JP2009167383A - 2液反応型ポリウレタン樹脂組成物及び該樹脂組成物を用いた電気電子部品 - Google Patents
2液反応型ポリウレタン樹脂組成物及び該樹脂組成物を用いた電気電子部品 Download PDFInfo
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- JP2009167383A JP2009167383A JP2008248654A JP2008248654A JP2009167383A JP 2009167383 A JP2009167383 A JP 2009167383A JP 2008248654 A JP2008248654 A JP 2008248654A JP 2008248654 A JP2008248654 A JP 2008248654A JP 2009167383 A JP2009167383 A JP 2009167383A
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- polyurethane resin
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- 229920005749 polyurethane resin Polymers 0.000 title claims abstract description 51
- 239000011342 resin composition Substances 0.000 title claims abstract description 34
- 238000006757 chemical reactions by type Methods 0.000 title claims abstract 4
- 229920005862 polyol Polymers 0.000 claims abstract description 52
- 150000003077 polyols Chemical class 0.000 claims abstract description 51
- 239000004359 castor oil Substances 0.000 claims abstract description 17
- 235000019438 castor oil Nutrition 0.000 claims abstract description 17
- ZEMPKEQAKRGZGQ-XOQCFJPHSA-N glycerol triricinoleate Natural products CCCCCC[C@@H](O)CC=CCCCCCCCC(=O)OC[C@@H](COC(=O)CCCCCCCC=CC[C@@H](O)CCCCCC)OC(=O)CCCCCCCC=CC[C@H](O)CCCCCC ZEMPKEQAKRGZGQ-XOQCFJPHSA-N 0.000 claims abstract description 17
- 239000011256 inorganic filler Substances 0.000 claims abstract description 17
- 229910003475 inorganic filler Inorganic materials 0.000 claims abstract description 17
- 239000012948 isocyanate Substances 0.000 claims abstract description 10
- 229920001195 polyisoprene Polymers 0.000 claims abstract description 10
- 150000002513 isocyanates Chemical class 0.000 claims abstract description 9
- -1 phosphate ester Chemical class 0.000 claims description 12
- 229910019142 PO4 Inorganic materials 0.000 claims description 11
- 239000010452 phosphate Substances 0.000 claims description 11
- 239000000203 mixture Substances 0.000 claims description 5
- 239000004014 plasticizer Substances 0.000 claims description 5
- 150000003014 phosphoric acid esters Chemical class 0.000 claims description 4
- 125000004432 carbon atom Chemical group C* 0.000 claims description 3
- 125000005702 oxyalkylene group Chemical group 0.000 claims description 2
- 150000002430 hydrocarbons Chemical group 0.000 claims 1
- 239000007788 liquid Substances 0.000 claims 1
- 150000002148 esters Chemical class 0.000 abstract description 3
- 230000017525 heat dissipation Effects 0.000 description 13
- 239000005056 polyisocyanate Substances 0.000 description 13
- 229920001228 polyisocyanate Polymers 0.000 description 13
- 238000002156 mixing Methods 0.000 description 10
- DLYUQMMRRRQYAE-UHFFFAOYSA-N tetraphosphorus decaoxide Chemical compound O1P(O2)(=O)OP3(=O)OP1(=O)OP2(=O)O3 DLYUQMMRRRQYAE-UHFFFAOYSA-N 0.000 description 10
