WO2022230768A1 - エポキシ樹脂硬化性組成物およびそれを含む接着剤 - Google Patents
エポキシ樹脂硬化性組成物およびそれを含む接着剤 Download PDFInfo
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- WO2022230768A1 WO2022230768A1 PCT/JP2022/018542 JP2022018542W WO2022230768A1 WO 2022230768 A1 WO2022230768 A1 WO 2022230768A1 JP 2022018542 W JP2022018542 W JP 2022018542W WO 2022230768 A1 WO2022230768 A1 WO 2022230768A1
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- WIPO (PCT)
- Prior art keywords
- epoxy resin
- curable composition
- group
- thiol compound
- thiol
- Prior art date
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- 239000003822 epoxy resin Substances 0.000 title claims abstract description 122
- 229920000647 polyepoxide Polymers 0.000 title claims abstract description 122
- 239000000203 mixture Substances 0.000 title claims abstract description 97
- 239000000853 adhesive Substances 0.000 title claims description 32
- 230000001070 adhesive effect Effects 0.000 title claims description 32
- -1 amine compound Chemical class 0.000 claims abstract description 84
- 229940126062 Compound A Drugs 0.000 claims abstract description 41
- NLDMNSXOCDLTTB-UHFFFAOYSA-N Heterophylliin A Natural products O1C2COC(=O)C3=CC(O)=C(O)C(O)=C3C3=C(O)C(O)=C(O)C=C3C(=O)OC2C(OC(=O)C=2C=C(O)C(O)=C(O)C=2)C(O)C1OC(=O)C1=CC(O)=C(O)C(O)=C1 NLDMNSXOCDLTTB-UHFFFAOYSA-N 0.000 claims abstract description 41
- 125000003396 thiol group Chemical class [H]S* 0.000 claims abstract description 39
- 125000003700 epoxy group Chemical group 0.000 claims abstract description 21
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 claims abstract description 11
- 125000000467 secondary amino group Chemical group [H]N([*:1])[*:2] 0.000 claims abstract description 11
- 125000004432 carbon atom Chemical group C* 0.000 claims description 50
- 125000002947 alkylene group Chemical group 0.000 claims description 31
- 125000000217 alkyl group Chemical group 0.000 claims description 12
- 125000002768 hydroxyalkyl group Chemical group 0.000 claims description 12
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 11
- 229910052799 carbon Inorganic materials 0.000 claims description 10
- 125000002915 carbonyl group Chemical group [*:2]C([*:1])=O 0.000 claims description 6
- 150000003573 thiols Chemical class 0.000 description 33
- 150000001412 amines Chemical class 0.000 description 16
- 230000000052 comparative effect Effects 0.000 description 13
- 238000000034 method Methods 0.000 description 10
- SUVIGLJNEAMWEG-UHFFFAOYSA-N propane-1-thiol Chemical compound CCCS SUVIGLJNEAMWEG-UHFFFAOYSA-N 0.000 description 10
- VILCJCGEZXAXTO-UHFFFAOYSA-N 2,2,2-tetramine Chemical compound NCCNCCNCCN VILCJCGEZXAXTO-UHFFFAOYSA-N 0.000 description 8
- 150000001875 compounds Chemical class 0.000 description 8
- 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 8
- XFNJVJPLKCPIBV-UHFFFAOYSA-N trimethylenediamine Chemical compound NCCCN XFNJVJPLKCPIBV-UHFFFAOYSA-N 0.000 description 8
- 125000003277 amino group Chemical group 0.000 description 7
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 7
- RPNUMPOLZDHAAY-UHFFFAOYSA-N Diethylenetriamine Chemical compound NCCNCCN RPNUMPOLZDHAAY-UHFFFAOYSA-N 0.000 description 6
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 6
- 150000001721 carbon Chemical group 0.000 description 6
- 125000000816 ethylene group Chemical group [H]C([H])([*:1])C([H])([H])[*:2] 0.000 description 6
- 125000001570 methylene group Chemical group [H]C([H])([*:1])[*:2] 0.000 description 6
- FAGUFWYHJQFNRV-UHFFFAOYSA-N tetraethylenepentamine Chemical compound NCCNCCNCCNCCN FAGUFWYHJQFNRV-UHFFFAOYSA-N 0.000 description 6
- 239000011521 glass Substances 0.000 description 5
- 238000002156 mixing Methods 0.000 description 5
- 150000005846 sugar alcohols Polymers 0.000 description 5
- 235000010585 Ammi visnaga Nutrition 0.000 description 4
- 244000153158 Ammi visnaga Species 0.000 description 4
- PIICEJLVQHRZGT-UHFFFAOYSA-N Ethylenediamine Chemical compound NCCN PIICEJLVQHRZGT-UHFFFAOYSA-N 0.000 description 4
- 239000004721 Polyphenylene oxide Substances 0.000 description 4
- ZJCCRDAZUWHFQH-UHFFFAOYSA-N Trimethylolpropane Chemical compound CCC(CO)(CO)CO ZJCCRDAZUWHFQH-UHFFFAOYSA-N 0.000 description 4
- MRNZSTMRDWRNNR-UHFFFAOYSA-N bis(hexamethylene)triamine Chemical compound NCCCCCCNCCCCCCN MRNZSTMRDWRNNR-UHFFFAOYSA-N 0.000 description 4
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 description 4
- VHRGRCVQAFMJIZ-UHFFFAOYSA-N cadaverine Chemical compound NCCCCCN VHRGRCVQAFMJIZ-UHFFFAOYSA-N 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 4
- NAQMVNRVTILPCV-UHFFFAOYSA-N hexane-1,6-diamine Chemical compound NCCCCCCN NAQMVNRVTILPCV-UHFFFAOYSA-N 0.000 description 4
- GKQPCPXONLDCMU-CCEZHUSRSA-N lacidipine Chemical compound CCOC(=O)C1=C(C)NC(C)=C(C(=O)OCC)C1C1=CC=CC=C1\C=C\C(=O)OC(C)(C)C GKQPCPXONLDCMU-CCEZHUSRSA-N 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- LSHROXHEILXKHM-UHFFFAOYSA-N n'-[2-[2-[2-(2-aminoethylamino)ethylamino]ethylamino]ethyl]ethane-1,2-diamine Chemical compound NCCNCCNCCNCCNCCN LSHROXHEILXKHM-UHFFFAOYSA-N 0.000 description 4
- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical compound OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 description 4
- 230000000704 physical effect Effects 0.000 description 4
- 229920000570 polyether Polymers 0.000 description 4
- 229920006295 polythiol Polymers 0.000 description 4
- KIDHWZJUCRJVML-UHFFFAOYSA-N putrescine Chemical compound NCCCCN KIDHWZJUCRJVML-UHFFFAOYSA-N 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 125000000383 tetramethylene group Chemical group [H]C([H])([*:1])C([H])([H])C([H])([H])C([H])([H])[*:2] 0.000 description 4
- 239000004593 Epoxy Substances 0.000 description 3
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 3
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 3
- JOBBTVPTPXRUBP-UHFFFAOYSA-N [3-(3-sulfanylpropanoyloxy)-2,2-bis(3-sulfanylpropanoyloxymethyl)propyl] 3-sulfanylpropanoate Chemical compound SCCC(=O)OCC(COC(=O)CCS)(COC(=O)CCS)COC(=O)CCS JOBBTVPTPXRUBP-UHFFFAOYSA-N 0.000 description 3
- IHUNBGSDBOWDMA-AQFIFDHZSA-N all-trans-acitretin Chemical compound COC1=CC(C)=C(\C=C\C(\C)=C\C=C\C(\C)=C\C(O)=O)C(C)=C1C IHUNBGSDBOWDMA-AQFIFDHZSA-N 0.000 description 3
- ZBCBWPMODOFKDW-UHFFFAOYSA-N diethanolamine Chemical compound OCCNCCO ZBCBWPMODOFKDW-UHFFFAOYSA-N 0.000 description 3
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 3
