Title:
TREAD RUBBER COMPOSITION FOR LOW FUEL COST TIRE
Document Type and Number:
Japanese Patent JP3676516
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To obtain the subject composition securing a low fuel cost and a good braking property on wet roads and simultaneously excellent in abrasion resistance.
SOLUTION: This tread rubber composition contains (A) styrene-butadiene copolymer having a styrene content of 25-45wt.%, containing 15-25wt.% of vinyl structures in the whole butadiene chains, coupled in a coupling efficiency of at least 40%, and having a glass transition point (Tg) in a region of -60°C to -40°C and a styrene single chain content of 40-65%, and (B) carbon black having CTAB of 50-70, 24M4DBP≥95, and [DBP-24M4DBP]≥25. The tread rubber composition comprises 80-100 pts.wt. of the component A, 0-20 pts.wt. of natural rubber or one or more other dienic rubbers, and the carbon black in an amount of 40-85 pts.wt. per 100 pts.wt. of the total amount of the raw material rubbers.
Inventors:
Norihiko Nakamura
Koji Hiramatsu
Koji Hiramatsu
Application Number:
JP25784296A
Publication Date:
July 27, 2005
Filing Date:
September 06, 1996
Export Citation:
Assignee:
TOYO TIRE & RUBBER CO.,LTD.
International Classes:
B60C1/00; C08K3/04; C08L9/06; (IPC1-7): C08L9/06; B60C1/00; C08K3/04
Domestic Patent References:
| JP7292162A | ||||
| JP7053784A | ||||
| JP4015268A |
Attorney, Agent or Firm:
Miyazaki Isho
Shinji Nakagawa
Shinji Nakagawa