The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 30, 2017
Filed:
Jun. 04, 2013
Bridgestone Corporation, Tokyo, JP;
Keisuke Kawashima, Tokyo, JP;
BRIDGESTONE CORPORATION, Tokyo, JP;
Abstract
The present invention is a rubber composition for tire treads, of which the temperature of the peak position of the temperature curve of tan δ is −16.0° C. or higher and −6.0° C. or lower, tan δ at the peak position is larger than 1.13, tan δ at 0° C. is 0.95 or more, and the value obtained by dividing the absolute value of the difference between tan δ at −5° C. and tan δ at 5° C. by the temperature difference between −5° C. and 5° C. {|(tan δ at −5° C.)−(tan δ at 5° C.)|/10} (/° C.) is smaller than 0.045/° C. The invention provides the rubber compositions for tire treads that more highly satisfy both low-heat-generation property and wet braking performance.