JP2011080023A - タイヤ用ゴム組成物及びスタッドレスタイヤ - Google Patents
タイヤ用ゴム組成物及びスタッドレスタイヤ Download PDFInfo
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- JP2011080023A JP2011080023A JP2009235683A JP2009235683A JP2011080023A JP 2011080023 A JP2011080023 A JP 2011080023A JP 2009235683 A JP2009235683 A JP 2009235683A JP 2009235683 A JP2009235683 A JP 2009235683A JP 2011080023 A JP2011080023 A JP 2011080023A
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- Prior art keywords
- rubber
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- hydrocarbon group
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- 229920001971 elastomer Polymers 0.000 title claims abstract description 72
- 239000005060 rubber Substances 0.000 title claims abstract description 72
- 239000000203 mixture Substances 0.000 title claims abstract description 47
- -1 diene compound Chemical class 0.000 claims abstract description 69
- 229920001577 copolymer Polymers 0.000 claims abstract description 62
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 59
- 150000001875 compounds Chemical class 0.000 claims abstract description 51
- 229920003244 diene elastomer Polymers 0.000 claims abstract description 30
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 29
- 238000006735 epoxidation reaction Methods 0.000 claims abstract description 16
- 229920002554 vinyl polymer Polymers 0.000 claims abstract description 12
- 125000004432 carbon atom Chemical group C* 0.000 claims description 45
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 43
- 229910052757 nitrogen Inorganic materials 0.000 claims description 26
- 244000043261 Hevea brasiliensis Species 0.000 claims description 23
- 239000001257 hydrogen Substances 0.000 claims description 23
- 229910052739 hydrogen Inorganic materials 0.000 claims description 23
- 229920003052 natural elastomer Polymers 0.000 claims description 23
- 229920001194 natural rubber Polymers 0.000 claims description 23
- 125000001931 aliphatic group Chemical group 0.000 claims description 17
- 125000002029 aromatic hydrocarbon group Chemical group 0.000 claims description 17
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 16
- 125000002723 alicyclic group Chemical group 0.000 claims description 15
- 229910052799 carbon Inorganic materials 0.000 claims description 14
- 239000005062 Polybutadiene Substances 0.000 claims description 13
- 229920002857 polybutadiene Polymers 0.000 claims description 13
- 125000000217 alkyl group Chemical group 0.000 claims description 12
- 239000006229 carbon black Substances 0.000 claims description 12
- 150000002431 hydrogen Chemical class 0.000 claims description 12
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 11
- 229920003049 isoprene rubber Polymers 0.000 claims description 10
- 229920006395 saturated elastomer Polymers 0.000 claims description 10
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 9
- 125000003545 alkoxy group Chemical group 0.000 claims description 8
- 239000001301 oxygen Substances 0.000 claims description 8
- 229910052760 oxygen Inorganic materials 0.000 claims description 8
- 125000004469 siloxy group Chemical group [SiH3]O* 0.000 claims description 7
- 150000002430 hydrocarbons Chemical group 0.000 claims description 6
- 229920003048 styrene butadiene rubber Polymers 0.000 claims description 6
- 229910052736 halogen Inorganic materials 0.000 claims description 5
- 150000002367 halogens Chemical group 0.000 claims description 5
