JP5259239B2 - ゴム組成物及びそれを用いたタイヤ - Google Patents
ゴム組成物及びそれを用いたタイヤ Download PDFInfo
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- JP5259239B2 JP5259239B2 JP2008110050A JP2008110050A JP5259239B2 JP 5259239 B2 JP5259239 B2 JP 5259239B2 JP 2008110050 A JP2008110050 A JP 2008110050A JP 2008110050 A JP2008110050 A JP 2008110050A JP 5259239 B2 JP5259239 B2 JP 5259239B2
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- molecular weight
- rubber
- rubber composition
- polymer
- mass
- Prior art date
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- 239000005060 rubber Substances 0.000 title claims description 100
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- 238000006116 polymerization reaction Methods 0.000 claims description 57
- -1 vinyl compound Chemical class 0.000 claims description 44
- 150000001993 dienes Chemical class 0.000 claims description 40
- 125000000524 functional group Chemical group 0.000 claims description 29
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- 229920002554 vinyl polymer Polymers 0.000 claims description 18
- 244000043261 Hevea brasiliensis Species 0.000 claims description 11
- 239000004793 Polystyrene Substances 0.000 claims description 11
- 229920003052 natural elastomer Polymers 0.000 claims description 11
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- 150000001875 compounds Chemical class 0.000 claims description 9
- 238000005227 gel permeation chromatography Methods 0.000 claims description 9
- 239000000377 silicon dioxide Substances 0.000 claims description 9
- 239000011159 matrix material Substances 0.000 claims description 8
- 229920003244 diene elastomer Polymers 0.000 claims description 6
- 239000006229 carbon black Substances 0.000 claims description 5
- 238000004925 denaturation Methods 0.000 claims description 5
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- 125000003118 aryl group Chemical group 0.000 claims description 2
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- 239000004215 Carbon black (E152) Substances 0.000 description 3
- SJRJJKPEHAURKC-UHFFFAOYSA-N N-Methylmorpholine Chemical compound CN1CCOCC1 SJRJJKPEHAURKC-UHFFFAOYSA-N 0.000 description 3
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 description 3
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- 229920003048 styrene butadiene rubber Polymers 0.000 description 3
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- UPMLOUAZCHDJJD-UHFFFAOYSA-N 4,4'-Diphenylmethane Diisocyanate Chemical compound C1=CC(N=C=O)=CC=C1CC1=CC=C(N=C=O)C=C1 UPMLOUAZCHDJJD-UHFFFAOYSA-N 0.000 description 2
- ATRRKUHOCOJYRX-UHFFFAOYSA-N Ammonium bicarbonate Chemical compound [NH4+].OC([O-])=O ATRRKUHOCOJYRX-UHFFFAOYSA-N 0.000 description 2
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- 239000006237 Intermediate SAF Substances 0.000 description 2