- 235000011187 glycerol Nutrition 0.000 description 3
- 150000003141 primary amines Chemical class 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 150000003335 secondary amines Chemical class 0.000 description 3
- 125000004806 1-methylethylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 2
- IMQFZQVZKBIPCQ-UHFFFAOYSA-N 2,2-bis(3-sulfanylpropanoyloxymethyl)butyl 3-sulfanylpropanoate Chemical compound SCCC(=O)OCC(CC)(COC(=O)CCS)COC(=O)CCS IMQFZQVZKBIPCQ-UHFFFAOYSA-N 0.000 description 2
- AHDSRXYHVZECER-UHFFFAOYSA-N 2,4,6-tris[(dimethylamino)methyl]phenol Chemical compound CN(C)CC1=CC(CN(C)C)=C(O)C(CN(C)C)=C1 AHDSRXYHVZECER-UHFFFAOYSA-N 0.000 description 2
- JZUHIOJYCPIVLQ-UHFFFAOYSA-N 2-methylpentane-1,5-diamine Chemical compound NCC(C)CCCN JZUHIOJYCPIVLQ-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- BRLQWZUYTZBJKN-UHFFFAOYSA-N Epichlorohydrin Chemical compound ClCC1CO1 BRLQWZUYTZBJKN-UHFFFAOYSA-N 0.000 description 2
- QIGBRXMKCJKVMJ-UHFFFAOYSA-N Hydroquinone Chemical compound OC1=CC=C(O)C=C1 QIGBRXMKCJKVMJ-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- LULCPJWUGUVEFU-UHFFFAOYSA-N Phthiocol Natural products C1=CC=C2C(=O)C(C)=C(O)C(=O)C2=C1 LULCPJWUGUVEFU-UHFFFAOYSA-N 0.000 description 2
- 239000007983 Tris buffer Substances 0.000 description 2
- PXKLMJQFEQBVLD-UHFFFAOYSA-N bisphenol F Chemical compound C1=CC(O)=CC=C1CC1=CC=C(O)C=C1 PXKLMJQFEQBVLD-UHFFFAOYSA-N 0.000 description 2
- YCIMNLLNPGFGHC-UHFFFAOYSA-N catechol Chemical compound OC1=CC=CC=C1O YCIMNLLNPGFGHC-UHFFFAOYSA-N 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 230000002354 daily effect Effects 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 125000000959 isobutyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])* 0.000 description 2
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 2
- ZETYUTMSJWMKNQ-UHFFFAOYSA-N n,n',n'-trimethylhexane-1,6-diamine Chemical compound CNCCCCCCN(C)C ZETYUTMSJWMKNQ-UHFFFAOYSA-N 0.000 description 2
- 125000004108 n-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 2
- 125000004123 n-propyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])* 0.000 description 2
- XNGIFLGASWRNHJ-UHFFFAOYSA-N phthalic acid Chemical compound OC(=O)C1=CC=CC=C1C(O)=O XNGIFLGASWRNHJ-UHFFFAOYSA-N 0.000 description 2
- AOHJOMMDDJHIJH-UHFFFAOYSA-N propylenediamine Chemical compound CC(N)CN AOHJOMMDDJHIJH-UHFFFAOYSA-N 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- GHMLBKRAJCXXBS-UHFFFAOYSA-N resorcinol Chemical compound OC1=CC=CC(O)=C1 GHMLBKRAJCXXBS-UHFFFAOYSA-N 0.000 description 2
- 125000002914 sec-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 2
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 2
- 125000001302 tertiary amino group Chemical group 0.000 description 2
- 150000003568 thioethers Chemical class 0.000 description 2
- IAQRGUVFOMOMEM-ONEGZZNKSA-N trans-but-2-ene Chemical group C\C=C\C IAQRGUVFOMOMEM-ONEGZZNKSA-N 0.000 description 2
- QXJQHYBHAIHNGG-UHFFFAOYSA-N trimethylolethane Chemical compound OCC(C)(CO)CO QXJQHYBHAIHNGG-UHFFFAOYSA-N 0.000 description 2
- VXNZUUAINFGPBY-UHFFFAOYSA-N 1-Butene Chemical group CCC=C VXNZUUAINFGPBY-UHFFFAOYSA-N 0.000 description 1
- KUBDPQJOLOUJRM-UHFFFAOYSA-N 2-(chloromethyl)oxirane;4-[2-(4-hydroxyphenyl)propan-2-yl]phenol Chemical compound ClCC1CO1.C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 KUBDPQJOLOUJRM-UHFFFAOYSA-N 0.000 description 1
- GTEXIOINCJRBIO-UHFFFAOYSA-N 2-[2-(dimethylamino)ethoxy]-n,n-dimethylethanamine Chemical compound CN(C)CCOCCN(C)C GTEXIOINCJRBIO-UHFFFAOYSA-N 0.000 description 1
- HFGWEGUVPBZOEA-UHFFFAOYSA-N 2-ethyl-2-(hydroxymethyl)propane-1,3-diol;2-methyl-2-sulfanylpropanoic acid Chemical compound CC(C)(S)C(O)=O.CC(C)(S)C(O)=O.CC(C)(S)C(O)=O.CCC(CO)(CO)CO HFGWEGUVPBZOEA-UHFFFAOYSA-N 0.000 description 1
- IYGAVZICZNAMTF-UHFFFAOYSA-N 2-ethyl-2-(hydroxymethyl)propane-1,3-diol;2-methyl-3-sulfanylpropanoic acid Chemical compound SCC(C)C(O)=O.SCC(C)C(O)=O.SCC(C)C(O)=O.CCC(CO)(CO)CO IYGAVZICZNAMTF-UHFFFAOYSA-N 0.000 description 1
- RFMXKZGZSGFZES-UHFFFAOYSA-N 2-ethyl-2-(hydroxymethyl)propane-1,3-diol;2-sulfanylacetic acid Chemical compound OC(=O)CS.OC(=O)CS.OC(=O)CS.CCC(CO)(CO)CO RFMXKZGZSGFZES-UHFFFAOYSA-N 0.000 description 1
- WBEKRAXYEBAHQF-UHFFFAOYSA-N 2-ethyl-2-(hydroxymethyl)propane-1,3-diol;3-sulfanylbutanoic acid Chemical compound CC(S)CC(O)=O.CC(S)CC(O)=O.CC(S)CC(O)=O.CCC(CO)(CO)CO WBEKRAXYEBAHQF-UHFFFAOYSA-N 0.000 description 1
- LABQKWYHWCYABU-UHFFFAOYSA-N 4-(3-sulfanylbutanoyloxy)butyl 3-sulfanylbutanoate Chemical compound CC(S)CC(=O)OCCCCOC(=O)CC(C)S LABQKWYHWCYABU-UHFFFAOYSA-N 0.000 description 1
- JSOVZQSFWPMPKN-UHFFFAOYSA-N 4-(3-sulfanylpropanoyloxy)butyl 3-sulfanylpropanoate Chemical compound SCCC(=O)OCCCCOC(=O)CCS JSOVZQSFWPMPKN-UHFFFAOYSA-N 0.000 description 1
- ZYZWCJWINLGQRL-UHFFFAOYSA-N 4-phenylcyclohexa-2,4-diene-1,1-diol Chemical group C1=CC(O)(O)CC=C1C1=CC=CC=C1 ZYZWCJWINLGQRL-UHFFFAOYSA-N 0.000 description 1
- 102100027123 55 kDa erythrocyte membrane protein Human genes 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- 101001057956 Homo sapiens 55 kDa erythrocyte membrane protein Proteins 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- VQTUBCCKSQIDNK-UHFFFAOYSA-N Isobutene Chemical group CC(C)=C VQTUBCCKSQIDNK-UHFFFAOYSA-N 0.000 description 1
- SFSVFJWKALNING-UHFFFAOYSA-N SCCC.C(O)C(CC)(CO)CO Chemical compound SCCC.C(O)C(CC)(CO)CO SFSVFJWKALNING-UHFFFAOYSA-N 0.000 description 1
- CZMRCDWAGMRECN-UGDNZRGBSA-N Sucrose Chemical compound O[C@H]1[C@H](O)[C@@H](CO)O[C@@]1(CO)O[C@@H]1[C@H](O)[C@@H](O)[C@H](O)[C@@H](CO)O1 CZMRCDWAGMRECN-UGDNZRGBSA-N 0.000 description 1
- 229930006000 Sucrose Natural products 0.000 description 1
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 description 1
- OWENYJIXMBIZBB-UHFFFAOYSA-N [3-(2-methyl-2-sulfanylpropanoyl)oxy-2,2-bis[(2-methyl-2-sulfanylpropanoyl)oxymethyl]propyl] 2-methyl-2-sulfanylpropanoate Chemical compound CC(C)(S)C(=O)OCC(COC(=O)C(C)(C)S)(COC(=O)C(C)(C)S)COC(=O)C(C)(C)S OWENYJIXMBIZBB-UHFFFAOYSA-N 0.000 description 1
- UEUSKMPCQXJIGH-UHFFFAOYSA-N [3-(2-methyl-3-sulfanylpropanoyl)oxy-2,2-bis[(2-methyl-3-sulfanylpropanoyl)oxymethyl]propyl] 2-methyl-3-sulfanylpropanoate Chemical compound SCC(C)C(=O)OCC(COC(=O)C(C)CS)(COC(=O)C(C)CS)COC(=O)C(C)CS UEUSKMPCQXJIGH-UHFFFAOYSA-N 0.000 description 1
