合物、(メタ)アクリレート、(メタ)アクリルアミド、シトラコン酸ジエチル等の不飽和ジカルボン酸ジエステル、N-フェニルマレイミド等のモノマレイミド化合物、N-(メタ)アクリロイルフタルイミド等が挙げられる。
上記芳香族ビニル化合物としては、スチレン、スチレンのα-、о-、m-、p-アルキル誘導体、スチレンのニトロ、シアノ、アミド、又はエステル誘導体、メトキシスチレン、ジビニルベンゼン、ビニルナフタレン、アセナフチレン等が挙げられる。また、上記スチレンのα-、о-、m-、p-アルキル誘導体の例としては、ビニルトルエン、t-ブチルスチレン等が挙げられる。
上記ジエン化合物としては、ブタジエン、2,3-ジメチルブタジエン、イソプレン、クロロプレン等が挙げられる。
上記(メタ)アクリレートとしては、メチル(メタ)アクリレート、エチル(メタ)アクリレート、プロピル(メタ)アクリレート、n-ブチル(メタ)アクリレート、t-ブチル(メタ)アクリレート、2-エチルヘキシル(メタ)アクリレート、イソデシル(メタ)アクリレート、ラウリル(メタ)アクリレート、トリデシル(メタ)アクリレート、ステアリル(メタ)アクリレート、シクロヘキシル(メタ)アクリレート、フルフリル(メタ)アクリレート、テトラヒドロフルフリル(メタ)アクリレート、フェニル(メタ)アクリレート、ベンジル(メタ)アクリレート、フェノキシエチル(メタ)アクリレート、ジシクロペンテニル(メタ)アクリレート、ジシクロペンテニルオキシエチル(メタ)アクリレート、アリル(メタ)アクリレート、イソボルニル(メタ)アクリレート、エチレングリコールジ(メタ)アクリレート、ジエチレングリコールジ(メタ)アクリレート、プロピレングリコールジ(メタ)アクリレート、ネオペンチルグリコールジ(メタ)アクリレート、トリシクロデカノールジ(メタ)アクリレート、トリメチロールプロパントリ(メタ)アクリレート等が挙げられる。
上記(メタ)アクリルアミドとしては、(メタ)アクリルアミド、N,N’-ジメチル(メタ)アクリルアミド、N,N’-ジイソプロピル(メタ)アクリルアミド等が挙げられる。
上記エチレン性不飽和化合物(B)の例中でも、硬化物の物性及び表面乾燥性の観点から、芳香族単量体、(メタ)アクリル酸エステルが好ましい。具体的には、スチレン、ビニルトルエン、メチル(メタ)アクリレート、エチル(メタ)アクリレート、プロピル(メタ)アクリレート、フェニル(メタ)アクリレート、ベンジル(メタ)アクリレート、フェノキシエチル(メタ)アクリレート、n-ラウリル(メタ)アクリレートが好ましく、スチレン、ビニルトルエン、メチル(メタ)アクリレート、ベンジル(メタ)アクリレート、フェノキシエチル(メタ)アクリレート、n-ラウリル(メタ)アクリレートがより好ましい。
ヒンダードフェノール化合物(C)は、フェノール性水酸基の隣接位にターシャリーブチル基を1つあるいは2つ有する化合物であれば、特に限定されない。ヒンダードフェノール化合物(C)は、1種単独で使用してもよいし、2種以上を併用してもよい。
上記テトラキスヒンダードフェノール化合物としては、ペンタエリスリトールテトラキス[3-(3,5-ジ-tert-ブチル-4-ヒドロキシフェニル)プロピオネート]等が挙げられる。
上記トリスヒンダードフェノール化合物としては、1,3,5-トリス(3,5-ジ-tert-ブチル-4-ヒドロキシベンジル)-1,3,5-トリアジン-2,4,6(1H,3H,5H)-トリオン、4,4、4-(1-メチルプロパニル-3-インデン)トリス(6-tert-ブチル-m-クレゾール)、1,3,5-トリス(3,5-ジ-tert-ブチル-4-ヒドロキシフェニルメチル)-2,4,6-トリメチルベンゼン等が挙げられる。
上記ビスヒンダードフェノール化合物としては、6,6-ジ-tert-ブチル-4,4-ブチリデン-ジ-m-クレゾール、3,9-ビス{2-[3-(3-tert-ブチル-4-ヒドロキシ-5-メチルフェニル)プロピオニルオキシ]-1,1-ジメチルエチル}-2,4,8,10-テトラオキサスピロ[5.5]ウンデカン、4,4-ブチリデンビス(6-tert-ブチル-3-メチルフェノール)、チオジエチレンビス[3-(3,5-ジ-tert-ブチル-4-ヒドロキシ-フェニル)プロピオネート]、N、N-ヘキサン-1,6-ジイルビス(3-(3,5-ジ-tert-ブチル-4-ヒドロキシフェニルプロピオンアミド))、エチレンビス(オキシエチレン)ビス-(3-(5-tert-ブチル-4-ヒドロキシ-m-トルイル)プロピオネート)、ヘキサメチレンビス(3-(3,5-ジ-tert-ブチル-4-ヒドロキシフェニル)プロピオネート)等が挙げられる。
