Title:
RUBBER COMPOSITION FOR TIRES AND PNEUMATIC TIRE
Document Type and Number:
WIPO Patent Application WO/2012/144541
Kind Code:
A1
Abstract:
Provided are: a rubber composition for tires, which is capable of improving fuel consumption saving, wet grip performance, dry grip performance, wear resistance and processability; and a pneumatic tire which uses the rubber composition for tires. The present invention relates to a rubber composition for tires, which contains a diene polymer and silica. The diene polymer is a modified diene polymer that is obtained by reacting the substance (A) and the substance (B) described below. When a particle of silica having three or more particles adjacent thereto is considered as a branch particle (X), the silica has an average length (L1) between branch particles X-X including the branch particles Xs of 30-400 nm. (A) an active conjugated diene polymer having an alkali metal end, said active conjugated diene polymer being obtained by polymerizing a conjugated diene monomer or a conjugated diene monomer and an aromatic vinyl monomer in the presence of the substance (C) described below (B) a modifying agent having a functional group (C) a chemical species which is obtained by reacting a compound represented by formula (1) with an organic alkali metal compound
Inventors:
YAMAUCHI SATOMI (JP)
Application Number:
PCT/JP2012/060531
Publication Date:
October 26, 2012
Filing Date:
April 19, 2012
Export Citation:
Assignee:
SUMITOMO RUBBER IND (JP)
YAMAUCHI SATOMI (JP)
YAMAUCHI SATOMI (JP)
International Classes:
C08L15/00; B60C1/00; C08K3/36
Domestic Patent References:
| WO2012057308A1 | 2012-05-03 |
Foreign References:
| JP2006306962A | 2006-11-09 | |||
| JP2007154158A | 2007-06-21 | |||
| JP2011231303A | 2011-11-17 |
Attorney, Agent or Firm:
YASUTOMI & Associates (JP)
Patent business corporation Yasutomi international patent firm (JP)
Patent business corporation Yasutomi international patent firm (JP)
Download PDF:
Claims: