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:
Dec. 14, 1993
Filed:
Nov. 25, 1992
Applicant:
Inventors:
Yoshiharu Hashiguchi, Mie, JP;
Takashi Ishida, Yokkaichi, JP;
Hiroyuki Sasanuma, Yokkaichi, JP;
Yasuhiko Takemura, Yokkaichi, JP;
Assignee:
Japan Synthetic Rubber Co., Ltd., Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08F / ;
U.S. Cl.
CPC ...
502115 ; 502103 ; 502117 ;
Abstract
A catalyst composition comprising: (a) a bis(cyclopentadienyl) transition metal compound, (b) at least one polarized compound selected from the group consisting of carbonyl group-containing compounds and epoxy group containing compounds, and (c) an organic lithium compound. It has a high hydrogenation activity and is useful for hydrogenating olefinically unsaturated polymers for providing the olefinically unsaturated polymers with excellent characteristics as superior weatherability, good heat resistance, superb oxidation resistance, and the like.