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1. WO2019221180 - RUBBER COMPOSITION FOR TIRE TREAD AND PNEUMATIC TIRE

Publication Number WO/2019/221180
Publication Date 21.11.2019
International Application No. PCT/JP2019/019335
International Filing Date 15.05.2019
IPC
C08L 15/00 2006.1
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
15Compositions of rubber derivatives
B60C 1/00 2006.1
BPERFORMING OPERATIONS; TRANSPORTING
60VEHICLES IN GENERAL
CVEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
1Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition
C08C 19/42 2006.1
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
CTREATMENT OR CHEMICAL MODIFICATION OF RUBBERS
19Chemical modification of rubber
30Addition of a reagent which reacts with a hetero atom or a group containing hetero atoms of the macromolecule
42reacting with metals or metal-containing groups
C08F 236/10 2006.1
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
236Copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds
02the radical having only two carbon-to-carbon double bonds
04conjugated
10with vinyl aromatic monomers
C08F 297/04 2006.1
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
297Macromolecular compounds obtained by successively polymerising different monomer systems using a catalyst of the ionic or coordination type without deactivating the intermediate polymer
02using a catalyst of the anionic type
04polymerising vinyl aromatic monomers and conjugated dienes
C08K 3/36 2006.1
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
KUSE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES AS COMPOUNDING INGREDIENTS
3Use of inorganic substances as compounding ingredients
34Silicon-containing compounds
36Silica
CPC
B60C 1/0016
BPERFORMING OPERATIONS; TRANSPORTING
60VEHICLES IN GENERAL
CVEHICLE TYRES TYRE INFLATION; TYRE CHANGING OR REPAIRING; REPAIRING, OR CONNECTING VALVES TO, INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
1Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition
0016Compositions of the tread
C08C 19/42
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
CTREATMENT OR CHEMICAL MODIFICATION OF RUBBERS
19Chemical modification of rubber
30Addition of a reagent which reacts with a hetero atom or a group containing hetero atoms of the macromolecule
42reacting with metals or metal-containing groups
C08F 2/14
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
2Processes of polymerisation
12Polymerisation in non-solvents
14Organic medium
C08F 236/10
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
236Copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds
02the radical having only two carbon-to-carbon double bonds
04conjugated
10with vinyl-aromatic monomers
C08F 297/046
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
297Macromolecular compounds obtained by successively polymerising different monomer systems using a catalyst of the ionic or coordination type without deactivating the intermediate polymer
02using a catalyst of the anionic type
04polymerising vinyl aromatic monomers and conjugated dienes
046polymerising vinyl aromatic monomers and isoprene, optionally with other conjugated dienes
C08F 299/08
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
299Macromolecular compounds obtained by interreacting polymers involving only carbon-to-carbon unsaturated bond reactions, in the absence of non-macromolecular monomers
02from unsaturated polycondensates
08from polysiloxanes
Applicants
  • 横浜ゴム株式会社 THE YOKOHAMA RUBBER CO., LTD. [JP]/[JP]
Inventors
  • 佐藤 正樹 SATO Masaki
  • 餝矢 理起 KAZARIYA Ayaki
  • 佐和 秀彬 SAWA Hideaki
  • 芦浦 誠 ASHIURA Makoto
Agents
  • 伊東 秀明 ITOH Hideaki
  • 三橋 史生 MITSUHASHI Fumio
  • 町田 洋一郎 MACHIDA Yoichiro
  • 武藤 三千代 MUTO Michiyo
Priority Data
2018-09446016.05.2018JP
2018-09489016.05.2018JP
Publication Language Japanese (ja)
Filing Language Japanese (JA)
Designated States
Title
(EN) RUBBER COMPOSITION FOR TIRE TREAD AND PNEUMATIC TIRE
(FR) COMPOSITION DE CAOUTCHOUC POUR BANDE DE ROULEMENT DE PNEU ET PNEUMATIQUE
(JA) タイヤトレッド用ゴム組成物および空気入りタイヤ
Abstract
(EN) Provided are: a rubber composition for tire treads which gives tires excellent in terms of wet performance, rolling performance, and dry driving stability performance; and a pneumatic tire obtained using the rubber composition for tire treads. The rubber composition for tire treads of the present invention comprises conjugated-diene-based rubbers comprising 30 mass% or more specific conjugated-diene-based rubber produced by a method for conjugated-diene-based-rubber production, the method including a specific step, and 20 mass% or more styrene/butadiene rubber, a given amount of silica, and a given amount of a silane coupling agent, wherein the specific conjugated-diene-based rubber has a content of aromatic vinyl monomer units of 20-80 mass%, includes conjugated-diene monomer units, which have a vinyl bond content of 20-80 mass%, and has a glass transition temperature and a weight-average molecular weight that are within given ranges.
(FR) La présente invention concerne une composition de caoutchouc destinée à des bandes de roulement de pneu et qui confère aux pneumatiques d'excellentes performances d'adhérence par temps humide, de roulement et de stabilité par temps sec ; et un pneumatique obtenu à l'aide de la composition de caoutchouc destinée à des bandes de roulement de pneu. La composition de caoutchouc destinée à des bandes de roulement de pneu de la présente invention comprend des caoutchoucs à base de diène conjugué qui comprennent eux-même 30 % en masse ou plus d'un caoutchouc à base de diène conjugué spécifique produit par un procédé de production de caoutchouc à base de diène conjugué, ledit procédé comprenant une étape spécifique, 20 % en masse ou plus d'un caoutchouc styrène/butadiène, une quantité donnée de silice et une quantité donnée d'un agent de couplage au silane, ledit caoutchouc à base de diène conjugué spécifique ayant une teneur en motifs monomères vinyliques aromatiques à raison de 20 à 80 % en masse, comprenant des motifs monomères de diène conjugué dont la teneur en liaisons vinyliques est de 20 à 80 % en masse et ayant une température de transition vitreuse et une masse moléculaire moyenne en poids comprises dans des plages prédéfinies.
(JA) タイヤにしたときのウェット性能、タイヤにしたときの転がり性能、および、タイヤにしたときのドライ操縦安定性能に優れるタイヤトレッド用ゴム組成物、ならびに、上記タイヤトレッド用ゴム組成物を用いた空気入りタイヤを提供する。本発明のタイヤトレッド用ゴム組成物は、特定の工程を備える共役ジエン系ゴムの製造方法により製造される特定共役ジエン系ゴムを30質量%以上と、スチレンブタジエンゴムを20質量%以上と、を含む共役ジエン系ゴムと、所定量のシリカと、所定量のシランカップリング剤とを含有し、特定共役ジエン系ゴム中の芳香族ビニル単量体単位の含有量が20~80質量%であり、特定共役ジエン系ゴムにおける共役ジエン単量体単位中のビニル結合含有量が20~80質量%であり、特定共役ジエン系ゴムのガラス転移温度および重量平均分子量が所定範囲内にある。
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