- 125000001424 substituent group Chemical group 0.000 claims description 5
- 125000004036 acetal group Chemical group 0.000 claims description 4
- 125000006615 aromatic heterocyclic group Chemical group 0.000 claims description 4
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 claims description 4
- 125000000623 heterocyclic group Chemical group 0.000 claims description 4
- 229910052710 silicon Inorganic materials 0.000 claims description 4
- 239000010703 silicon Substances 0.000 claims description 4
- 125000003396 thiol group Chemical group [H]S* 0.000 claims description 4
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 125000006413 ring segment Chemical group 0.000 claims description 3
- 241000872198 Serjania polyphylla Species 0.000 claims description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 77
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 41
- 238000000034 method Methods 0.000 description 33
- 238000004519 manufacturing process Methods 0.000 description 27
- MZRVEZGGRBJDDB-UHFFFAOYSA-N N-Butyllithium Chemical compound [Li]CCCC MZRVEZGGRBJDDB-UHFFFAOYSA-N 0.000 description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 20
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical class C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 description 18
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 18
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 18
- 238000006116 polymerization reaction Methods 0.000 description 17
- 230000000694 effects Effects 0.000 description 15
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 15
- KFSLWBXXFJQRDL-UHFFFAOYSA-N Peracetic acid Chemical compound CC(=O)OO KFSLWBXXFJQRDL-UHFFFAOYSA-N 0.000 description 14
- 238000006243 chemical reaction Methods 0.000 description 13
- MYRTYDVEIRVNKP-UHFFFAOYSA-N 1,2-Divinylbenzene Chemical compound C=CC1=CC=CC=C1C=C MYRTYDVEIRVNKP-UHFFFAOYSA-N 0.000 description 12
- 230000015572 biosynthetic process Effects 0.000 description 12
- 239000000945 filler Substances 0.000 description 12
- 238000003786 synthesis reaction Methods 0.000 description 12
- XDTMQSROBMDMFD-UHFFFAOYSA-N Cyclohexane Chemical compound C1CCCCC1 XDTMQSROBMDMFD-UHFFFAOYSA-N 0.000 description 11
- 238000005259 measurement Methods 0.000 description 7
- 239000003607 modifier Substances 0.000 description 7
- 239000000126 substance Substances 0.000 description 7
- RRHGJUQNOFWUDK-UHFFFAOYSA-N Isoprene Chemical compound CC(=C)C=C RRHGJUQNOFWUDK-UHFFFAOYSA-N 0.000 description 6
- 239000006087 Silane Coupling Agent Substances 0.000 description 6
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 6
- 238000010539 anionic addition polymerization reaction Methods 0.000 description 6
- 239000003795 chemical substances by application Substances 0.000 description 6
- 238000005227 gel permeation chromatography Methods 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 6
- 239000000178 monomer Substances 0.000 description 6
- 239000003505 polymerization initiator Substances 0.000 description 6
- 238000002360 preparation method Methods 0.000 description 6
- 238000003756 stirring Methods 0.000 description 6
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 5
- 229920000459 Nitrile rubber Polymers 0.000 description 5
- 238000010528 free radical solution polymerization reaction Methods 0.000 description 5
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 4
- 230000006872 improvement Effects 0.000 description 4
- 229920006173 natural rubber latex Polymers 0.000 description 4
- 238000005292 vacuum distillation Methods 0.000 description 4
- KGIGUEBEKRSTEW-UHFFFAOYSA-N 2-vinylpyridine Chemical compound C=CC1=CC=CC=N1 KGIGUEBEKRSTEW-UHFFFAOYSA-N 0.000 description 3
- VXEGSRKPIUDPQT-UHFFFAOYSA-N 4-[4-(4-methoxyphenyl)piperazin-1-yl]aniline Chemical compound C1=CC(OC)=CC=C1N1CCN(C=2C=CC(N)=CC=2)CC1 VXEGSRKPIUDPQT-UHFFFAOYSA-N 0.000 description 3
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- 239000004215 Carbon black (E152) Substances 0.000 description 3
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 3
- SJRJJKPEHAURKC-UHFFFAOYSA-N N-Methylmorpholine Chemical compound CN1CCOCC1 SJRJJKPEHAURKC-UHFFFAOYSA-N 0.000 description 3
- RWRDLPDLKQPQOW-UHFFFAOYSA-N Pyrrolidine Chemical compound C1CCNC1 RWRDLPDLKQPQOW-UHFFFAOYSA-N 0.000 description 3
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 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
- 229920005549 butyl rubber Polymers 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 238000013329 compounding Methods 0.000 description 3
- 238000009472 formulation Methods 0.000 description 3
- 239000000446 fuel Substances 0.000 description 3
- 229930195733 hydrocarbon Natural products 0.000 description 3
- 238000004898 kneading Methods 0.000 description 3
- 150000002642 lithium compounds Chemical class 0.000 description 3
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 3
- FDNAPBUWERUEDA-UHFFFAOYSA-N silicon tetrachloride Chemical compound Cl[Si](Cl)(Cl)Cl FDNAPBUWERUEDA-UHFFFAOYSA-N 0.000 description 3
- 239000005049 silicon tetrachloride Substances 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- 238000001179 sorption measurement Methods 0.000 description 3
- 229910052717 sulfur Inorganic materials 0.000 description 3
- 239000011593 sulfur Substances 0.000 description 3
- 239000004094 surface-active agent Substances 0.000 description 3
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 3
- 238000004073 vulcanization Methods 0.000 description 3
- VXNZUUAINFGPBY-UHFFFAOYSA-N 1-Butene Chemical compound CCC=C VXNZUUAINFGPBY-UHFFFAOYSA-N 0.000 description 2
- GRVAGTQLVKBPLL-UHFFFAOYSA-N 1-[2-(4-ethenylphenyl)ethyl]azepane Chemical compound C1=CC(C=C)=CC=C1CCN1CCCCCC1 GRVAGTQLVKBPLL-UHFFFAOYSA-N 0.000 description 2
- LMAFWBCYAPNOFK-UHFFFAOYSA-N 1-[2-(4-ethenylphenyl)ethyl]pyrrolidine Chemical compound C1=CC(C=C)=CC=C1CCN1CCCC1 LMAFWBCYAPNOFK-UHFFFAOYSA-N 0.000 description 2
- LIKMAJRDDDTEIG-UHFFFAOYSA-N 1-hexene Chemical compound CCCCC=C LIKMAJRDDDTEIG-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
- OHDSHGBRKMRPHC-UHFFFAOYSA-N 2-(4-ethenylphenyl)-n,n-dimethylethanamine Chemical compound CN(C)CCC1=CC=C(C=C)C=C1 OHDSHGBRKMRPHC-UHFFFAOYSA-N 0.000 description 2
- RYPKRALMXUUNKS-UHFFFAOYSA-N 2-Hexene Natural products CCCC=CC RYPKRALMXUUNKS-UHFFFAOYSA-N 0.000 description 2
- WJUHASGUDSZAIJ-UHFFFAOYSA-N 4-[2-(4-ethenylphenyl)ethyl]morpholine Chemical compound C1=CC(C=C)=CC=C1CCN1CCOCC1 WJUHASGUDSZAIJ-UHFFFAOYSA-N 0.000 description 2
- 229920002943 EPDM rubber Polymers 0.000 description 2
- YNQLUTRBYVCPMQ-UHFFFAOYSA-N Ethylbenzene Chemical compound CCC1=CC=CC=C1 YNQLUTRBYVCPMQ-UHFFFAOYSA-N 0.000 description 2
- VQTUBCCKSQIDNK-UHFFFAOYSA-N Isobutene Chemical compound CC(C)=C VQTUBCCKSQIDNK-UHFFFAOYSA-N 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
