Title:
RUBBER COMPOSITION FOR TIRE TREAD AND METHOD FOR PRODUCING THE SAME
Document Type and Number:
Japanese Patent JP2009179658
Kind Code:
A
Abstract:
To provide a rubber composition for tire tread which improves rubber reinforcing performance, while improving low rolling property by calcium carbonate, and to provide a method for producing the same.
A master batch is prepared by adding, to 100 pts.wt. of diene rubber, 7-35 pts.wt. of calcium carbonate, 0.1-1.2 pts.wt. of a specific zinc dithiophosphate, and a compounding agent except a vulcanization compounding agent and carrying out a first mixing operation, the vulcanization compounding agent is added to the master batch, and a second mixing operation is carried out.
Inventors:
TAKEUCHI MASAKAZU
Application Number:
JP2008017824A
Publication Date:
August 13, 2009
Filing Date:
January 29, 2008
Export Citation:
Assignee:
YOKOHAMA RUBBER CO LTD
International Classes:
C08L9/00; C08J3/22; C08K3/26; C08K5/5398
Attorney, Agent or Firm:
Shinichi Ogawa
Takashi Noguchi
Kazuhiko Saishita
Takashi Noguchi
Kazuhiko Saishita