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:
Sep. 11, 2018
Filed:
Nov. 25, 2011
Ayumi Naka, Hiratsuka, JP;
Takashi Shirokawa, Hiratsuka, JP;
Makoto Ashiura, Hiratsuka, JP;
Yoshihiro Kameda, Hiratsuka, JP;
Masaki Satou, Hiratsuka, JP;
Ayumi Naka, Hiratsuka, JP;
Takashi Shirokawa, Hiratsuka, JP;
Makoto Ashiura, Hiratsuka, JP;
Yoshihiro Kameda, Hiratsuka, JP;
Masaki Satou, Hiratsuka, JP;
The Yokohama Rubber Co., LTD, , JP;
Abstract
A rubber composition comprises a diene rubber including not less than 30% by weight of a modified conjugated diene polymer rubber and, per 100 parts by weight of the diene rubber, from 1 to 25 parts by weight of a tackifying resin, and from 25 to 80 parts by weight of a filler comprising not less than 50% by weight of silica. The modified conjugated diene polymer rubber has a terminal modified group comprising a functional group that interacts with silica. In the modified conjugated diene polymer rubber, aromatic vinyl unit content is from 38% to 48% by weight, vinyl unit content is from 20% to 35%, weight-average molecular weight is from 600,000 to 1,000,000, and glass transition temperature is from −22 to −32° C. A glass transition temperature of the tackifying resin is from 50 to 110° C. higher than the glass transition temperature of the modified conjugated diene polymer rubber.