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:
May. 13, 1986
Filed:
Jan. 11, 1985
Applicant:
Inventors:
Hisao Ono, Yokkaichi, JP;
Fumio Tsutsumi, Yokkaichi, JP;
Mitsuhiko Sakakibara, Yokkaichi, JP;
Eitaro Okuya, Mie, JP;
Assignee:
Japan Synthetic Rubber Co., Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
C08F / ;
U.S. Cl.
CPC ...
525245 ; 525247 ; 525250 ; 525261 ; 525271 ; 525314 ; 526146 ;
Abstract
A diene polymer produced by polymerizing a conjugated diene monomer in a solvent solution of an active lithium-terminated polymer in the presence of a catalyst consisting of (A) a cobalt compound and (B) carbon disulfide and/or phenylisothiocyanic acid. The diene polymer comprises a 1,2-polybutadiene portion having a high percentage of vinyl conformation. The diene polymer has substantially no mercaptan compound.