- RUDUCNPHDIMQCY-UHFFFAOYSA-N [3-(2-sulfanylacetyl)oxy-2,2-bis[(2-sulfanylacetyl)oxymethyl]propyl] 2-sulfanylacetate Chemical compound SCC(=O)OCC(COC(=O)CS)(COC(=O)CS)COC(=O)CS RUDUCNPHDIMQCY-UHFFFAOYSA-N 0.000 description 1
- VTLHIRNKQSFSJS-UHFFFAOYSA-N [3-(3-sulfanylbutanoyloxy)-2,2-bis(3-sulfanylbutanoyloxymethyl)propyl] 3-sulfanylbutanoate Chemical compound CC(S)CC(=O)OCC(COC(=O)CC(C)S)(COC(=O)CC(C)S)COC(=O)CC(C)S VTLHIRNKQSFSJS-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 125000003368 amide group Chemical group 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 239000007822 coupling agent Substances 0.000 description 1
- 229940105990 diglycerin Drugs 0.000 description 1
- GPLRAVKSCUXZTP-UHFFFAOYSA-N diglycerol Chemical compound OCC(O)COCC(O)CO GPLRAVKSCUXZTP-UHFFFAOYSA-N 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- TZMQHOJDDMFGQX-UHFFFAOYSA-N hexane-1,1,1-triol Chemical compound CCCCCC(O)(O)O TZMQHOJDDMFGQX-UHFFFAOYSA-N 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- ZUHZZVMEUAUWHY-UHFFFAOYSA-N n,n-dimethylpropan-1-amine Chemical compound CCCN(C)C ZUHZZVMEUAUWHY-UHFFFAOYSA-N 0.000 description 1
- 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 description 1
- 150000002989 phenols Chemical class 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 229920005862 polyol Polymers 0.000 description 1
- 150000003077 polyols Chemical class 0.000 description 1
- 229920001021 polysulfide Polymers 0.000 description 1
- 150000008117 polysulfides Polymers 0.000 description 1
- 238000004382 potting Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000005720 sucrose Substances 0.000 description 1
- 150000003512 tertiary amines Chemical class 0.000 description 1
- 125000005300 thiocarboxy group Chemical group C(=S)(O)* 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
- C08G59/18—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing
- C08G59/40—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the curing agents used
- C08G59/66—Mercaptans
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
- C08G59/18—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing
- C08G59/40—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the curing agents used
- C08G59/50—Amines
- C08G59/56—Amines together with other curing agents
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
- C08G59/18—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing
- C08G59/68—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the catalysts used
- C08G59/686—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the catalysts used containing nitrogen
-
- 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
- C08K5/17—Amines; Quaternary ammonium compounds
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- 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
- C08K5/3467—Heterocyclic compounds having nitrogen in the ring having more than two nitrogen atoms in the ring
- C08K5/3477—Six-membered rings
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- 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
- C08K5/36—Sulfur-, selenium-, or tellurium-containing compounds
- C08K5/37—Thiols
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L63/00—Compositions of epoxy resins; Compositions of derivatives of epoxy resins
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/06—Non-macromolecular additives organic
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J163/00—Adhesives based on epoxy resins; Adhesives based on derivatives of epoxy resins
Definitions
- the present invention relates to an epoxy resin curable composition that cures quickly, has high hardness after curing, has high adhesive strength, and provides a cured product with excellent color tone.
- Epoxy resins have traditionally had good adhesiveness, chemical resistance, and physical properties, and have been widely used as adhesives. For applications requiring rapid curing and high adhesive strength, a method of adding a thiol compound as a curing agent and an amine as a curing accelerator is known.
- Compounds having a polyether skeleton in the main chain and having three or more thiol groups in one molecule include, for example, “Polythiol QE-340M” manufactured by Toray Fine Chemicals Co., Ltd., “Capcure 3-800” manufactured by Gabriel Performance Products and " GPM-800”.
- Amines widely used as curing accelerators for thiol groups and epoxy groups include 2,4,6-tris(dimethylaminomethyl)phenol (ANCAMINE K-54, manufactured by Evonik Co., Ltd.), N,N-dimethylpropylamine, Tertiary amines such as bis(2-dimethylaminoethyl)ether are included.
- the present invention provides an epoxy resin curable composition that cures quickly, has high hardness after curing, and has excellent color tone.
- the epoxy resin curable composition of the present invention comprises an epoxy resin having two or more epoxy groups in one molecule, a thiol compound A having two or more thiol groups in one molecule, a primary amine and/or a secondary amine. and an epoxy resin curable composition containing a thiol compound B represented by any one of the following general formulas (1) to (3), wherein the thiol compound A and the thiol compound B are different from each other, Me is the number of moles of the epoxy groups contained in the curable epoxy resin composition, M A is the number of moles of the thiol groups possessed by the thiol compound A , and M B is the number of moles of the thiol groups possessed by the thiol compound B.
- R 1 is an alkylene group having 1 to 10 carbon atoms independently of each other
- R 2 is a hydrogen atom, an alkyl group having 1 to 10 carbon atoms or a hydroxyalkyl group having 1 to 3 carbon atoms
- R 3 independently represents an alkylene group having 1 to 3 carbon atoms
- n represents an integer of 0 to 2
- R 1 is an alkylene group having 1 to 10 carbon atoms independently of each other
- R 2 is a hydrogen atom, an alkyl group having 1 to 10 carbon atoms or a hydroxyalkyl group having 1 to 3 carbon atoms
- R 3 independently represents an alkylene group having 1 to 3 carbon atoms
- n represents an integer of 0 to 2
- the epoxy resin curable composition of the present invention cures quickly, has high hardness after curing, has high adhesive strength, and has excellent color tone.
- epoxy resin curable composition of the present invention When used as an adhesive, it exhibits strong adhesion to various adherends such as metal and glass.
