Title:
タイヤトレッド用ゴム組成物
Document Type and Number:
Japanese Patent JP4472793
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide the rubber compsn. capable of realizing a sufficiently low rolling resistance without losing the wear resistance and the crack resis tance, by blending a rubber component of a blend of a natural rubber and a cis-polybutadiene at a specified ratio, with a high-structure carbon black, a silica, and a silane coupling agent. SOLUTION: A rubber compsn. for tire treads can be obtained by blending 100 pts.wt. of a rubber component consisting of 85-45 wt.% of a natural rubber and 15-55 wt.% of a polybutadiene having a cis content of 96% or more; 15-50 pts.wt. of a carbon black which has a cetyl trimethyl ammonium bromide adsorption specific surface area (CTAB value) of 70-160 m<2> /g, a dibutyl phthalate oil absorption (DBP value) of 115-180 mL/100 g, and a compression dibutyl phthalate oil absorption (24M4 DBP value) of 98-140 mL/100 g; 2-30 pts.wt. of silica; and 3-20 wt.%, based on the silica wt., of a silane coupling agent.
Inventors:
Hirofumi Hayashi
Yuichiro Ozaki
Yuichiro Ozaki
Application Number:
JP85998A
Publication Date:
June 02, 2010
Filing Date:
January 06, 1998
Export Citation:
Assignee:
TOYO TIRE & RUBBER CO.,LTD.
International Classes:
B60C1/00; C08L7/00; B60C11/00; C08K3/04; C08K3/36; C08K5/54; C08K13/02; C08L9/00
Domestic Patent References:
| JP9143311A | ||||
| JP5339430A | ||||
| JP2007106799A | ||||
| JP2005298612A |
Foreign References:
| WO1997048265A2 |
Attorney, Agent or Firm:
Yasushi Oshima
Shuzo Hinode
Seiji Goto
Junko Ohara
Shuzo Hinode
Seiji Goto
Junko Ohara