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Title:
RUBBER COMPOSITION AND PNEUMATIC TIRE
Document Type and Number:
WIPO Patent Application WO/2013/008730
Kind Code:
A1
Abstract:
Provided are: a rubber composition that, in a balanced manner, can increase wet grip performance and fuel economy; and a pneumatic tire that uses the rubber composition in the members (particularly the tread) of a tire. The rubber composition contains: a rubber component containing a copolymer that is obtained by the copolymerization of 1,3-butadiene, styrene, and the compound represented by formula (I), has an amino group at one terminus, has a functional group containing at least one atom selected from the group consisting of nitrogen, oxygen, and silicon at the other terminus, and has a weight average molecular weight of 1.0×105 - 2.5×106; silica; and a silane coupling agent having a mercapto group. In the formula, R1 represents a hydrocarbon group having 1-10 carbon atoms.

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Inventors:
KOJIMA RYOJI (JP)
UESAKA KENICHI (JP)
IWAMOTO MASAKO (JP)
Application Number:
PCT/JP2012/067281
Publication Date:
January 17, 2013
Filing Date:
July 06, 2012
Export Citation:
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Assignee:
SUMITOMO RUBBER IND (JP)
KOJIMA RYOJI (JP)
UESAKA KENICHI (JP)
IWAMOTO MASAKO (JP)
International Classes:
C08L15/00; B60C1/00; C08C19/25; C08F236/06; C08K3/36; C08K5/548
Foreign References:
JP2006257260A2006-09-28
JP2010260920A2010-11-18
JP2011126927A2011-06-30
JP2011126930A2011-06-30
Attorney, Agent or Firm:
YASUTOMI & Associates (JP)
Patent business corporation Yasutomi international patent firm (JP)
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