JP5937430B2 - ゴム組成物及び空気入りタイヤ - Google Patents
ゴム組成物及び空気入りタイヤ Download PDFInfo
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- JP5937430B2 JP5937430B2 JP2012132265A JP2012132265A JP5937430B2 JP 5937430 B2 JP5937430 B2 JP 5937430B2 JP 2012132265 A JP2012132265 A JP 2012132265A JP 2012132265 A JP2012132265 A JP 2012132265A JP 5937430 B2 JP5937430 B2 JP 5937430B2
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- 229920001971 elastomer Polymers 0.000 title claims description 49
- 239000005060 rubber Substances 0.000 title claims description 49
- 239000000203 mixture Substances 0.000 title claims description 48
- 229920000642 polymer Polymers 0.000 claims description 57
- 229920002959 polymer blend Polymers 0.000 claims description 56
- 150000002430 hydrocarbons Chemical group 0.000 claims description 48
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 47
- 150000001875 compounds Chemical class 0.000 claims description 47
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims description 45
- -1 diene compound Chemical class 0.000 claims description 44
- 229920003048 styrene butadiene rubber Polymers 0.000 claims description 30
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 29
- 125000004432 carbon atom Chemical group C* 0.000 claims description 23
- 239000000377 silicon dioxide Substances 0.000 claims description 23
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 claims description 19
- 229920002554 vinyl polymer Polymers 0.000 claims description 19
- 125000003118 aryl group Chemical group 0.000 claims description 18
- 229920006395 saturated elastomer Polymers 0.000 claims description 18
- 229930195734 saturated hydrocarbon Natural products 0.000 claims description 18
- 229930195735 unsaturated hydrocarbon Natural products 0.000 claims description 18
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims description 15
- 239000002174 Styrene-butadiene Substances 0.000 claims description 13
- 238000004519 manufacturing process Methods 0.000 claims description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 5
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical compound C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 claims description 4
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 4
- 230000000379 polymerizing effect Effects 0.000 claims description 4
- 239000011115 styrene butadiene Substances 0.000 claims description 4
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- 125000004430 oxygen atom Chemical group O* 0.000 claims description 3
- 229920002587 poly(1,3-butadiene) polymer Polymers 0.000 claims description 3
- 238000000034 method Methods 0.000 description 45
- 239000000446 fuel Substances 0.000 description 23
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical class C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 description 18
- 239000003607 modifier Substances 0.000 description 13
- 125000000217 alkyl group Chemical group 0.000 description 12
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 12
- JOXIMZWYDAKGHI-UHFFFAOYSA-N p-toluenesulfonic acid Substances CC1=CC=C(S(O)(=O)=O)C=C1 JOXIMZWYDAKGHI-UHFFFAOYSA-N 0.000 description 12
- 239000003795 chemical substances by application Substances 0.000 description 11
- 239000000126 substance Substances 0.000 description 11
- MZRVEZGGRBJDDB-UHFFFAOYSA-N N-Butyllithium Chemical compound [Li]CCCC MZRVEZGGRBJDDB-UHFFFAOYSA-N 0.000 description 10
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 10
- 238000005299 abrasion Methods 0.000 description 9
- 239000000178 monomer Substances 0.000 description 9
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 8
- 125000004093 cyano group Chemical group *C#N 0.000 description 8
- 238000006116 polymerization reaction Methods 0.000 description 8
