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:
Feb. 14, 2017
Filed:
Nov. 25, 2011
Masaki Satou, Hiratsuka, JP;
Takashi Shirokawa, Hiratsuka, JP;
Makoto Ashiura, Hiratsuka, JP;
Yoshihiro Kameda, Hiratsuka, JP;
Ayumi Naka, Hiratsuka, JP;
Keisuke Maejima, Hiratsuka, JP;
Masaki Satou, Hiratsuka, JP;
Takashi Shirokawa, Hiratsuka, JP;
Makoto Ashiura, Hiratsuka, JP;
Yoshihiro Kameda, Hiratsuka, JP;
Ayumi Naka, Hiratsuka, JP;
Keisuke Maejima, Hiratsuka, JP;
Abstract
A rubber composition for use in tire treads comprises a diene rubber including not less than 40% by weight of a modified conjugated diene polymer rubber and, per 100 parts by weight of the diene rubber, from 66 to 110 parts by weight of a filler. The filler comprises not less than 50% by weight of silica. The modified conjugated diene polymer rubber is obtained by copolymerizing a conjugated diene monomer unit and an aromatic vinyl monomer unit in a hydrocarbon solvent using an organic active metal compound as an initiator. A resulting active conjugated diene polymer chain thereof has a terminal modified group, obtained by reacting at least one type of compound having a functional group that is reactable with the active terminal of the polymer chain. Moreover, the terminal modified group has a functional group that interacts with the silica.