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 2
- 235000021355 Stearic acid Nutrition 0.000 description 2
- 239000002174 Styrene-butadiene Substances 0.000 description 2
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 229960000583 acetic acid Drugs 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 125000003277 amino group Chemical group 0.000 description 2
- 230000003712 anti-aging effect Effects 0.000 description 2
- 125000004104 aryloxy group Chemical group 0.000 description 2
- 125000004429 atom Chemical group 0.000 description 2
- IAQRGUVFOMOMEM-UHFFFAOYSA-N but-2-ene Chemical compound CC=CC IAQRGUVFOMOMEM-UHFFFAOYSA-N 0.000 description 2
- 125000002915 carbonyl group Chemical group [*:2]C([*:1])=O 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 125000000000 cycloalkoxy group Chemical group 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 239000012153 distilled water Substances 0.000 description 2
- 125000004185 ester group Chemical group 0.000 description 2
- 125000001301 ethoxy group Chemical group [H]C([H])([H])C([H])([H])O* 0.000 description 2
- 125000006534 ethyl amino methyl group Chemical group [H]N(C([H])([H])*)C([H])([H])C([H])([H])[H] 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- NNPPMTNAJDCUHE-UHFFFAOYSA-N isobutane Chemical compound CC(C)C NNPPMTNAJDCUHE-UHFFFAOYSA-N 0.000 description 2
- QWTDNUCVQCZILF-UHFFFAOYSA-N isopentane Chemical compound CCC(C)C QWTDNUCVQCZILF-UHFFFAOYSA-N 0.000 description 2
- WGOPGODQLGJZGL-UHFFFAOYSA-N lithium;butane Chemical compound [Li+].CC[CH-]C WGOPGODQLGJZGL-UHFFFAOYSA-N 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 125000000956 methoxy group Chemical group [H]C([H])([H])O* 0.000 description 2
- 238000006011 modification reaction Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- XYNRSODPDAHNQC-UHFFFAOYSA-N n-[2-(4-ethenylphenyl)ethyl]-n-propylpropan-1-amine Chemical compound CCCN(CCC)CCC1=CC=C(C=C)C=C1 XYNRSODPDAHNQC-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
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 2
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 150000004967 organic peroxy acids Chemical class 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
- 150000004965 peroxy acids Chemical class 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 239000012744 reinforcing agent Substances 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 239000008117 stearic acid Substances 0.000 description 2
- 150000003512 tertiary amines Chemical class 0.000 description 2
- HPGGPRDJHPYFRM-UHFFFAOYSA-J tin(iv) chloride Chemical compound Cl[Sn](Cl)(Cl)Cl HPGGPRDJHPYFRM-UHFFFAOYSA-J 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- XJDNKRIXUMDJCW-UHFFFAOYSA-J titanium tetrachloride Chemical compound Cl[Ti](Cl)(Cl)Cl XJDNKRIXUMDJCW-UHFFFAOYSA-J 0.000 description 2
- 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 2
- 239000004636 vulcanized rubber Substances 0.000 description 2
- AHAREKHAZNPPMI-AATRIKPKSA-N (3e)-hexa-1,3-diene Chemical compound CC\C=C\C=C AHAREKHAZNPPMI-AATRIKPKSA-N 0.000 description 1
- WAVDSLLYAQBITE-UHFFFAOYSA-N (4-ethenylphenyl)methanamine Chemical compound NCC1=CC=C(C=C)C=C1 WAVDSLLYAQBITE-UHFFFAOYSA-N 0.000 description 1
- PMJHHCWVYXUKFD-SNAWJCMRSA-N (E)-1,3-pentadiene Chemical compound C\C=C\C=C PMJHHCWVYXUKFD-SNAWJCMRSA-N 0.000 description 1
- VHSBTBDMKDUVKG-UHFFFAOYSA-N (dimethylcarbamothioyltrisulfanyl) n,n-dimethylcarbamodithioate Chemical compound CN(C)C(=S)SSSSC(=S)N(C)C VHSBTBDMKDUVKG-UHFFFAOYSA-N 0.000 description 1
