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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.:

US 9056925 B1

PDFFull Text
Date of Patent:
Jun. 16, 2015

Filed:

Oct. 25, 2007

Process for production of modified conjugated diene polymers, modified conjugated diene polymers produced by the process, rubber compositions, and tires

Applicants:

Ken Tanaka, Tokyo, JP;

Kouji Masaki, Tokyo, JP;

Yoichi Ozawa, Tokyo, JP;

Eiji Suzuki, Cuyahoga Falls, OH (US);

Christine M. Rademacher, Akron, OH (US);

Terrence E. Hogan, Akron, OH (US);

Takuo Sone, Tokyo, JP;

Takaomi Matsumoto, Tokyo, JP;

Inventors:

Ken Tanaka, Tokyo, JP;

Kouji Masaki, Tokyo, JP;

Yoichi Ozawa, Tokyo, JP;

Eiji Suzuki, Cuyahoga Falls, OH (US);

Christine M. Rademacher, Akron, OH (US);

Terrence E. Hogan, Akron, OH (US);

Takuo Sone, Tokyo, JP;

Takaomi Matsumoto, Tokyo, JP;

Assignees:

BRIDGESTONE CORPORATION, Tokyo, JP;

JSR CORPORATION, Tokyo, JP;

Attorney:

Sughrue Mion, PLLC

Primary Examiner:

Wenwen Cai

Int. Cl.
CPC ...
C08L 83/00 (2006.01); C08C 19/25 (2006.01); B60C 1/00 (2006.01); C08C 19/44 (2006.01); C08L 15/00 (2006.01); C08L 21/00 (2006.01);
U.S. Cl.
CPC ...
C08C 19/25 (2013.01); B60C 1/0016 (2013.04); B60C 1/0025 (2013.04); C08C 19/44 (2013.01); C08L 15/00 (2013.01); C08L 21/00 (2013.01);
Abstract

A process for producing a modified conjugated diene based polymer includes a step (a) of reacting a silicon compound with a conjugated diene based polymer having an active end so that the reaction takes place at the active end, the silicon compound having a protected primary amino group in the molecule thereof and a silicon atom to which a hydrocarbyloxy group and a reactive group are bonded, to thereby modify the active end, and a step (b) of performing condensation reaction, in the presence of a titanium compound serving as a titanium-based condensation-accelerating agent. A rubber composition contains the modified diene polymer, and a tire is produced from the rubber composition.

Find Patent Forward Citations

Tanaka, Ken. (2015). Process for production of modified conjugated diene polymers, modified conjugated diene polymers produced by the process, rubber compositions, and tires (U.S. Patent No. 9056925). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9056925

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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