- VQTUBCCKSQIDNK-UHFFFAOYSA-N Isobutene Chemical compound CC(C)=C VQTUBCCKSQIDNK-UHFFFAOYSA-N 0.000 description 2
- RRHGJUQNOFWUDK-UHFFFAOYSA-N Isoprene Chemical compound CC(=C)C=C RRHGJUQNOFWUDK-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
- 239000005062 Polybutadiene Substances 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
- 229910003902 SiCl 4 Inorganic materials 0.000 description 2
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 2
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- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- NTYDXFVCCCPXRG-UHFFFAOYSA-N [Li]C(C)(C)CC(C)(C)C Chemical compound [Li]C(C)(C)CC(C)(C)C NTYDXFVCCCPXRG-UHFFFAOYSA-N 0.000 description 2
- SHJXVDAAVHAKFB-UHFFFAOYSA-N [Li]CCCCCCCCCC Chemical compound [Li]CCCCCCCCCC SHJXVDAAVHAKFB-UHFFFAOYSA-N 0.000 description 2
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- 230000001066 destructive effect Effects 0.000 description 2
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- 125000003710 aryl alkyl group Chemical group 0.000 description 1
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- 125000000753 cycloalkyl group Chemical group 0.000 description 1
- 125000000113 cyclohexyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C1([H])[H] 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- AFZSMODLJJCVPP-UHFFFAOYSA-N dibenzothiazol-2-yl disulfide Chemical compound C1=CC=C2SC(SSC=3SC4=CC=CC=C4N=3)=NC2=C1 AFZSMODLJJCVPP-UHFFFAOYSA-N 0.000 description 1
- SBZXBUIDTXKZTM-UHFFFAOYSA-N diglyme Chemical compound COCCOCCOC SBZXBUIDTXKZTM-UHFFFAOYSA-N 0.000 description 1
- AFABGHUZZDYHJO-UHFFFAOYSA-N dimethyl butane Natural products CCCC(C)C AFABGHUZZDYHJO-UHFFFAOYSA-N 0.000 description 1
- 238000007720 emulsion polymerization reaction Methods 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 229920005555 halobutyl Polymers 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 125000001183 hydrocarbyl group Chemical group 0.000 description 1
- 125000002883 imidazolyl group Chemical group 0.000 description 1
- 125000001841 imino group Chemical group [H]N=* 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 239000003999 initiator Substances 0.000 description 1
- 239000001282 iso-butane Substances 0.000 description 1
- 239000012948 isocyanate Substances 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- AFRJJFRNGGLMDW-UHFFFAOYSA-N lithium amide Chemical class [Li+].[NH2-] AFRJJFRNGGLMDW-UHFFFAOYSA-N 0.000 description 1
- 150000002642 lithium compounds Chemical class 0.000 description 1
- XOXRRQOIDCIGAX-UHFFFAOYSA-N lithium ethyl(propyl)azanide Chemical compound [Li+].CCC[N-]CC XOXRRQOIDCIGAX-UHFFFAOYSA-N 0.000 description 1
- QVLUVDRMLBBAOV-UHFFFAOYSA-N lithium;1-methylpiperazin-4-ide Chemical compound [Li+].CN1CC[N-]CC1 QVLUVDRMLBBAOV-UHFFFAOYSA-N 0.000 description 1
- LHPXHKQJYVVXKC-UHFFFAOYSA-N lithium;benzyl(ethyl)azanide Chemical compound [Li+].CC[N-]CC1=CC=CC=C1 LHPXHKQJYVVXKC-UHFFFAOYSA-N 0.000 description 1
- IQEMUADSVZEVNV-UHFFFAOYSA-N lithium;cyclopentane Chemical compound [Li+].C1CC[CH-]C1 IQEMUADSVZEVNV-UHFFFAOYSA-N 0.000 description 1
- NVMMPHVQFFIBOS-UHFFFAOYSA-N lithium;dibutylazanide Chemical compound [Li+].CCCC[N-]CCCC NVMMPHVQFFIBOS-UHFFFAOYSA-N 0.000 description 1
- FHLMGEQZTIKOBY-UHFFFAOYSA-N lithium;didecylazanide Chemical compound [Li+].CCCCCCCCCC[N-]CCCCCCCCCC FHLMGEQZTIKOBY-UHFFFAOYSA-N 0.000 description 1
- AHNJTQYTRPXLLG-UHFFFAOYSA-N lithium;diethylazanide Chemical compound [Li+].CC[N-]CC AHNJTQYTRPXLLG-UHFFFAOYSA-N 0.000 description 1
- QLEXLQBDIFPTQE-UHFFFAOYSA-N lithium;diheptylazanide Chemical compound [Li+].CCCCCCC[N-]CCCCCCC QLEXLQBDIFPTQE-UHFFFAOYSA-N 0.000 description 1
- HOLCSXZMVPOUQR-UHFFFAOYSA-N lithium;dihexylazanide Chemical compound [Li+].CCCCCC[N-]CCCCCC HOLCSXZMVPOUQR-UHFFFAOYSA-N 0.000 description 1
- YDGSUPBDGKOGQT-UHFFFAOYSA-N lithium;dimethylazanide Chemical compound [Li+].C[N-]C YDGSUPBDGKOGQT-UHFFFAOYSA-N 0.000 description 1
- VZKVUHUYEOZDIY-UHFFFAOYSA-N lithium;dioctylazanide Chemical compound [Li+].CCCCCCCC[N-]CCCCCCCC VZKVUHUYEOZDIY-UHFFFAOYSA-N 0.000 description 1
- OWYFNXMEEFAXTO-UHFFFAOYSA-N lithium;dipropylazanide Chemical compound [Li+].CCC[N-]CCC OWYFNXMEEFAXTO-UHFFFAOYSA-N 0.000 description 1
- OKMANNMCASEBSW-UHFFFAOYSA-N lithium;methyl(2-phenylethyl)azanide Chemical compound [Li+].C[N-]CCC1=CC=CC=C1 OKMANNMCASEBSW-UHFFFAOYSA-N 0.000 description 1
- DWNRISLZVCBTRN-UHFFFAOYSA-N lithium;piperidin-1-ide Chemical compound [Li]N1CCCCC1 DWNRISLZVCBTRN-UHFFFAOYSA-N 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- UVEWQKMPXAHFST-UHFFFAOYSA-N n,1-diphenylmethanimine Chemical compound C=1C=CC=CC=1C=NC1=CC=CC=C1 UVEWQKMPXAHFST-UHFFFAOYSA-N 0.000 description 1
- BVBBZEKOMUDXMZ-UHFFFAOYSA-N n,n-diethyl-3-triethoxysilylpropan-1-amine Chemical compound CCO[Si](OCC)(OCC)CCCN(CC)CC BVBBZEKOMUDXMZ-UHFFFAOYSA-N 0.000 description 1
- CNBZTHQYUOSCDJ-UHFFFAOYSA-N n-(3-triethoxysilylpropyl)butan-2-imine Chemical compound CCO[Si](OCC)(OCC)CCCN=C(C)CC CNBZTHQYUOSCDJ-UHFFFAOYSA-N 0.000 description 1
- IJDNQMDRQITEOD-UHFFFAOYSA-N n-butane Chemical compound CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 description 1
- 125000002560 nitrile group Chemical group 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
- 150000002900 organolithium compounds Chemical class 0.000 description 1
- 239000002245 particle Substances 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
- 229920001084 poly(chloroprene) Polymers 0.000 description 1
- 230000000379 polymerizing effect Effects 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
- HJWLCRVIBGQPNF-UHFFFAOYSA-N prop-2-enylbenzene Chemical compound C=CCC1=CC=CC=C1 HJWLCRVIBGQPNF-UHFFFAOYSA-N 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