- This epoxy resin curable composition can be used as an adhesive, a sealing material, a potting material, a coating agent, a resin modifier, and the like.
- the epoxy resin curable composition of the present invention since the epoxy resin curable composition of the present invention has excellent color tone, it can be Great for everyday carpentry adhesives.
- the epoxy resin curable composition of the present invention comprises an epoxy resin having two or more epoxy groups in one molecule, a thiol compound A having two or more thiol groups in one molecule, a primary amino group and/or a secondary amino and an amine compound having a group, and a thiol compound B which is represented by a specific structural formula and which is different from the thiol compound A.
- Epoxy resins having two or more epoxy groups in one molecule include polyhydric phenols such as bisphenol A, bisphenol F, resorcinol, hydroquinone, pyrocatechol, 4,4-dihydroxybiphenyl, 1,5-hydroxynaphthalene, epichloro Epoxy resins obtained by adding hydrin, epoxy resins obtained by adding epichlorohydrin to polyhydric alcohols such as ethylene glycol, propylene glycol and glycerin, and aromatic dicarboxylic acids such as oxybenzoic acid and phthalic acid epoxy resin obtained by adding epichlorohydrin, polysulfide polymer having an epoxy group at the end (trade name "FLEP-50", “FLEP-60” both manufactured by Toray Fine Chemicals Co., Ltd.) and the like.
- polyhydric phenols such as bisphenol A, bisphenol F, resorcinol, hydroquinone, pyrocatechol, 4,4-dihydroxybiphenyl, 1,5-hydroxynaphthal
- the epoxy resin having two or more epoxy groups in one molecule is preferably liquid at room temperature from the viewpoint of workability and prevention of poor mixing.
- Examples of epoxy resins having two or more epoxy groups in one molecule include jER-828 (trade name, manufactured by Mitsubishi Chemical Corporation), DER-331 (trade name, manufactured by Dow Chemical), jER-825 (trade name , Mitsubishi Chemical Co., Ltd.), jER-827 (trade name, Mitsubishi Chemical Co., Ltd.), jER-806 (trade name, Mitsubishi Chemical Co., Ltd.), jER-807 (trade name, Mitsubishi Chemical Co., Ltd.) ) made) and the like.
- Epoxy resins having two or more epoxy groups in one molecule preferably have an epoxy equivalent of 50 to 1000 g/eq. Epoxy resins having two or more epoxy groups in one molecule more preferably have an epoxy equivalent of 100 to 300 g/eq.
- the epoxy resin curable composition contains at least two thiol compounds consisting of thiol compound A and thiol compound B, it cures quickly, exhibits high hardness after curing, exhibits high adhesive strength, and exhibits excellent color tone.
- the thiol compound B is a compound different from the thiocol compound A, and is a thiol compound represented by any one of the following general formulas (1) to (3).
- R 1 is an alkylene group having 1 to 10 carbon atoms independently of each other
- R 2 is a hydrogen atom, an alkyl group having 1 to 10 carbon atoms or a hydroxyalkyl group having 1 to 3 carbon atoms
- R 3 independently represents an alkylene group having 1 to 3 carbon atoms
- n represents an integer of 0 to 2
- —SH bonds to any carbon atom of R 1 represents an integer of 0 to 2
- R 1 is an alkylene group having 1 to 10 carbon atoms independently of each other
- R 2 is a hydrogen atom, an alkyl group having 1 to 10 carbon atoms or a hydroxyalkyl group having 1 to 3 carbon atoms
- R 3 independently represents an alkylene group having 1 to 3 carbon atoms
- n represents an integer of 0 to 2
- a plurality of R 1 are each independently an alkylene group having 1 to 10 carbon atoms, preferably an alkylene group having 2 to 7 carbon atoms, more preferably an alkylene group having 2 to 4 carbon atoms.
- a plurality of R 1 may be the same or different.
- the alkylene group R 1 include methylene group, ethylene group, propylene group, 1-methylethylene group, butylene group, ethylethylene group, dimethylethylene group, and the like.
- a plurality of R 3 are each independently an alkylene group having 1 to 3 carbon atoms, preferably an alkylene group having 1 to 2 carbon atoms.
- a plurality of R 3 may be the same or different.
- Examples of the alkylene group R 3 include methylene group, ethylene group, propylene group, methylethylene group and the like.
- a plurality of R 2 are independently of each other a hydrogen atom, an alkyl group having 1 to 10 carbon atoms or a hydroxyalkyl group having 1 to 3 carbon atoms, preferably hydrogen or an alkyl group having 1 to 4 carbon atoms. or a hydroxyalkyl group having 1 to 2 carbon atoms.
- a plurality of R 3 may be the same or different.
- the alkyl group R 3 include methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, isobutyl group, sec-butyl group, tert-butyl group and the like.
- Hydroxyalkyl groups include methylol, hydroxyethyl and hydroxypropyl groups.
- n represents an integer of 0 to 2
- —SH is bonded to any carbon atom constituting the alkylene group R 1 .
- Examples of the thioether compound B represented by the general formula (1) include 1,4-bis(3-mercaptopropionyloxy)butane, 1,4-bis(3-mercaptobutyryloxy)butane, trimethylolpropane tris ( 3-mercaptopropionate), trimethylolpropane tris (3-mercaptobutyrate), trimethylolpropane tris (3-mercaptoisobutyrate), trimethylolpropane tris (2-mercaptoisobutyrate), trimethylolpropane tris Thioglycolate, pentaerythritol tetrakis (3-mercaptopropionate), pentaerythritol tetrakis (3-mercaptobutyrate), pentaerythritol tetrakis (3-mercaptoisobutyrate), pentaerythritol tetrakis (2-mercaptoisobutyrate) , pentaeryth
- a plurality of R 1 are each independently an alkylene group having 1 to 10 carbon atoms, preferably an alkylene group having 2 to 7 carbon atoms, more preferably an alkylene group having 2 to 4 carbon atoms.
- a plurality of R 1 may be the same or different.
- the alkylene group R 1 include methylene group, ethylene group, propylene group, 1-methylethylene group, butylene group, ethylethylene group, dimethylethylene group, and the like.
- a plurality of R 3 are each independently an alkylene group having 1 to 3 carbon atoms, preferably an alkylene group having 1 to 2 carbon atoms.
- a plurality of R 3 may be the same or different.
- Examples of the alkylene group R 3 include methylene group, ethylene group, propylene group, methylethylene group and the like.
- a plurality of R 2 are independently of each other a hydrogen atom, an alkyl group having 1 to 10 carbon atoms or a hydroxyalkyl group having 1 to 3 carbon atoms, preferably hydrogen, or an alkyl group having 1 to 4 carbon atoms. or a hydroxyalkyl group having 1 to 2 carbon atoms.
- a plurality of R 3 may be the same or different.
- the alkyl group R 3 include methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, isobutyl group, sec-butyl group, tert-butyl group and the like.
- Hydroxyalkyl groups include methylol, hydroxyethyl and hydroxypropyl groups.
- n represents an integer of 0 to 2
- thioether compound B represented by the general formula (3) for example, trimethylolpropane monopropanethiol, trimethylolpropane bis (propanethiol), trimethylolpropane tris (propanethiol), pentaerythritol monopropanethiol, pentaerythritol bis (propanethiol), pentaerythritol tris (propanethiol), pentaerythritol tetrakis (propanethiol), and the like.
- the thiol compound A is a compound different from the thiocol compound B described above, and is a thiol compound containing two or more thiol groups in one molecule.
- the thiol compound A preferably has a polyether moiety in the main chain and a thiol group on the carbon next to the carbon with the hydroxy group. Furthermore, the thiol compound A should not have a carbonyl group. When the thiol compound A does not have a carbonyl group, hydrolysis of the cured product is suppressed and water resistance is improved, which is preferable.
