WO2012165038A1 - トレッド用ゴム組成物及び空気入りタイヤ - Google Patents
トレッド用ゴム組成物及び空気入りタイヤ Download PDFInfo
- Publication number
- WO2012165038A1 WO2012165038A1 PCT/JP2012/059112 JP2012059112W WO2012165038A1 WO 2012165038 A1 WO2012165038 A1 WO 2012165038A1 JP 2012059112 W JP2012059112 W JP 2012059112W WO 2012165038 A1 WO2012165038 A1 WO 2012165038A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- mass
- rubber
- tread
- rubber composition
- less
- Prior art date
Links
- 229920001971 elastomer Polymers 0.000 title claims abstract description 67
- 239000005060 rubber Substances 0.000 title claims abstract description 67
- 239000000203 mixture Substances 0.000 title claims abstract description 56
- 229920003048 styrene butadiene rubber Polymers 0.000 claims abstract description 47
- 229910052761 rare earth metal Inorganic materials 0.000 claims abstract description 27
- 239000005062 Polybutadiene Substances 0.000 claims abstract description 26
- 239000003054 catalyst Substances 0.000 claims abstract description 14
- 229920002857 polybutadiene Polymers 0.000 claims abstract description 8
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims description 50
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 37
- 229920002554 vinyl polymer Polymers 0.000 claims description 29
- 239000000377 silicon dioxide Substances 0.000 claims description 18
- 239000012744 reinforcing agent Substances 0.000 claims description 17
- 125000003118 aryl group Chemical group 0.000 claims description 16
- 238000003811 acetone extraction Methods 0.000 claims description 12
- 239000006229 carbon black Substances 0.000 claims description 11
- XYLMUPLGERFSHI-UHFFFAOYSA-N alpha-Methylstyrene Chemical compound CC(=C)C1=CC=CC=C1 XYLMUPLGERFSHI-UHFFFAOYSA-N 0.000 claims description 7
- 230000000379 polymerizing effect Effects 0.000 claims description 3
- 150000002910 rare earth metals Chemical class 0.000 abstract description 15
- 230000002787 reinforcement Effects 0.000 abstract description 5
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical class C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 abstract description 4
- 238000010528 free radical solution polymerization reaction Methods 0.000 abstract description 3
- 239000002174 Styrene-butadiene Substances 0.000 description 28
- 239000000446 fuel Substances 0.000 description 27
- 238000000034 method Methods 0.000 description 20
- 238000005096 rolling process Methods 0.000 description 15
- 238000005299 abrasion Methods 0.000 description 13
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 13
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 10
- 230000000052 comparative effect Effects 0.000 description 10
- 150000001875 compounds Chemical class 0.000 description 10
- 238000004898 kneading Methods 0.000 description 9
- 238000012360 testing method Methods 0.000 description 7
- 239000004636 vulcanized rubber Substances 0.000 description 7
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 6
- 125000004432 carbon atom Chemical group C* 0.000 description 6
- 230000007423 decrease Effects 0.000 description 6
- 238000002156 mixing Methods 0.000 description 6
- 239000003607 modifier Substances 0.000 description 6
- 239000003921 oil Substances 0.000 description 6
- 238000006116 polymerization reaction Methods 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- 238000004073 vulcanization Methods 0.000 description 6
- 125000000217 alkyl group Chemical group 0.000 description 5
- 230000006872 improvement Effects 0.000 description 5
- 229910052757 nitrogen Inorganic materials 0.000 description 5
- 229920000642 polymer Polymers 0.000 description 5
- 238000001179 sorption measurement Methods 0.000 description 5
- 229910052717 sulfur Inorganic materials 0.000 description 5
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 4
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 description 4
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 4
- -1 aluminum compound Chemical class 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 150000002603 lanthanum Chemical class 0.000 description 4
- 239000011593 sulfur Substances 0.000 description 4
- YXIWHUQXZSMYRE-UHFFFAOYSA-N 1,3-benzothiazole-2-thiol Chemical compound C1=CC=C2SC(S)=NC2=C1 YXIWHUQXZSMYRE-UHFFFAOYSA-N 0.000 description 3
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- 244000043261 Hevea brasiliensis Species 0.000 description 3
- IMNFDUFMRHMDMM-UHFFFAOYSA-N N-Heptane Chemical compound CCCCCCC IMNFDUFMRHMDMM-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
- 125000003545 alkoxy group Chemical group 0.000 description 3
- 239000002585 base Substances 0.000 description 3
- 229920005549 butyl rubber Polymers 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 229920001577 copolymer Polymers 0.000 description 3
- 238000011156 evaluation Methods 0.000 description 3
- 238000009472 formulation Methods 0.000 description 3
- 229910052736 halogen Inorganic materials 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 239000000178 monomer Substances 0.000 description 3
- 229920003052 natural elastomer Polymers 0.000 description 3
- 229920001194 natural rubber Polymers 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
- 238000012545 processing Methods 0.000 description 3
- 239000008117 stearic acid Substances 0.000 description 3
- 239000011787 zinc oxide Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229920002943 EPDM rubber Polymers 0.000 description 2
- 239000002879 Lewis base Substances 0.000 description 2
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 description 2
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 2
- 101100496858 Mus musculus Colec12 gene Proteins 0.000 description 2
- 239000006087 Silane Coupling Agent Substances 0.000 description 2
- YRKCREAYFQTBPV-UHFFFAOYSA-N acetylacetone Chemical compound CC(=O)CC(C)=O YRKCREAYFQTBPV-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 230000003712 anti-aging effect Effects 0.000 description 2
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 2
- 230000002542 deteriorative effect Effects 0.000 description 2
- 229920003244 diene elastomer Polymers 0.000 description 2
- 150000002367 halogens Chemical class 0.000 description 2
- 229920001519 homopolymer Polymers 0.000 description 2
- 229920003049 isoprene rubber Polymers 0.000 description 2
- 150000007527 lewis bases Chemical class 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 2
- 229920001084 poly(chloroprene) Polymers 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- WYTZZXDRDKSJID-UHFFFAOYSA-N (3-aminopropyl)triethoxysilane Chemical compound CCO[Si](OCC)(OCC)CCCN WYTZZXDRDKSJID-UHFFFAOYSA-N 0.000 description 1
- OWRCNXZUPFZXOS-UHFFFAOYSA-N 1,3-diphenylguanidine Chemical compound C=1C=CC=CC=1NC(=N)NC1=CC=CC=C1 OWRCNXZUPFZXOS-UHFFFAOYSA-N 0.000 description 1
- ZYAASQNKCWTPKI-UHFFFAOYSA-N 3-[dimethoxy(methyl)silyl]propan-1-amine Chemical compound CO[Si](C)(OC)CCCN ZYAASQNKCWTPKI-UHFFFAOYSA-N 0.000 description 1
- MCLXOMWIZZCOCA-UHFFFAOYSA-N 3-[methoxy(dimethyl)silyl]propan-1-amine Chemical compound CO[Si](C)(C)CCCN MCLXOMWIZZCOCA-UHFFFAOYSA-N 0.000 description 1
- SJECZPVISLOESU-UHFFFAOYSA-N 3-trimethoxysilylpropan-1-amine Chemical compound CO[Si](OC)(OC)CCCN SJECZPVISLOESU-UHFFFAOYSA-N 0.000 description 1
- 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 1
- ZZMVLMVFYMGSMY-UHFFFAOYSA-N 4-n-(4-methylpentan-2-yl)-1-n-phenylbenzene-1,4-diamine Chemical compound C1=CC(NC(C)CC(C)C)=CC=C1NC1=CC=CC=C1 ZZMVLMVFYMGSMY-UHFFFAOYSA-N 0.000 description 1
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 1
- ODOKREQUMBFWIT-UHFFFAOYSA-N CN(C)CC[Si](OC)(OC)OC.NC(C[Si](OC)(OC)OC)C Chemical compound CN(C)CC[Si](OC)(OC)OC.NC(C[Si](OC)(OC)OC)C ODOKREQUMBFWIT-UHFFFAOYSA-N 0.000 description 1
- XDTMQSROBMDMFD-UHFFFAOYSA-N Cyclohexane Chemical compound C1CCCCC1 XDTMQSROBMDMFD-UHFFFAOYSA-N 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 238000004566 IR spectroscopy Methods 0.000 description 1
- 238000005481 NMR spectroscopy Methods 0.000 description 1
- 229910052779 Neodymium Inorganic materials 0.000 description 1
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 229910021627 Tin(IV) chloride Inorganic materials 0.000 description 1
- 125000004036 acetal group Chemical group 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 150000001408 amides Chemical class 0.000 description 1
- 238000010539 anionic addition polymerization reaction Methods 0.000 description 1
- 239000000427 antigen Substances 0.000 description 1
- 102000036639 antigens Human genes 0.000 description 1
- 108091007433 antigens Proteins 0.000 description 1
- 125000003710 aryl alkyl group Chemical group 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000012662 bulk polymerization Methods 0.000 description 1
- 150000007942 carboxylates Chemical class 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000007429 general method Methods 0.000 description 1
- 150000004820 halides Chemical class 0.000 description 1
- 229920005555 halobutyl Polymers 0.000 description 1
- 125000005843 halogen group Chemical group 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 150000002430 hydrocarbons Chemical group 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 229910001629 magnesium chloride Inorganic materials 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- 229910001507 metal halide Inorganic materials 0.000 description 1
- 150000005309 metal halides Chemical class 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- ZLDHYRXZZNDOKU-UHFFFAOYSA-N n,n-diethyl-3-trimethoxysilylpropan-1-amine Chemical compound CCN(CC)CCC[Si](OC)(OC)OC ZLDHYRXZZNDOKU-UHFFFAOYSA-N 0.000 description 1