- HIACAHMKXQESOV-UHFFFAOYSA-N 1,2-bis(prop-1-en-2-yl)benzene Chemical compound CC(=C)C1=CC=CC=C1C(C)=C HIACAHMKXQESOV-UHFFFAOYSA-N 0.000 description 1
- CORMBJOFDGICKF-UHFFFAOYSA-N 1,3,5-trimethoxy 2-vinyl benzene Natural products COC1=CC(OC)=C(C=C)C(OC)=C1 CORMBJOFDGICKF-UHFFFAOYSA-N 0.000 description 1
- UYMQPNRUQXPLCY-UHFFFAOYSA-N 1-(2-piperidin-1-ylethyl)piperidine Chemical compound C1CCCCN1CCN1CCCCC1 UYMQPNRUQXPLCY-UHFFFAOYSA-N 0.000 description 1
- WZDBFKKBMMGPTK-UHFFFAOYSA-N 1-[2-(4-ethenylphenyl)ethyl]-2,2,6,6-tetramethylpiperidine Chemical compound CC1(C)CCCC(C)(C)N1CCC1=CC=C(C=C)C=C1 WZDBFKKBMMGPTK-UHFFFAOYSA-N 0.000 description 1
- CHPMVJPDQCNCFY-UHFFFAOYSA-N 1-[2-(4-ethenylphenyl)ethyl]-2,5-dimethylpyrrolidine Chemical compound CC1CCC(C)N1CCC1=CC=C(C=C)C=C1 CHPMVJPDQCNCFY-UHFFFAOYSA-N 0.000 description 1
- RMBKOBKVSZTIDZ-UHFFFAOYSA-N 1-[2-(4-ethenylphenyl)ethyl]-2,6-dimethylpiperidine Chemical compound CC1CCCC(C)N1CCC1=CC=C(C=C)C=C1 RMBKOBKVSZTIDZ-UHFFFAOYSA-N 0.000 description 1
- SXYJJOMQBXYPBT-UHFFFAOYSA-N 1-[2-(4-ethenylphenyl)ethyl]-2-ethylpiperidine Chemical compound CCC1CCCCN1CCC1=CC=C(C=C)C=C1 SXYJJOMQBXYPBT-UHFFFAOYSA-N 0.000 description 1
- KEJHIDWLEDKRGI-UHFFFAOYSA-N 1-[2-(4-ethenylphenyl)ethyl]-2-methylpiperidine Chemical compound CC1CCCCN1CCC1=CC=C(C=C)C=C1 KEJHIDWLEDKRGI-UHFFFAOYSA-N 0.000 description 1
- HCJTZFUUMGEKDY-UHFFFAOYSA-N 1-[2-(4-ethenylphenyl)ethyl]-3,3-dimethylpiperidine Chemical compound C1C(C)(C)CCCN1CCC1=CC=C(C=C)C=C1 HCJTZFUUMGEKDY-UHFFFAOYSA-N 0.000 description 1
- LMQOXXLNYSXRTM-UHFFFAOYSA-N 1-[2-(4-ethenylphenyl)ethyl]-3-methylpiperidine Chemical compound C1C(C)CCCN1CCC1=CC=C(C=C)C=C1 LMQOXXLNYSXRTM-UHFFFAOYSA-N 0.000 description 1
- PZELNDZORCHPLO-UHFFFAOYSA-N 1-[2-(4-ethenylphenyl)ethyl]-4-methylpiperidine Chemical compound C1CC(C)CCN1CCC1=CC=C(C=C)C=C1 PZELNDZORCHPLO-UHFFFAOYSA-N 0.000 description 1
- BQYGINUOHFWTKK-UHFFFAOYSA-N 1-[2-(4-ethenylphenyl)ethyl]-4-piperidin-1-ylpiperidine Chemical compound C1=CC(C=C)=CC=C1CCN1CCC(N2CCCCC2)CC1 BQYGINUOHFWTKK-UHFFFAOYSA-N 0.000 description 1
- HKFLEZPANRHUCD-UHFFFAOYSA-N 1-[2-(4-ethenylphenyl)ethyl]-4-pyrrolidin-1-ylpiperidine Chemical compound C1=CC(C=C)=CC=C1CCN1CCC(N2CCCC2)CC1 HKFLEZPANRHUCD-UHFFFAOYSA-N 0.000 description 1
- SJDIZVIRTRTYMN-UHFFFAOYSA-N 1-[2-(4-ethenylphenyl)ethyl]piperidine Chemical compound C1=CC(C=C)=CC=C1CCN1CCCCC1 SJDIZVIRTRTYMN-UHFFFAOYSA-N 0.000 description 1
- VDNSZPNSUQRUMS-UHFFFAOYSA-N 1-cyclohexyl-4-ethenylbenzene Chemical compound C1=CC(C=C)=CC=C1C1CCCCC1 VDNSZPNSUQRUMS-UHFFFAOYSA-N 0.000 description 1
- JZHGRUMIRATHIU-UHFFFAOYSA-N 1-ethenyl-3-methylbenzene Chemical compound CC1=CC=CC(C=C)=C1 JZHGRUMIRATHIU-UHFFFAOYSA-N 0.000 description 1
- IGGDKDTUCAWDAN-UHFFFAOYSA-N 1-vinylnaphthalene Chemical compound C1=CC=C2C(C=C)=CC=CC2=C1 IGGDKDTUCAWDAN-UHFFFAOYSA-N 0.000 description 1
- BIOCRZSYHQYVSG-UHFFFAOYSA-N 2-(4-ethenylphenyl)-n,n-diethylethanamine Chemical compound CCN(CC)CCC1=CC=C(C=C)C=C1 BIOCRZSYHQYVSG-UHFFFAOYSA-N 0.000 description 1
- DDDGAIYRCQXPQI-UHFFFAOYSA-N 2-(4-ethenylphenyl)-n-ethyl-n-methylethanamine Chemical compound CCN(C)CCC1=CC=C(C=C)C=C1 DDDGAIYRCQXPQI-UHFFFAOYSA-N 0.000 description 1
- PDELBHCVXBSVPJ-UHFFFAOYSA-N 2-ethenyl-1,3,5-trimethylbenzene Chemical compound CC1=CC(C)=C(C=C)C(C)=C1 PDELBHCVXBSVPJ-UHFFFAOYSA-N 0.000 description 1
- CRWNQZTZTZWPOF-UHFFFAOYSA-N 2-methyl-4-phenylpyridine Chemical compound C1=NC(C)=CC(C=2C=CC=CC=2)=C1 CRWNQZTZTZWPOF-UHFFFAOYSA-N 0.000 description 1
- DVNPFNZTPMWRAX-UHFFFAOYSA-N 2-triethoxysilylethanethiol Chemical compound CCO[Si](CCS)(OCC)OCC DVNPFNZTPMWRAX-UHFFFAOYSA-N 0.000 description 1
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- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- UIRQYAHKQJQLBW-UHFFFAOYSA-N oxolane trimethoxysilane Chemical compound O1CCCC1.O(C)[SiH](OC)OC UIRQYAHKQJQLBW-UHFFFAOYSA-N 0.000 description 1
- 125000000951 phenoxy group Chemical group [H]C1=C([H])C([H])=C(O*)C([H])=C1[H] 0.000 description 1
- 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
- 239000004014 plasticizer Substances 0.000 description 1
- 229920001084 poly(chloroprene) Polymers 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
- 239000000843 powder Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 150000003141 primary amines Chemical class 0.000 description 1
- LTEDQKPGOZDGRZ-UHFFFAOYSA-L propan-2-olate;titanium(4+);dichloride Chemical compound Cl[Ti+2]Cl.CC(C)[O-].CC(C)[O-] LTEDQKPGOZDGRZ-UHFFFAOYSA-L 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
- 125000005767 propoxymethyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])[#8]C([H])([H])* 0.000 description 1
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 description 1
- 238000010526 radical polymerization reaction Methods 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 238000001226 reprecipitation Methods 0.000 description 1
- 150000003335 secondary amines Chemical class 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
- 239000007787 solid Substances 0.000 description 1
- 125000003011 styrenyl group Chemical group [H]\C(*)=C(/[H])C1=C([H])C([H])=C([H])C([H])=C1[H] 0.000 description 1
- IWOKCMBOJXYDEE-UHFFFAOYSA-N sulfinylmethane Chemical group C=S=O IWOKCMBOJXYDEE-UHFFFAOYSA-N 0.000 description 1
- 125000001174 sulfone group Chemical group 0.000 description 1
- 238000010059 sulfur vulcanization Methods 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
- 238000011191 terminal modification Methods 0.000 description 1
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- LFQCEHFDDXELDD-UHFFFAOYSA-N tetramethyl orthosilicate Chemical compound CO[Si](OC)(OC)OC LFQCEHFDDXELDD-UHFFFAOYSA-N 0.000 description 1
- BRNULMACUQOKMR-UHFFFAOYSA-N thiomorpholine Chemical compound C1CSCCN1 BRNULMACUQOKMR-UHFFFAOYSA-N 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 239000011135 tin Substances 0.000 description 1
- LTSUHJWLSNQKIP-UHFFFAOYSA-J tin(iv) bromide Chemical compound Br[Sn](Br)(Br)Br LTSUHJWLSNQKIP-UHFFFAOYSA-J 0.000 description 1
- IAQRGUVFOMOMEM-ONEGZZNKSA-N trans-but-2-ene Chemical compound C\C=C\C IAQRGUVFOMOMEM-ONEGZZNKSA-N 0.000 description 1
- MMZPUXVBQAQQDQ-UHFFFAOYSA-N triethoxy(2-pyridin-4-ylethyl)silane Chemical compound CCO[Si](OCC)(OCC)CCC1=CC=NC=C1 MMZPUXVBQAQQDQ-UHFFFAOYSA-N 0.000 description 1
- FBBATURSCRIBHN-UHFFFAOYSA-N triethoxy-[3-(3-triethoxysilylpropyldisulfanyl)propyl]silane Chemical compound CCO[Si](OCC)(OCC)CCCSSCCC[Si](OCC)(OCC)OCC FBBATURSCRIBHN-UHFFFAOYSA-N 0.000 description 1
- KLFNHRIZTXWZHT-UHFFFAOYSA-N triethoxy-[3-(3-triethoxysilylpropyltrisulfanyl)propyl]silane Chemical compound CCO[Si](OCC)(OCC)CCCSSSCCC[Si](OCC)(OCC)OCC KLFNHRIZTXWZHT-UHFFFAOYSA-N 0.000 description 1