- a structure having a polyether moiety in the main chain is preferably represented by the following general formula (4), and a terminal thiol group is preferably represented by the following formula (5).
- R 1 is a residue obtained by removing m hydrogen atoms from a polyhydric amine or polyhydric alcohol having 10 or less carbon atoms
- R 2 is an alkylene group having 2 to 4 carbon atoms
- n is an integer from 1 to 200
- m is an integer from 2 to 8.
- R 1 is a residue obtained by removing m hydrogen atoms from a polyhydric amine or polyhydric alcohol having 10 or less carbon atoms.
- polyhydric amines or polyhydric alcohols having 10 or less carbon atoms include glycerin, trimethylolpropane, trimethylolethane, hexanetriol, diglycerin, pentaerythritol, triethanolamine, ethylenediamine and sucrose. These polyhydric amines and polyhydric alcohols may be used alone or in combination. Among the above polyols, glycerin, trimethylolpropane and trimethylolethane are particularly preferred.
- R 2 is an alkylene group having 2 to 4 carbon atoms.
- alkylene groups having 2 to 4 carbon atoms include ethylene, n-propylene, isopropylene, n-butylene and isobutylene.
- n is an integer of 1-200, preferably an integer of 1-100.
- m is an integer of 2-8, preferably an integer of 2-5.
- thiol compound A having the structure represented by the general formulas (4) and (5) and having no carbonyl group, "Polythiol QE-340M” manufactured by Toray Fine Chemicals Co., Ltd., “Polythiol QE-340M” manufactured by Gabriel Performance Products Capcure 3-800” and “GPM-800”.
- the thiol compound A containing two or more thiol groups in one molecule preferably has at least one thiol group represented by the above formula (5), more preferably two or more.
- Thiol compound A may contain all thiol groups as structures represented by the formula (5).
- the thiol compound A containing two or more thiol groups in one molecule preferably has a thiol group content of 1 to 50% by mass, more preferably a thiol group content of 5 to 20% by mass. be.
- the thiol compound A does not have a carbonyl group means that the thiol compound A does not have a carbonyl group, a carboxy group, a thiocarboxy group, an amide group, an ester bond, a thioester bond, and the like.
- the epoxy resin and the thiol compound described above are present in the epoxy resin curable composition, and the molar ratio M A / Me is 0.29 to 0.8, the molar ratio M of the number of moles M of thiol groups derived from the thiol compound B to the number of moles Me of epoxy groups derived from the epoxy resin present in the epoxy resin curable composition.
- B /Me is 0.02 to 0.4.
- the molar ratio M A /Me is less than 0.29, the curing speed will be slow. Moreover, when the molar ratio M A /Me exceeds 0.8, the Shore D hardness of the cured product of the epoxy resin curable composition cannot be increased. On the other hand, when the molar ratio M B /Me is less than 0.02, the Shore D hardness of the cured product cannot be increased. On the other hand, when the molar ratio M B /Me exceeds 0.4, the Shore D hardness of the cured product of the epoxy resin curable composition is rather lowered.
- the molar ratio M A /Me is preferably 0.29 to 0.7, more preferably 0.29 to 0.65, further preferably 0.29 to 0.57. can be done.
- the molar ratio M B /Me is preferably 0.02 to 0.3, more preferably 0.03 to 0.2, more preferably 0.04 to 0.14. can.
- the epoxy resin curable composition has a molar ratio M B /MA of the number M B of moles of thiol groups derived from thiol compound B to the number M A of moles of thiol groups derived from thiol compound A present in the composition. is preferably 0.02 to 0.5, more preferably 0.04 to 0.4, and still more preferably 0.13 to 0.34.
- M B /M A 0.02 or more
- the cured product has a high Shore D hardness, which is preferable.
- the molar ratio M B /M A is 0.5 or less, the curing speed is increased, which is preferable.
- the amount of the thiol compound A is appropriately adjusted so as to satisfy the molar ratio M A /Me, preferably the molar ratio M B /MA, and according to the physical properties of the epoxy resin curable composition. , can be designed. For example, it is preferable to blend 50 to 150 parts by mass of the thiol compound A with 100 parts by mass of an epoxy resin having two or more epoxy groups in one molecule. When the amount of the thiol compound A is 50 to 150 parts by mass with respect to 100 parts by mass of the epoxy resin, the epoxy resin curable composition can be cured quickly, the cured product has high hardness, and has sufficient adhesive strength.
- the amount of thiol compound A blended with respect to 100 parts by mass of the epoxy resin is more preferably 60 to 120 parts by mass, still more preferably 70 to 100 parts by mass.
- the thiol compound B is appropriately designed so as to satisfy the above-described molar ratio M B /Me, preferably the molar ratio M B /MA, and according to the physical properties of the epoxy resin curable composition. be able to.
- the amount of the thiol compound B is 1 to 40 parts by mass with respect to 100 parts by mass of the epoxy resin, a cured product having a high Shore D hardness and an excellent curing speed can be obtained.
- the amount of the thiol compound B blended with respect to 100 parts by mass of the epoxy resin is more preferably 1 to 20 parts by mass, still more preferably 2 to 12 parts by mass.
- the epoxy resin curable composition contains an amine compound having a primary amino group and/or a secondary amino group.
- the amine compound may have only primary amino groups derived from primary amines or only secondary amino groups derived from secondary amines, and may have primary amino groups derived from primary amines and secondary amines. may have a secondary amino group derived from
- the amine compound is preferably an aliphatic amine.
- aliphatic amines include ethylenediamine, 1,2-diaminopropane, 1,3-diaminopropane, 1,5-diaminopentane, hexamethylenediamine, tetramethylenediamine, trimethylhexamethylenediamine, 2-methyl-1,5 -diaminopentane, polyetherdiamine, 1,3-diaminopropane, diethylenetriamine, triethylenetetramine, tetraethylenepentamine, pentaethylenehexamine, dipropylenetriamine, bis(hexamethylene)triamine.
- the amine compound is preferably not an amine in which the amino group of the aliphatic amine is composed only of secondary amino groups. That is, the aliphatic amine should have at least one primary amino group.
- the amine compound is more preferably an amine having two or more primary amino groups and/or secondary amino groups in one molecule and no tertiary amino groups.
- amine compounds include ethylenediamine, 1,2-diaminopropane, 1,3-diaminopropane, 1,5-diaminopentane, hexamethylenediamine, tetramethylenediamine, trimethylhexamethylenediamine, 2-methyl-1,5- Diaminopentane, polyetherdiamine, diethylenetriamine, triethylenetetramine, tetraethylenepentamine, pentaethylenehexamine, dipropylenetriamine, bis(hexamethylene)triamine, diethylenetriamine, triethylenetetramine, tetraethylenepentamine, pentaethylenehexamine, dipropylene triamine, bis(hexamethylene)triamine.
- Amines having two or more amino groups in one molecule and no tertiary amino group in the molecule are more preferably ethylenediamine, diethylenetriamine, triethylenetetramine, 1,3-diaminopropane, and tetraethylenepentamine. can be mentioned.
- the amine compound more preferably has 3 or more primary amino groups and/or secondary amino groups in one molecule.
- the amine having 3 or more amino groups in one molecule is preferably diethylenetriamine, triethylenetetramine, tetraethylenepentamine, pentaethylenehexamine, dipropylenetriamine, bis(hexamethylene)triamine, more preferably triethylenetetramine. preferable.
- the amine compound is particularly preferably a modified product made from an amine having 3 or more primary amino groups and/or secondary amino groups in one molecule.
- Modified products made from amines having 3 or more amino groups in one molecule are particularly preferably modified products of diethylenetriamine, modified products of triethylenetetramine, modified products of tetraethylenepentamine, etc. Among them, triethylenetetramine is preferred.
