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1. WO2016148296 - RUBBER COMPOSITION FOR TIRE TREADS, AND PNEUMATIC TIRE

Publication Number WO/2016/148296
Publication Date 22.09.2016
International Application No. PCT/JP2016/058829
International Filing Date 18.03.2016
IPC
C08L 15/00 2006.01
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 2006.01
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 19/22 2006.01
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
CTREATMENT OR CHEMICAL MODIFICATION OF RUBBERS
19Chemical modification of rubber
22Incorporating nitrogen atoms into the molecule
C08K 3/36 2006.01
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
C08K 5/378 2006.01
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
5Use of organic ingredients
36Sulfur-, selenium-, or tellurium-containing compounds
372Sulfides
378containing heterocyclic rings
CPC
B60C 1/0016
BPERFORMING OPERATIONS; TRANSPORTING
60VEHICLES IN GENERAL
CVEHICLE TYRES
1Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition
0016Compositions of the tread
C08C 19/22
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
CTREATMENT OR CHEMICAL MODIFICATION OF RUBBERS
19Chemical modification of rubber
22Incorporating nitrogen atoms into the molecule
C08K 3/36
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
C08K 5/378
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
5Use of organic ingredients
36Sulfur-, selenium-, or tellurium-containing compounds
37Thiols
378containing heterocyclic rings
C08L 15/00
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
15Compositions of rubber derivatives
C08L 2205/025
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
2205Polymer mixtures characterised by other features
02containing two or more polymers of the same C08L -group
025containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
Applicants
  • 横浜ゴム株式会社 THE YOKOHAMA RUBBER CO., LTD. [JP]/[JP]
Inventors
  • 加藤 学 KATO Manabu
  • 高橋 亮太 TAKAHASHI Ryota
  • 岡松 隆裕 OKAMATSU Takahiro
  • 桐野 美昭 KIRINO Yoshiaki
Agents
  • 渡辺 望稔 WATANABE Mochitoshi
Priority Data
2015-05662119.03.2015JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) RUBBER COMPOSITION FOR TIRE TREADS, AND PNEUMATIC TIRE
(FR) COMPOSITION DE CAOUTCHOUC POUR BANDE DE ROULEMENT, 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)
The present invention addresses the problem of providing: a rubber composition for tire treads which, when used to make a tire, exhibits excellent steering stability when travelling at high speed, excellent property stability when travelling for long periods of time, excellent wet-grip properties, and excellent fuel consumption performance; and a pneumatic tire obtained using said rubber composition. This rubber composition for tire treads includes: an inorganic filler including silica; and a diene rubber including a carboxyl-modified polymer. The inorganic filler content is 70-170 parts by mass per 100 parts by mass of the diene rubber. The silica content is 70-160 parts by mass per 100 parts by mass of the diene rubber. The carboxyl-modified polymer is obtained by using a nitrone compound (B) having carboxyl groups to modify a styrene-butadiene rubber (A). The content of the carboxyl-modified polymer in the diene rubber is 10-100 mass%. The content of styrene units in the styrene-butadiene rubber (A) is at least 36 mass%. The modification ratio of the carboxyl-modified polymer is 0.02-4.0 mol%.
(FR)
L’invention a pour objet de fournir une composition de caoutchouc pour bande de roulement qui lorsqu’elle est transformée en pneumatique, se révèle excellente en termes de stabilité de conduite lors d’une progression à grande vitesse et de stabilité de propriétés lors d’une progression pendant une longue durée, et qui se révèle également excellente en termes d’adhérence sur sol mouillé et de rendement de carburant. L’invention a en outre pour objet de fournir un pneumatique obtenu à l’aide de cette composition. La composition de caoutchouc pour bande de roulement de l’invention comprend une charge inorganique contenant une silice, et un caoutchouc diénique contenant un polymère modifié par carboxy. La teneur en charge inorganique est comprise entre 70 et 170 parties en masse pour 100 parties en masse dudit caoutchouc diénique. La teneur en silice est comprise entre 70 et 160 parties en masse pour 100 parties en masse dudit caoutchouc diénique. Ledit polymère modifié par carboxy est obtenu par modification d’un caoutchouc de styrène-butadiène (A) au moyen d’un composé nitrone (B) possédant un groupe carboxy, et la teneur en polymère modifié par carboxy dans ledit caoutchouc diénique, est comprise entre 10 et 100 parties en masse. La teneur en unité styrène dans ledit caoutchouc de styrène-butadiène (A), est supérieure ou égale à 36% en masse. Le taux de modification dudit polymère modifié par carboxy, est compris entre 0,02 et 4,0% en moles.
(JA)
 本発明の課題は、タイヤにしたときに、高速走行時の操縦安定性および長時間走行時の性状安定性に優れ、かつ、ウェットグリップ性および燃費性能に優れたタイヤトレッド用ゴム組成物、およびこれを用いて得られる空気入りタイヤを提供することである。本発明のタイヤトレッド用ゴム組成物は、シリカを含む無機充填剤と、カルボキシ変性ポリマーを含むジエン系ゴムと、を含有する。上記無機充填剤の含有量は、上記ジエン系ゴム100質量部に対して、70~170質量部である。上記シリカの含有量は、上記ジエン系ゴム100質量部に対して70~160質量部である。上記カルボキシ変性ポリマーが、スチレン-ブタジエンゴム(A)をカルボキシ基を有するニトロン化合物(B)によって変性することで得られ、上記ジエン系ゴム中の上記カルボキシ変性ポリマーの含有量が10~100質量%である。上記スチレン-ブタジエンゴム(A)中のスチレン単位の含有量は、36質量%以上である。上記カルボキシ変性ポリマーの変性率は、0.02~4.0mol%である。
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