Title:
RUBBER COMPOSITION AND PNEUMATIC TIRE
Document Type and Number:
WIPO Patent Application WO/2012/144575
Kind Code:
A1
Abstract:
The present invention provides: a rubber composition which is capable of improving fuel consumption saving, wet grip performance and wear resistance in a balanced manner; and a pneumatic tire which uses the rubber composition.
The present invention relates to a rubber composition which contains a rubber component, silica and a diene rubber gel having a hydroxyl group and a glass transition temperature from -40˚C to -10˚C. In the rubber composition, 5% by mass or more of a conjugated diene polymer, which has a constituent unit derived from a conjugated diene and a constituent unit represented by formula (I) and at least one end of which is modified with a specific compound, is contained in 100% by mass of the rubber component. The silica is contained in an amount of 5-150 parts by mass and the diene rubber gel is contained in an amount of 10-30 parts by mass, respectively per 100 parts by mass of the rubber component.
Inventors:
WATANABE KENYA (JP)
UESAKA KENICHI (JP)
OKABE NOBORU (JP)
KUNISAWA TETSUYA (JP)
UESAKA KENICHI (JP)
OKABE NOBORU (JP)
KUNISAWA TETSUYA (JP)
Application Number:
PCT/JP2012/060653
Publication Date:
October 26, 2012
Filing Date:
April 20, 2012
Export Citation:
Assignee:
SUMITOMO RUBBER IND (JP)
WATANABE KENYA (JP)
UESAKA KENICHI (JP)
OKABE NOBORU (JP)
KUNISAWA TETSUYA (JP)
WATANABE KENYA (JP)
UESAKA KENICHI (JP)
OKABE NOBORU (JP)
KUNISAWA TETSUYA (JP)
International Classes:
C08L15/00; B60C1/00; C08F8/30; C08K3/36
Foreign References:
| JP2010077412A | 2010-04-08 | |||
| JP2010270292A | 2010-12-02 | |||
| JP2010077413A | 2010-04-08 | |||
| JP2010077415A | 2010-04-08 | |||
| JP2010077414A | 2010-04-08 | |||
| JP2011046875A | 2011-03-10 |
Attorney, Agent or Firm:
YASUTOMI & Associates (JP)
Patent business corporation Yasutomi international patent firm (JP)
Patent business corporation Yasutomi international patent firm (JP)
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Claims: