Title:
RUBBER COMPOSITION AND PNEUMATIC TIRE USING SAME
Document Type and Number:
WIPO Patent Application WO/2017/195675
Kind Code:
A1
Abstract:
Provided is a rubber composition with lower heat build-up compared to previous levels, while maintaining wear resistance. The rubber composition contains a reinforcing filler and a diene rubber. The diene rubber includes a styrene-butadiene copolymer component comprising at least one styrene-butadiene copolymer, and satisfying the following requirements: (1) bound styrene content is 5-50% by weight, (2) of the components obtained by ozonolysis, among a total of 100 mol.% of decomposition components including 1,2-conjugated butadiene-derived units and/or styrene-derived units, decomposition component V1 which contains one 1,2-conjugated butadiene-derived unit accounts for at least 25 mol.%, (3) of the components obtained by ozonolysis, among a total of 100 mol.% of decomposition components including 1,2-conjugated butadiene-derived units and styrene-derived units, decomposition component S2V1 which includes two styrene-derived units, and one 1,2-conjugated butadiene-derived unit accounts for at least 5 mol.%, and (4) the vinyl content of the butadiene moiety is at least 50%.
Inventors:
SEKINE YUKO (JP)
ASHIURA MAKOTO (JP)
YATSUYANAGI FUMITO (JP)
ASHIURA MAKOTO (JP)
YATSUYANAGI FUMITO (JP)
Application Number:
PCT/JP2017/017051
Publication Date:
November 16, 2017
Filing Date:
April 28, 2017
Export Citation:
Assignee:
YOKOHAMA RUBBER CO LTD (JP)
International Classes:
C08L9/06; B60C1/00; C08K3/04; C08K3/36
Domestic Patent References:
| WO2016147961A1 | 2016-09-22 |
Foreign References:
| JP2000038423A | 2000-02-08 | |||
| JP2000178378A | 2000-06-27 | |||
| JPH07300511A | 1995-11-14 | |||
| JP2010280853A | 2010-12-16 | |||
| US20030100660A1 | 2003-05-29 |
Other References:
See also references of EP 3456766A4
Attorney, Agent or Firm:
SEIRYU PATENT PROFESSIONAL CORPORATION et al. (JP)
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