- JSXKIRYGYMKWSK-UHFFFAOYSA-N trimethoxy-[2-(2-trimethoxysilylethyltetrasulfanyl)ethyl]silane Chemical compound CO[Si](OC)(OC)CCSSSSCC[Si](OC)(OC)OC JSXKIRYGYMKWSK-UHFFFAOYSA-N 0.000 description 1
- JTTSZDBCLAKKAY-UHFFFAOYSA-N trimethoxy-[3-(3-trimethoxysilylpropyltetrasulfanyl)propyl]silane Chemical compound CO[Si](OC)(OC)CCCSSSSCCC[Si](OC)(OC)OC JTTSZDBCLAKKAY-UHFFFAOYSA-N 0.000 description 1
- BPSIOYPQMFLKFR-UHFFFAOYSA-N trimethoxy-[3-(oxiran-2-ylmethoxy)propyl]silane Chemical compound CO[Si](OC)(OC)CCCOCC1CO1 BPSIOYPQMFLKFR-UHFFFAOYSA-N 0.000 description 1
- YUYCVXFAYWRXLS-UHFFFAOYSA-N trimethoxysilane Chemical compound CO[SiH](OC)OC YUYCVXFAYWRXLS-UHFFFAOYSA-N 0.000 description 1
- ABDKAPXRBAPSQN-UHFFFAOYSA-N veratrole Chemical compound COC1=CC=CC=C1OC ABDKAPXRBAPSQN-UHFFFAOYSA-N 0.000 description 1
- 238000004260 weight control Methods 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
Landscapes
- Tires In General (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Abstract
【解決手段】ゴム成分及びシリカを含有し、上記ゴム成分が、共役ジエン化合物、又は共役ジエン化合物及び芳香族ビニル化合物と、特定の一般式で表される第一化合物とを共重合して得られる共重合体、並びに、エポキシ化ジエン系ゴムを含み、上記エポキシ化ジエン系ゴムのエポキシ化率が0.5〜50モル%であるタイヤ用ゴム組成物に関する。
【選択図】なし
Description
Qa−M−(OR15)b
(式中、Qはハロゲン又は水素を表す。Mは金属、炭素又はケイ素を表す。R15は炭素数1〜10の脂肪族炭化水素基又は脂環族炭化水素基を表す。a及びbはa+b=4の関係を満たす整数を表す。)
なお、本発明において、重量平均分子量は、後述する実施例に記載の方法により測定される値である。
Qa−M−(OR15)b
(式中、Qはハロゲン又は水素を表す。Mは金属、炭素又はケイ素を表す。R15は炭素数1〜10の脂肪族炭化水素基又は脂環族炭化水素基を表す。a及びbはa+b=4の関係を満たす整数を表す。)
なお、本発明において、エポキシ化率とは、エポキシ化される前のゴム中の二重結合の総数に対するエポキシ化された二重結合の数の割合(モル%)のことであり、後述する実施例に記載の方法により測定される値である。
なお、シリカのN2SAは、ASTM D3037−81に準じてBET法で測定される値である。
なお、カーボンブラックのN2SAは、JIS K6217のA法によって求められる。
シクロヘキサン:関東化学(株)製のシクロヘキサン
ピロリジン:関東化学(株)製のピロリジン
4−モルホリノピペリジン:シグマアルドリッチ社製の4−モルホリノピペリジン
チオモルホリン:東京化成工業(株)製のチオモルホリン
ジプロピルアミン:シグマアルドリッチ社製のジプロピルアミン
ジビニルベンゼン:シグマアルドリッチ社製のジビニルベンゼン
ブチルリチウム溶夜:関東化学(株)製の1.6M n−ブチルリチウムヘキサン溶液
イソプロパノール:関東化学(株)製のイソプロパノール
ブタジエン:高千穂化学工業(株)製の1,3−ブタジエン
スチレン:関東化学(株)製のスチレン
第一化合物(4):関東化学(株)製の2−ビニルピリジン
変性剤:アヅマックス(株)製の3−(N,N−ジメチルアミノプロピル)トリメトキシシラン
テトラヒドロフラン:関東化学(株)製のテトラヒドロフラン
2,6−tert−ブチル−p−クレゾール:大内新興化学工業(株)製のノクラック200
テトラクロロシラン/ヘキサン溶液:関東化学(株)製の四塩化ケイ素を、窒素置換されたガラス製バイアル瓶中でヘキサンに溶解させたもの(0.1M テトラクロロシラン/ヘキサン溶液)
充分に窒素置換した100ml容器にシクロヘキサン50ml、ピロリジン50mmol、ジビニルベンゼン6.5gを加え、0℃にて1.6M n−ブチルリチウムヘキサン溶液0.7mlを加えて撹拌した。1時間後、イソプロパノールを加えて反応を停止させ、減圧蒸留を行うことで第一化合物(1)を得た。
充分に窒素置換した100ml容器にシクロヘキサン50ml、4−モルホリノピペリジン50mmol、ジビニルベンゼン6.5gを加え、0℃にて1.6M n−ブチルリチウムヘキサン溶液0.7mlを加えて攪拌した。1時間後、イソプロパノールを加えて反応を停止させ、減圧蒸留を行うことで第一化合物(2)を得た。
充分に窒素置換した100ml容器にシクロヘキサン50ml、チオモルホリン50mmol、ジビニルベンゼン6.5gを加え、0℃にて1.6M n−ブチルリチウムヘキサン溶液0.7mlを加えて撹拌した。1時間後、イソプロパノールを加えて反応を停止させ、減圧蒸留を行うことで第一化合物(3)を得た。
充分に窒素置換した100ml容器にシクロヘキサン50ml、ジプロピルアミン50mmol、ジビニルベンゼン6.5gを加え、40℃に加温後、1.6M n−ブチルリチウムヘキサン溶液0.7mlを加えて撹拌した。1時間後、イソプロパノールを加えて反応を停止させ、減圧蒸留を行うことで第一化合物(5)を得た。
充分に窒素置換した1000ml耐圧容器にシクロヘキサン600ml、ブタジエン1mol、テトラヒドロフラン5mmolを加え、40℃で1.6M n−ブチルリチウムヘキサン溶液0.4mlを加えて撹拌した。3時間後、イソプロパノール3mlを加えて重合を停止させた。容器から反応溶液を取り出し、反応溶液に2,6−tert−ブチル−p−クレゾール1gを添加後、メタノールで再沈殿処理を行い、加熱乾燥させて共重合体(1)を得た。
充分に窒素置換した1000ml耐圧容器にシクロヘキサン600ml、ブタジエン1mol、第一化合物(1)5.5mmol(1.1g)を加え、40℃に加温後、1.6M n−ブチルリチウムヘキサン溶液0.4mlを加えて撹拌した。3時間後、イソプロパノール3mlを加えて重合を停止させた。反応溶液に2,6−tert−ブチル−p−クレゾール1gを添加後、メタノールで再沈殿処理を行い、加熱乾燥させて共重合体(2)を得た。
充分に窒素置換した1000ml耐圧容器にシクロヘキサン600ml、ブタジエン1mol、第一化合物(1)5.5mmol(1.1g)を加え、40℃に加温後、1.6M n−ブチルリチウムヘキサン溶液0.4mlを加えて撹拌した。3時間後、3−(N,N−ジメチルアミノプロピル)トリメトキシシランを1mmol添加した。さらに30分撹拌させた後、イソプロパノール3mlを加えて重合を停止させた。反応溶液に2,6−tert−ブチル−p−クレゾール1gを添加後、メタノールで再沈殿処理を行い、加熱乾燥させて共重合体(3)を得た。
表1の配合に従い、製造例7の方法で、共重合体(4)〜(6)をそれぞれ合成した。
