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:
Feb. 14, 2006
Filed:
Aug. 19, 2003
Michael Chi-wang Chan, Hong Kong, CN;
Chi-fai Kui, Hong Kong, CN;
Michael Chi-Wang Chan, Hong Kong, CN;
Chi-Fai Kui, Hong Kong, CN;
The University of Hong Kong, , HK;
Abstract
An olefin polymerization catalyst system is prepared from a catalyst of formula I or II:R–Rand R–Rin formulae I and II, respectively, are each independently —H, -halo, —NO, —CN, —(C–C)hydrocarbyl, —O(C–C)hydrocarbyl, —N((C–C)hydrocarbyl), —Si((C–C)hydrocarbyl), —(C–C)heterohydrocarbyl, -aryl, or -heteroaryl, each being unsubstituted or substituted with one or more —Rand —Rgroups, respectively. Two R–Rcan be joined to form a cyclic group. Rin formula I is -halo, —(C–C)hydrocarbyl, —O(C–C)hydrocarbyl, —NO, —CN, —Si((C–C)hydrocarbyl), —N((C–C)hydrocarbyl), —(C–C)heterohydrocarbyl, -aryl, or -heteroaryl. T in formula I is —CRR— wherein Rand Rare defined as for Rabove. Ris independently -halo, —NO, —CN, —(C–C)hydrocarbyl, —O(C–C)hydrocarbyl, —N((C–C)hydrocarbyl), —Si((C–C)hydrocarbyl), —(C–C)heterohydrocarbyl, -aryl, or -heteroaryl. E, M, m, X, Y, and n in formulae I and II are defined herein.