JP7543912B2 - ラテックス、ラテックス組成物、成形体、およびフォームラバー - Google Patents
ラテックス、ラテックス組成物、成形体、およびフォームラバー Download PDFInfo
- Publication number
- JP7543912B2 JP7543912B2 JP2020563283A JP2020563283A JP7543912B2 JP 7543912 B2 JP7543912 B2 JP 7543912B2 JP 2020563283 A JP2020563283 A JP 2020563283A JP 2020563283 A JP2020563283 A JP 2020563283A JP 7543912 B2 JP7543912 B2 JP 7543912B2
- Authority
- JP
- Japan
- Prior art keywords
- latex
- weight
- conjugated diene
- rubber
- butyl rubber
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 229920000126 latex Polymers 0.000 title claims description 163
- 239000004816 latex Substances 0.000 title claims description 161
- 229920001821 foam rubber Polymers 0.000 title claims description 81
- 239000000203 mixture Substances 0.000 title claims description 65
- 229920005549 butyl rubber Polymers 0.000 claims description 73
- 229920001577 copolymer Polymers 0.000 claims description 58
- 125000002560 nitrile group Chemical group 0.000 claims description 52
- 239000000178 monomer Substances 0.000 claims description 49
- 239000012874 anionic emulsifier Substances 0.000 claims description 25
- 239000006260 foam Substances 0.000 claims description 25
- 238000004132 cross linking Methods 0.000 claims description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 19
- 150000002825 nitriles Chemical class 0.000 claims description 13
- VQTUBCCKSQIDNK-UHFFFAOYSA-N Isobutene Chemical group CC(C)=C VQTUBCCKSQIDNK-UHFFFAOYSA-N 0.000 claims description 10
- 239000003431 cross linking reagent Substances 0.000 claims description 8
- 239000003381 stabilizer Substances 0.000 claims description 8
- 238000000034 method Methods 0.000 description 69
- 239000002245 particle Substances 0.000 description 44
- 239000000839 emulsion Substances 0.000 description 37
- 238000006116 polymerization reaction Methods 0.000 description 36
- -1 octyl paramethoxycinnamate Chemical compound 0.000 description 34
- 239000003995 emulsifying agent Substances 0.000 description 29
- 239000000047 product Substances 0.000 description 27
- 239000007787 solid Substances 0.000 description 21
- 239000000243 solution Substances 0.000 description 19
- RRHGJUQNOFWUDK-UHFFFAOYSA-N Isoprene Chemical compound CC(=C)C=C RRHGJUQNOFWUDK-UHFFFAOYSA-N 0.000 description 18
- 230000001186 cumulative effect Effects 0.000 description 18
- 238000001879 gelation Methods 0.000 description 18
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 description 17
- 239000003921 oil Substances 0.000 description 17
- 239000002904 solvent Substances 0.000 description 17
- 238000002156 mixing Methods 0.000 description 15
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 14
- 238000006243 chemical reaction Methods 0.000 description 14
- 238000000465 moulding Methods 0.000 description 14
- 150000001993 dienes Chemical class 0.000 description 13
- 230000001804 emulsifying effect Effects 0.000 description 13
- 238000003756 stirring Methods 0.000 description 13
- 239000002537 cosmetic Substances 0.000 description 12
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 11
- 238000002360 preparation method Methods 0.000 description 11
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 10
- 239000006185 dispersion Substances 0.000 description 10
- 238000005187 foaming Methods 0.000 description 10
- 229920000642 polymer Polymers 0.000 description 10
- 239000011734 sodium Substances 0.000 description 10
- 229910052708 sodium Inorganic materials 0.000 description 10
- 230000008961 swelling Effects 0.000 description 10
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 9
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 9
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 9
