Title:
RUBBER COMPOSITION AND PNEUMATIC TIRE USING SAME
Document Type and Number:
WIPO Patent Application WO/2017/195678
Kind Code:
A1
Abstract:
Provided is a rubber composition with improved workability and wear resistance compared to previous levels. 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 unit and/or styrene-derived units, decomposition component V1 which contains one 1,2-conjugated butadiene-derived unit accounts for at least 20 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/or styrene-derived units, decomposition component S2V1 which includes two styrene-derived units and one 1,2-conjugated butadiene-derived units accounts for at least 4 mol.%, and (4) the vinyl content of the butadiene moiety is 20% or more but less than 50%.
Inventors:
SEKINE YUKO (JP)
ASHIURA MAKOTO (JP)
YATSUYANAGI FUMITO (JP)
ASHIURA MAKOTO (JP)
YATSUYANAGI FUMITO (JP)
Application Number:
PCT/JP2017/017054
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
Foreign References:
JP2000038423A | 2000-02-08 | |||
JP2000178378A | 2000-06-27 | |||
JPH07300511A | 1995-11-14 | |||
JP2010280853A | 2010-12-16 | |||
US20030100660A1 | 2003-05-29 | |||
JPH03239737A | 1991-10-25 | |||
JPS57179212A | 1982-11-04 | |||
JP2006249069A | 2006-09-21 |
Other References:
TANAKA ET AL., POLYMER, vol. 22, 1981, pages 1721
MACROMOLECULES, vol. 16, 1983, pages 1925
See also references of EP 3456768A4
MACROMOLECULES, vol. 16, 1983, pages 1925
See also references of EP 3456768A4
Attorney, Agent or Firm:
SEIRYU PATENT PROFESSIONAL CORPORATION et al. (JP)
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