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:
Jan. 23, 2018
Filed:
Dec. 29, 2015
Sumitomo Rubber Industries, Ltd., Kobe-shi, Hyogo, JP;
Masanobu Nakamura, Kobe, JP;
SUMITOMO RUBBER INDUSTRIES, LTD., Kobe-Shi, Hyogo, JP;
Abstract
A rubber composition for tire inhibits increase in a Mooney viscosity and has satisfactory processability, abrasion resistance and mechanical strength. The rubber composition for tire comprises: 10 to 120 parts by mass of silica having a nitrogen adsorption specific surface area of 150 m/g or more, based on 100 parts by mass of a rubber component, and 1 to 25 parts by mass of a silane coupling agent comprising a polysulfide coupling agent represented by the following formula (1), based on 100 parts by mass of the silica, wherein the polysulfide coupling agent comprises 83 to 87% by mass of disulfide of x=2 measured by high performance liquid chromatography and has a pH value of 7.7 to 8.2, (wherein x is an integer of 1 or more and has a distribution).