- 125000002947 alkylene group Chemical group 0.000 description 9
- 230000000052 comparative effect Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 239000002245 particle Substances 0.000 description 6
- 229940087291 tridecyl alcohol Drugs 0.000 description 6
- XFRVVPUIAFSTFO-UHFFFAOYSA-N 1-Tridecanol Chemical compound CCCCCCCCCCCCCO XFRVVPUIAFSTFO-UHFFFAOYSA-N 0.000 description 5
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 5
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 4
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- FKTHNVSLHLHISI-UHFFFAOYSA-N 1,2-bis(isocyanatomethyl)benzene Chemical class O=C=NCC1=CC=CC=C1CN=C=O FKTHNVSLHLHISI-UHFFFAOYSA-N 0.000 description 3
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 description 3
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 235000014113 dietary fatty acids Nutrition 0.000 description 3
- 125000005442 diisocyanate group Chemical group 0.000 description 3
- LQZZUXJYWNFBMV-UHFFFAOYSA-N dodecan-1-ol Chemical compound CCCCCCCCCCCCO LQZZUXJYWNFBMV-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000011156 evaluation Methods 0.000 description 3
- 239000000194 fatty acid Substances 0.000 description 3
- 229930195729 fatty acid Natural products 0.000 description 3
- 150000004665 fatty acids Chemical class 0.000 description 3
- 229910052740 iodine Inorganic materials 0.000 description 3
- 239000011630 iodine Substances 0.000 description 3
- 239000007858 starting material Substances 0.000 description 3
- 238000006467 substitution reaction Methods 0.000 description 3
- 238000003786 synthesis reaction Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 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 2
- 229910052582 BN Inorganic materials 0.000 description 2
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- 239000005062 Polybutadiene Substances 0.000 description 2
- GOOHAUXETOMSMM-UHFFFAOYSA-N Propylene oxide Chemical compound CC1CO1 GOOHAUXETOMSMM-UHFFFAOYSA-N 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 239000007795 chemical reaction product Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 description 2
- IQPQWNKOIGAROB-UHFFFAOYSA-N isocyanate group Chemical group [N-]=C=O IQPQWNKOIGAROB-UHFFFAOYSA-N 0.000 description 2
- 239000000395 magnesium oxide Substances 0.000 description 2
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 2
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 229920002857 polybutadiene Polymers 0.000 description 2
- 229920002635 polyurethane Polymers 0.000 description 2
- 239000004814 polyurethane Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 150000005846 sugar alcohols Polymers 0.000 description 2
- 238000005809 transesterification reaction Methods 0.000 description 2
- UFTFJSFQGQCHQW-UHFFFAOYSA-N triformin Chemical compound O=COCC(OC=O)COC=O UFTFJSFQGQCHQW-UHFFFAOYSA-N 0.000 description 2