- 229920001971 elastomer Polymers 0.000 description 9
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 9
- 239000007795 chemical reaction product Substances 0.000 description 8
- 238000007654 immersion Methods 0.000 description 8
- 239000000126 substance Substances 0.000 description 8
- 229910021529 ammonia Inorganic materials 0.000 description 7
- 238000005119 centrifugation Methods 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 7
- 239000003960 organic solvent Substances 0.000 description 7
- 229940096992 potassium oleate Drugs 0.000 description 7
- MLICVSDCCDDWMD-KVVVOXFISA-M potassium;(z)-octadec-9-enoate Chemical compound [K+].CCCCCCCC\C=C/CCCCCCCC([O-])=O MLICVSDCCDDWMD-KVVVOXFISA-M 0.000 description 7
- 229910052717 sulfur Inorganic materials 0.000 description 7
- 239000011593 sulfur Substances 0.000 description 7
- YXIWHUQXZSMYRE-UHFFFAOYSA-N 1,3-benzothiazole-2-thiol Chemical compound C1=CC=C2SC(S)=NC2=C1 YXIWHUQXZSMYRE-UHFFFAOYSA-N 0.000 description 6
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 6
- 239000006096 absorbing agent Substances 0.000 description 6
- IOJUPLGTWVMSFF-UHFFFAOYSA-N benzothiazole Chemical compound C1=CC=C2SC=NC2=C1 IOJUPLGTWVMSFF-UHFFFAOYSA-N 0.000 description 6
- 239000000701 coagulant Substances 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 6
- 235000014113 dietary fatty acids Nutrition 0.000 description 6
- 238000004821 distillation Methods 0.000 description 6
- 239000000194 fatty acid Substances 0.000 description 6
- 229930195729 fatty acid Natural products 0.000 description 6
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 description 6
- 239000003505 polymerization initiator Substances 0.000 description 6
- XDTMQSROBMDMFD-UHFFFAOYSA-N Cyclohexane Chemical compound C1CCCCC1 XDTMQSROBMDMFD-UHFFFAOYSA-N 0.000 description 5
- 150000001348 alkyl chlorides Chemical class 0.000 description 5
- 125000000129 anionic group Chemical group 0.000 description 5
- 229910052799 carbon Inorganic materials 0.000 description 5
- 230000015271 coagulation Effects 0.000 description 5
- 238000005345 coagulation Methods 0.000 description 5
- 238000009826 distribution Methods 0.000 description 5
- 229940057995 liquid paraffin Drugs 0.000 description 5
- KUAZQDVKQLNFPE-UHFFFAOYSA-N thiram Chemical class CN(C)C(=S)SSC(=S)N(C)C KUAZQDVKQLNFPE-UHFFFAOYSA-N 0.000 description 5
- OZAIFHULBGXAKX-UHFFFAOYSA-N 2-(2-cyanopropan-2-yldiazenyl)-2-methylpropanenitrile Chemical compound N#CC(C)(C)N=NC(C)(C)C#N OZAIFHULBGXAKX-UHFFFAOYSA-N 0.000 description 4
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 4
- IMNFDUFMRHMDMM-UHFFFAOYSA-N N-Heptane Chemical compound CCCCCCC IMNFDUFMRHMDMM-UHFFFAOYSA-N 0.000 description 4
- OFBQJSOFQDEBGM-UHFFFAOYSA-N Pentane Chemical compound CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 4
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 4
- 239000002253 acid Substances 0.000 description 4
- 239000003638 chemical reducing agent Substances 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 4
- AUZONCFQVSMFAP-UHFFFAOYSA-N disulfiram Chemical compound CCN(CC)C(=S)SSC(=S)N(CC)CC AUZONCFQVSMFAP-UHFFFAOYSA-N 0.000 description 4
- 238000004945 emulsification Methods 0.000 description 4
- 238000007720 emulsion polymerization reaction Methods 0.000 description 4
- 239000011591 potassium Substances 0.000 description 4
- 229910052700 potassium Inorganic materials 0.000 description 4
- 239000002002 slurry Substances 0.000 description 4
- 238000005406 washing Methods 0.000 description 4
- 150000003751 zinc Chemical class 0.000 description 4
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 3
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 3
