To provide a rubber composition for tires capable of improving wet grip properties and grip sustainability of a tire in a well-balanced manner.SOLUTION: The rubber composition for tires according to the present invention contains a diene rubber, silica, and a silane compound represented by the following formula (1). The diene rubber contains an aromatic vinyl-conjugated diene copolymer rubber. The average glass transition temperature of the diene rubber is -35°C or higher and -5°C or lower. The content of the silica is 200 pts.mass or more and 300 pts.mass or less based on 100 pts.mass of the diene rubber. The content of the silane compound is 0.5 pt.mass or more and 30 pts.mass or less based on 100 pts.mass of the silica.SELECTED DRAWING: Figure 1
【課題】タイヤのウエットグリップ性およびグリップ持続性をバランス良く向上できるタイヤ用ゴム組成物の提供。【解決手段】本発明のタイヤ用ゴム組成物は、ジエン系ゴムと、シリカと、下記式(1)で表されるシラン化合物とを含む、タイヤ用ゴム組成物であって、前記ジエン系ゴムが、芳香族ビニル−共役ジエン共重合体ゴムを含み、前記ジエン系ゴムの平均ガラス転移温度が、−35℃以上−5℃以下であり、前記シリカの含有量が、前記ジエン系ゴム100質量部に対して、200質量部以上300質量部以下であり、前記シラン化合物の含有量が、前記シリカ100質量部に対して、0.5質量部以上30質量部以下である。【選択図】図1
RUBBER COMPOSITION FOR TIRES, AND PNEUMATIC TIRE
タイヤ用ゴム組成物および空気入りタイヤ
2021-04-08
Patent
Electronic Resource
Japanese
IPC: | C08L COMPOSITIONS OF MACROMOLECULAR COMPOUNDS , Massen auf Basis makromolekularer Verbindungen / B60C VEHICLE TYRES , Fahrzeugreifen / C07F Acyclische, carbocyclische oder heterocyclische Verbindungen, die andere Elemente als Kohlenstoff, Wasserstoff, Halogen, Sauerstoff, Stickstoff, Schwefel, Selen oder Tellur enthalten , ACYCLIC, CARBOCYCLIC, OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM / C08K Verwendung von anorganischen oder nichtmakromolekularen organischen Stoffen als Zusatzstoffe , USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES AS COMPOUNDING INGREDIENTS |
Rubber composition, rubber composition for tires, and pneumatic tire
European Patent Office | 2018
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