- JNELGWHKGNBSMD-UHFFFAOYSA-N xanthone Chemical compound C1=CC=C2C(=O)C3=CC=CC=C3OC2=C1 JNELGWHKGNBSMD-UHFFFAOYSA-N 0.000 description 2
- GFNDFCFPJQPVQL-UHFFFAOYSA-N 1,12-diisocyanatododecane Chemical compound O=C=NCCCCCCCCCCCCN=C=O GFNDFCFPJQPVQL-UHFFFAOYSA-N 0.000 description 1
- VGHSXKTVMPXHNG-UHFFFAOYSA-N 1,3-diisocyanatobenzene Chemical compound O=C=NC1=CC=CC(N=C=O)=C1 VGHSXKTVMPXHNG-UHFFFAOYSA-N 0.000 description 1
- ALQLPWJFHRMHIU-UHFFFAOYSA-N 1,4-diisocyanatobenzene Chemical compound O=C=NC1=CC=C(N=C=O)C=C1 ALQLPWJFHRMHIU-UHFFFAOYSA-N 0.000 description 1
- OVBFMUAFNIIQAL-UHFFFAOYSA-N 1,4-diisocyanatobutane Chemical compound O=C=NCCCCN=C=O OVBFMUAFNIIQAL-UHFFFAOYSA-N 0.000 description 1
- CDMDQYCEEKCBGR-UHFFFAOYSA-N 1,4-diisocyanatocyclohexane Chemical compound O=C=NC1CCC(N=C=O)CC1 CDMDQYCEEKCBGR-UHFFFAOYSA-N 0.000 description 1
- SBJCUZQNHOLYMD-UHFFFAOYSA-N 1,5-Naphthalene diisocyanate Chemical compound C1=CC=C2C(N=C=O)=CC=CC2=C1N=C=O SBJCUZQNHOLYMD-UHFFFAOYSA-N 0.000 description 1
- AHBNSOZREBSAMG-UHFFFAOYSA-N 1,5-diisocyanato-2-methylpentane Chemical compound O=C=NCC(C)CCCN=C=O AHBNSOZREBSAMG-UHFFFAOYSA-N 0.000 description 1
- ATOUXIOKEJWULN-UHFFFAOYSA-N 1,6-diisocyanato-2,2,4-trimethylhexane Chemical compound O=C=NCCC(C)CC(C)(C)CN=C=O ATOUXIOKEJWULN-UHFFFAOYSA-N 0.000 description 1
- VZXPHDGHQXLXJC-UHFFFAOYSA-N 1,6-diisocyanato-5,6-dimethylheptane Chemical compound O=C=NC(C)(C)C(C)CCCCN=C=O VZXPHDGHQXLXJC-UHFFFAOYSA-N 0.000 description 1
- LFSYUSUFCBOHGU-UHFFFAOYSA-N 1-isocyanato-2-[(4-isocyanatophenyl)methyl]benzene Chemical compound C1=CC(N=C=O)=CC=C1CC1=CC=CC=C1N=C=O LFSYUSUFCBOHGU-UHFFFAOYSA-N 0.000 description 1
- GPZYYYGYCRFPBU-UHFFFAOYSA-N 6-Hydroxyflavone Chemical compound C=1C(=O)C2=CC(O)=CC=C2OC=1C1=CC=CC=C1 GPZYYYGYCRFPBU-UHFFFAOYSA-N 0.000 description 1
- 0 CC(*C(C)(C)O*)C(C)(C)C(C)(C)**C(C)(N)P(*)(O)=O Chemical compound CC(*C(C)(C)O*)C(C)(C)C(C)(C)**C(C)(N)P(*)(O)=O 0.000 description 1
- MQIUGAXCHLFZKX-UHFFFAOYSA-N Di-n-octyl phthalate Natural products CCCCCCCCOC(=O)C1=CC=CC=C1C(=O)OCCCCCCCC MQIUGAXCHLFZKX-UHFFFAOYSA-N 0.000 description 1
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- 239000005057 Hexamethylene diisocyanate Substances 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 239000005058 Isophorone diisocyanate Substances 0.000 description 1
- 239000004721 Polyphenylene oxide Substances 0.000 description 1
- 239000006087 Silane Coupling Agent Substances 0.000 description 1
- YSMRWXYRXBRSND-UHFFFAOYSA-N TOTP Chemical compound CC1=CC=CC=C1OP(=O)(OC=1C(=CC=CC=1)C)OC1=CC=CC=C1C YSMRWXYRXBRSND-UHFFFAOYSA-N 0.000 description 1
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical class OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 description 1
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 1
- 229940121375 antifungal agent Drugs 0.000 description 1
