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:
Apr. 03, 2001
Filed:
May. 25, 1999
Shaotian Wang, Mason, OH (US);
Bradley P. Etherton, Cincinnati, OH (US);
Karen E. Meyer, Cincinnati, OH (US);
Michael W. Lynch, West Chester, OH (US);
Linda N. Winslow, Cincinnati, OH (US);
Leonard V. Cribbs, Hamilton, OH (US);
Jia-Chu X. Liu, Mason, OH (US);
Equistar Chemicals, L.P., Houston, TX (US);
Abstract
A supported olefin polymerization catalyst system and a method of making it are disclosed. The catalyst system comprises: (a) a support chemically treated with an organoaluminum, organosilicon, organomagnesium, or organoboron compound; (b) a single-site catalyst that contains a polymerization-stable, heteroatomic ligand; and (c) an activator. Chemical treatment is a key to making supported heterometallocenes that have high activity and long shelf-lives, and can effectively incorporate comonomers.