上記モノヒンダードフェノール化合物としては、オクタドデシル-3-(3,5-ジ-tert-ブチル-4-ヒドロキシフェニル)プロピオネート、ベンゼンプロパノン酸3,5-ビス(1,1-ジメチル-エチル)-4-ヒドロキシ-アルキルエステル、4,6-ビス(オクチルチオメチル)-o-クレゾール、2,6-ジ-tert-ブチル-4-(4,6-ビス(オクチルチオ)-1,3,5-トリアジン-2-イルアミノ)フェノールの等が挙げられる。
さらに、ラジカル重合性樹脂(A)ならびにエチレン性不飽和化合物(B)との相溶性の観点から、分子量は300~3000が好ましく、350~2500がより好ましく、400~2000がさらに好ましい。
なお、上記「トリスヒンダードフェノール化合物」、「テトラキスヒンダードフェノール化合物」は、分子内にヒンダードフェノール基をそれぞれ3つ、4つ含む化合物である。
ヒンダードアミン化合物(D)は、アミノ基の隣接位にアルキル基を有する化合物であれば、特に限定されないが、特にポリメチル-4-ピペリジル基を有する化合物が好ましい。ヒンダードアミン化合物(D)は、1種単独で使用してもよいし、2種以上を併用してもよい。
なお、上記「トリスヒンダードアミン化合物」、「テトラキスヒンダードアミン化合物」は、分子内にヒンダードアミン基をそれぞれ3つ、4つ含む化合物である。
さらに、ラジカル重合性樹脂(A)ならびにエチレン性不飽和化合物(B)との相溶性の観点から、分子量は100~3000が好ましく、150~2500がより好ましく、200~1500がさらに好ましい。
ラジカル重合性樹脂組成物は、硬化剤(E)を含んでもよい。ラジカル重合性樹脂組成物に対する硬化剤(E)の添加量(合計量)は、ラジカル重合性樹脂(A)の種類や該ラジカル重合性樹脂組成物の使用条件、反応条件等に応じて適宜設定される。通常、ラジカル重合性樹脂(A)とエチレン性不飽和化合物(B)の合計100質量部に対して、0.1~10質量部であることが好ましく、より好ましくは、0.15~8質量部、さらに好ましくは、0.2~5質量部である。このような範囲であれば、ラジカル重合反応が促進されるため、短時間で高い硬化度を有する硬化物を得ることができる。
上記アセトフェノン系としては、アセトフェノン、2’-フェニルアセトフェノン、2,2-ジメトキシ-2-フェニルアセトフェノン、2,2-ジエトキシアセトフェノン、4’-イソプロピル-2-ヒドロキシ-2-メチルプロピオフェノン、2-ヒドロキシ-2-メチルプロピオフェノン、α,α-ジクロロアセトフェノン等挙げられる。
上記ベンゾフェノン系としては、4,4'-ビス(ジエチルアミノ)ベンゾフェノン、メチル(オルソベンゾイル)ベンゾエート、ベンゾフェノン等挙げられる。
上記ベンゾインエーテル系としては、ベンゾインメチルエーテル、ベンゾインエチルエーテル、ベンゾインイソプロピルエーテル、ベンゾインイソブチルエーテル、ベンゾインオクチルエーテル等挙げられる。
上記カルボニル化合物としては、ベンジル、ベンジルジメチルケタール、ベンジルジエチルケタール、ジアセチル等挙げられる。
上記アントラキノン又はチオキサントン誘導体としては、メチルアントラキノン、クロロアントラキノン、2-クロロチオキサントン、2-メチルチオキサントン、2-イソプロピルチオキサントン等挙げられる。
上記硫黄化合物としては、ジフェニルジスルフィド、ジチオカーバメート等が挙げられる。
ラジカル重合性樹脂組成物は、使用目的や用途等に応じて、必要により、着色剤、繊維、カップリング剤、界面活性剤、ワックス、揺変剤等の各種添加剤(F)を含んでもよい。
溶剤(G)は、ラジカル重合性樹脂組成物中の各含有成分を均一に混合する観点から、必要に応じて用いられるものである。その含有量は、特に限定されるものではなく、使用時の取り扱い性等に応じて適宜調整することができる。溶剤(G)の種類は、樹脂の種類や使用用途等に応じて、ラジカル重合性樹脂組成物の硬化性能及び保存安定性に影響を及ぼさない範囲内で適宜選択されるものである。例えば、脂肪族炭化水素、芳香族炭化水素、エーテル、ケトン、エステル、鎖状炭酸エステル等が挙げられる。これらは、1種単独で用いても、2種以上を併用してもよい。
ラジカル重合性樹脂組成物は、例えば、上記(A)~(D)の各成分と、必要に応じて、上記(E)、及び(F)の各成分の1つ又は複数とを混練する方法より製造することができる。混練方法としては特に制限はなく、例えば、双腕式ニーダー、加圧式ニーダー、プラネタリーミキサー等を用いることができる。混練温度は-10℃~80℃が好ましく、より好ましくは0℃~60℃であり、最も好ましくは20℃~60℃である。混練温度が-10℃以上であれば、混練性がより向上する。混練温度が80℃以下であれば、ラジカル重合性樹脂組成物の混練中の硬化反応をより抑制することができる。混練時間は各成分及びその比率に応じて適宜選択することができる。
ラジカル重合性樹脂組成物の硬化物は、該樹脂組成物を公知の方法で硬化させることにより得ることができる。ラジカル重合性樹脂組成物の硬化方法としては、例えば、熱ラジカル重合開始剤(E1)を添加した場合は、常温下若しくは加熱により硬化させる方法、光ラジカル重合開始剤(E2)を添加した場合は、紫外線等の活性エネルギー線照射により硬化させる方法等が挙げられる。ここで、常温及び加熱の具体的な温度範囲としては、例えば、15℃~200℃の温度範囲とすることができる。
本実施形態のラジカル重合性樹脂組成物は、電気電子部品封止用の材料(封止材)として用いることができる。本実施形態のラジカル重合性樹脂組成物を用いれば、樹脂封止された電気電子部品は、耐熱性に優れ長時間高温環境下に曝された場合であっても、封止材の硬化物について強度物性の変化の少なく、優れた特性を示すことができる。
(合成例1)
「ウレタン(メタ)アクリレート UAc-1」
撹拌機、還流冷却管、温度計、ガス導入管を付したフラスコに、ジフェニルメタンジイソシアネート500g、ポリプロピレングリコール(数平均分子量1,002)1002g、ハイドロキノン0.53gおよびジブチル錫ラウレート0.11gを仕込み加熱撹拌しながら75℃にて1時間反応させた。その後、2-ヒドロキシエチルメタクリレート273gを仕込み、加熱撹拌しながら80℃にて3時間反応させ、本実施形態のウレタン(メタ)アクリレート(A1)として、ウレタン(メタ)アクリレート UAc-1を得た。
「ウレタン(メタ)アクリレート UAc-2」
撹拌機、還流冷却管、温度計、ガス導入管を付したフラスコに、水酸基末端ポリブタジエン(Poly bd(登録商標)、出光)752.4g、2-イソシアナトエチルメタクリレート47.3g、ハイドロキノン0.24gおよびジブチル錫ラウレート0.05gを仕込み、加熱撹拌しながら80℃にて3時間反応させ、本実施形態のウレタン(メタ)アクリレート(A1)として、ウレタン(メタ)アクリレート UAc-2を得た。
「不飽和ポリエステル UPE」
撹拌機、還流冷却管、温度計、ガス導入管を付したフラスコにプロピレングリコール191g、ジエチレングリコール164g、イソフタル酸64g、及びテレフタル酸64gを仕込み、加熱撹拌しながら215℃で5時間反応させた後、120℃まで冷却した。そこへ無水マレイン酸189g、及びtert-ブチルハイドロキノン0.04gを仕込み、加熱撹拌しながら215℃で反応させ、酸価が20mgKOH/gになった時点で冷却し、ハイドロキノン0.05g、ナフテン酸銅0.02gを仕込み、本実施形態の不飽和ポリエステル(A2)として、不飽和ポリエステル UPEを得た。
「エポキシ(メタ)アクリレート EAc」
撹拌機、還流冷却器、温度計、ガス導入管を付したフラスコにビスフェノールA型エポキシ樹脂(EPICLON(登録商標)840、DIC社)534g、メタクリル酸64g、トリエチルアミン2.1g、ハイドロキノン0.2gを仕込み、空気を吹き込みながら120℃で反応させ酸価が5mgKOH/g以下になった時点で冷却し、本実施形態のエポキシ(メタ)アクリレート(A3)として、エポキシ(メタ)アクリレート EAcを得た。