- 239000003429 antifungal agent Substances 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- BJQHLKABXJIVAM-UHFFFAOYSA-N bis(2-ethylhexyl) phthalate Chemical compound CCCCC(CC)COC(=O)C1=CC=CC=C1C(=O)OCC(CC)CCCC BJQHLKABXJIVAM-UHFFFAOYSA-N 0.000 description 1
- ZFMQKOWCDKKBIF-UHFFFAOYSA-N bis(3,5-difluorophenyl)phosphane Chemical compound FC1=CC(F)=CC(PC=2C=C(F)C=C(F)C=2)=C1 ZFMQKOWCDKKBIF-UHFFFAOYSA-N 0.000 description 1
- BEWFIPLBFJGWSR-UHFFFAOYSA-N butyl 12-acetyloxyoctadec-9-enoate Chemical compound CCCCCCC(OC(C)=O)CC=CCCCCCCCC(=O)OCCCC BEWFIPLBFJGWSR-UHFFFAOYSA-N 0.000 description 1
- 150000001718 carbodiimides Chemical class 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- HBGGXOJOCNVPFY-UHFFFAOYSA-N diisononyl phthalate Chemical compound CC(C)CCCCCCOC(=O)C1=CC=CC=C1C(=O)OCCCCCCC(C)C HBGGXOJOCNVPFY-UHFFFAOYSA-N 0.000 description 1
- QQVHEQUEHCEAKS-UHFFFAOYSA-N diundecyl benzene-1,2-dicarboxylate Chemical compound CCCCCCCCCCCOC(=O)C1=CC=CC=C1C(=O)OCCCCCCCCCCC QQVHEQUEHCEAKS-UHFFFAOYSA-N 0.000 description 1
- 238000005886 esterification reaction Methods 0.000 description 1
- 239000003925 fat Substances 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- RRAMGCGOFNQTLD-UHFFFAOYSA-N hexamethylene diisocyanate Chemical compound O=C=NCCCCCCN=C=O RRAMGCGOFNQTLD-UHFFFAOYSA-N 0.000 description 1
- 125000001183 hydrocarbyl group Chemical group 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 238000005984 hydrogenation reaction Methods 0.000 description 1
- 239000003230 hygroscopic agent Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- NIMLQBUJDJZYEJ-UHFFFAOYSA-N isophorone diisocyanate Chemical compound CC1(C)CC(N=C=O)CC(C)(CN=C=O)C1 NIMLQBUJDJZYEJ-UHFFFAOYSA-N 0.000 description 1
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 description 1
- 239000000347 magnesium hydroxide Substances 0.000 description 1
- 229910001862 magnesium hydroxide Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- AYLRODJJLADBOB-QMMMGPOBSA-N methyl (2s)-2,6-diisocyanatohexanoate Chemical compound COC(=O)[C@@H](N=C=O)CCCCN=C=O AYLRODJJLADBOB-QMMMGPOBSA-N 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 125000005498 phthalate group Chemical class 0.000 description 1
- 229920001281 polyalkylene Polymers 0.000 description 1
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- 239000000047 product Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
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- WBHHMMIMDMUBKC-QJWNTBNXSA-M ricinoleate Chemical compound CCCCCC[C@@H](O)C\C=C/CCCCCCCC([O-])=O WBHHMMIMDMUBKC-QJWNTBNXSA-M 0.000 description 1
- 229940066675 ricinoleate Drugs 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- DVKJHBMWWAPEIU-UHFFFAOYSA-N toluene 2,4-diisocyanate Chemical compound CC1=CC=C(N=C=O)C=C1N=C=O DVKJHBMWWAPEIU-UHFFFAOYSA-N 0.000 description 1
