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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 9745394 B1

PDFFull Text
Date of Patent:
Aug. 29, 2017

Filed:

Dec. 15, 2015

Conjugated diene polymer and method for producing same

Applicants:

Zeon Corporation, Chiyoda-ku, Tokyo, JP;

Kyoto University, Sakyo-ku, Kyoto, JP;

Inventors:

Fumiaki Bando, Tokyo, JP;

Shingo Okuno, Tokyo, JP;

Shigetaka Hayano, Tokyo, JP;

Mitsuo Sawamoto, Kyoto, JP;

Makoto Ouchi, Kyoto, JP;

Assignees:

ZEON CORPORATION, Tokyo, JP;

KYOTO UNIVERSITY, Kyoto, JP;

Attorney:

Birch, Stewart, Kolasch & Birch, LLP

Primary Examiner:

Caixia Lu

Int. Cl.
CPC ...
C08F 36/04 (2006.01); C08F 236/04 (2006.01); C08F 236/06 (2006.01); C08F 236/08 (2006.01); C08F 236/10 (2006.01); C08F 236/16 (2006.01); C08F 4/80 (2006.01); C07F 17/02 (2006.01); C08F 136/08 (2006.01); C07F 9/50 (2006.01); C08C 19/12 (2006.01); C07F 15/00 (2006.01); C08F 236/12 (2006.01); C08F 4/72 (2006.01);
U.S. Cl.
CPC ...
C08F 136/08 (2013.01); C07F 9/5022 (2013.01); C07F 15/0046 (2013.01); C07F 17/02 (2013.01); C08C 19/12 (2013.01); C08F 4/80 (2013.01); C08F 36/04 (2013.01); C08F 236/04 (2013.01); C08F 236/08 (2013.01); C08F 236/10 (2013.01); C08F 236/12 (2013.01); C08F 236/16 (2013.01); C08F 4/72 (2013.01);
Abstract

Conjugated diene polymer comprising at least a conjugated diene monomer unit, the conjugated diene polymer has a number-average molecular weight (Mn) in terms of polystyrene of 1,000 to 1,000,000, a ratio (Mw/Mn) of a weight-average molecular weight (Mw) to the number-average molecular weight (Mn) of lower than 2.0 and the polymer bears a halogen atom at a terminal of the polymer chain. Method for producing the conjugated diene polymer comprises subjecting a monomer containing at least a conjugated diene to living radical polymerization using a polymerization initiator comprising a halogenocyclopentadienyl triorganophosphine η-olefin ruthenium complex represented by formula (6) (and an organic halide.

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