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 description 3
- RGSFGYAAUTVSQA-UHFFFAOYSA-N Cyclopentane Chemical compound C1CCCC1 RGSFGYAAUTVSQA-UHFFFAOYSA-N 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 3
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 3
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 3
- FZWLAAWBMGSTSO-UHFFFAOYSA-N Thiazole Chemical compound C1=CSC=N1 FZWLAAWBMGSTSO-UHFFFAOYSA-N 0.000 description 3
- 239000007864 aqueous solution Substances 0.000 description 3
- DKVNPHBNOWQYFE-UHFFFAOYSA-N carbamodithioic acid Chemical compound NC(S)=S DKVNPHBNOWQYFE-UHFFFAOYSA-N 0.000 description 3
- 125000004432 carbon atom Chemical group C* 0.000 description 3
- 150000001735 carboxylic acids Chemical class 0.000 description 3
- HRYZWHHZPQKTII-UHFFFAOYSA-N chloroethane Chemical compound CCCl HRYZWHHZPQKTII-UHFFFAOYSA-N 0.000 description 3
- 238000013329 compounding Methods 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 229960003750 ethyl chloride Drugs 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 150000002978 peroxides Chemical class 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 229960002447 thiram Drugs 0.000 description 3
- 239000006097 ultraviolet radiation absorber Substances 0.000 description 3
- 238000004073 vulcanization Methods 0.000 description 3
- PMBXCGGQNSVESQ-UHFFFAOYSA-N 1-Hexanethiol Chemical compound CCCCCCS PMBXCGGQNSVESQ-UHFFFAOYSA-N 0.000 description 2
- YAJYJWXEWKRTPO-UHFFFAOYSA-N 2,3,3,4,4,5-hexamethylhexane-2-thiol Chemical compound CC(C)C(C)(C)C(C)(C)C(C)(C)S YAJYJWXEWKRTPO-UHFFFAOYSA-N 0.000 description 2
- SDJHPPZKZZWAKF-UHFFFAOYSA-N 2,3-dimethylbuta-1,3-diene Chemical compound CC(=C)C(C)=C SDJHPPZKZZWAKF-UHFFFAOYSA-N 0.000 description 2
- HXVNBWAKAOHACI-UHFFFAOYSA-N 2,4-dimethyl-3-pentanone Chemical compound CC(C)C(=O)C(C)C HXVNBWAKAOHACI-UHFFFAOYSA-N 0.000 description 2
- AFABGHUZZDYHJO-UHFFFAOYSA-N 2-Methylpentane Chemical compound CCCC(C)C AFABGHUZZDYHJO-UHFFFAOYSA-N 0.000 description 2
- ZPVFWPFBNIEHGJ-UHFFFAOYSA-N 2-octanone Chemical compound CCCCCCC(C)=O ZPVFWPFBNIEHGJ-UHFFFAOYSA-N 0.000 description 2
- 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 2
- BUZICZZQJDLXJN-UHFFFAOYSA-N 3-azaniumyl-4-hydroxybutanoate Chemical compound OCC(N)CC(O)=O BUZICZZQJDLXJN-UHFFFAOYSA-N 0.000 description 2
- HGINCPLSRVDWNT-UHFFFAOYSA-N Acrolein Chemical compound C=CC=O HGINCPLSRVDWNT-UHFFFAOYSA-N 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 2
- 229920001174 Diethylhydroxylamine Polymers 0.000 description 2
- BWGNESOTFCXPMA-UHFFFAOYSA-N Dihydrogen disulfide Chemical compound SS BWGNESOTFCXPMA-UHFFFAOYSA-N 0.000 description 2
- XTHFKEDIFFGKHM-UHFFFAOYSA-N Dimethoxyethane Chemical compound COCCOC XTHFKEDIFFGKHM-UHFFFAOYSA-N 0.000 description 2
- LCGLNKUTAGEVQW-UHFFFAOYSA-N Dimethyl ether Chemical compound COC LCGLNKUTAGEVQW-UHFFFAOYSA-N 0.000 description 2
- VZCYOOQTPOCHFL-OWOJBTEDSA-N Fumaric acid Chemical compound OC(=O)\C=C\C(O)=O VZCYOOQTPOCHFL-OWOJBTEDSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 2
- GYCMBHHDWRMZGG-UHFFFAOYSA-N Methylacrylonitrile Chemical compound CC(=C)C#N GYCMBHHDWRMZGG-UHFFFAOYSA-N 0.000 description 2
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 2
- YBGZDTIWKVFICR-JLHYYAGUSA-N Octyl 4-methoxycinnamic acid Chemical compound CCCCC(CC)COC(=O)\C=C\C1=CC=C(OC)C=C1 YBGZDTIWKVFICR-JLHYYAGUSA-N 0.000 description 2
- 229940123973 Oxygen scavenger Drugs 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 description 2
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- MOYAFQVGZZPNRA-UHFFFAOYSA-N Terpinolene Chemical compound CC(C)=C1CCC(C)=CC1 MOYAFQVGZZPNRA-UHFFFAOYSA-N 0.000 description 2
- 150000007513 acids Chemical class 0.000 description 2