- QIOYHIUHPGORLS-UHFFFAOYSA-N n,n-dimethyl-3-trimethoxysilylpropan-1-amine Chemical compound CO[Si](OC)(OC)CCCN(C)C QIOYHIUHPGORLS-UHFFFAOYSA-N 0.000 description 1
- QEFYFXOXNSNQGX-UHFFFAOYSA-N neodymium atom Chemical compound [Nd] QEFYFXOXNSNQGX-UHFFFAOYSA-N 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 239000011164 primary particle Substances 0.000 description 1
- 239000012763 reinforcing filler Substances 0.000 description 1
- 230000004043 responsiveness Effects 0.000 description 1
- 230000001953 sensory effect Effects 0.000 description 1
- 239000005049 silicon tetrachloride Substances 0.000 description 1
- 125000004469 siloxy group Chemical group [SiH3]O* 0.000 description 1
- 150000003384 small molecules Chemical class 0.000 description 1
- 229910052712 strontium Inorganic materials 0.000 description 1
- 238000010059 sulfur vulcanization Methods 0.000 description 1
- 238000003786 synthesis reaction 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
- 125000003396 thiol group Chemical group [H]S* 0.000 description 1
- HPGGPRDJHPYFRM-UHFFFAOYSA-J tin(iv) chloride Chemical compound Cl[Sn](Cl)(Cl)Cl HPGGPRDJHPYFRM-UHFFFAOYSA-J 0.000 description 1
- XJDNKRIXUMDJCW-UHFFFAOYSA-J titanium tetrachloride Chemical compound Cl[Ti](Cl)(Cl)Cl XJDNKRIXUMDJCW-UHFFFAOYSA-J 0.000 description 1
- 238000013191 viscoelastic testing Methods 0.000 description 1
- 239000001993 wax Substances 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
Classifications
-
- 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
- C08L9/06—Copolymers with styrene
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C1/00—Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition
- B60C1/0016—Compositions of the tread
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/01—Use of inorganic substances as compounding ingredients characterized by their specific function
- C08K3/013—Fillers, pigments or reinforcing additives
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L15/00—Compositions of rubber derivatives
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/04—Carbon
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/34—Silicon-containing compounds
- C08K3/36—Silica
Definitions
- the present invention relates to a rubber composition for a tread, and a pneumatic tire having a tread produced therefrom.
- the rolling resistance of the tire is largely attributed to energy loss associated with repeated deformation during traveling.
- a rubber composition having two layers of rubber of a tread portion having the highest contribution rate in rolling resistance among the tire members, and a small energy loss at the inner side (base tread) are proposed.
- reducing the energy loss of the cap tread rubber causes problems such as a decrease in grip performance and deterioration in abrasion resistance and chipping resistance, and further when energy loss is reduced by using a modified polymer for silica.
- the amount is too large, the processability also deteriorates.
- the amount of the reinforcing agent is reduced to reduce the energy loss, the rubber rigidity tends to be lowered and the steering stability (handling performance) tends to be deteriorated.
- Patent Document 1 discloses a rubber composition containing modified styrene butadiene rubber, silica and the like having improved performance such as low fuel consumption, but the point of improving the above-mentioned performance in a well-balanced manner has not been disclosed. There is room for improvement.
- the present invention solves the above-mentioned problems and can improve steering stability, wear resistance and fuel economy in a well-balanced manner, and can also improve wet grip performance and processability in a well-balanced manner, and a rubber composition for tread
- the purpose is to provide a pneumatic tire.
- the present invention relates to a rubber composition for tread containing a terminally modified solution-polymerized styrene-butadiene rubber, a butadiene rubber synthesized using a rare earth element-based catalyst, and a reinforcing agent.
- the rubber composition contains 10 to 70% by mass of the terminally modified solution-polymerized styrene butadiene rubber and 5 to 30% by mass of butadiene rubber synthesized using the rare earth element-based catalyst in 100% by mass of the rubber component.
- the reinforcing agent preferably contains 3 to 20 parts by mass of carbon black and 30 to 100 parts by mass of silica based on 100 parts by mass of the rubber component.
- the above rubber composition has a styrene content of 20% by mass or more, a weight average molecular weight (Mw) of 800,000 or more, and a weight average molecular weight / number average molecular weight (Mw / Mn) of 0.9 to 2.5 in 100% by mass of the rubber component. It is preferable to contain 10 to 40% by mass of styrene butadiene rubber of Preferably, 1 to 8 parts by mass of an aromatic vinyl polymer obtained by polymerizing ⁇ -methylstyrene and / or styrene is preferably contained with respect to 100 parts by mass of the rubber component.
- the content of the reinforcing agent and the acetone extraction amount preferably satisfy the following formula. 3.0 ⁇ (content of reinforcing agent / acetone extraction amount) ⁇ 10.0
- the present invention also relates to a pneumatic tire having a tread made using the above rubber composition.
- the present invention since it is a rubber composition for tread containing a terminally modified solution-polymerized styrene butadiene rubber, a butadiene rubber synthesized using a rare earth element-based catalyst, and a reinforcing agent, steering stability, wear resistance and low resistance can be obtained. Fuel efficiency can be improved in a well-balanced manner. In addition, wet grip performance can be improved in a well-balanced manner by blending styrene butadiene rubber having a high styrene content and a specific weight average molecular weight, and processability is also improved in a balanced manner by further blending a specific aromatic vinyl polymer it can. Therefore, a pneumatic tire excellent in these performance balances can be provided.
- the rubber composition for a tread according to the present invention comprises terminally modified solution-polymerized styrene butadiene rubber (hereinafter also referred to as modified SBR), butadiene rubber synthesized using a rare earth element-based catalyst (hereinafter also referred to as rare earth based BR) and a reinforcing agent.
- modified SBR terminally modified solution-polymerized styrene butadiene rubber
- rare earth based BR a rare earth element-based catalyst
- the modified SBR and the rare earth BR By combining the modified SBR and the rare earth BR with a reinforcing agent, it is possible to improve the balance of handling stability (handling performance), wear resistance, and fuel economy, and the balance of these performances is synergistically improved. Further, by further blending SBR having a high styrene content and a specific Mw, wet grip performance can be improved without deteriorating fuel economy, and in addition to steering stability, wear resistance, fuel economy, and wet The grip performance can also be improved in a well-balanced manner.
- the ratio of the content of reinforcing agent such as carbon black and silica to the amount of acetone extracted such as oil is adjusted within a predetermined range. Can significantly improve the aforementioned performance balance.
- Modified SBR can be prepared by reacting the active end (polymerization end) of SBR obtained by solution polymerization with a modifier, and the modifier has an interaction with silica.
- modified SBR for example, those modified with a compound represented by the following formula (1) described in JP-A-2010-111753 can be suitably used.
- R 1 , R 2 and R 3 are the same or different and each is an alkyl group or an alkoxy group (preferably having 1 to 8 carbon atoms, more preferably 1 to 6 carbon atoms, still more preferably 1 to 4 carbon atoms) Of the alkoxy group), silyloxy group, acetal group, carboxyl group (—COOH), mercapto group (—SH) or derivatives thereof
- R 4 and R 5 are the same or different and are a hydrogen atom or an alkyl group (preferably Represents an alkyl group having 1 to 4 carbon atoms, n is an integer (preferably 1 to 5, more preferably 2 to 4, and still more preferably 3).
- R 1 , R 2 and R 3 an alkoxy group is desirable, and as R 4 and R 5 , an alkyl group is desirable.
- Specific examples of the compound represented by the above formula (1) include 3-aminopropyltrimethoxysilane, 3-aminopropyltriethoxysilane, 3-aminopropyldimethylmethoxysilane, 3-aminopropylmethyldimethoxysilane, 2-aminopropyltrimethoxysilane Dimethylaminoethyltrimethoxysilane, 3-diethylaminopropyltrimethoxysilane, 3-dimethylaminopropyltrimethoxysilane and the like can be mentioned. These may be used alone or in combination of two or more.
- the method for modifying styrene butadiene rubber with the compound (modifier) represented by the above formula (1) is described in JP-B 6-53768, JP-B 6-57767, JP-A 2003-514078, etc. Methods known in the art, such as the methods described above, can be used. For example, it can be modified by contacting styrene butadiene rubber with a modifier. Specifically, after preparing styrene butadiene rubber by anionic polymerization, a predetermined amount of modifier is added to the rubber solution to polymerize styrene butadiene rubber The method of making an end (active end) and a modifier react, etc. are mentioned.
- the bound styrene content of the modified SBR is preferably 10% by mass or more, more preferably 20% by mass or more, from the viewpoint of improving grip performance.
- the content is preferably 45% by mass or less, more preferably 40% by mass or less, from the viewpoint of improving the wear resistance.
- the styrene content of SBR is calculated by H 1 -NMR measurement.
- the content of the modified SBR in 100% by mass of the rubber component is preferably 10% by mass or more, more preferably 20% by mass or more, and still more preferably 40% by mass or more. If the amount is less than 10% by mass, fuel economy may not be sufficiently improved.
- the content of the modified SBR is preferably 70% by mass or less, more preferably 65% by mass or less. If it exceeds 70% by mass, the proportion of other rubber components decreases, and the above-mentioned performance balance may not be sufficiently improved.
- the rare earth-based BR can use a general-purpose product in the tire industry.
- a known rare earth element-based catalyst can be used for the synthesis (polymerization) of the rare earth-based BR, for example, a catalyst containing a lanthanum series rare earth element compound, an organic aluminum compound, an aluminoxane, a halogen-containing compound, and optionally a Lewis base.
- a catalyst containing a lanthanum series rare earth element compound for example, a catalyst containing a lanthanum series rare earth element compound, an organic aluminum compound, an aluminoxane, a halogen-containing compound, and optionally a Lewis base.
- Nd-based catalyst using a neodymium (Nd) -containing compound as a lanthanum series rare earth element compound is preferable in that BR having a high cis content and a low vinyl content can be obtained.
- Examples of the lanthanum series rare earth element compounds include halides, carboxylates, alcoholates, thioalcoholates and amides of rare earth metals of atomic numbers 57 to 71.
- the use of an Nd-based catalyst is preferable in that BR having a high cis content and a low vinyl content can be obtained.
- the organic aluminum compound is represented by AlR a R b R c (wherein, R a , R b and R c are the same or different and each represents hydrogen or a hydrocarbon group having 1 to 8 carbon atoms). You can use one.
- Examples of the aluminoxane include chain aluminoxanes and cyclic aluminoxanes.
- halogen-containing compound AlX k R d 3-k (wherein, X is a halogen, R d is an alkyl group having 1 to 20 carbon atoms, an aryl group or an aralkyl group, k is 1, 1.5, 2 or 3)
- Strontium halides such as Me 3 SrCl, Me 2 SrCl 2 , MeSrHCl 2 , MeSrCl 3 and the like; and metal halides such as silicon tetrachloride, tin tetrachloride, titanium tetrachloride and the like.
- the Lewis base is used to complex a lanthanum series rare earth element compound, and acetylacetone, ketone, alcohol and the like are suitably used.
- the rare earth element-based catalyst may be used in the form of silica, magnesia, magnesium chloride or the like even when used in the state of being dissolved in an organic solvent (n-hexane, cyclohexane, n-heptane, toluene, xylene, benzene, etc.) during butadiene polymerization. It may be supported on a suitable carrier and used.
- the polymerization conditions may be either solution polymerization or bulk polymerization, the preferred polymerization temperature is ⁇ 30 to 150 ° C., and the polymerization pressure may be optionally selected depending on other conditions.
- the Mooney viscosity ML 1 + 4 (100 ° C.) of the rare earth BR is preferably 35 or more, more preferably 40 or more. If it is less than 35, the viscosity of the unvulcanized rubber composition is low, and there is a possibility that an appropriate thickness can not be secured after vulcanization.
- the Mooney viscosity is preferably 55 or less, more preferably 50 or less. If it exceeds 55, the unvulcanized rubber composition may become too hard and it may be difficult to extrude with a smooth edge.
- the Mooney viscosity is measured in accordance with ISO 289 and JIS K6300.
- the ratio (Mw / Mn) of the weight average molecular weight (Mw) to the number average molecular weight (Mn) of the rare earth BR is preferably 1.2 or more, more preferably 1.5 or more. If it is less than 1.2, the processability tends to deteriorate.
- the Mw / Mn is preferably 5 or less, more preferably 4 or less. If it exceeds 5, the improvement effect of the fuel efficiency tends to be reduced.
- the Mw of the rare earth BR is preferably 300,000 or more, more preferably 480,000 or more, preferably 1,000,000 or less, more preferably 800,000 or less.
- the Mn of the rare earth-based BR is preferably 100,000 or more, more preferably 150,000 or more, preferably 600,000 or less, more preferably 400,000 or less. If Mw or Mn is less than the lower limit, fuel economy, abrasion resistance, steering stability and wet grip performance tend to be deteriorated. If the upper limit is exceeded, processability tends to deteriorate.
- Mw and Mn are gel permeation chromatograph (GPC) (GPC-8000 series manufactured by Tosoh Corp., detector: differential refractometer, column: TSKGEL SUPERMALTPORE HZ- manufactured by Tosoh Corp.) Based on the measurement value according to M), it is obtained by standard polystyrene conversion.
- GPC gel permeation chromatograph
- the cis content of the rare earth BR is preferably 90% by mass or more, more preferably 93% by mass or more, and still more preferably 95% by mass or more. If the amount is less than 90% by mass, fuel economy may not be sufficiently improved.
- the vinyl content of the rare earth BR is preferably 0.9% by mass or less, more preferably 0.8% by mass or less. If it exceeds 0.9% by mass, fuel economy, abrasion resistance, steering stability and wet grip performance tend to deteriorate.
- the vinyl content (1,2-linked butadiene unit amount) and the cis content (cis-1,4-linked butadiene unit amount) can be measured by infrared absorption spectroscopy.
- the content of the rare earth based BR in 100% by mass of the rubber component is preferably 5% by mass or more, more preferably 10% by mass or more, and still more preferably 15% by mass or more. If the amount is less than 5% by mass, fuel economy may not be sufficiently improved.
- the content of the rare earth BR is preferably 30% by mass or less, more preferably 27% by mass or less. If it exceeds 30% by mass, the proportion of other rubber components decreases, and the above-mentioned performance balance may not be sufficiently improved.
- a styrene butadiene rubber having a styrene content of 20% by mass or more, a weight average molecular weight (Mw) of 800,000 or more, and a weight average molecular weight / number average molecular weight (Mw / Mn) of 0.9 to 2.5 (hereinafter, high styrene SBR It is preferable to further include (also referred to as linear polymer type). As a result, the wet grip performance can be enhanced and the aforementioned performance balance can be greatly improved without deteriorating the fuel economy.
- the lower limit of the styrene content of the high styrene SBR is preferably 25% by mass or more, more preferably 30% by mass or more, and the upper limit is preferably 45% by mass or less from the viewpoint of effectively improving the performance balance described above. And more preferably 40% by mass or less.
- the Mw of the high styrene SBR is preferably 900,000 or more, more preferably 1,000,000 or more. If it is less than 800,000, fuel economy, abrasion resistance, steering stability and wet grip performance tend to deteriorate.
- the Mw is preferably 2.5 million or less, more preferably 2.3 million or less, and still more preferably 2 million or less. If it exceeds 2.5 million, the processability tends to deteriorate.
- the Mw / Mn of the high styrene SBR is preferably 0.9 to 2.0, more preferably 1.0 to 1.5. As a result, good fuel economy, wear resistance, steering stability, and wet grip performance can be obtained.
- the vinyl content of the high-styrene SBR is preferably 25% by mass or less, more preferably 20% by mass or less, and still more preferably 17% by mass or less. If the amount is more than 25% by mass, fuel economy and abrasion resistance tend to be deteriorated.
- the lower limit of the vinyl content is not particularly limited, but is preferably 5% by mass or more, more preferably 10% by mass or more.
- diene rubbers may be blended.
- Other diene rubbers include, for example, natural rubber (NR), epoxidized natural rubber (ENR), isoprene rubber (IR), ethylene-propylene-diene rubber (EPDM), butyl rubber (IIR), halogenated butyl rubber (X- IIR), chloroprene rubber (CR), acrylonitrile (NBR) and the like.
- NR natural rubber
- EMR epoxidized natural rubber
- IR isoprene rubber
- EPDM ethylene-propylene-diene rubber
- IIR butyl rubber
- X- IIR halogenated butyl rubber
- chloroprene rubber CR
- NBR acrylonitrile
- Other styrene butadiene rubbers and butadiene rubbers can also be used.
- a reinforcing filler widely used in the tire industry can be used, and it is preferable to use carbon black and silica in combination.
- the carbon black and the silica are not particularly limited, and common ones can be used.
- silica it is preferable to use it in combination with a known silane coupling agent in order to accelerate the dispersion of the silica.
- the nitrogen adsorption specific surface area (N 2 SA) of carbon black is preferably 70 m 2 / g or more, more preferably 90 m 2 / g or more. If it is less than 70 m 2 / g, sufficient reinforcement may not be obtained.
- the nitrogen adsorption specific surface area of carbon black is preferably 140 m 2 / g or less, more preferably 120 m 2 / g or less. If it exceeds 140 m 2 / g, the fuel economy tends to deteriorate.
- the nitrogen adsorption specific surface area of carbon black is a value measured in accordance with JIS K 6217-2: 2001.
- the content of carbon black is preferably 3 parts by mass or more, more preferably 4 parts by mass or more, with respect to 100 parts by mass of the rubber component. If the amount is less than 3 parts by mass, sufficient reinforcement may not be obtained.
- the content is preferably 20 parts by mass or less, more preferably 15 parts by mass or less, and further preferably 10 parts by mass or less. If the amount is more than 20 parts by mass, fuel economy tends to deteriorate.
- the nitrogen adsorption specific surface area (N 2 SA) of silica is preferably 100 m 2 / g or more, more preferably 150 m 2 / g or more. If it is less than 100 m 2 / g, sufficient reinforcement may not be obtained.
- the nitrogen adsorption specific surface area of silica is preferably 220 m 2 / g or less, more preferably 190 m 2 / g or less. If it exceeds 220 m 2 / g, fuel economy tends to deteriorate.
- the content of silica is preferably 30 parts by mass or more, more preferably 50 parts by mass or more, with respect to 100 parts by mass of the rubber component. If the amount is less than 30 parts by mass, sufficient reinforcement may not be obtained.
- the content is preferably 100 parts by mass or less, more preferably 90 parts by mass or less. If the amount is more than 100 parts by mass, the fuel economy tends to deteriorate.
- the content of silica in the total of 100% by mass is preferably 60% by mass or more, more preferably 75% by mass or more, and still more preferably 85% by mass or more. If the amount is less than 60% by mass, the aforementioned performance may not be improved in a well-balanced manner.
- the silica content is preferably 98% by mass or less.
- an aromatic vinyl polymer obtained by polymerizing ⁇ -methylstyrene and / or styrene it is desirable to further blend an aromatic vinyl polymer obtained by polymerizing ⁇ -methylstyrene and / or styrene.
- the aromatic vinyl polymer is blended in addition to the high styrene SBR, not only wet grip performance can be improved, but also kneading processability can be improved.
- aromatic vinyl polymer styrene and ⁇ -methylstyrene are used as the aromatic vinyl monomer (unit), and either a homopolymer of each monomer or a copolymer of both monomers is used. Good.
- aromatic vinyl polymer a homopolymer of ⁇ -methylstyrene or a copolymer of ⁇ -methylstyrene and styrene is preferable because it is economical, easy to process, and excellent in wet grip performance.
- the softening point (Softening Point) of the aromatic vinyl polymer is preferably 100 ° C. or less, more preferably 92 ° C. or less, still more preferably 88 ° C. or less. When the temperature exceeds 100 ° C., the abrasion resistance, the grip performance at low temperature, and the kneading processability tend to be deteriorated.
- the softening point is preferably 30 ° C. or more, more preferably 60 ° C. or more, and still more preferably 70 ° C. or more. When the temperature is less than 30 ° C., the wet grip performance and the kneading processability tend to be deteriorated.
- the softening point is a temperature at which the softening point defined in JIS K 6220 is measured by a ring and ball type softening point measuring device, and the sphere is lowered.
- the weight average molecular weight (Mw) of the aromatic vinyl polymer is preferably 500 or more, more preferably 800 or more. If it is less than 500, there is a tendency that it is difficult to obtain sufficient improvement effects of rolling resistance characteristics, wet grip performance and kneading processability. Moreover, the weight average molecular weight of the said aromatic vinyl polymer becomes like this. Preferably it is 3000 or less, More preferably, it is 2000 or less. If it exceeds 3000, the abrasion resistance tends to deteriorate, and a sufficient improvement effect on the kneadability can not be obtained.
- the content of the aromatic vinyl polymer is preferably 1 part by mass or more, more preferably 2 parts by mass or more, with respect to 100 parts by mass of the rubber component. If the amount is less than 1 part by mass, sufficient improvement in wet grip performance and kneading processability tends to be hardly obtained.
- the content of the aromatic vinyl polymer is preferably 8 parts by mass or less, more preferably 7 parts by mass or less. If the amount is more than 8 parts by mass, rolling resistance characteristics, steering stability and wear resistance tend to be deteriorated.
- compounding agents generally used in the production of rubber compositions such as zinc oxide, stearic acid, anti-aging agents, softeners such as oil, wax, sulfur, A vulcanization accelerator etc. can be mix
- the rubber composition of the present invention is produced by a general method. That is, it can manufacture by the method etc. which knead
- the rubber composition of the present invention thus obtained has an acetone extraction amount of preferably 20% by mass or less, more preferably 17% by mass or less. If the amount is more than 20% by mass, the rigidity tends to decrease and the steering stability tends to deteriorate.
- the acetone extraction amount is preferably 2% by mass or more, more preferably 4% by mass or more. If the amount is less than 2% by mass, the rubber becomes too hard, and abrasion resistance and the like tend to be deteriorated.
- an acetone extraction amount can be measured by the method as described in the Example mentioned later.
- the content (% by mass) of the reinforcing agent and the acetone extraction amount (% by mass) are “3.0 ⁇ (content of reinforcing agent / acetone extraction amount) ⁇ 10.0” It is preferable to satisfy the formula represented. As a result, the aforementioned performance can be improved in a well-balanced manner.
- the lower limit of the above formula is preferably 3.5 or more, more preferably 4.0 or more, and the upper limit is preferably 9.0 or less, more preferably 8.5 or less.
- the rubber composition of the present invention is used in a tread, and can be suitably applied to, for example, a cap tread made of a cap tread and a base tread.
- a tread comprising a cap tread and a base tread can be produced by a known method, for example, a method of laminating a sheet-like rubber composition into a predetermined shape, or charging of the rubber composition into two or more extruders The method of forming in 2 layers at the head exit of an extruder etc. is mentioned.
- the pneumatic tire of the present invention is manufactured by the usual method using the above rubber composition. That is, a rubber composition containing various additives according to need is extruded according to the shape of the tread at the unvulcanized stage, and molded by a usual method on a tire molding machine. It bonds together with a member and forms an unvulcanized tire.
- the unvulcanized tire can be heated and pressurized in a vulcanizer to produce a pneumatic tire.
- the pneumatic tire according to the present invention is suitably used as a passenger car tire or a truck / bus tire.
- Modified SBR 2 Modified styrene butadiene rubber manufactured by Sumitomo Chemical Co., Ltd.
- Modified SBR 3 Modified styrene butadiene rubber manufactured by Sumitomo Chemical Co., Ltd.
- T3830 (Styrene content: 33% by mass, vinyl content: 34% by mass, Mw: 950,000, Mn 370,000, Mw / Mn: 2.6) manufactured by Asahi Kasei Co., Ltd.
- Non-modified SBR SLR6430 manufactured by Dow (a linear polymer type high styrene SBR, styrene content: 40% by mass, vinyl content: 14% by mass, Mw: 2,000,000, Mn: 1.9 million, Mw / Mn: 1.05) BR: Ube Industries, Ltd.
- BR150B Nd-based BR1 BUNA-CB24 (BR synthesized using Nd-based catalyst, cis content: 96% by mass, vinyl content: 0.7% by mass, ML 1 + 4 (100 ° C.): 45, Mw / Mn : 2.69, Mw: 500,000, Mn: 186,000)
- Nd BR 2 BR 730 manufactured by JSR Corporation (BR synthesized using an Nd catalyst, cis content: 96.6% by mass, vinyl content: 0.8% by mass, ML 1 + 4 (100 ° C.): 51, Mw / Mn: 1.9, Mw: 577,000, Mn: 307,000)
- Carbon black Diablack I (N 220, N 2 SA: 114 m 2 / g) manufactured by Mitsubishi Chemical Corporation
- Silica Ultrasil VN3 manufactured by Evonik Degussa (average primary particle diameter: 15 nm, N 2 SA: 175 m 2 / g)
- Silane coupling agent
- Anti-aging agent Antigen 6C (N- (1,3-dimethylbutyl) -N'-phenyl-p-phenylenediamine) manufactured by Sumitomo Chemical Co., Ltd.
- Stearic acid Stearic acid "Nuka” manufactured by NOF Corporation
- Zinc oxide Zinc oxide No. 1 sulfur manufactured by Mitsui Mining & Smelting Co., Ltd.
- Powdered sulfur vulcanization accelerator NS manufactured by Karuizawa Sulfur Co., Ltd.
- NS Noccellar NS (N-tert-butyl manufactured by Ouchi Emerging Chemical Industry Co., Ltd.) -2-benzothiazolylsulfenamide)
- Vulcanization accelerator M Noccellar M (2-mercaptobenzothiazole) manufactured by Ouchi Emerging Chemical Industry Co., Ltd.
- Vulcanization accelerator DPG Noxceler D (N, N'-diphenylguanidine) manufactured by Ouchi Shinko Chemical Co., Ltd.
- Example and Comparative Example According to the formulation shown in Tables 1 to 5, chemicals other than sulfur and a vulcanization accelerator were kneaded using a 1.7 L Banbury mixer manufactured by Kobe Steel Co., Ltd. Next, using an open roll, sulfur and a vulcanization accelerator were added to the obtained kneaded product and kneaded to obtain an unvulcanized rubber composition. The obtained unvulcanized rubber composition was press vulcanized at 150 ° C. for 30 minutes with a 2 mm-thick mold to obtain a vulcanized rubber composition (vulcanized rubber sheet).
