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:
Sep. 14, 2021
Filed:
Oct. 11, 2018
Applicant:
Lotte Chemical Corporation, Seoul, KR;
Inventors:
Assignee:
LOTTE CHEMICAL CORPORATION, Seoul, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 2/32 (2006.01); B01J 31/22 (2006.01); C07C 11/107 (2006.01);
U.S. Cl.
CPC ...
C07C 2/32 (2013.01); B01J 31/22 (2013.01); B01J 2531/62 (2013.01); C07C 11/107 (2013.01);
Abstract
Disclosed are a catalyst system capable of selectively oligomerizing olefins including ethylene and a method for preparing an olefin oligomer by using the same and, specifically, a novel catalyst system capable of trimerizing and tetramerizing olefins, unlike olefin oligomerization catalyst systems that have been reported so far, and a method for preparing an olefin oligomer by using the same. The present invention provides a catalyst system for olefin oligomerization, the catalyst system comprising: a ligand compound represented by chemical formula 1 or 2; a chromium compound; a metal alkyl compound; and an aliphatic or alicyclic hydrocarbon solvent.