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:
Aug. 27, 1991
Filed:
Dec. 07, 1988
Applicant:
Inventors:
Masao Ishii, Kashima, JP;
Hideo Takamatsu, Kashima, JP;
Kazushige Ishiura, Kashima, JP;
Shobu Minatono, Kashima, JP;
Assignee:
Kuraray Company Ltd., Kurashiki, JP;
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
585276 ; 585255 ; 585274 ; 525338 ; 525339 ;
Abstract
A process for the hydrogenation of conjugated diene polymers having alcoholic hydroxyl groups, is provided. In the process, reduced nickel is used as a catalyst and an ether or a mixture of an ether and a hydrocarbon is used as a solvent for the hydrogenation reaction whereby elimination of the group rarely occurs with a very high hydrogenation rate being attained.