- the obtained unvulcanized rubber composition is molded into a cap tread shape on a tire molding machine, bonded to another tire member, and vulcanized at 150 ° C. for 30 minutes to obtain a test tire (tire size: 195 / 65R15) was produced.
- acetone extraction amount According to the measuring method of the acetone extraction amount based on JIS K 6229, the amount of the substance extracted by acetone contained in the said vulcanized rubber composition was measured, and it represented by mass%.
- the acetone extraction amount is an indicator of the concentration of an organic low molecular weight compound such as oil or wax contained in the vulcanized rubber composition.
- the hardness (Hs) of the vulcanized rubber sheet was measured by a method according to JIS K6253. The measurement temperature was 30 ° C.
- the vehicle equipped with the test tire was driven, and the responsiveness when the steering wheel was turned was evaluated by sensory evaluation of the test driver. The evaluation was performed on the following basis. :: The car responds very quickly when the steering wheel is turned. ⁇ : The car responds quickly when the steering wheel is turned. :: The response of the car when turning the steering wheel is rather slow. X: The response of the car when turning the steering wheel is slow.
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Tires In General (AREA)
Abstract
Description
また、上記ゴム成分100質量部に対して、α-メチルスチレン及び/又はスチレンを重合して得られる芳香族ビニル重合体を1~8質量部含むことが好ましい。
3.0≦(補強剤の含有量/アセトン抽出量)≦10.0
なお、本発明において、SBRのスチレン量は、H1-NMR測定により算出される。
なお、ムーニー粘度は、ISO289、JIS K6300に準じて測定される。
なお、本発明において、ビニル含量(1,2-結合ブタジエン単位量)及びシス含量(シス-1,4-結合ブタジエン単位量)は、赤外吸収スペクトル分析法によって測定できる。
カーボンブラック、シリカとしては特に限定されず、一般的なものを使用できる。また、シリカを使用する場合は、シリカの分散を促進するため、公知のシランカップリング剤と併用することが好ましい。
なお、カーボンブラックの窒素吸着比表面積は、JIS K 6217-2:2001に準拠して測定される値である。
なお、本明細書において、軟化点とは、JIS K 6220に規定される軟化点を環球式軟化点測定装置で測定し、球が降下した温度である。
なお、アセトン抽出量は、後述する実施例に記載の方法で測定できる。
変性SBR1(HPR355):JSR(株)製のHPR355(変性S-SBR(アルコキシシランでカップリングし末端に導入、R1、R2及びR3=-OCH3、R4及びR5=H、n=3)、スチレン含量:28質量%、ビニル含量56質量%)
変性SBR2:住友化学(株)製の変性スチレンブタジエンゴム(ビニル含量57質量%、スチレン含量25質量%、R1、R2及びR3=-OCH3、R4及びR5=-CH2CH3、n=3)
変性SBR3:住友化学(株)製の変性スチレンブタジエンゴム(ビニル含量57質量%、スチレン含量25質量%、R1、R2及びR3=-OC2H5、R4及びR5=-CH2CH3、n=3)
非変性SBR(T3830):旭化成(株)製のT3830(スチレン含量:33質量%、ビニル含量:34質量%、Mw:95万、Mn37万、Mw/Mn:2.6)
非変性SBR(SLR6430):ダウ社製のSLR6430(リニア高分子タイプのハイスチレンSBR、スチレン含量:40質量%、ビニル含量:14質量%、Mw:200万、Mn:190万、Mw/Mn:1.05)
BR:宇部興産(株)製BR150B
Nd系BR1:ランクセス社製のBUNA-CB24(Nd系触媒を用いて合成したBR、シス含量:96質量%、ビニル含量:0.7質量%、ML1+4(100℃):45、Mw/Mn:2.69、Mw:50万、Mn:18.6万)
Nd系BR2:JSR(株)製のBR730(Nd系触媒を用いて合成したBR、シス含量:96.6質量%、ビニル含量:0.8質量%、ML1+4(100℃):51、Mw/Mn:1.9、Mw:57.7万、Mn:30.7万)
カーボンブラック:三菱化学(株)製のダイアブラックI(N220、N2SA:114m2/g)
シリカ:エボニックデグッサ社製のウルトラシルVN3(平均一次粒子径:15nm、N2SA:175m2/g)
シランカップリング剤:エボニックデグッサ社製のSi266
芳香族ビニル重合体:Arizona chemical社製のSYLVARES SA85(α-メチルスチレンとスチレンとの共重合体、軟化点:85℃、Mw:1000)
アロマオイル:JX日鉱日石エネルギー(株)のプロセスX-140
ワックス:大内新興化学工業(株)製のサンノックN
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)
ステアリン酸:日油(株)製のステアリン酸「椿」
酸化亜鉛:三井金属鉱業(株)製の亜鉛華1号
硫黄:軽井沢硫黄(株)製の粉末硫黄
加硫促進剤NS: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M:大内新興化学工業(株)製のノクセラーM(2-メルカプトベンゾチアゾール)
加硫促進剤DPG: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)
表1~5に示す配合処方にしたがい、(株)神戸製鋼製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薬品を混練りした。次に、オープンロールを用いて、得られた混練り物に硫黄及び加硫促進剤を添加して練り込み、未加硫ゴム組成物を得た。得られた未加硫ゴム組成物を150℃で30分間、2mm厚の金型でプレス加硫し、加硫ゴム組成物(加硫ゴムシート)を得た。
また、得られた未加硫ゴム組成物をタイヤ成型機上でキャップトレッド形状に成形し、他のタイヤ部材と貼り合わせ、150℃で30分間加硫することにより、試験用タイヤ(タイヤサイズ:195/65R15)を製造した。
JIS K 6229に準拠したアセトン抽出量の測定方法にしたがい、上記加硫ゴム組成物中に含まれるアセトンにより抽出される物質の量を測定し、質量%で表した。該アセトン抽出量は、上記加硫ゴム組成物に含有されるオイル、ワックスなどの有機低分子化合物の濃度の指標となるものである。なお、JIS K6229(1998年)には、A法とB法の2法が規定されているが、本願ではA法を採用する。
上記加硫ゴムシートの硬度(Hs)をJIS K6253に準拠した方法で測定した。測定温度は30℃とした。
(株)岩本製作所製の粘弾性スペクトロメータを用いて、周波数10Hz、初期歪み10%及び動歪2%の条件下で、70℃における上記加硫ゴムシートの損失正接tanδと複素粘弾性E*を測定し、比較例1のtanδ指数を100、E*指数を100とし、下記計算式により、各配合のtanδ、E*を指数表示した。なお、tanδ指数が小さいほど発熱が小さく、低燃費性に優れることを示し、E*指数が大きいほどE*が高く、ゴムが硬いことを示す。
(tanδ指数)=(各配合のtanδ)/(比較例1のtanδ)×100
(E*指数)=(各配合のE*)/(比較例1のE*)×100
上記試験用タイヤを装着した車両を走行させ、テストドライバーの官能評価によりハンドルを切った際の応答性を評価した。評価は以下の基準で行った。
◎:ハンドルを切った際の車の応答が非常に早い。
○:ハンドルを切った際の車の応答が早い。
△:ハンドルを切った際の車の応答がやや遅い。
×:ハンドルを切った際の車の応答が遅い。
試験用タイヤを車両に装着し、走行距離30000km前後のトレッドの溝探さの変化を測定した。溝深さが1mm減るときの走行距離を算出し、下記式により指数表示した。数値が大きいほど、耐摩耗性に優れることを示す。
(耐摩耗性指数)=(各配合の溝深さが1mm減るときの走行距離)/(比較例1の溝深さが1mm減るときの走行距離)×100
転がり抵抗試験機を用い、リム(15×6JJ)、内圧(230kPa)、荷重(3.43kN)、速度(80km/h)の条件で、試験用タイヤを走行させたときの転がり抵抗を測定した。結果は、比較例1の転がり抵抗指数を100とし、下記計算式により指数表示した。転がり抵抗指数が小さいほど転がり抵抗が低く、低燃費性に優れることを示す。
(転がり抵抗指数)=(各配合の転がり抵抗)/(比較例1の転がり抵抗)×100
スタンレー社製のポータブルスキッドテスターを用いてASTM E303-83の方法に沿って測定し、比較例1の測定値を100として下記計算式により指数表示した。指数が大きいほどウェットグリップ性能が優れる。
(ウェットスキッド指数)=(各配合の測定値)/(比較例1の測定値)×100
バンバリーミキサーにて混練加工した練ゴム(未加硫ゴム組成物)について、オープンロールで加工性を評価した。評価は以下の基準で行った。
◎:ロール加工が容易に可能である。
○:ゴムの可塑性はやや劣るが、ロールにゴムが巻き付き、加工が可能である。
△:ゴムの可塑性が悪く、ロール加工でバギングが発生する。
×:ゴムの可塑性が悪く、生地がボロボロになり、ロール加工が困難である。
Claims (7)
- 末端変性溶液重合スチレンブタジエンゴム、希土類元素系触媒を用いて合成されたブタジエンゴム及び補強剤を含有するトレッド用ゴム組成物。
- ゴム成分100質量%中、前記末端変性溶液重合スチレンブタジエンゴムを10~70質量%、前記希土類元素系触媒を用いて合成されたブタジエンゴムを5~30質量%含む請求項1記載のトレッド用ゴム組成物。
- 前記補強剤は、前記ゴム成分100質量部に対して、カーボンブラックを3~20質量部、シリカを30~100質量部含む請求項1又は2記載のトレッド用ゴム組成物。
- 前記ゴム成分100質量%中、スチレン含量20質量%以上、重量平均分子量(Mw)80万以上、重量平均分子量/数平均分子量(Mw/Mn)0.9~2.5のスチレンブタジエンゴムを10~40質量%含む請求項1~3のいずれかに記載のトレッド用ゴム組成物。