- KOWVWXQNQNCRRS-UHFFFAOYSA-N tris(2,4-dimethylphenyl) phosphate Chemical compound CC1=CC(C)=CC=C1OP(=O)(OC=1C(=CC(C)=CC=1)C)OC1=CC=C(C)C=C1C KOWVWXQNQNCRRS-UHFFFAOYSA-N 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Landscapes
- Polyurethanes Or Polyureas (AREA)
- Organic Insulating Materials (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
【解決手段】
(I)ポリオール成分と(II)イソシアネート成分とからなる2液反応型ポリウレタン樹脂組成物であって、(I)ポリオール成分が、(A)水添ポリイソプレンポリオールと、(B)ひまし油系ポリオールと、(C)一般式(1)で表されるリン酸エステルと、(D)無機充填材とを含有している2液反応型ポリウレタン樹脂組成物である。
【選択図】 なし
Description
ラウリルアルコールを出発物質とし、プロピレンオキサイド2モルおよびエチレンオキサイド8モルを公知の方法でブロック付加して、ラウリルアルコールのアルキレンオキサイド付加物を得た。
トリデシルアルコールを出発物質とし、エチレンオキサイド10モルを公知の方法を用いて付加して、トリデシルアルコールのアルキレンオキサイド付加物Aを得た。
トリデシルアルコールを出発物質とし、エチレンオキサイド7モルを公知の方法を用いて付加して、トリデシルアルコールのアルキレンオキサイド付加物Bを得た。
表2に示す配合により、各実施例及び各比較例のポリウレタン樹脂組成物を調製した。調製に際しては、表2に示す成分のうち、(II)ポリイソシアネート成分を除く成分を減圧下で混合し、この混合物に(II)ポリイソシアネート成分を加えることにより、各実施例及び各比較例のポリウレタン樹脂組成物を得た。
上記ポリウレタン樹脂組成物を用いてポリウレタン樹脂の試験片を作製し、評価試験を行った。ポリウレタン樹脂試験片は、上記ポリウレタン樹脂組成物を6cm×12cm×1cmの金型に流し込み、80℃×16時間養生した後、これを脱型することにより作製した。
(I)ポリオール成分の粘度は、BH型粘度計を用いて25℃で測定した。
硬度(タイプA及びタイプD)は、JIS K6253に従って測定した。
熱伝導率は、上記の方法で作製した6cm×12cm×1cmのポリウレタン樹脂を25℃で24時間静置し、熱伝導率計(京都電子工業(株)製、QTM−D3)を用いてプローブ法にて測定した。
実施例1〜8から分かるように、本発明の2液反応型ポリウレタン樹脂組成物は、ポリオールが使用可能な粘度であり、しかも優れた熱伝導率と耐熱性とを有していることが分かる。
Claims (6)
- (I)ポリオール成分と(II)イソシアネート成分とからなる2液反応型ポリウレタン樹脂組成物であって、
(I)ポリオール成分が、
(A)水添ポリイソプレンポリオールと、
(B)ひまし油系ポリオールと、
(C)一般式(1)で表されるリン酸エステルと、
(D)無機充填材と
を含有していることを特徴とする2液反応型ポリウレタン樹脂組成物。
- (I)ポリオール成分と(II)イソシアネート成分との総量を100重量%とした場合に、(C)一般式(1)で表されるリン酸エステルを0.01〜5重量%含有してなる請求項1記載の2液反応型ポリウレタン樹脂組成物。
- (I)ポリオール成分と(II)イソシアネート成分の総量を100重量%とした場合に、(D)無機充填材を50〜95重量%含有することを特徴とする請求項1又は2に記載の2液反応型ポリウレタン樹脂組成物。
- さらに、(E)可塑剤を含有することを特徴とする請求項1乃至3の何れかに記載の2液反応型ポリウレタン樹脂組成物。
- 電気電子部品用であることを特徴とする請求項1乃至4の何れかに記載の2液反応型ポリウレタン樹脂組成物。
- 請求項1乃至5の何れかに記載の2液反応型ポリウレタン樹脂組成物を用いて製造された電気電子部品。
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JP2008248654A JP5102732B2 (ja) | 2007-12-18 | 2008-09-26 | 2液反応型ポリウレタン樹脂組成物及び該樹脂組成物を用いた電気電子部品 |
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JP2009167383A true JP2009167383A (ja) | 2009-07-30 |
JP5102732B2 JP5102732B2 (ja) | 2012-12-19 |
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JP2008248654A Active JP5102732B2 (ja) | 2007-12-18 | 2008-09-26 | 2液反応型ポリウレタン樹脂組成物及び該樹脂組成物を用いた電気電子部品 |
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Cited By (3)
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KR101787616B1 (ko) * | 2015-05-08 | 2017-10-18 | 산유 레크 가부시키가이샤 | 폴리우레탄 수지 조성물 제조용 폴리올 조성물 |
KR102493723B1 (ko) * | 2021-11-02 | 2023-01-31 | 퓨어만 주식회사 | 전자파 차폐 방열 접착시트 |
WO2023055082A1 (ko) * | 2021-09-28 | 2023-04-06 | 주식회사 엘지화학 | 경화성 조성물 |
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WO2023055082A1 (ko) * | 2021-09-28 | 2023-04-06 | 주식회사 엘지화학 | 경화성 조성물 |
KR102493723B1 (ko) * | 2021-11-02 | 2023-01-31 | 퓨어만 주식회사 | 전자파 차폐 방열 접착시트 |
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