Title:
RUBBER COMPOSITION FOR TIRES, AND PNEUMATIC TIRE
Document Type and Number:
WIPO Patent Application WO/2016/031769
Kind Code:
A1
Abstract:
The present invention addresses the problem of providing: a rubber composition for tires which, when made into a tire, exhibits excellent wet performance, excellent low rolling resistance, and excellent steering stability; and a pneumatic tire in which said rubber composition for tires is used. This rubber composition for tires includes: a diene-based rubber; silica; a silane coupling agent; a fatty acid metal salt; and a prescribed alkyl trialkoxysilane. The diene-based rubber includes at least 60 mass% of a modified conjugated diene-based rubber, and includes at least 30 mass% of a specific conjugated diene-based rubber corresponding to a portion or all of the modified conjugated diene-based rubber. The average glass transition temperature of the diene-based rubber is -45 to -20˚C. The specific conjugated diene-based rubber is produced using a specific production method, and has an aromatic vinyl unit content, a vinyl bond content, and a weight average molecular weight which are within prescribed ranges.
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Inventors:
IIZUKA YUSUKE (JP)
SUGIMOTO HIROKI (JP)
ASHIURA MAKOTO (JP)
SUGIMOTO HIROKI (JP)
ASHIURA MAKOTO (JP)
Application Number:
PCT/JP2015/073719
Publication Date:
March 03, 2016
Filing Date:
August 24, 2015
Export Citation:
Assignee:
YOKOHAMA RUBBER CO LTD (JP)
International Classes:
C08L15/00; B60C1/00; C08K3/36; C08K5/098; C08K5/5419; C08K5/548
Domestic Patent References:
| WO2014050341A1 | 2014-04-03 | |||
| WO2011158509A1 | 2011-12-22 | |||
| WO2014185495A1 | 2014-11-20 |
Foreign References:
| JP2013213179A | 2013-10-17 | |||
| JP2011246640A | 2011-12-08 | |||
| JP2013075986A | 2013-04-25 | |||
| JP2013001795A | 2013-01-07 |
Other References:
See also references of EP 3196242A4
Attorney, Agent or Firm:
WATANABE Mochitoshi et al. (JP)
Mochitoshi Watanabe (JP)
Mochitoshi Watanabe (JP)
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