- 238000005096 rolling process Methods 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 7
- 229920001577 copolymer Polymers 0.000 description 7
- 125000004185 ester group Chemical group 0.000 description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 6
- 238000009472 formulation Methods 0.000 description 6
- 238000003756 stirring Methods 0.000 description 6
- 239000004215 Carbon black (E152) Substances 0.000 description 5
- 244000043261 Hevea brasiliensis Species 0.000 description 5
- 239000005062 Polybutadiene Substances 0.000 description 5
- 239000006087 Silane Coupling Agent Substances 0.000 description 5
- 238000010539 anionic addition polymerization reaction Methods 0.000 description 5
- 230000003712 anti-aging effect Effects 0.000 description 5
- PXBRQCKWGAHEHS-UHFFFAOYSA-N dichlorodifluoromethane Chemical compound FC(F)(Cl)Cl PXBRQCKWGAHEHS-UHFFFAOYSA-N 0.000 description 5
- 229930195733 hydrocarbon Natural products 0.000 description 5
- 229920003052 natural elastomer Polymers 0.000 description 5
- 229920001194 natural rubber Polymers 0.000 description 5
- 125000001147 pentyl group Chemical group C(CCCC)* 0.000 description 5
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 5
- 229920002857 polybutadiene Polymers 0.000 description 5
- 239000000047 product Substances 0.000 description 5
- 238000010791 quenching Methods 0.000 description 5
- 239000002904 solvent Substances 0.000 description 5
- HRVQMQWVGKYDCF-UHFFFAOYSA-N 2-Acetyl-4-methylpyridine Chemical compound CC(=O)C1=CC(C)=CC=N1 HRVQMQWVGKYDCF-UHFFFAOYSA-N 0.000 description 4
- WEGYGNROSJDEIW-UHFFFAOYSA-N 3-Acetylpyridine Chemical compound CC(=O)C1=CC=CN=C1 WEGYGNROSJDEIW-UHFFFAOYSA-N 0.000 description 4
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- RRHGJUQNOFWUDK-UHFFFAOYSA-N Isoprene Chemical compound CC(=C)C=C RRHGJUQNOFWUDK-UHFFFAOYSA-N 0.000 description 4
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-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
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 4
- 150000001244 carboxylic acid anhydrides Chemical class 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 150000002148 esters Chemical class 0.000 description 4
- 238000010528 free radical solution polymerization reaction Methods 0.000 description 4
- 125000000623 heterocyclic group Chemical group 0.000 description 4
- 238000006011 modification reaction Methods 0.000 description 4
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 4
- 150000002900 organolithium compounds Chemical class 0.000 description 4
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 4
- 230000000171 quenching effect Effects 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- CYRMSUTZVYGINF-UHFFFAOYSA-N trichlorofluoromethane Chemical compound FC(Cl)(Cl)Cl CYRMSUTZVYGINF-UHFFFAOYSA-N 0.000 description 4
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 4
- 238000004073 vulcanization Methods 0.000 description 4
- NHUBNHMFXQNNMV-UHFFFAOYSA-N 2-ethynylpyridine Chemical compound C#CC1=CC=CC=N1 NHUBNHMFXQNNMV-UHFFFAOYSA-N 0.000 description 3
- FKBMTBAXDISZGN-UHFFFAOYSA-N 5-methyl-3a,4,5,6,7,7a-hexahydro-2-benzofuran-1,3-dione Chemical compound C1C(C)CCC2C(=O)OC(=O)C12 FKBMTBAXDISZGN-UHFFFAOYSA-N 0.000 description 3
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- OFOBLEOULBTSOW-UHFFFAOYSA-N Malonic acid Chemical compound OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- KWYHDKDOAIKMQN-UHFFFAOYSA-N N,N,N',N'-tetramethylethylenediamine Chemical compound CN(C)CCN(C)C KWYHDKDOAIKMQN-UHFFFAOYSA-N 0.000 description 3
- SJRJJKPEHAURKC-UHFFFAOYSA-N N-Methylmorpholine Chemical compound CN1CCOCC1 SJRJJKPEHAURKC-UHFFFAOYSA-N 0.000 description 3
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 3
- 235000021355 Stearic acid Nutrition 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 description 3
- 125000002777 acetyl group Chemical group [H]C([H])([H])C(*)=O 0.000 description 3
- 125000001797 benzyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])* 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 230000000740 bleeding effect Effects 0.000 description 3
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 description 3
- 125000000524 functional group Chemical group 0.000 description 3
- MCQOWYALZVKMAR-UHFFFAOYSA-N furo[3,4-b]pyridine-5,7-dione Chemical compound C1=CC=C2C(=O)OC(=O)C2=N1 MCQOWYALZVKMAR-UHFFFAOYSA-N 0.000 description 3
- 125000004051 hexyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 3
- 239000003999 initiator Substances 0.000 description 3
- 150000002642 lithium compounds Chemical class 0.000 description 3
- OBWFJXLKRAFEDI-UHFFFAOYSA-N methyl cyanoformate Chemical compound COC(=O)C#N OBWFJXLKRAFEDI-UHFFFAOYSA-N 0.000 description 3
- OLXYLDUSSBULGU-UHFFFAOYSA-N methyl pyridine-4-carboxylate Chemical compound COC(=O)C1=CC=NC=C1 OLXYLDUSSBULGU-UHFFFAOYSA-N 0.000 description 3
- 238000002715 modification method Methods 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 3
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 3
- 239000003960 organic solvent Substances 0.000 description 3
- 239000003505 polymerization initiator Substances 0.000 description 3
- IIHQNAXFIODVDU-UHFFFAOYSA-N pyrimidine-2-carbonitrile Chemical compound N#CC1=NC=CC=N1 IIHQNAXFIODVDU-UHFFFAOYSA-N 0.000 description 3
- 125000000714 pyrimidinyl group Chemical group 0.000 description 3
- 150000003254 radicals Chemical class 0.000 description 3
- 239000008117 stearic acid Substances 0.000 description 3
- 229910052717 sulfur Inorganic materials 0.000 description 3
- 239000011593 sulfur Substances 0.000 description 3
- 238000003786 synthesis reaction Methods 0.000 description 3
- ISXSCDLOGDJUNJ-UHFFFAOYSA-N tert-butyl prop-2-enoate Chemical compound CC(C)(C)OC(=O)C=C ISXSCDLOGDJUNJ-UHFFFAOYSA-N 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- JYEUMXHLPRZUAT-UHFFFAOYSA-N 1,2,3-triazine Chemical group C1=CN=NN=C1 JYEUMXHLPRZUAT-UHFFFAOYSA-N 0.000 description 2
- MYRTYDVEIRVNKP-UHFFFAOYSA-N 1,2-Divinylbenzene Chemical compound C=CC1=CC=CC=C1C=C MYRTYDVEIRVNKP-UHFFFAOYSA-N 0.000 description 2
- VXNZUUAINFGPBY-UHFFFAOYSA-N 1-Butene Chemical compound CCC=C VXNZUUAINFGPBY-UHFFFAOYSA-N 0.000 description 2
- LIKMAJRDDDTEIG-UHFFFAOYSA-N 1-hexene Chemical compound CCCCC=C LIKMAJRDDDTEIG-UHFFFAOYSA-N 0.000 description 2
- WMQUKDQWMMOHSA-UHFFFAOYSA-N 1-pyridin-4-ylethanone Chemical compound CC(=O)C1=CC=NC=C1 WMQUKDQWMMOHSA-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
- LCZUOKDVTBMCMX-UHFFFAOYSA-N 2,5-Dimethylpyrazine Chemical compound CC1=CN=C(C)C=N1 LCZUOKDVTBMCMX-UHFFFAOYSA-N 0.000 description 2
- 239000001934 2,5-dimethylpyrazine Substances 0.000 description 2
- QDWOWLUANUBTGE-UHFFFAOYSA-N 2,6-Diethylpyrazine Chemical compound CCC1=CN=CC(CC)=N1 QDWOWLUANUBTGE-UHFFFAOYSA-N 0.000 description 2
- HJFZAYHYIWGLNL-UHFFFAOYSA-N 2,6-Dimethylpyrazine Chemical compound CC1=CN=CC(C)=N1 HJFZAYHYIWGLNL-UHFFFAOYSA-N 0.000 description 2
- 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 2
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 2
- JZBCTZLGKSYRSF-UHFFFAOYSA-N 2-Ethyl-3,5-dimethylpyrazine Chemical compound CCC1=NC=C(C)N=C1C JZBCTZLGKSYRSF-UHFFFAOYSA-N 0.000 description 2
- RYPKRALMXUUNKS-UHFFFAOYSA-N 2-Hexene Natural products CCCC=CC RYPKRALMXUUNKS-UHFFFAOYSA-N 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 2
- DBZAKQWXICEWNW-UHFFFAOYSA-N 2-acetylpyrazine Chemical compound CC(=O)C1=CN=CC=N1 DBZAKQWXICEWNW-UHFFFAOYSA-N 0.000 description 2
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- BXGYBSJAZFGIPX-UHFFFAOYSA-N 2-pyridin-2-ylethanol Chemical compound OCCC1=CC=CC=N1 BXGYBSJAZFGIPX-UHFFFAOYSA-N 0.000 description 2
- MVQVNTPHUGQQHK-UHFFFAOYSA-N 3-pyridinemethanol Chemical compound OCC1=CC=CN=C1 MVQVNTPHUGQQHK-UHFFFAOYSA-N 0.000 description 2
- NLZUEZXRPGMBCV-UHFFFAOYSA-N Butylhydroxytoluene Chemical compound CC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 NLZUEZXRPGMBCV-UHFFFAOYSA-N 0.000 description 2
- YNQLUTRBYVCPMQ-UHFFFAOYSA-N Ethylbenzene Chemical compound CCC1=CC=CC=C1 YNQLUTRBYVCPMQ-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
- VQTUBCCKSQIDNK-UHFFFAOYSA-N Isobutene Chemical compound CC(C)=C VQTUBCCKSQIDNK-UHFFFAOYSA-N 0.000 description 2
- 229920000459 Nitrile rubber Polymers 0.000 description 2
- OFBQJSOFQDEBGM-UHFFFAOYSA-N Pentane Chemical compound CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 2
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 2
- QQONPFPTGQHPMA-UHFFFAOYSA-N Propene Chemical compound CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 2
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 2
- FINHMKGKINIASC-UHFFFAOYSA-N Tetramethylpyrazine Chemical compound CC1=NC(C)=C(C)N=C1C FINHMKGKINIASC-UHFFFAOYSA-N 0.000 description 2
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 description 2
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- 239000006229 carbon black Substances 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 239000007795 chemical reaction product Substances 0.000 description 2
- OPTASPLRGRRNAP-UHFFFAOYSA-N cytosine Chemical compound NC=1C=CNC(=O)N=1 OPTASPLRGRRNAP-UHFFFAOYSA-N 0.000 description 2
- 125000002704 decyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 2
- 125000003438 dodecyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 2
- 238000005227 gel permeation chromatography Methods 0.000 description 2
- 125000003187 heptyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- NNPPMTNAJDCUHE-UHFFFAOYSA-N isobutane Chemical compound CC(C)C NNPPMTNAJDCUHE-UHFFFAOYSA-N 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
- QWTDNUCVQCZILF-UHFFFAOYSA-N isopentane Chemical compound CCC(C)C QWTDNUCVQCZILF-UHFFFAOYSA-N 0.000 description 2
- 229920003049 isoprene rubber Polymers 0.000 description 2
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 2
- WGOPGODQLGJZGL-UHFFFAOYSA-N lithium;butane Chemical compound [Li+].CC[CH-]C WGOPGODQLGJZGL-UHFFFAOYSA-N 0.000 description 2
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 description 2
- YNBADRVTZLEFNH-UHFFFAOYSA-N methyl nicotinate Chemical compound COC(=O)C1=CC=CN=C1 YNBADRVTZLEFNH-UHFFFAOYSA-N 0.000 description 2
- CAWHJQAVHZEVTJ-UHFFFAOYSA-N methylpyrazine Chemical compound CC1=CN=CC=N1 CAWHJQAVHZEVTJ-UHFFFAOYSA-N 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 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
- BDJRBEYXGGNYIS-UHFFFAOYSA-N nonanedioic acid Chemical compound OC(=O)CCCCCCCC(O)=O BDJRBEYXGGNYIS-UHFFFAOYSA-N 0.000 description 2
- 125000002347 octyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 2
- 125000000913 palmityl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 2
- YWAKXRMUMFPDSH-UHFFFAOYSA-N pentene Chemical compound CCCC=C YWAKXRMUMFPDSH-UHFFFAOYSA-N 0.000 description 2
- QMMOXUPEWRXHJS-UHFFFAOYSA-N pentene-2 Natural products CCC=CC QMMOXUPEWRXHJS-UHFFFAOYSA-N 0.000 description 2
- 229920001084 poly(chloroprene) Polymers 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 125000003373 pyrazinyl group Chemical group 0.000 description 2
- PBMFSQRYOILNGV-UHFFFAOYSA-N pyridazine Chemical group C1=CC=NN=C1 PBMFSQRYOILNGV-UHFFFAOYSA-N 0.000 description 2
- PTMBWNZJOQBTBK-UHFFFAOYSA-N pyridin-4-ylmethanol Chemical compound OCC1=CC=NC=C1 PTMBWNZJOQBTBK-UHFFFAOYSA-N 0.000 description 2
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- CXMXRPHRNRROMY-UHFFFAOYSA-N sebacic acid Chemical compound OC(=O)CCCCCCCCC(O)=O CXMXRPHRNRROMY-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
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 2
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- LEKSIJZGSFETSJ-UHFFFAOYSA-N cyclohexane;lithium Chemical compound [Li]C1CCCCC1 LEKSIJZGSFETSJ-UHFFFAOYSA-N 0.000 description 1
- 229940104302 cytosine Drugs 0.000 description 1
- AZZCHVHSWUYCQA-UHFFFAOYSA-N decyl carbonochloridate Chemical compound CCCCCCCCCCOC(Cl)=O AZZCHVHSWUYCQA-UHFFFAOYSA-N 0.000 description 1
- 239000003398 denaturant Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 229920003244 diene elastomer Polymers 0.000 description 1
- 125000002897 diene group Chemical group 0.000 description 1
- SBZXBUIDTXKZTM-UHFFFAOYSA-N diglyme Chemical compound COCCOCCOC SBZXBUIDTXKZTM-UHFFFAOYSA-N 0.000 description 1
- 239000000539 dimer Substances 0.000 description 1
- AFABGHUZZDYHJO-UHFFFAOYSA-N dimethyl butane Natural products CCCC(C)C AFABGHUZZDYHJO-UHFFFAOYSA-N 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000007720 emulsion polymerization reaction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 150000002170 ethers Chemical class 0.000 description 1
- FQTIYMRSUOADDK-UHFFFAOYSA-N ethyl 3-bromopropanoate Chemical compound CCOC(=O)CCBr FQTIYMRSUOADDK-UHFFFAOYSA-N 0.000 description 1
- XBPOBCXHALHJFP-UHFFFAOYSA-N ethyl 4-bromobutanoate Chemical compound CCOC(=O)CCCBr XBPOBCXHALHJFP-UHFFFAOYSA-N 0.000 description 1
- AFRWBGJRWRHQOV-UHFFFAOYSA-N ethyl 5-bromopentanoate Chemical compound CCOC(=O)CCCCBr AFRWBGJRWRHQOV-UHFFFAOYSA-N 0.000 description 1
- DXBULVYHTICWKT-UHFFFAOYSA-N ethyl 6-bromohexanoate Chemical compound CCOC(=O)CCCCCBr DXBULVYHTICWKT-UHFFFAOYSA-N 0.000 description 1
- PQJJJMRNHATNKG-UHFFFAOYSA-N ethyl bromoacetate Chemical compound CCOC(=O)CBr PQJJJMRNHATNKG-UHFFFAOYSA-N 0.000 description 1
- RIFGWPKJUGCATF-UHFFFAOYSA-N ethyl chloroformate Chemical compound CCOC(Cl)=O RIFGWPKJUGCATF-UHFFFAOYSA-N 0.000 description 1
- FQYYIPZPELSLDK-UHFFFAOYSA-N ethyl pyridine-2-carboxylate Chemical compound CCOC(=O)C1=CC=CC=N1 FQYYIPZPELSLDK-UHFFFAOYSA-N 0.000 description 1
- MCRPKBUFXAKDKI-UHFFFAOYSA-N ethyl pyridine-4-carboxylate Chemical compound CCOC(=O)C1=CC=NC=C1 MCRPKBUFXAKDKI-UHFFFAOYSA-N 0.000 description 1
- BLHLJVCOVBYQQS-UHFFFAOYSA-N ethyllithium Chemical compound [Li]CC BLHLJVCOVBYQQS-UHFFFAOYSA-N 0.000 description 1
- 239000001530 fumaric acid Substances 0.000 description 1
- 238000012685 gas phase polymerization Methods 0.000 description 1
- 238000007429 general method Methods 0.000 description 1
- VANNPISTIUFMLH-UHFFFAOYSA-N glutaric anhydride Chemical compound O=C1CCCC(=O)O1 VANNPISTIUFMLH-UHFFFAOYSA-N 0.000 description 1
- HOQUWXSARQBQCW-UHFFFAOYSA-N hexadecyl carbonochloridate Chemical compound CCCCCCCCCCCCCCCCOC(Cl)=O HOQUWXSARQBQCW-UHFFFAOYSA-N 0.000 description 1
- MUTGBJKUEZFXGO-UHFFFAOYSA-N hexahydrophthalic anhydride Chemical compound C1CCCC2C(=O)OC(=O)C21 MUTGBJKUEZFXGO-UHFFFAOYSA-N 0.000 description 1
- KIWBRXCOTCXSSZ-UHFFFAOYSA-N hexyl carbonochloridate Chemical compound CCCCCCOC(Cl)=O KIWBRXCOTCXSSZ-UHFFFAOYSA-N 0.000 description 1
- 229920001519 homopolymer Polymers 0.000 description 1
- 239000001282 iso-butane Substances 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- UBJFKNSINUCEAL-UHFFFAOYSA-N lithium;2-methylpropane Chemical compound [Li+].C[C-](C)C UBJFKNSINUCEAL-UHFFFAOYSA-N 0.000 description 1
- IQEMUADSVZEVNV-UHFFFAOYSA-N lithium;cyclopentane Chemical compound [Li+].C1CC[CH-]C1 IQEMUADSVZEVNV-UHFFFAOYSA-N 0.000 description 1