充分に窒素置換した1000ml耐圧容器にシクロヘキサン600ml、ブタジエン1mol、第一化合物(5)70mmol(16.2g)を加え、40℃に加温後、1.6M n−ブチルリチウムヘキサン溶液0.4mlを加えて撹拌した。3時間後、3−(N,N−ジメチルアミノプロピル)トリメトキシシランを1mmol添加した。さらに30分撹拌させた後、イソプロパノール3mlを加えて重合を停止させた。反応溶液に2,6−tert−ブチル−p−クレゾール1gを、添加後、メタノールで再沈殿処理を行い、加熱乾燥させて共重合体(7)を得た。
表1の配合に従い、製造例11の方法で、共重合体(8)を合成した。
充分に窒素置換した1000ml耐圧容器にシクロヘキサン600ml、ブタジエン1mol、スチレン0.03mol、第一化合物(1)5.5mmol(1.1g)を加え、40℃に加温後、1.6M n−ブチルリチウムヘキサン溶液0.4mlを加えて撹拌した。3時間後、3−(N,N−ジメチルアミノプロピル)トリメトキシシランを0.1mmol添加した。さらに30分撹拌させた後、0.1M テトラクロロシラン/ヘキサン溶液1ml(0.1mmol)を加えて更に30分攪拌し、重合を停止させた。反応溶液に2,6−tert−ブチル−p−クレゾール1gを添加後、メタノールで再沈殿処理を行い、加熱乾燥させて共重合体(9)を得た。
共重合体の重量平均分子量(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 SUPERMALTPORE HZ−M)を用いて測定した。校正は、標準ポリスチレンによって行った。
共重合体中の第一化合物の含有量は、日本電子(株)製JNM−ECAシリーズのNMR装置を用いて測定した。
天然ゴムラテックス:野村貿易(株)製のHYTEX(固形分60質量%)
過酸化水素水:関東化学(株)製の30質量%過酸化水素水
氷酢酸:関東化学(株)製の99.7質量%酢酸
界面活性剤:花王(株)製のエマルゲン120
300ml三角フラスコに氷酢酸57gと過酸化水素水107gを加え、撹拌後、恒温槽で40℃に保ったまま24時間静置し、過酢酸溶液(1)を得た。
1Lガラス容器に天然ゴムラテックス300g、蒸留水300g、界面活性剤3.6gを加え、10℃に冷却し、攪拌しながら過酢酸溶液(1)164gを10分間かけて滴下した。滴下終了後、天然ゴムラテックスを5分間撹拌し、さらにメタノール1Lをゆっくり注ぎ込み、凝集物を得た。得られた凝集物を1cm程度に粉砕し、2Lの水に入れて一晩放置させた。凝集物を水で数回洗浄し、1日風乾後、減圧乾燥させ、ENR(1)175gを得た。H1NMRの結果、エポキシ化率は10.2モル%であった。また、GPC測定の結果、重量平均分子量は65.0×104であった。
過酢酸溶液(1)の量を16.4g、滴下時間を1分にした以外は製造例14と同じ操作を行い、ENR(2)176gを得た。H1NMRの結果、エポキシ化率は0.9モル%であった。また、GPC測定の結果、重量平均分子量は67.2×104であった。
過酢酸溶液(1)の量を5g、滴下時間を20秒にした以外は製造例14と同じ操作を行い、ENR(3)176gを得た。H1NMRの結果、エポキシ化率は0.3モル%であった。また、GPC測定の結果、重量平均分子量は66.8×104であった。
天然ゴムラテックスの量を150g、蒸留水の量を150g、界面活性剤の量を2.7g、過酢酸溶液(1)の量を541g、滴下時間を30分にした以外は製造例14と同じ操作を行い、ENR(4)87gを得た。H1NMRの結果、エポキシ化率は65.6モル%であった。また、GPC測定の結果、重量平均分子量は69.1×104であった。
NR:TSR20
IR:JSR(株)製のJSR IR2200
ENR(1)〜(4):上記製造例15〜18で調製
ENR(5):マレーシアゴム局(MRB)製のENR(エポキシ化率:25モル%)
BR:宇部興産(株)製のBR150B(シス含量:97質量%)
共重合体(1)〜(9):上記製造例5〜13で合成
カーボンブラック:キャボットジャパン(株)製のショウブラックN220(チッ素吸着比表面積(N2SA):125m2/g)
シリカ:デグッサ社製のウルトラシルVN3(チッ素吸着比表面積(N2SA):175m2/g)
シランカップリング剤:デグッサ社製のSi69
老化防止剤:大内新興化学工業(株)製のノクラック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)
ステアリン酸:日油(株)製のステアリン酸
オイル:出光興産(株)製のミネラルオイルPW−380
酸化亜鉛:三井金属鉱業(株)製の亜鉛華1号
ワックス:大内新興化学工業(株)製のサンノックワックス
硫黄:鶴見化学(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CZ
加硫促進剤(2):大内新興化学工業(株)製のノクセラーD
表2に示す配合処方にしたがって、1.7Lバンバリーミキサーを用いて、硫黄及び加硫促進剤以外の材料を約150℃で5分間混練りし、混練り物を得た。次に、得られた混練り物に硫黄及び加硫促進剤を添加し、2軸オープンロールを用いて、約80℃で5分間練り込み、未加硫ゴム組成物を得た。得られた未加硫ゴム組成物を170℃で20分間プレス加硫し、加硫ゴム組成物を得た。
ティー・エイ・インスツルメント・ジャパン(株)製の動的粘弾性試験機を用いて、温度0℃、周波数5Hz、振幅0.1%における弾性率(0.1%G*)と、温度0℃、周波数5Hz、振幅40%における弾性率(40%G*)とを測定した。得られた測定結果を用いて、40%G*から0.1%G*を引いた値(ΔG*)を算出した。そして、下記式
s=(ΔG*)/(0.1%G*)
で表される指標s(sは0<s<1の値である)を氷上性能と操縦安定性のバランスの指標として用い、比較例6を100として指数表示した。sが0に近いほど、氷上性能及びドライ操縦安定性のバランスが良いことを示す。
Claims (13)
- 前記第一化合物が下記一般式で表される窒素含有化合物である請求項1記載のタイヤ用ゴム組成物。
- 前記共重合体100質量%中の第一化合物の含有量が0.05〜30質量%である請求項1又は2記載のタイヤ用ゴム組成物。
- 前記ゴム成分100質量%中の共重合体の含有量が5質量%以上である請求項1〜3のいずれかに記載のタイヤ用ゴム組成物。
- 前記共重合体の重量平均分子量が1.0×105〜2.0×106である請求項1〜4のいずれかに記載のタイヤ用ゴム組成物。
- 前記共重合体の末端が下記一般式のいずれかで表される第二化合物で変性されている請求項1〜5のいずれかに記載のタイヤ用ゴム組成物。
Qa−M−(OR15)b
(式中、Qはハロゲン又は水素を表す。Mは金属、炭素又はケイ素を表す。R15は炭素数1〜10の脂肪族炭化水素基又は脂環族炭化水素基を表す。a及びbはa+b=4の関係を満たす整数を表す。)
- 前記エポキシ化ジエン系ゴムの重量平均分子量が1.0×103〜2.0×106である請求項1〜6のいずれかに記載のタイヤ用ゴム組成物。
- 前記ゴム成分100質量%中のエポキシ化ジエン系ゴムの含有量が5〜50質量%である請求項1〜7のいずれかに記載のタイヤ用ゴム組成物。
- 前記エポキシ化ジエン系ゴムがエポキシ化天然ゴムである請求項1〜8のいずれかに記載のタイヤ用ゴム組成物。
- 前記ゴム成分100質量部に対するシリカの含有量が10〜150質量部である請求項1〜9のいずれかに記載のタイヤ用ゴム組成物。
- 天然ゴム、イソプレンゴム、スチレンブタジエンゴム及びブタジエンゴムからなる群より選択される少なくとも1種を含有する請求項1〜10のいずれかに記載のタイヤ用ゴム組成物。
- 前記ゴム成分100質量部に対して5〜150質量部のカーボンブラックを含有する請求項1〜11のいずれかに記載のタイヤ用ゴム組成物。
- 請求項1〜12のいずれかに記載のゴム組成物を用いたスタッドレスタイヤ。
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