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Title:
RUBBER COMPOSITION AND PNEUMATIC TIRE
Document Type and Number:
WIPO Patent Application WO/2020/100492
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a rubber composition that can suppress changes in hardness over time, and a pneumatic tire. The present invention pertains to a rubber composition containing a copolymer obtained by copolymerizing an aromatic vinyl compound and a conjugated diene compound, said rubber composition being characterized in that the heat aging resistance index, represented by formula (1), is 10 or less.

Inventors:
KITAGO RYOTA (JP)
YASUDA RIE (JP)
HIRAO SHOGO (JP)
Application Number:
PCT/JP2019/040356
Publication Date:
May 22, 2020
Filing Date:
October 15, 2019
Export Citation:
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Assignee:
SUMITOMO RUBBER IND (JP)
International Classes:
C08L9/06; B60C1/00; C08K3/04; C08K3/36; C08L15/00
Domestic Patent References:
WO2018110409A12018-06-21
WO2016104144A12016-06-30
Foreign References:
JP2010185025A2010-08-26
JP2017145341A2017-08-24
JPH10218920A1998-08-18
JPH01275605A1989-11-06
JPH05271326A1993-10-19
JPH05271325A1993-10-19
JPH05222115A1993-08-31
JPH11292924A1999-10-26
JP2000037632A2000-02-08
JPS59133203A1984-07-31
JPS635401A1988-01-11
JPS62218403A1987-09-25
JPH0790017A1995-04-04
JPS4319960B11968-08-28
JPS4740473B11972-10-13
Other References:
See also references of EP 3763783A4
Attorney, Agent or Firm:
YASUTOMI & Associates (JP)
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