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Title:
CONJUGATED DIENE RUBBER, RUBBER COMPOSITION, CROSSLINKED RUBBER, TIRE, AND PROCESS FOR PRODUCTION OF CONJUGATED DIENE RUBBER
Document Type and Number:
WIPO Patent Application WO/2011/105362
Kind Code:
A1
Abstract:
Disclosed are: a tire which exhibits excellent strength, low heat build-up, excellent wet grip performance, and excellent steering stability; a rubber composition suitable for use in producing the tire; and a conjugated diene rubber. The conjugated diene rubber contains at least 5wt% of a structure that is formed by reacting conjugated diene polymer chains with a modifying agent and that comprises three or more conjugated diene polymer chains which are bonded to each another with the modifying agent thereamong. The conjugated diene polymer chains are each a conjugated diene polymer chain in which at least one end moiety is an isoprene block having an isoprene monomer unit content of 70wt% or more and the other end moiety has an active end, while the modifying agent is a compound which contains one or more epoxy and/or hydrocarbyloxysilyl groups in one molecule and in which the sum of the number of epoxy groups contained in one molecule and the number of hydrocarbyloxy groups (which constitute hydrocarbyloxysilyl groups) contained in one molecule is 3 or more.

Inventors:
SASAJIMA TATSUO
KARATO TAKESHI
SUGIMURA TAKESHI
Application Number:
PCT/JP2011/053824
Publication Date:
September 01, 2011
Filing Date:
February 22, 2011
Export Citation:
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Assignee:
ZEON CORP (JP)
SASAJIMA TATSUO
KARATO TAKESHI
SUGIMURA TAKESHI
International Classes:
C08C19/00; B60C1/00; C08F297/02; C08K3/36; C08L15/00
Domestic Patent References:
WO2010131646A12010-11-18
WO2003102053A12003-12-11
Foreign References:
JP2011079913A2011-04-21
JP2009091498A2009-04-30
JP2004231905A2004-08-19
JP2002284814A2002-10-03
JP2003171418A2003-06-20
JPH09110904A1997-04-28
JP2003531257A2003-10-21
Other References:
See also references of EP 2540747A4
Attorney, Agent or Firm:
HARAKENZO WORLD PATENT & TRADEMARK (JP)
Patent business corporation Hara [Kenzo] international patent firm (JP)
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