- a modified product obtained by reacting a mono- or polyepoxy compound with the amino group of is more preferable.
- modified products made from amines having 3 or more amino groups in one molecule include "BB-AMINE 3138" manufactured by BB Resins SRL.
- a modified product made from an amine having 3 or more amino groups in one molecule preferably has an amine value of 500 to 2500 KOHmg/g, more preferably an amine value of 800 to 1700 KOHmg/g. .
- the blending amount of the amine compound can be appropriately designed according to the physical properties of the cured product. For example, it is preferable to blend 1 to 30 parts by mass of an amine compound with 100 parts by mass of an epoxy resin having two or more epoxy groups in one molecule. When the amount of the amine compound is 1 to 30 parts by mass with respect to 100 parts by mass of the epoxy resin, it is possible to obtain a cured product that cures quickly, has sufficient adhesive strength, and is excellent in toning properties.
- the amount of the amine compound compounded with respect to 100 parts by mass of the epoxy resin is more preferably 2 to 30 parts by mass, still more preferably 5 to 30 parts by mass.
- the epoxy resin curable composition of the present invention cures at room temperature.
- the epoxy resin curable composition has an excellent color tone after curing, being colorless and/or close to white.
- excellent color tone means that the cured product having a thickness of 8 mm has a chromaticity a * of ⁇ 10 to +10 and b * of ⁇ 15 to +15 in the L * a * b * color system. If the chromaticity a * is outside the range of -10 to +10, the color tone will be dark.
- the epoxy resin curable composition preferably has a chromaticity a * of ⁇ 8 to +8 and b * of ⁇ 13 to +15 in the L * a * b * color system of a cured product having a thickness of 8 mm. . More preferably, the epoxy resin curable composition, after curing for 24 hours at 23° C. and 50% RH, has a L * a * b * chromaticity a * of ⁇ 8 in a cured product having a thickness of 8 mm. ⁇ +5 and b * is ⁇ 10 to +15.
- the chromaticity a * of the cured product is more preferably -7 to +3, still more preferably -5 to +1.
- the chromaticity b * of the cured product is more preferably -7 to +13, still more preferably -5 to +12, and particularly preferably -1 to +11.
- the color tone of a cured product having a thickness of 8 mm is L * a * b * . It is more preferably 60 or more.
- the color space of the L * a * b * color system is one of the color display methods, and was formulated by the Commission Internationale de l'Eclairage (CIE) in 1976.
- the amount of stimulus is physically measured and displayed as lightness (L * value), degree of magenta and green (a * value), and degree of yellow and blue (b * value). If the L * value is 0, it represents black, if it is 100, it represents white, if the a * value is negative, it represents a green color, and if it is positive, it represents a red color; A negative b * value indicates a bluer color, and a positive b* value indicates a yellower color.
- the method for measuring the L * a * b * color space is a color difference meter (for example, trade name "CR-300" manufactured by Minolta; color color difference meter).
- the epoxy resin curable composition preferably has a curing time of 1 to 20 minutes.
- the curing time of the epoxy resin curable composition is more preferably 1 to 15 minutes, more preferably 1 to 10 minutes when 10 g of the epoxy resin curable composition is used and cured at 23° C. and 50% RH. minutes.
- a curing time of 1 to 15 minutes is suitable and preferred for applications requiring rapid curing.
- the measurement of the curing time was based on the method for determining the pot life of a multi-component adhesive (Method 1) described in JIS K 6870. 10 g of epoxy resin was mixed with a thiol compound and an amine compound at a predetermined ratio under conditions of 23° C. and 50% RH.
- the Shore D hardness according to JIS K7215 is preferably 70 or more after 3 hours from the start of curing.
- Shore D hardness according to JIS K7215 after 24 hours is preferably 75 or more. If the Shore D hardness after 3 hours from the start of curing is 70 or more, the cured product will have a high adhesive strength, which is preferable.
- the Shore D hardness 3 hours after the start of curing is more preferably 71-85, more preferably 73-84. Further, when the Shore D hardness 24 hours after the start of curing is 75 or more, the cured product has a high adhesive strength, which is preferable.
- the Shore D hardness 24 hours after the start of curing is more preferably 76-85, more preferably 78-84.
- the epoxy resin curable composition may further contain fillers, plasticizers, flexibility-imparting agents, coupling agents, antioxidants, thixotropy-imparting agents, dispersing agents, etc., to the extent that the objects of the present invention are not impaired. good.
- the epoxy resin curable composition of the present invention adheres well to metal, glass, stone, concrete, etc., and can be used as an adhesive with excellent color tone.
- Adhesives containing this epoxy resin curable composition are suitable, for example, as adhesives for iron plates, adhesives for glass, adhesives for ornaments, adhesives for watch parts, and adhesives for daily carpentry. Suitable for glass adhesives, ornamental adhesives, watch parts adhesives, daily carpentry adhesives.
- Curing time The curing time of the epoxy resin curable composition is determined by inserting a toothpick into the epoxy resin curable composition and making it stop moving, referring to the method for determining the pot life of a multi-component adhesive (method 1) described in JIS K 6870. A point was defined as the cure time. Specifically, under conditions of 23° C. and 50% RH, a toothpick was stuck into the epoxy resin curable composition obtained by mixing the raw materials of each example, and the point at which the toothpick stopped moving was measured as the curing time. Curing time was measured from the start of mixing and determined in minutes by checking the condition of the toothpick every 30 seconds. In Examples 1 to 4 and Comparative Examples 1 to 12, 10 g of epoxy resin was mixed with thiol compound A, thiol compound B and amine compound at the ratios shown in Tables 1 and 2.
- the hardness of the epoxy resin curable composition was measured by the method specified in JIS K 7215. Specifically, the epoxy resin curable composition was poured into a plurality of containers having an inner diameter of 31 mm and a depth of 8 mm in a room at a temperature of 23°C and a humidity of 50% RH, and starting from the start of mixing of the epoxy resin curable composition, 3 Samples for measurement with a diameter of 31 ⁇ 8 mm were obtained after 1 hour and 24 hours. The flat side of the sample was measured using a type D durometer. Each measurement sample was measured three times, and the average value was used as the hardness value.
- the brightness and chromaticity of the cured epoxy resin were measured. Specifically, using a color difference meter (Minolta "CR-300") specified in JIS Z 8781-4, the epoxy resin curable composition according to each example was placed in a container having an inner diameter of 31 mm and a depth of 8 mm. It was put in and cured under conditions of 23° C. and 50% RH. After 24 hours, the epoxy resin cured product was taken out from the container, and the lightness L * , chromaticity a * , and chromaticity b * of the epoxy resin cured product having a thickness of 8 mm were measured at room temperature. Tables 1 and 2 show the measurement results of chromaticity a * and b * .
- Example 1 Under conditions of 23° C. and 50% RH, 10 g of "jER828” (bisphenol A type epoxy resin, epoxy equivalent of 184 to 194 g/eq) manufactured by Mitsubishi Chemical Corporation as an epoxy resin having two or more epoxy groups in one molecule. (100 parts by mass), 7.9 g (79 parts by mass) of "Polythiol QE-340M” manufactured by Toray Fine Chemicals Co., Ltd. as a thiol compound A having two or more thiol groups in one molecule, and a thiol compound B, "TMMP" (trimethylolpropane tris (3-mercaptopropionate)) manufactured by SC Organic Chemical Co., Ltd.
- TMMP trimethylolpropane tris (3-mercaptopropionate
- n 1, R 1 is ethylene group, R 2 is ethyl group, R 3 is methylene group, abbreviated as "TMMP” below and in the tables.
