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:
Jan. 25, 2005
Filed:
Feb. 18, 2003
Steven D. Gray, League City, TX (US);
Tim J. Coffy, Houston, TX (US);
Edwar S. Shamshoum, Gibsonia, PA (US);
Hong Chen, Atlanta, GA (US);
Steven D. Gray, League City, TX (US);
Tim J. Coffy, Houston, TX (US);
Edwar S. Shamshoum, Gibsonia, PA (US);
Hong Chen, Atlanta, GA (US);
Fina Technology, Inc., Houston, TX (US);
Abstract
A method of modifying a Ziegler-Natta type polyolefin catalyst comprises contacting the Ziegler-Natta catalyst with olefin monomer to form a prepolymerized catalyst. The prepolymerized catalyst can comprise a reduced number of catalyst particles having a size of 40 microns or less. The prepolymerized catalyst can be used in a polymerization process to produce polymer fluff particles with a reduced number of polymer fluff fines than the Ziegler-Natta type catalyst.