- 238000000425 proton nuclear magnetic resonance spectrum Methods 0.000 description 1
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 description 1
- 125000004076 pyridyl group Chemical group 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000012763 reinforcing filler Substances 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- DUIOPKIIICUYRZ-UHFFFAOYSA-N semicarbazide Chemical compound NNC(N)=O DUIOPKIIICUYRZ-UHFFFAOYSA-N 0.000 description 1
- 229910000077 silane Inorganic materials 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
- 239000007790 solid phase Substances 0.000 description 1
- 239000008117 stearic acid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 125000000472 sulfonyl group Chemical group *S(*)(=O)=O 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
- HPGGPRDJHPYFRM-UHFFFAOYSA-J tin(iv) chloride Chemical compound Cl[Sn](Cl)(Cl)Cl HPGGPRDJHPYFRM-UHFFFAOYSA-J 0.000 description 1
- DVKJHBMWWAPEIU-UHFFFAOYSA-N toluene 2,4-diisocyanate Chemical compound CC1=CC=C(N=C=O)C=C1N=C=O DVKJHBMWWAPEIU-UHFFFAOYSA-N 0.000 description 1
- IAQRGUVFOMOMEM-ONEGZZNKSA-N trans-but-2-ene Chemical compound C\C=C\C IAQRGUVFOMOMEM-ONEGZZNKSA-N 0.000 description 1
- KMLVDTJUQJXRRH-UHFFFAOYSA-N triethoxy(2-pyridin-2-ylethyl)silane Chemical compound CCO[Si](OCC)(OCC)CCC1=CC=CC=N1 KMLVDTJUQJXRRH-UHFFFAOYSA-N 0.000 description 1
- FRGPKMWIYVTFIQ-UHFFFAOYSA-N triethoxy(3-isocyanatopropyl)silane Chemical compound CCO[Si](OCC)(OCC)CCCN=C=O FRGPKMWIYVTFIQ-UHFFFAOYSA-N 0.000 description 1
- JXUKBNICSRJFAP-UHFFFAOYSA-N triethoxy-[3-(oxiran-2-ylmethoxy)propyl]silane Chemical compound CCO[Si](OCC)(OCC)CCCOCC1CO1 JXUKBNICSRJFAP-UHFFFAOYSA-N 0.000 description 1
- XVZMLSWFBPLMEA-UHFFFAOYSA-N trimethoxy(2-pyridin-2-ylethyl)silane Chemical compound CO[Si](OC)(OC)CCC1=CC=CC=N1 XVZMLSWFBPLMEA-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
- ABDKAPXRBAPSQN-UHFFFAOYSA-N veratrole Chemical compound COC1=CC=CC=C1OC ABDKAPXRBAPSQN-UHFFFAOYSA-N 0.000 description 1
- 238000004073 vulcanization Methods 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 description 1
- UMGLWJIVIBWZCW-UHFFFAOYSA-L zinc;benzenesulfinate Chemical compound [Zn+2].[O-]S(=O)C1=CC=CC=C1.[O-]S(=O)C1=CC=CC=C1 UMGLWJIVIBWZCW-UHFFFAOYSA-L 0.000 description 1
Landscapes
- Tires In General (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Description
R1 aZXb ・・・ (I)
[式中、R1は、それぞれ独立して炭素数1〜20のアルキル基、炭素数3〜20のシクロアルキル基、炭素数6〜20のアリール基及び炭素数7〜20のアラルキル基からなる群から選択され;Zは、スズ又はケイ素であり;Xは、それぞれ独立して塩素又は臭素であり;aは0〜3で、bは1〜4で、但し、a+b=4である]で表される変性剤も好ましい。式(I)の変性剤で変性することで、重合体(B)の耐コールドフロー性を改良することができる。なお、式(I)の変性剤で変性して得られる重合体(B)は、少なくとも一種のスズ−炭素結合又はケイ素−炭素結合を有する。
Vs = {(ρ0−ρg)/(ρ1−ρg)−1} × 100 ・・・ (II)
[式中、ρ1はゴム組成物の密度(g/cm3)、ρ0はゴム組成物における固相部の密度(g/cm3)、ρgはゴム組成物における気泡部の密度(g/cm3)である]により算出できる。また、気泡部の密度ρgは無視できる程度に小さいので、上記気泡率(Vs)(%)を、下記式(III):