- 前記ゴム成分100質量部に対して、α-メチルスチレン及び/又はスチレンを重合して得られる芳香族ビニル重合体を1~8質量部含む請求項1~4のいずれかに記載のトレッド用ゴム組成物。
- 前記補強剤の含有量及びアセトン抽出量が下記式を満たす請求項1~5のいずれかに記載のトレッド用ゴム組成物。
3.0≦(補強剤の含有量/アセトン抽出量)≦10.0 - 請求項1~6のいずれかに記載のゴム組成物を用いて作製したトレッドを有する空気入りタイヤ。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201280026614.6A CN103562295B (zh) | 2011-05-30 | 2012-04-03 | 胎面用橡胶组合物和充气轮胎 |
EP12793999.9A EP2712890B1 (en) | 2011-05-30 | 2012-04-03 | Rubber composition for tread, and pneumatic tire |
US14/005,798 US9403971B2 (en) | 2011-05-30 | 2012-04-03 | Rubber composition for tread, and pneumatic tire |
JP2013517914A JP5706963B2 (ja) | 2011-05-30 | 2012-04-03 | トレッド用ゴム組成物及び空気入りタイヤ |
BR112013030711A BR112013030711A2 (pt) | 2011-05-30 | 2012-04-03 | composição de borracha para banda de rodagem e pneumático |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2011-120780 | 2011-05-30 | ||
JP2011120780 | 2011-05-30 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2012165038A1 true WO2012165038A1 (ja) | 2012-12-06 |
Family
ID=47258903
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2012/059112 WO2012165038A1 (ja) | 2011-05-30 | 2012-04-03 | トレッド用ゴム組成物及び空気入りタイヤ |
Country Status (6)
Country | Link |
---|---|
US (1) | US9403971B2 (ja) |
EP (1) | EP2712890B1 (ja) |
JP (1) | JP5706963B2 (ja) |
CN (1) | CN103562295B (ja) |
BR (1) | BR112013030711A2 (ja) |
WO (1) | WO2012165038A1 (ja) |
Cited By (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2014125546A (ja) * | 2012-12-26 | 2014-07-07 | Sumitomo Rubber Ind Ltd | トレッド用ゴム組成物及び空気入りタイヤ |
CN104072816A (zh) * | 2013-03-28 | 2014-10-01 | 住友橡胶工业株式会社 | 胎面基部用橡胶组合物 |
WO2014157145A1 (ja) * | 2013-03-29 | 2014-10-02 | 株式会社クラレ | ゴム組成物、加硫ゴム及びタイヤ |
JP2014201637A (ja) * | 2013-04-03 | 2014-10-27 | 住友ゴム工業株式会社 | タイヤ用ゴム組成物及び空気入りタイヤ |
WO2015040991A1 (ja) * | 2013-09-17 | 2015-03-26 | 住友ゴム工業株式会社 | 空気入りタイヤ |
JP2015232114A (ja) * | 2014-05-15 | 2015-12-24 | 住友ゴム工業株式会社 | ゴム組成物及び空気入りタイヤ |
JP2016044201A (ja) * | 2014-08-20 | 2016-04-04 | 住友ゴム工業株式会社 | タイヤ用ゴム組成物及び空気入りタイヤ |
WO2016072134A1 (ja) * | 2014-11-05 | 2016-05-12 | 横浜ゴム株式会社 | コンベアベルト用ゴム組成物、及びこれを用いるコンベアベルト |
EP3012290A4 (en) * | 2013-07-05 | 2017-02-08 | Sumitomo Rubber Industries, Ltd. | Tire rubber composition and pneumatic tire |
JP2017101176A (ja) * | 2015-12-03 | 2017-06-08 | 住友ゴム工業株式会社 | タイヤ用ゴム組成物の製造方法 |
US10137733B2 (en) | 2013-11-20 | 2018-11-27 | Sumitomo Rubber Industries, Ltd. | Pneumatic tire |
JP2019085445A (ja) * | 2017-11-01 | 2019-06-06 | 住友ゴム工業株式会社 | ゴム組成物 |
JP2019104772A (ja) * | 2017-12-08 | 2019-06-27 | 住友ゴム工業株式会社 | タイヤ用ゴム組成物および空気入りタイヤ |
JP2019104771A (ja) * | 2017-12-08 | 2019-06-27 | 住友ゴム工業株式会社 | タイヤ用ゴム組成物および空気入りタイヤ |
CN110358162A (zh) * | 2018-04-09 | 2019-10-22 | 住友橡胶工业株式会社 | 轮胎用橡胶组合物和轮胎 |
JPWO2018147312A1 (ja) * | 2017-02-08 | 2019-11-07 | 日本エラストマー株式会社 | 共役ジエン系重合体、共役ジエン系重合体組成物、及びタイヤ |
JP2020006871A (ja) * | 2018-07-11 | 2020-01-16 | 住友ゴム工業株式会社 | 空気入りタイヤ |
US10626253B2 (en) | 2013-05-02 | 2020-04-21 | The Yokohama Rubber Co., Ltd. | Tire rubber composition |
CN111491999A (zh) * | 2017-12-19 | 2020-08-04 | 米其林集团总公司 | 交联体系基于有机过氧化物的轮胎胎面 |
JP2022511924A (ja) * | 2019-09-03 | 2022-02-01 | エルジー・ケム・リミテッド | ゴム組成物およびそれから製造された成形品 |
JP2022024962A (ja) * | 2020-07-28 | 2022-02-09 | 住友ゴム工業株式会社 | 空気入りタイヤ |
JP2022163941A (ja) * | 2021-04-15 | 2022-10-27 | 住友ゴム工業株式会社 | タイヤ |
WO2024010009A1 (ja) * | 2022-07-04 | 2024-01-11 | 株式会社ブリヂストン | ポリマー組成物及びその製造方法、並びに、ゴム組成物及びタイヤ |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ES2712729T3 (es) | 2010-02-17 | 2019-05-14 | Continental Reifen Deutschland Gmbh | Mezcla de caucho reticulable con azufre |
KR20160140624A (ko) * | 2014-03-31 | 2016-12-07 | 제온 코포레이션 | 변성 공액 디엔계 고무의 제조 방법 |
JP6258177B2 (ja) | 2014-09-25 | 2018-01-10 | 住友ゴム工業株式会社 | タイヤ用ゴム組成物およびタイヤ |
EP3369588B1 (en) * | 2015-10-27 | 2020-08-05 | Sumitomo Rubber Industries, Ltd. | Pneumatic tire and crosslinked rubber composition |
WO2017073494A1 (ja) * | 2015-10-27 | 2017-05-04 | 住友ゴム工業株式会社 | 空気入りタイヤおよび架橋ゴム組成物 |
EP3546512A4 (en) * | 2016-11-24 | 2020-04-22 | Sumitomo Rubber Industries, Ltd. | Rubber composition for tread, and tire |
CN109485791B (zh) * | 2017-09-13 | 2021-10-19 | 中国石油化工股份有限公司 | 线形丁苯共聚物及其制备方法和组合物以及芳族乙烯基树脂及其制备方法 |
JP7192329B2 (ja) * | 2018-09-12 | 2022-12-20 | 住友ゴム工業株式会社 | トレッドゴム組成物及び空気入りタイヤ |
CN110183750A (zh) * | 2019-06-25 | 2019-08-30 | 益凯新材料有限公司 | 一种含有顺丁橡胶的橡胶组合物制备工艺 |
US11441018B2 (en) | 2019-09-12 | 2022-09-13 | The Goodyear Tire & Rubber Company | Pneumatic tire having tread with three elastomers |
JP7670056B2 (ja) * | 2020-06-15 | 2025-04-30 | 住友ゴム工業株式会社 | タイヤ |
US12209183B2 (en) | 2021-03-16 | 2025-01-28 | The Goodyear Rubber & Tire Company | Pneumatic tire having tread with three elastomers |
JP2023088838A (ja) * | 2021-12-15 | 2023-06-27 | 住友ゴム工業株式会社 | タイヤ |
Citations (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0653768B2 (ja) | 1986-12-27 | 1994-07-20 | 住友化学工業株式会社 | 変性ジエン系重合体ゴムの製造方法 |
JPH0657767B2 (ja) | 1987-01-28 | 1994-08-03 | 住友化学工業株式会社 | 変性ゴム組成物 |
JP2003514078A (ja) | 1999-11-12 | 2003-04-15 | 株式会社ブリヂストン | ランタニドを基にした触媒を用いて製造した変性重合体 |
JP2005213508A (ja) * | 2004-01-29 | 2005-08-11 | Goodyear Tire & Rubber Co:The | 官能化スチレン/ブタジエンエラストマー、シリカおよびスチレン/α−メチルスチレン樹脂を含むゴム組成物部材を有するタイヤ |
JP2005314533A (ja) * | 2004-04-28 | 2005-11-10 | Yokohama Rubber Co Ltd:The | タイヤトレッド用ゴム組成物 |
