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. 05, 2015
Filed:
Aug. 06, 2012
Naoki Kushida, Kanagawa, JP;
Naoki Kushida, Kanagawa, JP;
The Yokohama Rubber Co., Ltd., Tokyo, JP;
Abstract
A rubber composition for tire treads is obtained by blending, per 100 parts by mass of a diene rubber, 5 to 150 parts by mass of silica and 0.5 to 20 parts by mass of a silicone oligomer represented by the following siloxane average formula (1): (X)(Y)(R)(R)SiO(wherein X is a mercapto group-containing organic group; Y is a hydrolyzable group, Ris a monovalent hydrocarbon group having from 4 to 10 carbon atoms, Ris a monovalent hydrocarbon group having from 1 to 3 carbon atoms, 0<a<1, 0<b<3, 0<c<2, 0≦d<2, and 0<a+b+c+d<4). The diene rubber contains an aromatic vinyl-conjugated diene copolymer in an amount of at least 50 parts by mass per 100 parts by mass of the diene rubber, the aromatic vinyl-conjugated diene copolymer having an aromatic vinyl content of 20 to 45 mass % and a vinyl bond content in the conjugated diene of 10 to 50%.