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:
Jun. 08, 1999
Filed:
Jun. 20, 1995
Hisao Urata, Yokohama, JP;
Takayuki Aoshima, Yokohama, JP;
Toshiyuki Oshiki, Ikeda, JP;
Jun Takahara, Yokohama, JP;
Shinji Iwade, Kurashiki, JP;
Yoshiaki Nanba, Kurashiki, JP;
Yoshitaka Araki, Kurashiki, JP;
Hirofumi Nakamura, Kurashiki, JP;
Takeshi Okano, Kurashiki, JP;
Abstract
The disclosure described a process for producing an .alpha.-olefin oligomer, which comprises carrying out oligomerization of an .alpha.-olefin in a solvent in the presence of a catalytically effective amount of a chromium-based catalyst system composed of a combination of at least (a) a chromium compound, (b) a nitrogen-containing compound of at least one selected from the group consisting of an amine, an amide and an imide, (c) an alkylaluminum compound and (d) a halogen-containing compound,