- 150000001252 acrylic acid derivatives Chemical class 0.000 description 2
- 229910052783 alkali metal Inorganic materials 0.000 description 2
- 150000008055 alkyl aryl sulfonates Chemical class 0.000 description 2
- XXROGKLTLUQVRX-UHFFFAOYSA-N allyl alcohol Chemical compound OCC=C XXROGKLTLUQVRX-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 description 2
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 description 2
- 239000002518 antifoaming agent Substances 0.000 description 2
- AGPUJBVRLHNFTN-UHFFFAOYSA-N azane;chloroethane;formaldehyde Chemical compound N.O=C.CCCl AGPUJBVRLHNFTN-UHFFFAOYSA-N 0.000 description 2
- XUPYJHCZDLZNFP-UHFFFAOYSA-N butyl butanoate Chemical compound CCCCOC(=O)CCC XUPYJHCZDLZNFP-UHFFFAOYSA-N 0.000 description 2
- 239000002738 chelating agent Substances 0.000 description 2
- 239000000460 chlorine Substances 0.000 description 2
- 230000001112 coagulating effect Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- HGCIXCUEYOPUTN-UHFFFAOYSA-N cyclohexene Chemical compound C1CCC=CC1 HGCIXCUEYOPUTN-UHFFFAOYSA-N 0.000 description 2
- LPIQUOYDBNQMRZ-UHFFFAOYSA-N cyclopentene Chemical compound C1CC=CC1 LPIQUOYDBNQMRZ-UHFFFAOYSA-N 0.000 description 2
- ZQMIGQNCOMNODD-UHFFFAOYSA-N diacetyl peroxide Chemical compound CC(=O)OOC(C)=O ZQMIGQNCOMNODD-UHFFFAOYSA-N 0.000 description 2
- FVCOIAYSJZGECG-UHFFFAOYSA-N diethylhydroxylamine Chemical compound CCN(O)CC FVCOIAYSJZGECG-UHFFFAOYSA-N 0.000 description 2
- 239000002270 dispersing agent Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010556 emulsion polymerization method Methods 0.000 description 2
- WDAXFOBOLVPGLV-UHFFFAOYSA-N ethyl isobutyrate Chemical compound CCOC(=O)C(C)C WDAXFOBOLVPGLV-UHFFFAOYSA-N 0.000 description 2
- FKRCODPIKNYEAC-UHFFFAOYSA-N ethyl propionate Chemical compound CCOC(=O)CC FKRCODPIKNYEAC-UHFFFAOYSA-N 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 150000004665 fatty acids Chemical class 0.000 description 2
- 239000011790 ferrous sulphate Substances 0.000 description 2
- 235000003891 ferrous sulphate Nutrition 0.000 description 2
- 239000004088 foaming agent Substances 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 229920005555 halobutyl Polymers 0.000 description 2
- 150000008282 halocarbons Chemical class 0.000 description 2
- 230000002140 halogenating effect Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 229930195733 hydrocarbon Natural products 0.000 description 2
- 230000000977 initiatory effect Effects 0.000 description 2
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 description 2
- 229910000359 iron(II) sulfate Inorganic materials 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 description 2
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 2
- 239000012875 nonionic emulsifier Substances 0.000 description 2
- FDPIMTJIUBPUKL-UHFFFAOYSA-N pentan-3-one Chemical compound CCC(=O)CC FDPIMTJIUBPUKL-UHFFFAOYSA-N 0.000 description 2
- 229920001021 polysulfide Polymers 0.000 description 2
- 239000005077 polysulfide Substances 0.000 description 2
- 150000008117 polysulfides Polymers 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 235000019333 sodium laurylsulphate Nutrition 0.000 description 2
- 159000000000 sodium salts Chemical class 0.000 description 2
- 238000001256 steam distillation Methods 0.000 description 2
- 239000004094 surface-active agent Substances 0.000 description 2
- HJUGFYREWKUQJT-UHFFFAOYSA-N tetrabromomethane Chemical compound BrC(Br)(Br)Br HJUGFYREWKUQJT-UHFFFAOYSA-N 0.000 description 2
- CWERGRDVMFNCDR-UHFFFAOYSA-N thioglycolic acid Chemical compound OC(=O)CS CWERGRDVMFNCDR-UHFFFAOYSA-N 0.000 description 2
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 2
