PROBLEM TO BE SOLVED: To provide: a rubber composition for a tread of a passenger car summer tire, allowing for production of a passenger car summer tire having excellent rolling resistance performance and wet grip performance; a tire tread using the rubber composition partly; and a passenger car pneumatic summer tire.SOLUTION: The rubber composition for a tread of a passenger car summer tire is provided that contains a farnesene polymer (B) having a weight average molecular weight of 10,000 to 500,000 by 0.1 to 50 pts.mass and a filler (C) by 20 to 150 pts.mass per 100 pts.mass of at least one rubber component (A) selected from among synthetic rubber and natural rubber, and that has a tan δ peak temperature after vulcanization of -40°C or more.SELECTED DRAWING: None
【課題】転がり抵抗性能及びウェットグリップ性能に優れる乗用車用サマータイヤを製造することができる乗用車用サマータイヤのトレッド用ゴム組成物、これを一部に用いたタイヤトレッド、及び乗用車用空気入りサマータイヤを提供する。【解決手段】合成ゴム及び天然ゴムから選ばれる少なくとも1種のゴム成分(A)100質量部に対し、重量平均分子量が10,000〜500,000であるファルネセン重合体(B)を0.1〜50質量部、フィラー(C)を20〜150質量部含有し、加硫後のtanδピーク温度が−40℃以上である、乗用車用サマータイヤのトレッド用ゴム組成物。【選択図】なし
RUBBER COMPOSITION FOR TREAD OF PASSENGER CAR SUMMER TIRE
乗用車用サマータイヤのトレッド用ゴム組成物
2018-08-23
Patent
Elektronische Ressource
Japanisch
IPC: | C08L COMPOSITIONS OF MACROMOLECULAR COMPOUNDS , Massen auf Basis makromolekularer Verbindungen / B60C VEHICLE TYRES , Fahrzeugreifen / C08K Verwendung von anorganischen oder nichtmakromolekularen organischen Stoffen als Zusatzstoffe , USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES AS COMPOUNDING INGREDIENTS |
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