Title:
POLYISOPRENE, RUBBER COMPOSITION, AND TIRE
Document Type and Number:
WIPO Patent Application WO/2020/208901
Kind Code:
A1
Abstract:
The present invention addresses the problem of providing a novel polyisoprene capable of suppressing deterioration of the fuel-saving performance of a tire. This problem is solved by a polyisoprene characterized in that the vinyl bond content is 30 mol% or greater and the ratio between the weight-average absolute molecular weight determined by GPC-MALS and the weight-average molecular weight in terms of polystyrene determined by GPC [(weight-average absolute molecular weight)/(weight-average molecular weight in terms of polystyrene)] is 0.850 or less.
Inventors:
TAKANO SHIGENAGA (JP)
HOTTA AYA (JP)
TAMAKI SATORU (JP)
HOTTA AYA (JP)
TAMAKI SATORU (JP)
Application Number:
PCT/JP2020/003025
Publication Date:
October 15, 2020
Filing Date:
January 28, 2020
Export Citation:
Assignee:
BRIDGESTONE CORP (JP)
International Classes:
B60C1/00; C08F36/08; C08L9/00
Domestic Patent References:
| WO2017064859A1 | 2017-04-20 |
Foreign References:
| JP2000154210A | 2000-06-06 | |||
| CN108929396A | 2018-12-04 | |||
| JP2014162809A | 2014-09-08 | |||
| JP2017088770A | 2017-05-25 |
Other References:
See also references of EP 3954549A4
Attorney, Agent or Firm:
SUGIMURA Kenji (JP)
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