- 239000008096 xylene Substances 0.000 description 2
- RKQOSDAEEGPRER-UHFFFAOYSA-L zinc diethyldithiocarbamate Chemical compound [Zn+2].CCN(CC)C([S-])=S.CCN(CC)C([S-])=S RKQOSDAEEGPRER-UHFFFAOYSA-L 0.000 description 2
- 239000011787 zinc oxide Substances 0.000 description 2
- PMJHHCWVYXUKFD-SNAWJCMRSA-N (E)-1,3-pentadiene Chemical compound C\C=C\C=C PMJHHCWVYXUKFD-SNAWJCMRSA-N 0.000 description 1
- VMEZXMFPKOMWHR-UHFFFAOYSA-N (dimethylamino)methyl prop-2-enoate Chemical compound CN(C)COC(=O)C=C VMEZXMFPKOMWHR-UHFFFAOYSA-N 0.000 description 1
- UTOVMEACOLCUCK-SNAWJCMRSA-N (e)-4-butoxy-4-oxobut-2-enoic acid Chemical compound CCCCOC(=O)\C=C\C(O)=O UTOVMEACOLCUCK-SNAWJCMRSA-N 0.000 description 1
- XLYMOEINVGRTEX-ONEGZZNKSA-N (e)-4-ethoxy-4-oxobut-2-enoic acid Chemical compound CCOC(=O)\C=C\C(O)=O XLYMOEINVGRTEX-ONEGZZNKSA-N 0.000 description 1
- KYPOHTVBFVELTG-OWOJBTEDSA-N (e)-but-2-enedinitrile Chemical compound N#C\C=C\C#N KYPOHTVBFVELTG-OWOJBTEDSA-N 0.000 description 1
- USVVENVKYJZFMW-ONEGZZNKSA-N (e)-carboxyiminocarbamic acid Chemical compound OC(=O)\N=N\C(O)=O USVVENVKYJZFMW-ONEGZZNKSA-N 0.000 description 1
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- QKIAYRRGJHLRAQ-UHFFFAOYSA-N hexadecyl benzenesulfonate;sodium Chemical compound [Na].CCCCCCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 QKIAYRRGJHLRAQ-UHFFFAOYSA-N 0.000 description 1
- 150000004761 hexafluorosilicates Chemical class 0.000 description 1
- FUZZWVXGSFPDMH-UHFFFAOYSA-N hexanoic acid Chemical compound CCCCCC(O)=O FUZZWVXGSFPDMH-UHFFFAOYSA-N 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 125000002768 hydroxyalkyl group Chemical group 0.000 description 1
- 229910000378 hydroxylammonium sulfate Inorganic materials 0.000 description 1
- IIXGBDGCPUYARL-UHFFFAOYSA-N hydroxysulfamic acid Chemical compound ONS(O)(=O)=O IIXGBDGCPUYARL-UHFFFAOYSA-N 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000003999 initiator Substances 0.000 description 1
- 239000005453 ketone based solvent Substances 0.000 description 1
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 description 1
- 239000011976 maleic acid Substances 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- NKHAVTQWNUWKEO-IHWYPQMZSA-N methyl hydrogen fumarate Chemical compound COC(=O)\C=C/C(O)=O NKHAVTQWNUWKEO-IHWYPQMZSA-N 0.000 description 1
- BSDQITJYKQHXQR-UHFFFAOYSA-N methyl prop-2-eneperoxoate Chemical compound COOC(=O)C=C BSDQITJYKQHXQR-UHFFFAOYSA-N 0.000 description 1
- LVHBHZANLOWSRM-UHFFFAOYSA-N methylenebutanedioic acid Natural products OC(=O)CC(=C)C(O)=O LVHBHZANLOWSRM-UHFFFAOYSA-N 0.000 description 1
- DMEKUKDWAIXWSL-UHFFFAOYSA-N n,n-dimethyl-7-nitro-9h-fluoren-2-amine Chemical compound [O-][N+](=O)C1=CC=C2C3=CC=C(N(C)C)C=C3CC2=C1 DMEKUKDWAIXWSL-UHFFFAOYSA-N 0.000 description 1
- IUJLOAKJZQBENM-UHFFFAOYSA-N n-(1,3-benzothiazol-2-ylsulfanyl)-2-methylpropan-2-amine Chemical compound C1=CC=C2SC(SNC(C)(C)C)=NC2=C1 IUJLOAKJZQBENM-UHFFFAOYSA-N 0.000 description 1
- DEQZTKGFXNUBJL-UHFFFAOYSA-N n-(1,3-benzothiazol-2-ylsulfanyl)cyclohexanamine Chemical compound C1CCCCC1NSC1=NC2=CC=CC=C2S1 DEQZTKGFXNUBJL-UHFFFAOYSA-N 0.000 description 1
- YKYONYBAUNKHLG-UHFFFAOYSA-N n-Propyl acetate Natural products CCCOC(C)=O YKYONYBAUNKHLG-UHFFFAOYSA-N 0.000 description 1
- 125000005609 naphthenate group Chemical group 0.000 description 1
- ZWWQICJTBOCQLA-UHFFFAOYSA-N o-propan-2-yl (propan-2-yloxycarbothioyldisulfanyl)methanethioate Chemical compound CC(C)OC(=S)SSC(=S)OC(C)C ZWWQICJTBOCQLA-UHFFFAOYSA-N 0.000 description 1
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 1
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 1
- KZCOBXFFBQJQHH-UHFFFAOYSA-N octane-1-thiol Chemical compound CCCCCCCCS KZCOBXFFBQJQHH-UHFFFAOYSA-N 0.000 description 1
- SRSFOMHQIATOFV-UHFFFAOYSA-N octanoyl octaneperoxoate Chemical compound CCCCCCCC(=O)OOC(=O)CCCCCCC SRSFOMHQIATOFV-UHFFFAOYSA-N 0.000 description 1
- 150000001451 organic peroxides Chemical class 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 150000002989 phenols Chemical class 0.000 description 1
- 235000021317 phosphate Nutrition 0.000 description 1
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- KNBRWWCHBRQLNY-UHFFFAOYSA-N piperidine-1-carbothioylsulfanyl piperidine-1-carbodithioate Chemical compound C1CCCCN1C(=S)SSC(=S)N1CCCCC1 KNBRWWCHBRQLNY-UHFFFAOYSA-N 0.000 description 1
- PMJHHCWVYXUKFD-UHFFFAOYSA-N piperylene Natural products CC=CC=C PMJHHCWVYXUKFD-UHFFFAOYSA-N 0.000 description 1
- 229920002432 poly(vinyl methyl ether) polymer Polymers 0.000 description 1
- 239000004584 polyacrylic acid Substances 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 239000001103 potassium chloride Substances 0.000 description 1
- 235000011164 potassium chloride Nutrition 0.000 description 1
- 229940033623 potassium lauryl phosphate Drugs 0.000 description 1
- ONQDVAFWWYYXHM-UHFFFAOYSA-M potassium lauryl sulfate Chemical compound [K+].CCCCCCCCCCCCOS([O-])(=O)=O ONQDVAFWWYYXHM-UHFFFAOYSA-M 0.000 description 1
- 229940116985 potassium lauryl sulfate Drugs 0.000 description 1
- USHAGKDGDHPEEY-UHFFFAOYSA-L potassium persulfate Chemical compound [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O USHAGKDGDHPEEY-UHFFFAOYSA-L 0.000 description 1
- HSJXWMZKBLUOLQ-UHFFFAOYSA-M potassium;2-dodecylbenzenesulfonate Chemical compound [K+].CCCCCCCCCCCCC1=CC=CC=C1S([O-])(=O)=O HSJXWMZKBLUOLQ-UHFFFAOYSA-M 0.000 description 1
- PYJBVGYZXWPIKK-UHFFFAOYSA-M potassium;tetradecanoate Chemical compound [K+].CCCCCCCCCCCCCC([O-])=O PYJBVGYZXWPIKK-UHFFFAOYSA-M 0.000 description 1
- FZYCEURIEDTWNS-UHFFFAOYSA-N prop-1-en-2-ylbenzene Chemical compound CC(=C)C1=CC=CC=C1.CC(=C)C1=CC=CC=C1 FZYCEURIEDTWNS-UHFFFAOYSA-N 0.000 description 1
- HJWLCRVIBGQPNF-UHFFFAOYSA-N prop-2-enylbenzene Chemical compound C=CCC1=CC=CC=C1 HJWLCRVIBGQPNF-UHFFFAOYSA-N 0.000 description 1
- 229940090181 propyl acetate Drugs 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- JTDPJYXDDYUJBS-UHFFFAOYSA-N quinoline-2-carbohydrazide Chemical compound C1=CC=CC2=NC(C(=O)NN)=CC=C21 JTDPJYXDDYUJBS-UHFFFAOYSA-N 0.000 description 1
- 238000007717 redox polymerization reaction Methods 0.000 description 1
- XWGJFPHUCFXLBL-UHFFFAOYSA-M rongalite Chemical compound [Na+].OCS([O-])=O XWGJFPHUCFXLBL-UHFFFAOYSA-M 0.000 description 1
- 239000000344 soap Substances 0.000 description 1
- 239000000661 sodium alginate Substances 0.000 description 1
- 235000010413 sodium alginate Nutrition 0.000 description 1
- 229940005550 sodium alginate Drugs 0.000 description 1
- 235000017557 sodium bicarbonate Nutrition 0.000 description 1
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- APSBXTVYXVQYAB-UHFFFAOYSA-M sodium docusate Chemical compound [Na+].CCCCC(CC)COC(=O)CC(S([O-])(=O)=O)C(=O)OCC(CC)CCCC APSBXTVYXVQYAB-UHFFFAOYSA-M 0.000 description 1
- BTURAGWYSMTVOW-UHFFFAOYSA-M sodium dodecanoate Chemical compound [Na+].CCCCCCCCCCCC([O-])=O BTURAGWYSMTVOW-UHFFFAOYSA-M 0.000 description 1
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 description 1
- 229940082004 sodium laurate Drugs 0.000 description 1
- 229940045870 sodium palmitate Drugs 0.000 description 1
- CHQMHPLRPQMAMX-UHFFFAOYSA-L sodium persulfate Substances [Na+].[Na+].[O-]S(=O)(=O)OOS([O-])(=O)=O CHQMHPLRPQMAMX-UHFFFAOYSA-L 0.000 description 1
- UNZSHUCNBUBSGW-IFNWOZJISA-M sodium;(9z,12z,15z)-octadeca-9,12,15-trienoate Chemical compound [Na+].CC\C=C/C\C=C/C\C=C/CCCCCCCC([O-])=O UNZSHUCNBUBSGW-IFNWOZJISA-M 0.000 description 1
- RLJSXMVTLMHXJS-UHFFFAOYSA-M sodium;4-decylbenzenesulfonate Chemical compound [Na+].CCCCCCCCCCC1=CC=C(S([O-])(=O)=O)C=C1 RLJSXMVTLMHXJS-UHFFFAOYSA-M 0.000 description 1
- GGXKEBACDBNFAF-UHFFFAOYSA-M sodium;hexadecanoate Chemical compound [Na+].CCCCCCCCCCCCCCCC([O-])=O GGXKEBACDBNFAF-UHFFFAOYSA-M 0.000 description 1
- KKVTYAVXTDIPAP-UHFFFAOYSA-M sodium;methanesulfonate Chemical compound [Na+].CS([O-])(=O)=O KKVTYAVXTDIPAP-UHFFFAOYSA-M 0.000 description 1
- 239000008117 stearic acid Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- QAZLUNIWYYOJPC-UHFFFAOYSA-M sulfenamide Chemical compound [Cl-].COC1=C(C)C=[N+]2C3=NC4=CC=C(OC)C=C4N3SCC2=C1C QAZLUNIWYYOJPC-UHFFFAOYSA-M 0.000 description 1
- FWMUJAIKEJWSSY-UHFFFAOYSA-N sulfur dichloride Chemical compound ClSCl FWMUJAIKEJWSSY-UHFFFAOYSA-N 0.000 description 1
- 229940052367 sulfur,colloidal Drugs 0.000 description 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
- CIHOLLKRGTVIJN-UHFFFAOYSA-N tert‐butyl hydroperoxide Chemical compound CC(C)(C)OO CIHOLLKRGTVIJN-UHFFFAOYSA-N 0.000 description 1
- UEUXEKPTXMALOB-UHFFFAOYSA-J tetrasodium;2-[2-[bis(carboxylatomethyl)amino]ethyl-(carboxylatomethyl)amino]acetate Chemical compound [Na+].[Na+].[Na+].[Na+].[O-]C(=O)CN(CC([O-])=O)CCN(CC([O-])=O)CC([O-])=O UEUXEKPTXMALOB-UHFFFAOYSA-J 0.000 description 1
- 239000002562 thickening agent Substances 0.000 description 1
- NJRXVEJTAYWCQJ-UHFFFAOYSA-N thiomalic acid Chemical compound OC(=O)CC(S)C(O)=O NJRXVEJTAYWCQJ-UHFFFAOYSA-N 0.000 description 1
- NQPDZGIKBAWPEJ-UHFFFAOYSA-N valeric acid Chemical compound CCCCC(O)=O NQPDZGIKBAWPEJ-UHFFFAOYSA-N 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 239000004711 α-olefin Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/02—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/30—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof by mixing gases into liquid compositions or plastisols, e.g. frothing with air
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/18—Homopolymers or copolymers of hydrocarbons having four or more carbon atoms
- C08L23/20—Homopolymers or copolymers of hydrocarbons having four or more carbon atoms having four to nine carbon atoms
- C08L23/22—Copolymers of isobutene; Butyl rubber ; Homo- or copolymers of other iso-olefins
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L9/00—Compositions of homopolymers or copolymers of conjugated diene hydrocarbons
- C08L9/02—Copolymers with acrylonitrile
- C08L9/04—Latex
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Dispersion Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Description
前記ブチルゴム中における、イソブチレン単位の含有割合が95モル%以上であることが好ましい。
前記ブチルゴムのムーニー粘度(ML1+8、125℃)が20~70であることが好ましい。
前記ニトリル基含有共役ジエン系共重合体中における、エチレン性不飽和ニトリル単量体単位の含有割合が5~80重量%であることが好ましい。
本発明のラテックス組成物は、気泡安定剤をさらに含有することが好ましい。
さらに、本発明によれば、上記のラテックス、または上記のラテックス組成物を用いて得られるフォームラバーが提供される。
本発明のラテックスは、ブチルゴム、ニトリル基含有共役ジエン系共重合体、および水を含む。
本発明のラテックスは、たとえば、ブチルゴムのラテックスと、ニトリル基含有共役ジエン系共重合体のラテックスとをブレンドすることで製造することができる。
本発明のラテックス組成物は、上述した本発明のラテックスと、架橋剤とを含有する。
架橋促進剤としては、フォームラバーなどの、ラテックス組成物を用いて得られる成形体の製造において通常用いられるものが使用でき、たとえば、ジエチルジチオカルバミン酸、ジブチルジチオカルバミン酸、ジ-2-エチルヘキシルジチオカルバミン酸、ジシクロヘキシルジチオカルバミン酸、ジフェニルジチオカルバミン酸、ジベンジルジチオカルバミン酸などのジチオカルバミン酸類およびそれらの亜鉛塩などのジチオカルバミン酸系架橋促進剤;2-メルカプトベンゾチアゾール、2-メルカプトベンゾチアゾール亜鉛、2-メルカプトチアゾリン、ジベンゾチアジル・ジスルフィド、2-(2,4-ジニトロフェニルチオ)ベンゾチアゾール、2-(N,N-ジエチルチオ・カルバイルチオ)ベンゾチアゾール、2-(2,6-ジメチル-4-モルホリノチオ)ベンゾチアゾール、2-(4′-モルホリノ・ジチオ)ベンゾチアゾールなどのチアゾール系架橋促進剤;TMTD(テトラメチルチウラムジスルフィド)、テトラエチルチウラムジスルフィド、テトラメチルチウラムモノスルフィド、ジペンタメチレンチウラムジスルフィド等のチウラム系化合物;N-シクロヘキシル-2-ベンゾチアジルスルフェンアミド、N-t-ブチル-2-ベンゾチアゾールスルフェンアミド、N-オキシエチレン-2-ベンゾチアゾールスルフェンアミド、N-オキシエチレン-2-ベンゾチアゾールスルフェンアミド、N,N’-ジイソプロピル-2-ベンゾチアゾールスルフェンアミドなどのスルフェンアミド系架橋促進剤;などが挙げられる。架橋促進剤は、1種単独で、あるいは2種以上を組み合わせて用いることができる。
架橋助剤としては、フォームラバーなどの、ラテックス組成物を用いて得られる成形体の製造において通常用いられるものが使用でき、たとえば、酸化亜鉛、ステアリン酸およびその亜鉛塩等が挙げられる。
本発明の成形体は、上述したラテックスまたはラテックス組成物を用いて得られる。
JIS K6384に従い、ケルダール法により、ニトリル基含有共役ジエン系共重合体中の窒素含量を測定することにより算出した。
アルミ皿(重量:X1)に試料2gを精秤し(重量:X2)、これを105℃の熱風乾燥器内で2時間乾燥させた。次いで、デシケーター内で冷却した後、アルミ皿ごと重量を測定し(重量:X3)、下記の計算式にしたがって、固形分濃度を算出した。
固形分濃度(重量%)=(X3-X1)×100/X2
光散乱回折粒径測定装置(型式「LS-13320」、ベックマンコールター社製)を用いて、ラテックスの体積基準の粒子径の分布を測定した。得られた体積基準の粒子径分布に基づき、体積累積粒径d50を求めた。
フォームラバー用ラテックス組成物を、スタンドミキサー(エレクトロラックス社製、ESM945)を用いて攪拌することで発泡させ、体積が攪拌前の体積に対して5.0倍に達するまでの時間を求めた。
発泡物82mlを容器に投入し、重量を測定した。
次式により、発泡物1gあたりの体積を、比容積として求めた。
比容積(ml/g)=82ml/(発泡物82mlの重量(g))
発泡物の比容積は、フォームラバー用ラテックス組成物の発泡の程度を示し、大きいほど発泡倍率が高いことを意味する。
発泡物に、珪フッ化ナトリウム水分散液(固形分濃度20重量%)を、得られた発泡物中の重合体100部に対する珪フッ化ナトリウムの添加量が1.5部となるように添加し、さらに1分間撹拌することで、ゲル化性発泡物を得た。ゲル化性発泡物を得てから、ゲル化性発泡物を手で触れてもゲル化性発泡物が付着しなくなるまでの時間を求めた。
全ての実施例および比較例において、同じ形状のシャーレを用いた。発泡物に、珪フッ化ナトリウム水分散液(固形分濃度20重量%)を、得られた発泡物中の重合体100部に対する珪フッ化ナトリウムの添加量が1.5部となるように添加し、さらに1分間撹拌することで、ゲル化性発泡物を得た。予め決定した高さ(すなわち架橋前の発泡物の高さ)まで、ゲル化性発泡物をシャーレに流し入れ、110℃で、表1に記載の架橋時間で架橋させ、得られた架橋物の高さを測定し、次式により収縮率を求めた。
収縮率(%)=[(架橋物の高さ)-(架橋前の発泡物の高さ)]/(架橋前の発泡物の高さ)×100
上記により求めた収縮率について、以下の基準で評価した。
LEVEL4:収縮率が0%以下-10%以上であった。
LEVEL3:収縮率が-10%未満-50%以上であった。
LEVEL2:収縮率が-50%未満-70%以上であった。
LEVEL1:収縮率が-70%未満-100%以上であった。
フォームラバーを、紫外線吸収剤(4-メトキシけい皮酸2-エチルヘキシル、東京化成工業社製)に、23℃で24時間浸漬させ、浸漬前のフォームラバーの体積に対する、浸漬後のフォームラバーの体積の比率(膨潤率(%)=(浸漬後のフォームラバーの体積)/(浸漬前のフォームラバーの体積)×100)を算出した。なお、膨潤率が低いほど、紫外線吸収剤に対する耐油性に優れると判断できる。
フォームラバーを、流動パラフィンに、23℃で24時間浸漬させ、浸漬前のフォームラバーの体積に対する、浸漬後のフォームラバーの体積の比率(膨潤率(%)=(浸漬後のフォームラバーの体積)/(浸漬前のフォームラバーの体積)×100)を算出した。なお、膨潤率が低いほど、流動パラフィンに対する耐油性に優れると判断できる。
ブチルゴム(製品名「JSR BUTYL365」、JSR社製、ムーニー粘度(ML1+8、125℃):33、不飽和度2.3モル%)100部を、シクロヘキサン550部と混合し、攪拌しながら温度を60℃に昇温させることで、ブチルゴムを溶解させて、ブチルゴムの溶液を得た。
これとは別に、オレイン酸カリウムと水とを混合することで、15重量%のオレイン酸カリウム水溶液を得た。
耐圧反応容器に、水200部、オレイン酸カリウム1.5部、アクリロニトリル38部、t-ドデシルメルカプタン0.5部、ソジウムホルムアルデヒドスルホキシレート0.03部、硫酸第一鉄0.003部、エチレンジアミン四酢酸・ナトリウム0.008部を添加し、十分に脱気した後、1,3-ブタジエン45部およびイソプレン17部を添加した。
調製例1で得られたブチルゴムのラテックスと、調製例2で得られたニトリル基含有共役ジエン系共重合体のラテックスとを、「ブチルゴム:ニトリル基含有共役ジエン系共重合体」の固形分重量比が、67:33となるように混合し、フォームラバー用ラテックスを得た。得られたフォームラバー用ラテックスについて、上記方法にしたがって固形分濃度を測定した。結果を表1に示す。
加硫系水分散液Aに代えて、加硫系水分散液B(コロイド硫黄/ジチオカルバミン酸系架橋促進剤(ジエチルジチオカルバミン酸亜鉛(製品名「ノクセラーEZ」、大内新興化学工業社製))/チアゾール系架橋促進剤(2-メルカプトベンゾチアゾールの亜鉛塩(製品名「ノクセラーMZ」、大内新興化学工業社製))/チウラム系加橋促進剤(テトラメチルチウラムジスルフィド(製品名「ノクセラーTT」、大内新興化学工業社製))=1/2/1/1(重量比)、固形分濃度50重量%)20部を用いた以外は、実施例1と同様にして、フォームラバー用ラテックス組成物およびフォームラバーを得て、実施例1と同様に評価した。結果を表1に示す。
調製例1で得られたブチルゴムのラテックスと、調製例2で得られたニトリル基含有共役ジエン系共重合体のラテックスとを、「ブチルゴム:ニトリル基含有共役ジエン系共重合体」の固形分重量比が、50:50となるように混合した以外は、実施例2と同様にして、フォームラバー用ラテックス、フォームラバー用ラテックス組成物およびフォームラバーを得て、実施例1と同様に評価した。結果を表1に示す。
フォームラバー用ラテックスとして、調製例2で得られたニトリル基含有共役ジエン系共重合体のラテックスを用いた以外は、実施例1と同様にして、フォームラバー用ラテックス組成物およびフォームラバーを得て、実施例1と同様に評価した。結果を表1に示す。
調製例1で得られたブチルゴムのラテックスと、調製例2で得られたニトリル基含有共役ジエン系共重合体のラテックスとを、「ブチルゴム:ニトリル基含有共役ジエン系共重合体」の固形分重量比が、90:10となるように混合した以外は、実施例2と同様にして、フォームラバー用ラテックス、フォームラバー用ラテックス組成物およびフォームラバーを得て、実施例1と同様に評価した。結果を表1に示す。
一方、ブチルゴムを含有しないフォームラバー用ラテックスを用いて得られたフォームラバーは、紫外線吸収剤に対する膨潤率が高く、耐油性に劣るものであった(比較例1)。
また、ニトリル基含有共役ジエン系共重合体が少なすぎるフォームラバー用ラテックスを用いた場合は、ゲル化に要する時間が長く、得られたフォームラバーは耐油性に劣るものであった(比較例2)。
Claims (7)
- ブチルゴム、ニトリル基含有共役ジエン系共重合体、アニオン性乳化剤および水を含み、前記ブチルゴムと前記ニトリル基含有共役ジエン系共重合体の重量比が85:15~10:90であるラテックスであって、
前記ブチルゴム中における、イソブチレン単位の含有割合が95モル%以上であり、
前記ニトリル基含有共役ジエン系共重合体中における、エチレン性不飽和ニトリル単量体単位の含有割合が5~80重量%である
ラテックス。 - 前記ブチルゴムのムーニー粘度(ML1+8、125℃)が20~70である請求項1に記載のラテックス。
- 請求項1または2に記載のラテックスと、架橋剤とを含有するラテックス組成物。
- 架橋促進剤をさらに含有する請求項3に記載のラテックス組成物。
- 気泡安定剤をさらに含有する請求項3または4に記載のラテックス組成物。
- 請求項1または2に記載のラテックス、または請求項3~5のいずれかに記載のラテックス組成物を用いて得られる成形体。
- 請求項1または2に記載のラテックス、または請求項3~5のいずれかに記載のラテックス組成物を用いて得られるフォームラバー。
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