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:
Jul. 26, 1994
Filed:
Mar. 04, 1993
Applicant:
Inventors:
Ryoji Sugise, Ube, JP;
Kouichi Kashiwagi, Ube, JP;
Masashi Shirai, Ube, JP;
Toshihiro Shimakawa, Ube, JP;
Assignee:
Ube Industries, Ltd., Yamaguchi, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
558364 ; 558363 ;
Abstract
Straight-chain acrylonitrile dimers including 1,4-dicyanobutene, 1,4-dicyanobutadiene and adiponitrile are produced at a high selectivity rate and yield by dimerizing acrylonitrile in the presence of a catalyst comprising at least one ruthenium compound, for example dichloro-tetrakis (dimethylsulfoxide) ruthenium, and in the presence of at least one organic acid, for example, propionic acid, and optionally in the further presence of a basic compound, a reducing compound and/or a sulfoxide compound.