- TMMP methylene group
- the number of moles Me of epoxy groups contained in the epoxy resin curable composition, the number of moles M A of thiol groups derived from thiol compound A , and the number of moles M B of thiol groups derived from thiol compound B are shown in Table 1. Described. Also, molar ratios M A /Me, M A /Me, and M B /M A were calculated and described.
- Example 2 The thiol compound B was converted from TMMP to "PEMP" (pentaerythritol tetrakis (3-mercaptopropionate) manufactured by SC Organic Chemical Co., Ltd., in the general formula (1), where n is 0, R 1 is an ethylene group, and R 3 is methylene
- PEMP pentaerythritol tetrakis (3-mercaptopropionate
- a curable epoxy resin composition was obtained in the same manner as in Example 1, except that the amount was changed to 1.0 g (10 parts by mass).
- Example 3 A curable epoxy resin composition was obtained in the same manner as in Example 1, except that the thiol compound A was changed to 4.0 g (40 parts by mass) and the thiol compound B was changed to 0.3 g (3 parts by mass).
- Example 4 The procedure was the same as in Example 1, except that the thiol compound A was changed to 4.0 g (40 parts by mass), the thiol compound B to 0.3 g (3 parts by mass), and the amine compound to 3.0 g (30 parts by mass). to obtain an epoxy resin curable composition.
- Comparative example 1 A curable epoxy resin composition was obtained in the same manner as in Example 1, except that the thiol compound A was changed to 8.9 g (89 parts by mass) and the thiol compound B was not blended.
- Comparative example 2 A curable epoxy resin composition was obtained in the same manner as in Example 1, except that the thiol compound A was changed to 0.1 g (1 part by mass) and the thiol compound B was changed to 8.8 g (88 parts by mass).
- Comparative example 3 An epoxy resin curable composition was obtained in the same manner as in Example 1, except that the thiol compound A was changed to 11.9 g (119 parts by mass) and the thiol compound B was changed to 4.0 g (40 parts by mass).
- Comparative example 4 A curable epoxy resin composition was obtained in the same manner as in Example 1, except that 11.9 g (119 parts by mass) of thiol compound A and 0.3 g (3 parts by mass) of thiol compound B were used.
- Comparative example 5 A curable epoxy resin composition was obtained in the same manner as in Example 1, except that the thiol compound A was changed to 4.0 g (40 parts by mass) and the thiol compound B was changed to 4.0 g (40 parts by mass).
- Comparative example 6 Same as Example 1 except that 11.9 g (119 parts by mass) of thiol compound A, 4.0 g (40 parts by mass) of thiol compound B, and 3.0 g (30 parts by mass) of amine compound were changed. to obtain an epoxy resin curable composition.
- Comparative example 7 Same as Example 1 except that 11.9 g (119 parts by mass) of thiol compound A, 4.0 g (40 parts by mass) of thiol compound B, and 0.5 g (5 parts by mass) of amine compound were changed. to obtain an epoxy resin curable composition.
- Comparative example 8 Same as Example 1, except that 11.9 g (119 parts by mass) of thiol compound A, 0.3 g (3 parts by mass) of thiol compound B, and 3.0 g (30 parts by mass) of amine compound were changed. to obtain an epoxy resin curable composition.
- Comparative example 9 Same as Example 1, except that 11.9 g (119 parts by mass) of thiol compound A, 0.3 g (3 parts by mass) of thiol compound B, and 0.5 g (5 parts by mass) of amine compound were changed. to obtain an epoxy resin curable composition.
- Comparative example 10 Same as Example 1 except that 4.0 g (40 parts by mass) of thiol compound A, 4.0 g (40 parts by mass) of thiol compound B, and 3.0 g (30 parts by mass) of amine compound were changed. to obtain an epoxy resin curable composition.
- Comparative example 11 Same as Example 1, except that 4.0 g (40 parts by mass) of thiol compound A, 4.0 g (40 parts by mass) of thiol compound B, and 0.5 g (5 parts by mass) of amine compound were changed. to obtain an epoxy resin curable composition.
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Abstract
Description
(R2)n-C-(R3-O-CO-R1-SH)4-n (1)
(一般式(1)において、R1は互いに独立して炭素数1~10のアルキレン基、R2は水素原子、炭素数1~10のアルキル基または炭素数1~3のヒドロキシアルキル基、R3は互いに独立して炭素数1~3のアルキレン基、nは0~2の整数を表し、-SHはR1の任意の炭素原子に結合する。)
(一般式(3)において、R1は互いに独立して炭素数1~10のアルキレン基、R2は水素原子、炭素数1~10のアルキル基または炭素数1~3のヒドロキシアルキル基、R3は互いに独立して炭素数1~3のアルキレン基、nは0~2の整数を表し、-SHはR1の任意の炭素原子に結合する。)
(R2)n-C-(R3-O-CO-R1-SH)4-n (1)