(実施例1)
上記合成例1で得られたウレタン(メタ)アクリレートUAc-1 60g(60質量部)、フェノキシエチルメタクリレート30g(30質量部)、ラウリルメタクリレート10g(10質量部)、アデカスタブ(登録商標)AO-60(ペンタエリスリトールテトラキス[3-(3,5-ジ-tert-ブチル-4-ヒドロキシフェニル)プロピオネート]) 0.5g(0.5質量部)、アデカスタブ(登録商標)LA-72(主成分:ビス(1,2,2,6,6-ペンタメチル-4-ピペリジル)セバケート) 0.3g(0.3質量部)およびベンジルジメチルケタール0.3g(0.3質量部)を加え、25℃で撹拌混合することでラジカル重合性樹脂組成物を得た。
下記表1に示した配合組成で、実施例1と同様にして、ラジカル重合性樹脂組成物を得た。
内径50mm、厚さ2mmの成形用型に実施例1~9及び比較例1~3で得られたラジカル重合性樹脂組成物をそれぞれ注入した。次いで該ラジカル重合性樹脂組成物を、LED-UVランプ(代表波長365nm、照度150mW/cm2)にて5分間照射することで硬化させ、それぞれの試験片Aを得た。
内径50mm、厚さ6mmの成形用型に実施例1~9及び比較例1~3得られたラジカル重合性樹脂組成物をそれぞれ注入した。次いで該ラジカル重合性樹脂組成物を、LED-UVランプ(代表波長365nm、照度150mW/cm2)にて5分間照射することで硬化させ、それぞれの試験片Bを得た。
30×4×2mmの成形用型に実施例1~9及び比較例1~3得られたラジカル重合性樹脂組成物をそれぞれ注入した。次いで該ラジカル重合性樹脂組成物を、LED-UVランプ(代表波長365nm、照度150mW/cm2)にて5分間照射することで硬化させ、それぞれの試験片Cを得た。
<クラック>
試験片A(直径50mm、高さ2mm)を、150℃空気雰囲気下の恒温槽に240時間静置した。240時間後、硬化物を取り出し、室温になるまで放冷した。その後、硬化物を目視でクラックの有無を確認した。下記評価基準に従ってクラックを評価した。
×:クラック有り
試験片B(直径50mm、高さ6mm)の23℃における硬度(初期硬度)をJIS K6253に従い、硬度計(高分子計器株式会社製、アスカーゴム硬度計A型)を用いて測定した。
○:硬度変化率が±5%以上±10%未満
△:硬度変化率が±10%以上±20%未満
×:硬度変化率が±20%以上
試験片C(30mm×4mm×2mm)の貯蔵弾性率(初期弾性率)(1.0Hz)を動的粘弾性測定機(株式会社ユービーエム製、Rheogel-E4000)を用いて測定した。
測定条件:
温度:-50℃~180℃
周波数:1Hz
振幅:0.01%
引張モード
算出された弾性率変化率に基づいて、下記評価基準に従って耐熱性を評価した。
○:弾性率変化率が±20%以上±35%未満
△:弾性率変化率が±35%以上±55%未満
×:弾性率変化率が±55%以上
-:測定不可(クラックが生じた為)
(ラジカル重合性樹脂(A))
UAc-1:合成例1で得られたウレタン(メタ)アクリレート(A-1)
UAc-2:合成例2で得られたウレタン(メタ)アクリレート(A-1)
UPE:合成例3で得られた不飽和ポリエステル(A-2)
EAc:合成例4で得られたエポキシ(メタ)アクリレート(A-3)
(エチレン性不飽和化合物(B))
PEMA:フェノキシエチルメタクリレート(ライトエステルPO)、メーカ:共栄社化学株式会社
LMA:ラウリルメタクリレート(ライトエステルL)、メーカ:共栄社化学株式会社
ST:スチレン、メーカ:NSスチレンモノマー株式会社
AO-60:アデカスタブ(登録商標)AO-60、ペンタエリスリトールテトラキス[3-(3,5-ジ-tert-ブチル-4-ヒドロキシフェニル)プロピオネート]、メーカ:株式会社ADEKA、分子量:1,178
AO-80:アデカスタブ(登録商標)AO-80、3,9-ビス{2-[3-(3-tert-ブチル-4-ヒドロキシ-5-メチルフェニル)プロピオニルオキシ]-1,1-ジメチルエチル}-2,4,8,10-テトラオキサスピロ[5.5]ウンデカン、メーカ:株式会社ADEKA、分子量:741
AO-40:アデカスタブ(登録商標)AO-40、6,6‘-ジ-tert-ブチル4,4’-ブチリデン-ジ-m-クレゾール、メーカ:株式会社ADEKA、分子量:383
