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Title:
COPOLYMER, METHOD FOR PRODUCING COPOLYMER, RUBBER COMPOSITION AND TIRE
Document Type and Number:
WIPO Patent Application WO/2019/171679
Kind Code:
A1
Abstract:
The present invention addresses the problem of providing a copolymer which is reduced in heat generation in a low strain region, while having excellent wear resistance and crack growth resistance, and which exhibits good workability. A solution to this problem according to the present invention is a copolymer which contains at least a non-conjugated olefin unit and a conjugated diene unit, and which is characterized in that: the content of the non-conjugated olefin unit is 40 mol% or more; and the crystallinity derived from the non-conjugated olefin unit at 100-150°C as measured by a differential scanning calorimeter (DSC) is 4.0% or less.

Inventors:
TAKANO Shigenaga (1-1 Kyobashi 3-chom, Chuo-ku Tokyo 40, 〒1048340, JP)
TARDIF Olivier (1-1 Kyobashi 3-chom, Chuo-ku Tokyo 40, 〒1048340, JP)
Application Number:
JP2018/044040
Publication Date:
September 12, 2019
Filing Date:
November 29, 2018
Export Citation:
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Assignee:
BRIDGESTONE CORPORATION (1-1 Kyobashi 3-chome, Chuo-ku Tokyo, 40, 〒1048340, JP)
International Classes:
C08F236/04; B60C1/00; C08F4/44; C08F4/606
Domestic Patent References:
WO2017064857A12017-04-20
WO2017064859A12017-04-20
WO2012014457A12012-02-02
WO2012164914A12012-12-06
Foreign References:
JP2016528359A2016-09-15
JP2003532766A2003-11-05
JP2006503141A2006-01-26
JPH1135634A1999-02-09
JP2015212333A2015-11-26
JP2010501719A2010-01-21
Other References:
"Testing Methods for Transition Temperatures of Plastics", JAPANESE INDUSTRIAL STANDARD JIS K 7121-1987, 1987, Retrieved from the Internet [retrieved on 20190214]
Attorney, Agent or Firm:
SUGIMURA Kenji (36F Kasumigaseki Common Gate West, 3-2-1 Kasumigasek, Chiyoda-ku Tokyo 13, 〒1000013, JP)
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