JP2006063285A (ja) * | 2004-08-30 | 2006-03-09 | Toyo Tire & Rubber Co Ltd | タイヤサイドウォール用ゴム組成物および空気入りタイヤ |
JP2007262206A (ja) * | 2006-03-28 | 2007-10-11 | Bridgestone Corp | タイヤトレッド用ゴム組成物及びそれを用いた空気入りタイヤ |
WO2008044722A1 (fr) * | 2006-10-11 | 2008-04-17 | Zeon Corporation | Composition de caoutchouc étendue à l'huile, son procédé de fabrication, élément de pneu et pneu |
WO2009072650A1 (ja) * | 2007-12-07 | 2009-06-11 | Bridgestone Corporation | タイヤ |
JP2009263587A (ja) * | 2008-04-28 | 2009-11-12 | Bridgestone Corp | タイヤ |
JP2010111753A (ja) | 2008-11-05 | 2010-05-20 | Sumitomo Rubber Ind Ltd | ゴム組成物及びタイヤ |
WO2010104149A1 (ja) * | 2009-03-11 | 2010-09-16 | Jsr株式会社 | ゴム組成物及び空気入りタイヤ |
JP2010209255A (ja) * | 2009-03-11 | 2010-09-24 | Jsr Corp | ゴム組成物及び空気入りタイヤ |
JP2010241982A (ja) * | 2009-04-07 | 2010-10-28 | Bridgestone Corp | タイヤ |
JP2011116823A (ja) * | 2009-12-01 | 2011-06-16 | Sumitomo Rubber Ind Ltd | サイドウォール用ゴム組成物及び空気入りタイヤ |
JP2011122062A (ja) * | 2009-12-10 | 2011-06-23 | Sumitomo Rubber Ind Ltd | トレッド用ゴム組成物及びそれを用いたスタッドレスタイヤ |
JP2011122024A (ja) * | 2009-12-09 | 2011-06-23 | Sumitomo Rubber Ind Ltd | トレッド用ゴム組成物及び空気入りタイヤ |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3789203T2 (de) | 1986-12-01 | 1994-06-01 | Sumitomo Chemical Co | Verfahren zur Herstellung von modifizierten Kautschuk-Dienpolymeren. |
JP4467258B2 (ja) * | 2003-06-25 | 2010-05-26 | 株式会社ブリヂストン | ブタジエン系重合体及びその製造方法、並びにそれを用いたゴム組成物及びタイヤ |
JP5006532B2 (ja) | 2004-09-08 | 2012-08-22 | 東洋ゴム工業株式会社 | 冬用空気入りタイヤ用ゴム組成物及び冬用空気入りタイヤ |
JP5189253B2 (ja) | 2006-06-07 | 2013-04-24 | 株式会社ブリヂストン | 空気入りタイヤ |
JP2008019334A (ja) * | 2006-07-12 | 2008-01-31 | Yokohama Rubber Co Ltd:The | タイヤトレッド用ゴム組成物 |
JP5214886B2 (ja) * | 2007-01-12 | 2013-06-19 | 東洋ゴム工業株式会社 | 空気入りタイヤ |
JP4354512B2 (ja) | 2007-10-17 | 2009-10-28 | 住友ゴム工業株式会社 | トレッド用ゴム組成物およびそれからなるトレッドを有するタイヤ |
JP2009126987A (ja) * | 2007-11-27 | 2009-06-11 | Toyo Tire & Rubber Co Ltd | タイヤトレッド用ゴム組成物 |
JP4638933B2 (ja) * | 2007-12-07 | 2011-02-23 | 住友ゴム工業株式会社 | タイヤ用ゴム組成物 |
US20100186868A1 (en) | 2009-01-29 | 2010-07-29 | Paul Harry Sandstrom | Pneumatic tire |
JP5457165B2 (ja) | 2009-12-22 | 2014-04-02 | 住友ゴム工業株式会社 | タイヤ用ゴム組成物及び空気入りタイヤ |
JP2011144262A (ja) | 2010-01-14 | 2011-07-28 | Sumitomo Rubber Ind Ltd | トレッド用ゴム組成物及び空気入りタイヤ |
JP5543226B2 (ja) | 2010-01-18 | 2014-07-09 | 住友ゴム工業株式会社 | タイヤ用ゴム組成物及び空気入りタイヤ |
JP5200134B2 (ja) * | 2010-07-16 | 2013-05-15 | 住友ゴム工業株式会社 | トレッド用ゴム組成物及び空気入りタイヤ |
JP2012052028A (ja) | 2010-09-01 | 2012-03-15 | Sumitomo Rubber Ind Ltd | トレッド用ゴム組成物及び空気入りタイヤ |
-
2012
- 2012-04-03 CN CN201280026614.6A patent/CN103562295B/zh not_active Expired - Fee Related
- 2012-04-03 WO PCT/JP2012/059112 patent/WO2012165038A1/ja active Application Filing
- 2012-04-03 EP EP12793999.9A patent/EP2712890B1/en not_active Not-in-force
- 2012-04-03 JP JP2013517914A patent/JP5706963B2/ja active Active
- 2012-04-03 US US14/005,798 patent/US9403971B2/en not_active Expired - Fee Related
- 2012-04-03 BR BR112013030711A patent/BR112013030711A2/pt not_active IP Right Cessation
Patent Citations (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0653768B2 (ja) | 1986-12-27 | 1994-07-20 | 住友化学工業株式会社 | 変性ジエン系重合体ゴムの製造方法 |
JPH0657767B2 (ja) | 1987-01-28 | 1994-08-03 | 住友化学工業株式会社 | 変性ゴム組成物 |
JP2003514078A (ja) | 1999-11-12 | 2003-04-15 | 株式会社ブリヂストン | ランタニドを基にした触媒を用いて製造した変性重合体 |
JP2005213508A (ja) * | 2004-01-29 | 2005-08-11 | Goodyear Tire & Rubber Co:The | 官能化スチレン/ブタジエンエラストマー、シリカおよびスチレン/α−メチルスチレン樹脂を含むゴム組成物部材を有するタイヤ |
JP2005314533A (ja) * | 2004-04-28 | 2005-11-10 | Yokohama Rubber Co Ltd:The | タイヤトレッド用ゴム組成物 |
JP2006063285A (ja) * | 2004-08-30 | 2006-03-09 | Toyo Tire & Rubber Co Ltd | タイヤサイドウォール用ゴム組成物および空気入りタイヤ |
JP2007262206A (ja) * | 2006-03-28 | 2007-10-11 | Bridgestone Corp | タイヤトレッド用ゴム組成物及びそれを用いた空気入りタイヤ |
WO2008044722A1 (fr) * | 2006-10-11 | 2008-04-17 | Zeon Corporation | Composition de caoutchouc étendue à l'huile, son procédé de fabrication, élément de pneu et pneu |
WO2009072650A1 (ja) * | 2007-12-07 | 2009-06-11 | Bridgestone Corporation | タイヤ |
JP2009263587A (ja) * | 2008-04-28 | 2009-11-12 | Bridgestone Corp | タイヤ |
JP2010111753A (ja) | 2008-11-05 | 2010-05-20 | Sumitomo Rubber Ind Ltd | ゴム組成物及びタイヤ |
WO2010104149A1 (ja) * | 2009-03-11 | 2010-09-16 | Jsr株式会社 | ゴム組成物及び空気入りタイヤ |
JP2010209255A (ja) * | 2009-03-11 | 2010-09-24 | Jsr Corp | ゴム組成物及び空気入りタイヤ |
JP2010241982A (ja) * | 2009-04-07 | 2010-10-28 | Bridgestone Corp | タイヤ |
JP2011116823A (ja) * | 2009-12-01 | 2011-06-16 | Sumitomo Rubber Ind Ltd | サイドウォール用ゴム組成物及び空気入りタイヤ |
JP2011122024A (ja) * | 2009-12-09 | 2011-06-23 | Sumitomo Rubber Ind Ltd | トレッド用ゴム組成物及び空気入りタイヤ |
JP2011122062A (ja) * | 2009-12-10 | 2011-06-23 | Sumitomo Rubber Ind Ltd | トレッド用ゴム組成物及びそれを用いたスタッドレスタイヤ |
Non-Patent Citations (1)
Title |
---|
See also references of EP2712890A4 |
Cited By (39)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2014125546A (ja) * | 2012-12-26 | 2014-07-07 | Sumitomo Rubber Ind Ltd | トレッド用ゴム組成物及び空気入りタイヤ |
CN104072816A (zh) * | 2013-03-28 | 2014-10-01 | 住友橡胶工业株式会社 | 胎面基部用橡胶组合物 |
EP2784115A1 (en) * | 2013-03-28 | 2014-10-01 | Sumitomo Rubber Industries, Ltd. | Rubber composition for base tread |
US10202503B2 (en) | 2013-03-28 | 2019-02-12 | Sumitomo Rubber Industries, Ltd. | Rubber composition for base tread |
WO2014157145A1 (ja) * | 2013-03-29 | 2014-10-02 | 株式会社クラレ | ゴム組成物、加硫ゴム及びタイヤ |
