Title:
TIRE TREAD VULCANIZED RUBBER COMPOSITION, TIRE, AND METHOD FOR EVALUATING TIRE TREAD VULCANIZED RUBBER COMPOSITIONS
Document Type and Number:
WIPO Patent Application WO/2020/144921
Kind Code:
A1
Abstract:
Provided are: a tire tread vulcanized rubber composition which is highly robust in terms of anti-wear performance; a tire equipped with said vulcanized rubber composition; and a method for evaluating tire tread vulcanized rubber compositions. This vulcanized rubber composition is to be used in a tire tread. The rolling velocity V of a cylindrical rubber sample 2 is 2 when a regression equation is calculated which provides the wear amount Z of the rubber sample 2 in response to the rolling velocity V and the wear energy E when a wear test in which the rubber sample 2 is rolled while being pressed against a pseudo road surface 8 is performed multiple times by changing the rolling velocity V of the rubber sample 2 and the wear energy E acting on the rubber sample 2. In the range of 5-25 km/h, the first slope e of the wear amount Z relative to the wear energy E in the regression equation is 1.8 or less.
Inventors:
NAKANO SHINYA (JP)
TADA TOSHIO (JP)
TADA TOSHIO (JP)
Application Number:
PCT/JP2019/043075
Publication Date:
July 16, 2020
Filing Date:
November 01, 2019
Export Citation:
Assignee:
SUMITOMO RUBBER IND (JP)
International Classes:
B60C1/00; C08L21/00; G01N3/56
Foreign References:
| JP2016125011A | 2016-07-11 | |||
| JP2014234389A | 2014-12-15 | |||
| JP2018135412A | 2018-08-30 | |||
| JP2011093989A | 2011-05-12 | |||
| JP2014518912A | 2014-08-07 | |||
| JP2017072417A | 2017-04-13 | |||
| JP2020008330A | 2020-01-16 |
Attorney, Agent or Firm:
SUMITOMO Shintaro (JP)
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