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Title:
TREAD RUBBER COMPOSITION AND MANUFACTURING METHOD THEREFOR
Document Type and Number:
Japanese Patent JP2002121327
Kind Code:
A
Abstract:

To provide a silica-containing rubber composition having at a once excellent wetting ability and rolling resistance, and having improved kneading processability.

This rubber composition for use in treads comprises 100 pts.wt. of a diene rubber, 30-90 pts.wt. of silica as a filler, a silane coupling agent, 2-20 pts.wt. of a polyethylene glycol, sulfur and a vulcanization accelerator. The manufacturing method comprises step 1: kneading the diene rubber, the silica and the silane coupling agent at 130-140°C, step 2: adding the polyethylene glycol at 150-170°C for further kneading, and step 3: adding the sulfur and vulcanization accelerator for further kneading.


Inventors:
TSUMORI ISAMU
Application Number:
JP2000000315005
Publication Date:
April 23, 2002
Filing Date:
October 16, 2000
Export Citation:
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Assignee:
SUMITOMO RUBBER IND
International Classes:
B60C1/00; B29B7/02; C08J3/20; C08K3/06; C08K3/36; C08K5/54; C08K5/541; C08L9/00; (IPC1-7): C08L9/00; B29B7/02; B60C1/00; C08J3/20; C08K3/06; C08K3/36; C08K5/541
Domestic Patent References:
JPH093245A1997-01-07
JPH11286575A1999-10-19
JPH09151276A1997-06-10
Foreign References:
WO1997039055A11997-10-23
Attorney, Agent or Firm:
Sota Asahina (1 person outside)