Vs =(ρ0/ρ1−1)× 100 ・・・ (III)
により算出してもよい。
乾燥し、窒素置換した800mLの耐圧ガラス容器に、1,3-ブタジエンのシクロヘキサン溶液(16質量%)、スチレンのシクロへキサン溶液(21質量%)を、1,3-ブタジエン単量体40g、スチレン単量体10gとなるように注入し、2,2-ジテトラヒドロフリルプロパン0.66mmolを注入し、更にn-ブチルリチウム(n-BuLi)3.96mmolを加えた後、50℃の温水浴中で1.5時間重合反応を行った。この際の重合転化率は、ほぼ100%であった。その後、重合反応系に、2,6-ジ-t-ブチル-p-クレゾール(BHT)のイソプロパノール溶液(BHT濃度:5質量%)0.5mLを添加し、重合反応を停止させ、更に常法に従って乾燥して重合体(B-1)を得た。
乾燥し、窒素置換した800mLの耐圧ガラス容器に、1,3-ブタジエンのシクロヘキサン溶液(16質量%)、スチレンのシクロへキサン溶液(21質量%)を、1,3-ブタジエン単量体40g、スチレン単量体10gとなるように注入し、2,2-ジテトラヒドロフリルプロパン0.66mmolを注入し、更にn-ブチルリチウム(n-BuLi)0.33mmolを加えた後、50℃の温水浴中で1.5時間重合反応を行った。この際の重合転化率は、ほぼ100%であった。その後、重合反応系に、2,6-ジ-t-ブチル-p-クレゾール(BHT)のイソプロパノール溶液(BHT濃度:5質量%)0.4mLを添加し、重合反応を停止させ、更に常法に従って乾燥して重合体(B-2)を得た。
乾燥し、窒素置換した800mLの耐圧ガラス容器に、1,3-ブタジエンのシクロヘキサン溶液(16質量%)、スチレンのシクロへキサン溶液(21質量%)を、1,3-ブタジエン単量体40g、スチレン単量体1.0gとなるように注入し、2,2-ジテトラヒドロフリルプロパン0.66mmolを注入し、更にn-ブチルリチウム(n-BuLi)1.32mmolを加えた後、50℃の温水浴中で1.5時間重合反応を行った。この際の重合転化率は、ほぼ100%であった。その後、重合反応系に、2,6-ジ-t-ブチル-p-クレゾール(BHT)のイソプロパノール溶液(BHT濃度:5質量%)0.5mLを添加し、重合反応を停止させ、更に常法に従って乾燥して重合体(B-3)を得た。
乾燥し、窒素置換した800mLの耐圧ガラス容器に、1,3-ブタジエンのシクロヘキサン溶液(16質量%)、スチレンのシクロへキサン溶液(21質量%)を、1,3-ブタジエン単量体40g、スチレン単量体10gとなるように注入し、2,2-ジテトラヒドロフリルプロパン0.66mmolを注入し、更にn-ブチルリチウム(n-BuLi)1.32mmolを加えた後、50℃の温水浴中で1.5時間重合反応を行った。この際の重合転化率は、ほぼ100%であった。その後、重合反応系に、2,6-ジ-t-ブチル-p-クレゾール(BHT)のイソプロパノール溶液(BHT濃度:5質量%)0.5mLを添加し、重合反応を停止させ、更に常法に従って乾燥して重合体(B-4)を得た。
乾燥し、窒素置換した800mLの耐圧ガラス容器に、1,3-ブタジエンのシクロヘキサン溶液(16質量%)、スチレンのシクロへキサン溶液(21質量%)を、1,3-ブタジエン単量体40g、スチレン単量体10gとなるように注入し、2,2-ジテトラヒドロフリルプロパン0.66mmolを注入し、更にn-ブチルリチウム(n-BuLi)1.32mmolを加えた後、50℃の温水浴中で1.5時間重合反応を行った。次に、重合反応系に変性剤として四塩化スズ(SnCl4)0.33mmolを速やかに加え、更に50℃で30分間変性反応を行った。この際の重合転化率は、ほぼ100%であった。その後、重合反応系に、2,6-ジ-t-ブチル-p-クレゾール(BHT)のイソプロパノール溶液(BHT濃度:5質量%)0.5mLを添加し、重合反応を停止させ、更に常法に従って乾燥して重合体(B-5)を得た。
乾燥し、窒素置換した800mLの耐圧ガラス容器に、1,3-ブタジエンのシクロヘキサン溶液(16質量%)、スチレンのシクロへキサン溶液(21質量%)を、1,3-ブタジエン単量体40g、スチレン単量体1.0gとなるように注入し、2,2-ジテトラヒドロフリルプロパン0.66mmolを注入し、更にインサイチューで調製したリチウムへキサンメチレンイミド[HMI−Li;ヘキサメチレンイミン(HMI)/リチウム(Li)モル比=0.9]をリチウム当量で1.06mmolを加えた後、50℃の温水浴中で1.5時間重合反応を行った。この際の重合転化率は、ほぼ100%であった。その後、重合反応系に、2,6-ジ-t-ブチル-p-クレゾール(BHT)のイソプロパノール溶液(BHT濃度:5質量%)0.5mLを添加し、重合反応を停止させ、更に常法に従って乾燥して重合体(B-6)を得た。
ゲルパーミエーションクロマトグラフィー[GPC:東ソー製HLC−8020、カラム:東ソー製GMH−XL(2本直列)、検出器:示差屈折率計(RI)]で単分散ポリスチレンを基準として、各重合体の変性停止なしの状態でのポリスチレン換算重量平均分子量(Mw)を求めた。
重合体のミクロ構造を赤外法(モレロ法)で求め、重合体の結合スチレン量を1H-NMRスペクトルの積分比より求めた。
レオメトリックス社製の粘弾性測定装置を用いて、周波数15Hz、歪1.0%の条件で、温度-20℃,50℃での貯蔵弾性率(G')を測定した。-20℃での貯蔵弾性率(G')については、比較例1のゴム組成物の貯蔵弾性率(G')の逆数を100として指数表示し、指数値が大きい程、氷雪上性能に優れることを示す。一方、50℃での貯蔵弾性率(G')については、比較例1のゴム組成物の貯蔵弾性率(G')を100として指数表示し、指数値が大きい程、ドライ性能に優れることを示す。
レオメトリックス社製の粘弾性測定装置を用い、周波数10Hz、歪0.1%、温度0℃の条件でtanδを測定し、比較例1のゴム組成物のtanδを100として指数表示した。指数値が大きい程、ウェット性能に優れることを示す。
*2 シス-1,4-ポリブタジエン,UBEPOL BR150L(商品名),宇部興産社製,ポリスチレン換算重量平均分子量=50万.
*3 Nipsil AQ(商品名),日本シリカ社製.
*4 Si69(商品名),デグッサ社製.
*5 重合体(B-1)〜(B-6),使用した重合体(B)の種類を表3に示す.
*6 N-イソプロピル-N'-フェニル-p-フェニレンジアミン.