- SZAVVKVUMPLRRS-UHFFFAOYSA-N lithium;propane Chemical compound [Li+].C[CH-]C SZAVVKVUMPLRRS-UHFFFAOYSA-N 0.000 description 1
- XBEREOHJDYAKDA-UHFFFAOYSA-N lithium;propane Chemical compound [Li+].CC[CH2-] XBEREOHJDYAKDA-UHFFFAOYSA-N 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
- ZQKXQUJXLSSJCH-UHFFFAOYSA-N melamine cyanurate Chemical compound NC1=NC(N)=NC(N)=N1.O=C1NC(=O)NC(=O)N1 ZQKXQUJXLSSJCH-UHFFFAOYSA-N 0.000 description 1
- YSRVJVDFHZYRPA-UHFFFAOYSA-N melem Chemical compound NC1=NC(N23)=NC(N)=NC2=NC(N)=NC3=N1 YSRVJVDFHZYRPA-UHFFFAOYSA-N 0.000 description 1
- NHFBYYMNJUMVOT-UHFFFAOYSA-N methyl 2-bromo-2-phenylacetate Chemical compound COC(=O)C(Br)C1=CC=CC=C1 NHFBYYMNJUMVOT-UHFFFAOYSA-N 0.000 description 1
- YDCHPLOFQATIDS-UHFFFAOYSA-N methyl 2-bromoacetate Chemical compound COC(=O)CBr YDCHPLOFQATIDS-UHFFFAOYSA-N 0.000 description 1
- KQEVIFKPZOGBMZ-UHFFFAOYSA-N methyl 3-bromopropanoate Chemical compound COC(=O)CCBr KQEVIFKPZOGBMZ-UHFFFAOYSA-N 0.000 description 1
- QAWFLJGZSZIZHO-UHFFFAOYSA-N methyl 4-bromobutanoate Chemical compound COC(=O)CCCBr QAWFLJGZSZIZHO-UHFFFAOYSA-N 0.000 description 1
- XMJHPCRAQCTCFT-UHFFFAOYSA-N methyl chloroformate Chemical compound COC(Cl)=O XMJHPCRAQCTCFT-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
- 229960001238 methylnicotinate Drugs 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000000465 moulding Methods 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
- IJDNQMDRQITEOD-UHFFFAOYSA-N n-butane Chemical compound CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 description 1
- 125000001624 naphthyl group Chemical group 0.000 description 1
- 125000000449 nitro group Chemical group [O-][N+](*)=O 0.000 description 1
- VFXVAXFIFHSGNR-UHFFFAOYSA-N octyl carbonochloridate Chemical compound CCCCCCCCOC(Cl)=O VFXVAXFIFHSGNR-UHFFFAOYSA-N 0.000 description 1
- 235000006408 oxalic acid Nutrition 0.000 description 1
- XHRRYUDVWPPWIP-UHFFFAOYSA-N pentyl carbonochloridate Chemical compound CCCCCOC(Cl)=O XHRRYUDVWPPWIP-UHFFFAOYSA-N 0.000 description 1
- PNJWIWWMYCMZRO-UHFFFAOYSA-N pent‐4‐en‐2‐one Natural products CC(=O)CC=C PNJWIWWMYCMZRO-UHFFFAOYSA-N 0.000 description 1
- 125000005561 phenanthryl group Chemical group 0.000 description 1
- AHWALFGBDFAJAI-UHFFFAOYSA-N phenyl carbonochloridate Chemical compound ClC(=O)OC1=CC=CC=C1 AHWALFGBDFAJAI-UHFFFAOYSA-N 0.000 description 1
- GCSHUYKULREZSJ-UHFFFAOYSA-N phenyl(pyridin-2-yl)methanone Chemical compound C=1C=CC=NC=1C(=O)C1=CC=CC=C1 GCSHUYKULREZSJ-UHFFFAOYSA-N 0.000 description 1
- RYMBAPVTUHZCNF-UHFFFAOYSA-N phenyl(pyridin-3-yl)methanone Chemical compound C=1C=CN=CC=1C(=O)C1=CC=CC=C1 RYMBAPVTUHZCNF-UHFFFAOYSA-N 0.000 description 1
- SKFLCXNDKRUHTA-UHFFFAOYSA-N phenyl(pyridin-4-yl)methanone Chemical compound C=1C=NC=CC=1C(=O)C1=CC=CC=C1 SKFLCXNDKRUHTA-UHFFFAOYSA-N 0.000 description 1
- NHKJPPKXDNZFBJ-UHFFFAOYSA-N phenyllithium Chemical compound [Li]C1=CC=CC=C1 NHKJPPKXDNZFBJ-UHFFFAOYSA-N 0.000 description 1
- PMJHHCWVYXUKFD-UHFFFAOYSA-N piperylene Natural products CC=CC=C PMJHHCWVYXUKFD-UHFFFAOYSA-N 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 159000000001 potassium salts Chemical class 0.000 description 1
- LPNYRYFBWFDTMA-UHFFFAOYSA-N potassium tert-butoxide Chemical compound [K+].CC(C)(C)[O-] LPNYRYFBWFDTMA-UHFFFAOYSA-N 0.000 description 1
- ZRLVQFQTCMUIRM-UHFFFAOYSA-N potassium;2-methylbutan-2-olate Chemical compound [K+].CCC(C)(C)[O-] ZRLVQFQTCMUIRM-UHFFFAOYSA-N 0.000 description 1
- JCWLEWKPXYZHGQ-UHFFFAOYSA-N propan-2-yl 2-bromoacetate Chemical compound CC(C)OC(=O)CBr JCWLEWKPXYZHGQ-UHFFFAOYSA-N 0.000 description 1
- IVRIRQXJSNCSPQ-UHFFFAOYSA-N propan-2-yl carbonochloridate Chemical compound CC(C)OC(Cl)=O IVRIRQXJSNCSPQ-UHFFFAOYSA-N 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
- SHNUBALDGXWUJI-UHFFFAOYSA-N pyridin-2-ylmethanol Chemical compound OCC1=CC=CC=N1 SHNUBALDGXWUJI-UHFFFAOYSA-N 0.000 description 1
- QJZUKDFHGGYHMC-UHFFFAOYSA-N pyridine-3-carbaldehyde Chemical compound O=CC1=CC=CN=C1 QJZUKDFHGGYHMC-UHFFFAOYSA-N 0.000 description 1
- VPODXHOUBDCEHN-UHFFFAOYSA-N pyridine-3-carbonyl pyridine-3-carboxylate Chemical compound C=1C=CN=CC=1C(=O)OC(=O)C1=CC=CN=C1 VPODXHOUBDCEHN-UHFFFAOYSA-N 0.000 description 1
- BGUWFUQJCDRPTL-UHFFFAOYSA-N pyridine-4-carbaldehyde Chemical compound O=CC1=CC=NC=C1 BGUWFUQJCDRPTL-UHFFFAOYSA-N 0.000 description 1
- GPHQHTOMRSGBNZ-UHFFFAOYSA-N pyridine-4-carbonitrile Chemical compound N#CC1=CC=NC=C1 GPHQHTOMRSGBNZ-UHFFFAOYSA-N 0.000 description 1
- YAAWASYJIRZXSZ-UHFFFAOYSA-N pyrimidine-2,4-diamine Chemical compound NC1=CC=NC(N)=N1 YAAWASYJIRZXSZ-UHFFFAOYSA-N 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000012763 reinforcing filler Substances 0.000 description 1
- 125000005372 silanol group Chemical group 0.000 description 1
- 159000000000 sodium salts Chemical class 0.000 description 1
- CGRKYEALWSRNJS-UHFFFAOYSA-N sodium;2-methylbutan-2-olate Chemical compound [Na+].CCC(C)(C)[O-] CGRKYEALWSRNJS-UHFFFAOYSA-N 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 150000003440 styrenes Chemical class 0.000 description 1
- 125000001424 substituent group Chemical group 0.000 description 1
- 229940014800 succinic anhydride Drugs 0.000 description 1
- IGVNJALYNQVQIT-UHFFFAOYSA-N tert-butyl 2-bromo-2-methylpropanoate Chemical compound CC(C)(C)OC(=O)C(C)(C)Br IGVNJALYNQVQIT-UHFFFAOYSA-N 0.000 description 1
- BNWCETAHAJSBFG-UHFFFAOYSA-N tert-butyl 2-bromoacetate Chemical compound CC(C)(C)OC(=O)CBr BNWCETAHAJSBFG-UHFFFAOYSA-N 0.000 description 1
- CVAWKJKISIPBOD-UHFFFAOYSA-N tert-butyl 2-bromopropanoate Chemical compound CC(Br)C(=O)OC(C)(C)C CVAWKJKISIPBOD-UHFFFAOYSA-N 0.000 description 1
- UJJDEOLXODWCGK-UHFFFAOYSA-N tert-butyl carbonochloridate Chemical compound CC(C)(C)OC(Cl)=O UJJDEOLXODWCGK-UHFFFAOYSA-N 0.000 description 1
- 150000003512 tertiary amines Chemical class 0.000 description 1
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
- ZEMGGZBWXRYJHK-UHFFFAOYSA-N thiouracil Chemical compound O=C1C=CNC(=S)N1 ZEMGGZBWXRYJHK-UHFFFAOYSA-N 0.000 description 1
- 229950000329 thiouracil Drugs 0.000 description 1
- 125000003944 tolyl group Chemical group 0.000 description 1
- IAQRGUVFOMOMEM-ONEGZZNKSA-N trans-but-2-ene Chemical compound C\C=C\C IAQRGUVFOMOMEM-ONEGZZNKSA-N 0.000 description 1
- VTHOKNTVYKTUPI-UHFFFAOYSA-N triethoxy-[3-(3-triethoxysilylpropyltetrasulfanyl)propyl]silane Chemical compound CCO[Si](OCC)(OCC)CCCSSSSCCC[Si](OCC)(OCC)OCC VTHOKNTVYKTUPI-UHFFFAOYSA-N 0.000 description 1
- 239000013638 trimer Substances 0.000 description 1
- ABDKAPXRBAPSQN-UHFFFAOYSA-N veratrole Chemical compound COC1=CC=CC=C1OC ABDKAPXRBAPSQN-UHFFFAOYSA-N 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
- 125000005023 xylyl group Chemical group 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Landscapes
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
- Tires In General (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Description
で表され、
前記Bが下記式(4)〜(7);
のいずれかで表されることが好ましい。
また、前記重合体混合物(a)及び(b)を構成する重合体がスチレン重合体、ブタジエン重合体又はスチレンブタジエン重合体であることが好ましい。更に、前記重合体混合物(a)及び(b)の前記スチレンブタジエン重合体のスチレン含有量が5〜35質量%であることが好ましい。
本発明はまた、前記ゴム組成物を用いて作製した空気入りタイヤに関する。
なお、通常、変性後に重合反応を停止する目的で水、アルコール、酸などを混合する。さらに必要に応じて公知の老化防止剤を混合してもよい。方法(1)によれば、末端が変性された変性重合体を含む重合体混合物を調製できる。
なお、上記式(1)で表される変性基は、Aで示される2価の飽和又は不飽和炭化水素基が存在するもの、存在しないもののいずれでもよい。
アリール基としては、好ましくは炭素数6〜10であり、具体的には、フェニル基、トリル基、キシリル基、ビフェニル基、ナフチル基、アントリル基、フェナントリル基などが挙げられる。
アリール基としては、好ましくは炭素数6〜10であり、具体的には、R24、R25のアリール基と同様のものが挙げられる。
なお、本明細書において、重量平均分子量(Mw)は、後述の実施例に記載の方法により測定される。
なお、本明細書において、スチレン含有量は、後述の実施例に記載の方法により測定される。