US10227481B2 (en) | 2013-03-29 | 2019-03-12 | Kuraray Co., Ltd. | Rubber composition, vulcanized rubber, and tire |
JPWO2014157145A1 (ja) * | 2013-03-29 | 2017-02-16 | 株式会社クラレ | ゴム組成物、加硫ゴム及びタイヤ |
JP2014201637A (ja) * | 2013-04-03 | 2014-10-27 | 住友ゴム工業株式会社 | タイヤ用ゴム組成物及び空気入りタイヤ |
DE112014002243B4 (de) | 2013-05-02 | 2021-10-14 | The Yokohama Rubber Co., Ltd. | Reifenkautschukzusammensetzung, vulkanisiertes Produkt und Verwendung des vulkanisierten Produkts in einem Luftreifen |
US10626253B2 (en) | 2013-05-02 | 2020-04-21 | The Yokohama Rubber Co., Ltd. | Tire rubber composition |
EP3012290A4 (en) * | 2013-07-05 | 2017-02-08 | Sumitomo Rubber Industries, Ltd. | Tire rubber composition and pneumatic tire |
CN105492523A (zh) * | 2013-09-17 | 2016-04-13 | 住友橡胶工业株式会社 | 充气轮胎 |
CN105492523B (zh) * | 2013-09-17 | 2018-07-06 | 住友橡胶工业株式会社 | 充气轮胎 |
US10046600B2 (en) | 2013-09-17 | 2018-08-14 | Sumitomo Rubber Industries, Ltd. | Pneumatic tire |
WO2015040991A1 (ja) * | 2013-09-17 | 2015-03-26 | 住友ゴム工業株式会社 | 空気入りタイヤ |
JP2015059140A (ja) * | 2013-09-17 | 2015-03-30 | 住友ゴム工業株式会社 | 空気入りタイヤ |
US10137733B2 (en) | 2013-11-20 | 2018-11-27 | Sumitomo Rubber Industries, Ltd. | Pneumatic tire |
JP2015232114A (ja) * | 2014-05-15 | 2015-12-24 | 住友ゴム工業株式会社 | ゴム組成物及び空気入りタイヤ |
JP2016044201A (ja) * | 2014-08-20 | 2016-04-04 | 住友ゴム工業株式会社 | タイヤ用ゴム組成物及び空気入りタイヤ |
JP2016089046A (ja) * | 2014-11-05 | 2016-05-23 | 横浜ゴム株式会社 | コンベアベルト用ゴム組成物、及びこれを用いるコンベアベルト |
WO2016072134A1 (ja) * | 2014-11-05 | 2016-05-12 | 横浜ゴム株式会社 | コンベアベルト用ゴム組成物、及びこれを用いるコンベアベルト |
JP2017101176A (ja) * | 2015-12-03 | 2017-06-08 | 住友ゴム工業株式会社 | タイヤ用ゴム組成物の製造方法 |
JPWO2018147312A1 (ja) * | 2017-02-08 | 2019-11-07 | 日本エラストマー株式会社 | 共役ジエン系重合体、共役ジエン系重合体組成物、及びタイヤ |
US11248064B2 (en) | 2017-02-08 | 2022-02-15 | Japan Elastomer Co., Ltd. | Conjugated diene polymer, conjugated diene polymer composition, and tire |
JP2019085445A (ja) * | 2017-11-01 | 2019-06-06 | 住友ゴム工業株式会社 | ゴム組成物 |
JP2019104771A (ja) * | 2017-12-08 | 2019-06-27 | 住友ゴム工業株式会社 | タイヤ用ゴム組成物および空気入りタイヤ |
JP2019104772A (ja) * | 2017-12-08 | 2019-06-27 | 住友ゴム工業株式会社 | タイヤ用ゴム組成物および空気入りタイヤ |
CN111491999A (zh) * | 2017-12-19 | 2020-08-04 | 米其林集团总公司 | 交联体系基于有机过氧化物的轮胎胎面 |
CN111491999B (zh) * | 2017-12-19 | 2022-07-22 | 米其林集团总公司 | 交联体系基于有机过氧化物的轮胎胎面 |
CN110358162A (zh) * | 2018-04-09 | 2019-10-22 | 住友橡胶工业株式会社 | 轮胎用橡胶组合物和轮胎 |
CN110358162B (zh) * | 2018-04-09 | 2022-05-31 | 住友橡胶工业株式会社 | 轮胎用橡胶组合物和轮胎 |
JP2020006871A (ja) * | 2018-07-11 | 2020-01-16 | 住友ゴム工業株式会社 | 空気入りタイヤ |
JP2022511924A (ja) * | 2019-09-03 | 2022-02-01 | エルジー・ケム・リミテッド | ゴム組成物およびそれから製造された成形品 |
JP7322147B2 (ja) | 2019-09-03 | 2023-08-07 | エルジー・ケム・リミテッド | ゴム組成物およびそれから製造された成形品 |
US12168710B2 (en) | 2019-09-03 | 2024-12-17 | Lg Chem, Ltd. | Rubber composition and molded article manufactured therefrom |
JP2022024962A (ja) * | 2020-07-28 | 2022-02-09 | 住友ゴム工業株式会社 | 空気入りタイヤ |
JP7638473B2 (ja) | 2020-07-28 | 2025-03-04 | 住友ゴム工業株式会社 | 空気入りタイヤ |
JP2022163941A (ja) * | 2021-04-15 | 2022-10-27 | 住友ゴム工業株式会社 | タイヤ |
WO2024010009A1 (ja) * | 2022-07-04 | 2024-01-11 | 株式会社ブリヂストン | ポリマー組成物及びその製造方法、並びに、ゴム組成物及びタイヤ |
Also Published As
Publication number | Publication date |
---|---|
EP2712890A1 (en) | 2014-04-02 |
US9403971B2 (en) | 2016-08-02 |
CN103562295B (zh) | 2016-09-28 |
JP5706963B2 (ja) | 2015-04-22 |
BR112013030711A2 (pt) | 2016-12-06 |
CN103562295A (zh) | 2014-02-05 |
EP2712890B1 (en) | 2016-06-29 |
US20140011944A1 (en) | 2014-01-09 |
EP2712890A4 (en) | 2015-04-01 |
JPWO2012165038A1 (ja) | 2015-02-23 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP5706963B2 (ja) | トレッド用ゴム組成物及び空気入りタイヤ | |
JP6352748B2 (ja) | タイヤ | |
EP3064543B1 (en) | Winter tire | |
JP5394878B2 (ja) | ゴム組成物及びタイヤ | |
JP5576438B2 (ja) | ゴム組成物及び空気入りタイヤ | |
JP5563284B2 (ja) | トレッド用ゴム組成物及びそれを用いたスタッドレスタイヤ | |
WO2013080664A1 (ja) | 空気入りタイヤの製造方法および空気入りタイヤ | |
WO2013008798A1 (ja) | サイドウォール用ゴム組成物及び空気入りタイヤ | |
JP5480781B2 (ja) | ベーストレッド用ゴム組成物及び空気入りタイヤ | |
JP5662231B2 (ja) | タイヤ用ゴム組成物及び空気入りタイヤ | |
JP2010116556A (ja) | ゴム組成物およびそれを用いたタイヤ | |
JP7111270B2 (ja) | 空気入りタイヤ | |
JP6267419B2 (ja) | タイヤ用ゴム組成物及び空気入りタイヤ | |
JP6208422B2 (ja) | タイヤ用ゴム組成物及び空気入りタイヤ | |
JP3949437B2 (ja) | 変性ジエン系重合体、ゴム組成物及び空気入りタイヤ | |
JP6068020B2 (ja) | ゴム組成物の製造方法 | |
JP7587342B2 (ja) | トレッド用ゴム組成物およびタイヤ | |
WO2012063797A1 (ja) | タイヤ用ゴム組成物及び空気入りタイヤ | |
JP7403207B2 (ja) | タイヤ用ゴム組成物及びタイヤ | |
JP6736955B2 (ja) | タイヤ | |
JP2011140546A (ja) | チェーファー用ゴム組成物、サイドウォール用ゴム組成物及び重荷重用タイヤ | |
JP7103458B2 (ja) | タイヤ用ゴム組成物及びタイヤ | |
WO2013002234A1 (ja) | タイヤ用ゴム組成物及び空気入りタイヤ | |
EP4147882A1 (en) | Tire | |
JP7338209B2 (ja) | タイヤトレッド用ゴム組成物及びタイヤ |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 12793999 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 2013517914 Country of ref document: JP Kind code of ref document: A |
|
WWE | Wipo information: entry into national phase |
Ref document number: 14005798 Country of ref document: US |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2012793999 Country of ref document: EP |
|
REG | Reference to national code |
Ref country code: BR Ref legal event code: B01A Ref document number: 112013030711 Country of ref document: BR |
|
ENP | Entry into the national phase |
Ref document number: 112013030711 Country of ref document: BR Kind code of ref document: A2 Effective date: 20131128 |