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. 22, 2011
Filed:
Oct. 04, 2006
Ryouji Tanaka, Tokyo, JP;
Kouichirou Tani, Tokyo, JP;
Takuo Sone, Tokyo, JP;
Toshihiro Tadaki, Tokyo, JP;
Junko Kurazumi, Kodaira, JP;
Koji Masaki, Kodaira, JP;
Yoichi Ozawa, Kodaira, JP;
Ryouji Tanaka, Tokyo, JP;
Kouichirou Tani, Tokyo, JP;
Takuo Sone, Tokyo, JP;
Toshihiro Tadaki, Tokyo, JP;
Junko Kurazumi, Kodaira, JP;
Koji Masaki, Kodaira, JP;
Yoichi Ozawa, Kodaira, JP;
JSR Corporation, Tokyo, JP;
Bridgestone Corporation, Tokyo, JP;
Abstract
A process for producing a modified conjugated diene polymer includes subjecting an active terminal of a conjugated diene polymer having a vinyl content of less than 10% and a cis-1,4 bond content of 75% or more to a modification reaction with an alkoxysilane compound, and subjecting the alkoxysilane compound (residue) to a condensation reaction in an aqueous solution at a pH of 9 to 14 and a temperature of 85 to 180° C. in the presence of a condensation accelerator including a compound containing titanium. The modified conjugated diene polymer exhibits low heat build-up and increased reinforcing properties when used for a rubber composition, and exhibits excellent wear resistance, mechanical characteristics, and processability.