*7 ジベンゾチアジルジスルフィド.
*8 N-シクロヘキシル-2-ベンゾチアゾジルスルフェンアミド.
*9 ジニトロソペンタメチレンテトラミン(DPT):尿素=1:1(質量比).
Claims (6)
- ゲル浸透クロマトグラフィーで測定したポリスチレン換算重量平均分子量が150,000〜3,000,000の天然ゴム及び合成ジエン系ゴムの内の少なくとも一種からなるゴム成分(A)100質量部に対し、芳香族ビニル化合物の結合量が5質量%以上で、ゲル浸透クロマトグラフィーで変性停止なしの状態を測定したポリスチレン換算重量平均分子量が50,000以上で且つ150,000未満の低分子量共役ジエン系重合体(B)を1〜60質量部配合してなるゴム組成物であって、
該ゴム組成物がゴムマトリックス中に気泡を包含しており、
前記低分子量共役ジエン系重合体(B)が、充填剤と相互作用する官能基を少なくとも一つ有し、
前記低分子量共役ジエン系重合体(B)の充填剤と相互作用する官能基が、スズ含有官能基であることを特徴とするゴム組成物。 - 前記低分子量共役ジエン系重合体(B)が、重合活性部位をスズ含有化合物で変性されたものであることを特徴とする請求項1に記載のゴム組成物。
- 前記ゴム成分(A)100質量部に対して、更に充填剤(C)を20〜100質量部含有することを特徴とする請求項1に記載のゴム組成物。
- 前記充填剤(C)がカーボンブラック及びシリカの少なくとも一方であることを特徴とする請求項3に記載のゴム組成物。
- 請求項1〜4のいずれかに記載のゴム組成物を、トレッド部の少なくとも接地部分に用いたことを特徴とするタイヤ。
- スタッドレスタイヤ又はオールシーズン用タイヤであることを特徴とする請求項5に記載のタイヤ。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2008110050A JP5259239B2 (ja) | 2008-04-21 | 2008-04-21 | ゴム組成物及びそれを用いたタイヤ |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| WO2011052027A1 (ja) * | 2009-10-26 | 2011-05-05 | 株式会社ブリヂストン | 空気入りタイヤ |
| JP6799669B2 (ja) * | 2016-08-17 | 2020-12-16 | コンチネンタル・ライフェン・ドイチュラント・ゲゼルシャフト・ミト・ベシュレンクテル・ハフツング | 硫黄架橋性ゴム混合物および車両用タイヤ |
| US12227651B2 (en) | 2016-08-17 | 2025-02-18 | Continental Reifen Deutschland Gmbh | Rubber blend, sulfur-crosslinkable rubber mixture, and vehicle tire |
| ES2895964T3 (es) * | 2016-08-17 | 2022-02-23 | Continental Reifen Deutschland Gmbh | Mezcla de caucho reticulable con azufre y neumático para vehículo |
| ES2895416T3 (es) | 2016-08-17 | 2022-02-21 | Continental Reifen Deutschland Gmbh | Combinación de caucho, mezcla de cauchos reticulable con azufre y neumático de vehículo |
| CN109562642B (zh) | 2016-08-17 | 2022-01-11 | 大陆轮胎德国有限公司 | 硫可交联橡胶混合物和车辆轮胎 |
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| EP0794224B1 (en) * | 1994-11-24 | 2000-01-26 | Nippon Zeon Co., Ltd. | Diene rubber, process for producing the same, and rubber composition |
| JP3569062B2 (ja) * | 1996-01-18 | 2004-09-22 | 株式会社ブリヂストン | タイヤ |
| JP5350577B2 (ja) * | 2005-09-15 | 2013-11-27 | 株式会社ブリヂストン | ゴム組成物およびそれを用いたタイヤ |
| JP5251044B2 (ja) * | 2006-09-04 | 2013-07-31 | 株式会社ブリヂストン | ゴム組成物及びそれを用いたタイヤ |
| JP5399619B2 (ja) * | 2006-09-04 | 2014-01-29 | 株式会社ブリヂストン | ゴム組成物及びそれを用いた空気入りタイヤ |
| CN101528839B (zh) * | 2006-09-04 | 2013-06-19 | 株式会社普利司通 | 橡胶组合物以及使用该橡胶组合物的充气轮胎 |
| JP2008127402A (ja) * | 2006-11-16 | 2008-06-05 | Bridgestone Corp | 空気入りタイヤ |
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