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. 08, 1992
Filed:
Dec. 14, 1990
Yoshiharu Hashiguchi, Yokkaichi, JP;
Hideo Katsumata, Yokkaichi, JP;
Kunio Goshima, Yokkaichi, JP;
Toshio Teramoto, Yokkaichi, JP;
Yasuhiko Takemura, Yokkaichi, JP;
Japan Synthetic Rubber Co., Ltd., Tokyo, JP;
Abstract
A hydrogenation catalyst composition comprising, as essential components, (a) at least one bis(cyclopentadienyl)transition metal compound represented by general formula (i): ##STR1## and (b) at least one member selected from the group consisting of complex compounds represented by general formulas (ii) and (iii): ##STR2## and further comprising, if necessary, (c) at least one polar compound selected from the group consisting of ether compounds, thioether compounds, ketone compounds, sulfoxide compounds, carboxylic acid ester compounds, lactone compounds, amine compounds, amide compounds, nitrile compounds and oxime compounds and/or (d) an alkali compound represented by general formula (iv):