(一般式(1)において、R1は互いに独立して炭素数1~10のアルキレン基、R2は水素原子、炭素数1~10のアルキル基または炭素数1~3のヒドロキシアルキル基、R3は互いに独立して炭素数1~3のアルキレン基、nは0~2の整数を表し、-SHはR1の任意の炭素原子に結合する。)
(一般式(3)において、R1は互いに独立して炭素数1~10のアルキレン基、R2は水素原子、炭素数1~10のアルキル基または炭素数1~3のヒドロキシアルキル基、R3は互いに独立して炭素数1~3のアルキレン基、nは0~2の整数を表し、-SHはR1の任意の炭素原子に結合する。)
本発明において、色調が優れるとは、厚さ8mmの硬化物のL*a*b*表色系における色度a*が-10~+10であり、b*が-15~+15である。色度a*が-10~+10の範囲外であると色調が濃くなる。エポキシ樹脂硬化性組成物は、好ましくは、厚さ8mmの硬化物のL*a*b*表色系における色度a*が、-8~+8であり、b*が-13~+15である。エポキシ樹脂硬化性組成物は、より好ましくは、23℃、50%RH条件で24時間硬化後の厚さ8mmの硬化物のL*a*b*表色系における色度a*が、-8~+5であり、b*が-10~+15である。硬化物の色度a*は、さらに好ましくは-7~+3、さらにより好ましくは-5~+1である。硬化物の色度b*は、さらに好ましくは-7~+13、さらにより好ましくは-5~+12、特に好ましくは、-1~+11である。
エポキシ樹脂硬化性組成物の硬化時間は、JIS K 6870記載の多成分接着剤のポットライフの求め方(方法1)を参考に、エポキシ樹脂硬化性組成物に爪楊枝を入れて動かなくなる点を硬化時間と定義した。具体的には23℃、50%RH条件下において、各例に係る原料を混合して得られたエポキシ樹脂硬化性組成物に爪楊枝を刺し、爪楊枝が動かなくなった点を硬化時間として測定した。硬化時間は混合開始から測定し、30秒毎に爪楊枝の状態を確認して分単位で決定した。実施例1~4、比較例1~12は、エポキシ樹脂10gに、チオール化合物Aとチオール化合物Bとアミン化合物を、表1,2に記載の割合で混合した。
エポキシ樹脂硬化性組成物の硬度はJIS K 7215に規定された方法で測定した。具体的には、温度23℃、湿度50%RHの室内でエポキシ樹脂硬化性組成物を内径31mm、深さ8mmの複数の容器に流し込み、エポキシ樹脂硬化性組成物の混合開始を起点として、3時間後および24時間後に直径31×8mmの測定用試料を得た。試料の平らな面を、タイプDデュロメータを用いて測定した。測定は各測定用試料で3回実施し、平均値を硬度の数値とした。
エポキシ樹脂硬化物の明度および色度を測定した。具体的にはJIS Z 8781-4に規定された色彩色差計(ミノルタ製「CR-300」)を用いて、各例に係るエポキシ樹脂硬化性組成物を、内径31mm、深さ8mmの容器に入れて23℃、50%RH条件で、硬化させた。24時間後にエポキシ樹脂硬化物を容器から取り出し、厚さ8mmのエポキシ樹脂硬化物の明度L*、色度a*、色度b*を、室温で測定した。色度a*およびb*の測定結果を表1,2に示した。
23℃、50%RH条件下において、1分子中にエポキシ基を2個以上有するエポキシ樹脂として三菱ケミカル(株)製「jER828」(ビスフェノールA型エポキシ樹脂、エポキシ当量が184~194g/eq)10g(100質量部)に、1分子中にチオール基を2個以上有するチオール化合物Aとして東レ・ファインケミカル(株)製「ポリチオール QE-340M」7.9g(79質量部)と、チオール化合物Bとして、SC有機化学社製「TMMP」(トリメチロールプロパントリス(3-メルカプトプロピオネート))、一般式(1)において、nが1、R1がエチレン基、R2がエチル基、R3がメチレン基、以下および表中において「TMMP」と略記する。)1.0g(10質量部)と、並びに1級アミノ基および/または2級アミノ基を有するアミン化合物としてBB RESINS SRL製「BB-AMINE 3138」1.1g(11質量部)と、を15秒間ヘラで混合し、エポキシ樹脂硬化性組成物を得た。なお、エポキシ樹脂硬化性組成物に含まれるエポキシ基のモル数Me、チオール化合物Aに由来するチオール基のモル数MA、およびチオール化合物Bに由来するチオール基のモル数MBを表1に記載した。また、モル比MA/Me、MA/Me、およびMB/MAを算出し記載した。
チオール化合物Bを、TMMPから、SC有機化学社製「PEMP」(ペンタエリスリトールテトラキス(3-メルカプトプロピオネート)、一般式(1)において、nが0、R1がエチレン基、R3がメチレン基、以下および表中において「PEMP」と略記する。)1.0g(10質量部)に変更したことを除き、実施例1と同様にしてエポキシ樹脂硬化性組成物を得た。
チオール化合物Aを4.0g(40質量部)、チオール化合物Bを0.3g(3質量部)に変更したことを除き、実施例1と同様にしてエポキシ樹脂硬化性組成物を得た。
チオール化合物Aを4.0g(40質量部)、チオール化合物Bを0.3g(3質量部)、アミン化合物を3.0g(30質量部)に変更したことを除き、実施例1と同様にしてエポキシ樹脂硬化性組成物を得た。
チオール化合物Aを8.9g(89質量部)に変更し、チオール化合物Bを配合しなかったことを除き、実施例1と同様にしてエポキシ樹脂硬化性組成物を得た。
チオール化合物Aを0.1g(1質量部)、チオール化合物Bを8.8g(88質量部)に変更したことを除き、実施例1と同様にしてエポキシ樹脂硬化性組成物を得た。
チオール化合物Aを11.9g(119質量部)、チオール化合物Bを4.0g(40質量部)に変更したことを除き、実施例1と同様にしてエポキシ樹脂硬化性組成物を得た。
チオール化合物Aを11.9g(119質量部)、チオール化合物Bを0.3g(3質量部に変更したことを除き、実施例1と同様にしてエポキシ樹脂硬化性組成物を得た。
チオール化合物Aを4.0g(40質量部)、チオール化合物Bを4.0g(40質量部)に変更したことを除き、実施例1と同様にしてエポキシ樹脂硬化性組成物を得た。
チオール化合物Aを11.9g(119質量部)、チオール化合物Bを4.0g(40質量部)、およびアミン化合物を3.0g(30質量部)に変更したことを除き、実施例1と同様にしてエポキシ樹脂硬化性組成物を得た。
チオール化合物Aを11.9g(119質量部)、チオール化合物Bを4.0g(40質量部)、およびアミン化合物を0.5g(5質量部)に変更したことを除き、実施例1と同様にしてエポキシ樹脂硬化性組成物を得た。
チオール化合物Aを11.9g(119質量部)、チオール化合物Bを0.3g(3質量部)、およびアミン化合物を3.0g(30質量部)に変更したことを除き、実施例1と同様にしてエポキシ樹脂硬化性組成物を得た。
チオール化合物Aを11.9g(119質量部)、チオール化合物Bを0.3g(3質量部)、およびアミン化合物を0.5g(5質量部)に変更したことを除き、実施例1と同様にしてエポキシ樹脂硬化性組成物を得た。
チオール化合物Aを4.0g(40質量部)、チオール化合物Bを4.0g(40質量部)、およびアミン化合物を3.0g(30質量部)に変更したことを除き、実施例1と同様にしてエポキシ樹脂硬化性組成物を得た。
チオール化合物Aを4.0g(40質量部)、チオール化合物Bを4.0g(40質量部)、およびアミン化合物を0.5g(5質量部)に変更したことを除き、実施例1と同様にしてエポキシ樹脂硬化性組成物を得た。
Claims (8)
- 1分子中にエポキシ基を2個以上有するエポキシ樹脂、1分子中にチオール基を2個以上有するチオール化合物A、1級アミノ基および/または2級アミノ基を有するアミン化合物、および下記一般式(1)~(3)のいずれかで表されるチオール化合物Bを含有するエポキシ樹脂硬化性組成物であって、前記チオール化合物Aおよびチオール化合物Bは互いに異なり、前記エポキシ樹脂硬化性組成物に含まれる前記エポキシ基のモル数をMe、前記チオール化合物Aが有するチオール基のモル数をMA、前記チオール化合物Bが有するチオール基のモル数をMB、とするとき、モル比MA/Meが0.29~0.80、かつモル比MB/Meが0.02~0.4であるエポキシ樹脂硬化性組成物。
(R2)n-C-(R3-O-CO-R1-SH)4-n (1)
(一般式(1)において、R1は互いに独立して炭素数1~10のアルキレン基、R2は水素原子、炭素数1~10のアルキル基または炭素数1~3のヒドロキシアルキル基、R3は互いに独立して炭素数1~3のアルキレン基、nは0~2の整数を表し、-SHはR1の任意の炭素原子に結合する。)
(一般式(3)において、R1は互いに独立して炭素数1~10のアルキレン基、R2は水素原子、炭素数1~10のアルキル基または炭素数1~3のヒドロキシアルキル基、R3は互いに独立して炭素数1~3のアルキレン基、nは0~2の整数を表し、-SHはR1の任意の炭素原子に結合する。) - 前記チオール化合物Aが有するチオール基のモル数MAに対する、前記チオール化合物Bが有するチオール基のモル数MBのモル比MB/MAが0.02~0.5である請求項1記載のエポキシ樹脂硬化性組成物。
- 前記チオール化合物Aが、カルボニル基を有しない請求項1または2に記載のエポキシ樹脂硬化性組成物。
- 硬化物のL*a*b*表色系における色度が、a*が-10~+10であり、b*が-15~+15である請求項1~3のいずれかに記載のエポキシ樹脂硬化性組成物。
- 前記エポキシ樹脂硬化性組成物を10g使用し23℃、50%RHで硬化するときの硬化時間が、1~15分である請求項1~4のいずれかに記載のエポキシ樹脂硬化性組成物。
- 前記エポキシ樹脂硬化性組成物を6.0mm厚以上に塗布し23℃、50%RHで硬化するとき、硬化開始3時間後のJIS K7215に準拠したショアD硬度が70以上、硬化開始24時間後のJIS K7215に準拠したショアD硬度が75以上である請求項1~5のいずれかに記載のエポキシ樹脂硬化性組成物。
- 接着剤用である、請求項1~6のいずれかに記載のエポキシ樹脂硬化性組成物。
- 請求項1~7のいずれかに記載のエポキシ樹脂硬化性組成物を含有する接着剤。
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