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. 13, 1996
Applicant:
Inventors:
Eiji Tanaka, Kurashiki, JP;
Hisao Urata, Sagamihara, JP;
Toshiyuki Oshiki, Yokohama, JP;
Takayuki Aoshima, Yokohama, JP;
Riichirou Kawashima, Kurashiki, JP;
Shinji Iwade, Kurashiki, JP;
Hirofumi Nakamura, Kurashiki, JP;
Syunji Katsuki, Kurashiki, JP;
Takeshi Okano, Kurashiki, JP;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
585520 ; 585511 ; 585512 ; 585521 ; 585522 ; 585523 ;
Abstract
The disclosure describes a process for preparing .alpha.-olefin oligomers, which comprises carrying out oligomerization of an .alpha.-olefin in a solvent by reacting said .alpha.-olefin in a chromium-based catalyst system composed of a combination of at least a chromium compound, an amine or metal amide, and an alkylaluminum compound, in a contacting mode that the chromium compound and the alkylaluminum compound are not previously contacted with each other.