LA-72:アデカスタブ(登録商標)LA-72、メーカ:株式会社ADEKA、分子量:509(主成分:ビス(2,2,6,6-テトラメチル-4-ピペリジル)セバケート)
LA-52:アデカスタブ(登録商標)LA-52、テトラキス(1,2,2,6,6-ペンタメチル-4-ピペリジル)ブタン-1,2,3,4-テトラカルボキシレート、メーカ:株式会社ADEKA、分子量:847
LA-82:アデカスタブ(登録商標)LA-82、1,2,2,6,6-ペンタメチル-4-ピペリジルメタクリレート、メーカ:株式会社ADEKA、分子量:239
LA-77:アデカスタブ(登録商標)LA-77、ビス(2,2,6,6-テトラメチル-4-ピペリジル)セバケート、メーカ:株式会社ADEKA、分子量:481
BDMK:ベンジルジメチルケタール、メーカ:東京化成工業株式会社
一方、ヒンダードフェノール化合物(C)およびヒンダードアミン化合物(D)を含まない比較例1、ヒンダードアミン化合物(D)を含まない比較例2、ヒンダードフェノール化合物(C)を含まない比較例3はいずれも長時間高温に曝すことでクラックが発生したことから長期熱安定性に乏しいと考えられる。
実施例と比較例との対比から、ラジカル重合性樹脂組成物が特定のヒンダードフェノール化合物(C)とヒンダードアミン化合物(D)を含有することで、優れた長期熱安定性が得られることが分かった。
Claims (13)
- ラジカル重合性樹脂(A)と、
エチレン性不飽和化合物(B)と、
ヒンダードフェノール化合物(C)と、
ヒンダードアミン化合物(D)と
を含むことを特徴とするラジカル重合性樹脂組成物。 - 前記ラジカル重合性樹脂(A)がウレタン(メタ)アクリレート(A1)、不飽和ポリエステル(A2)、及びエポキシ(メタ)アクリレート(A3)からなる群より選択される少なくとも1種を含むことを特徴とする請求項1に記載のラジカル重合性樹脂組成物。
- 前記ラジカル重合性樹脂(A)と前記エチレン性不飽和化合物(B)との合計100質量部に対して、
前記ヒンダードフェノール化合物(C)を0.05~5.0質量部、
前記ヒンダードアミン化合物(D)を0.05~5.0質量部
含むことを特徴とする請求項1又は2に記載のラジカル重合性樹脂組成物。 - 前記ラジカル重合性樹脂(A)あるいは前記エチレン性不飽和化合物(B)は、ポリアルキルエーテル由来の骨格、ブタジエン由来の骨格、及びイソプレン由来の骨格からなる群から選択される少なくとも1種を有することを特徴とする請求項1又は2に記載のラジカル重合性樹脂組成物。
- 前記ヒンダードフェノール化合物(C)は、テトラキスヒンダードフェノール化合物、トリスヒンダードフェノール化合物、ビスヒンダードフェノール化合物、及びモノヒンダードフェノール化合物からなる群から選択される少なくとも1種であることを特徴とする請求項1又は2に記載のラジカル重合性樹脂組成物。
- 前記ヒンダードアミン化合物(D)は、テトラキスヒンダードアミン化合物、トリスヒンダードアミン化合物、ビスヒンダードアミン化合物、モノヒンダードアミン化合物、及び(メタ)アクリレートヒンダードアミン化合物からなる群から選択される少なくとも1種であることを特徴とする請求項1又は2に記載のラジカル重合性樹脂組成物。
- 前記ヒンダードフェノール化合物(C)の分子量が300~3000であることを特徴とする請求項1又は2に記載のラジカル重合性樹脂組成物。
- 前記ヒンダードアミン化合物(D)の分子量が100~3000であることを特徴とする請求項1又は2に記載のラジカル重合性樹脂組成物。
- さらに硬化剤(E)を含む請求項1又は2に記載のラジカル重合性樹脂組成物。
- 前記硬化剤(E)が光ラジカル重合開始剤である請求項9に記載のラジカル重合性樹脂組成物。
- 電気電子部品封止用であることを特徴とする請求項1又は2に記載のラジカル重合性樹脂組成物。
- 請求項1又は2に記載のラジカル重合性樹脂組成物を用いた封止材。
- 請求項12に記載の封止材を用いて樹脂封止された電気電子部品。
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