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. 12, 1998
Filed:
Mar. 01, 1996
Yoshitaka Araki, Kurashiki, JP;
Takashi Ishikawa, Kurashiki, JP;
Hirofumi Nakamura, Kurashiki, JP;
Akio Tsuboi, Kurashiki, JP;
Yoshiaki Nanba, Kurashiki, JP;
Takeshi Okano, Kurashiki, JP;
Takayuki Aoshima, Yokohama, JP;
Shinji Iwade, Kurashiki, JP;
Abstract
An oligomerization of .alpha.-olefins is carried out in a solvent using a chromium-based catalyst system comprising at least (a) a chromium compound, (b) at least one nitrogen-containing compound selected from amines, amides and imides, and (c) an alkylaluminum compound, and the catalyst components and by-product polymers are recovered simultaneously from the reaction solution. Such process is an industrially advantageous process for producing .alpha.-olefin oligomers by using a chromium-based catalyst, and is simple and capable of efficiently recovering the by-product polymers and the catalyst components simultaneously.