なお、上記重合体混合物(a)及び(b)は、ゴム成分に含まれない。
重合体混合物(a)及び(b)の各含有量が0.5質量部未満であると、低燃費性、耐摩耗性を充分に改善できないおそれがある。100質量部を超えると、ブリードアウトする上にコストが高くなる傾向がある。
なお、シリカのN2SAは、ASTM D3037−93に準じてBET法で測定される値である。
n−ヘキサン:関東化学(株)製
1,3−ブタジエン:高千穂化学工業(株)製
スチレン:関東化学(株)製
テトラメチルエチレンジアミン:関東化学(株)製
1.6M n−ブチルリチウムヘキサン溶液:関東化学(株)製
2,6−ジ−t−ブチル−p−クレゾール:大内新興化学工業(株)製
変性剤(1):Aldrich社製のシアノギ酸メチル
変性剤(2):東京化成工業(株)製のアクリル酸t−ブチル
変性剤(3):東京化成工業(株)製の4−メチルシクロヘキサン−1,2−ジカルボン酸無水物
変性剤(4):東京化成工業(株)製の無水マレイン酸
変性剤(5):和光純薬工業(株)製の2−シアノピリミジン
変性剤(6):和光純薬工業(株)製の2−エチニルピリジン
変性剤(7):和光純薬工業(株)製の2,3−ピリジンジカルボン酸無水物
変性剤(8):和光純薬工業(株)製のイソニコチン酸メチル
十分に窒素置換した撹拌翼つきの3Lオートクレーブに、表1の仕込み量にしたがい、n−ヘキサン、1,3−ブタジエン、スチレン、テトラメチルエチレンジアミンを投入し、オートクレーブ内の温度を25℃に調整した。次に、1.6M n−ブチルリチウムヘキサン溶液を加えて昇温条件下(30℃)で60分間重合し、モノマーの転化率が99%であることを確認し、老化防止剤として2,6−ジ−t−ブチル−p−クレゾールを1.5g加え、スチレンブタジエン共重合体(1)〜(3)を合成した。
表2〜3の仕込み量にしたがった点以外は、製造例1と同様の条件でスチレンブタジエン共重合体の重合を行い、クエンチせずにアニオン重合末端を活性のまま、表2〜3にしたがい変性剤を加えて昇温条件下(30℃)で30分間撹拌した。次にメタノールを加え15分間撹拌し、その後、老化防止剤として2,6−ジ−t−ブチル−p−クレゾールを1.5g加え、スチレンブタジエン共重合体a−(1)〜a−(12)、及びb−(1)〜b−(12)を合成した。
25℃にてJEOL JNM−A 400NMR装置を用いてH1−NMRを測定し、そのスペクトルより求めた6.5〜7.2ppmのスチレン単位に基づくフェニルプロトンと4.9〜5.4ppmのブタジエン単位に基づくビニルプロトンの比からスチレン含有量、又は重合体混合物のスチレン含有量を決定した。
共重合体、又は重合体混合物の重量平均分子量Mwは、ゲルパーミエーションクロマトグラフ(GPC)(東ソー(株)製GPC−8000シリーズ、検出器:示差屈折計、カラム:東ソー(株)製のTSKGEL SUPERMULTIPORE HZ−M)による測定値を基に標準ポリスチレン換算により求めた。
以下に、実施例及び比較例で用いた各種薬品について説明する。
SBR:日本ゼオン(株)製のNS116(スチレン含有量:22質量%、ビニル含有量:65質量%)
シリカ:デグッサ社製のウルトラシルVN3(N2SA:175m2/g)
シランカップリング剤:デグッサ社製のSi266(ビス(3−トリエトキシシリルプロピル)ジスルフィド)
酸化亜鉛:三井金属鉱業(株)製の亜鉛華1号
ステアリン酸:日油(株)製のステアリン酸「椿」
老化防止剤:住友化学(株)製のアンチゲン6C(N−(1,3−ジメチルブチル)−N’−フェニル−p−フェニレンジアミン)
硫黄:鶴見化学工業(株)製の粉末硫黄
加硫促進剤(1):大内新興化学工業(株)製のノクセラーNS(N−tert−ブチル−2−ベンゾチアゾリルスルフェンアミド)
加硫促進剤(2):大内新興化学工業(株)製のノクセラーD(N,N’−ジフェニルグアニジン)
スチレンブタジエン共重合体(1)〜(3):製造例1
スチレンブタジエン共重合体a−(1)〜a−(12):製造例2
スチレンブタジエン共重合体b−(1)〜b−(12):製造例2
また、上記未加硫ゴム組成物をトレッドの形状に成形し、他のタイヤ部材とともに貼り合わせて未加硫タイヤを形成し、170℃の条件下で10分間プレス加硫し、試験用タイヤ(サイズ195/65R15)を製造した。
得られた加硫物、試験用タイヤを下記により評価し、結果を表4に示した。
ランボーン摩耗試験機を用いて、温度20℃、スリップ率20%及び試験時間2分間の条件下でランボーン摩耗量を測定した。更に、測定したランボーン摩耗量から容積損失量を計算し、比較例1の容積損失量を100として、下記計算式により、各配合(加硫物)の容積損失量を指数表示した。なお、ランボーン摩耗指数が大きいほど、耐摩耗性に優れることを示す。
(耐摩耗性指数)=(比較例1の容積損失量)/(各配合の容積損失量)×100
粘弾性スペクトロメーターVES((株)岩本製作所製)を用いて、温度70℃、初期歪み10%、動歪み2%、周波数10Hzの条件下で各配合(加硫物)の損失正接(tanδ)を測定し、下記計算式により指数表示した。指数が大きいほど低燃費性に優れることを示す。
(低燃費性指数(1))=(比較例1のtanδ)/(各配合のtanδ)×100
転がり抵抗試験機を用いて、得られた試験用タイヤを、リム15×6JJ、タイヤ内圧230kPa、荷重3.43kN及び速度80km/hの条件下で走行させたときの転がり抵抗を測定し、比較例1の転がり抵抗指数を100とし、下記計算式により、各配合の転がり抵抗を指数表示した。なお、指数大きいほど、転がり抵抗が低減され、低燃費性に優れることを示す。
(低燃費性指数(2))=(比較例1の転がり抵抗)/(各配合の転がり抵抗)×100
一方、重合体混合物(a)、(b)のいずれか一方と、シリカとを用いた場合、改善効果が劣っていた(比較例4、5)。
Claims (10)
- 下記式(1)で表される変性基を有する共役ジエン化合物及び/又は芳香族ビニル化合物の変性重合体を含む重合体混合物(a)と、
下記式(21)、(22)又は(23)で表される変性基を有する共役ジエン化合物及び/又は芳香族ビニル化合物の変性重合体を含む重合体混合物(b)と、
シリカとを含み、
前記重合体混合物(a)及び(b)の重量平均分子量が1.0×103〜1.0×105であり、
ゴム成分100質量部に対して、前記重合体混合物(a)及び(b)の含有量がそれぞれ0.5〜100質量部であり、前記シリカの含有量が5〜150質量部であるゴム組成物。
- 前記式(1)で表される変性基を有する共役ジエン化合物及び/又は芳香族ビニル化合物の変性重合体、並びに、前記式(21)、(22)又は(23)で表される変性基を有する共役ジエン化合物及び/又は芳香族ビニル化合物の変性重合体は、末端が変性されたものである請求項1に記載のゴム組成物。
- ゴム成分100質量%中のスチレンブタジエンゴムの含有量が80質量%以上、ゴム成分100質量部に対するオイルの含有量が5質量部以下である請求項1又は2に記載のゴム組成物。
- 前記重合体混合物(a)は、該重合体混合物(a)を構成する重合体1分子あたり、前記式(1)で表される変性基を平均0.1個以上有し、前記重合体混合物(b)は、該重合体混合物(b)を構成する重合体1分子あたり、前記式(21)、(22)又は(23)で表される変性基を平均0.1個以上有する請求項1〜4のいずれかに記載のゴム組成物。
- 前記重合体混合物(a)及び(b)を構成する重合体がスチレン重合体、ブタジエン重合体又はスチレンブタジエン重合体である請求項1〜5のいずれかに記載のゴム組成物。
- 前記重合体混合物(a)及び(b)の前記スチレンブタジエン重合体のスチレン含有量が5〜35質量%である請求項6に記載のゴム組成物。
- 前記共役ジエン化合物及び/又は前記芳香族ビニル化合物を重合して得られた重合体の末端の一部又は全部に対して前記式(1)で表される基を有する化合物を反応させ、また、前記共役ジエン化合物及び/又は前記芳香族ビニル化合物を重合して得られた重合体の末端の一部又は全部に対して前記式(21)、(22)又は(23)で表される基を有する化合物を反応させ、前記重合体混合物(a)及び(b)をそれぞれ調製する工程1と、
前記重合体混合物(a)及び(b)、並びに、前記シリカを混合する工程2とを含む請求項1〜7のいずれかに記載のゴム組成物の製造方法。 - 請求項1〜7のいずれかに記載のゴム組成物からなるタイヤ用ゴム組成物。
- 請求項1〜7のいずれかに記載のゴム組成物を用いて作製した空気入りタイヤ。
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