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:
May. 08, 2001
Filed:
Feb. 17, 1999
Randal Ray Ford, Longview, TX (US);
William Albert Ames, Longview, TX (US);
Kenneth Alan Dooley, Longview, TX (US);
Jeffrey James Vanderbilt, Longview, TX (US);
Alan George Wonders, Longview, TX (US);
Eastman Chemical Company, Kingsport, TN (US);
Abstract
A novel process for producing homopolymers and copolymers of ethylene which involves contacting ethylene and/or ethylene and at least one or more olefin comonomer(s) under polymerization conditions with a Ziegler-Natta type catalyst substantially free of internal electron donor, trimethylaluminum and at least one compound containing at least one carbon-oxygen-carbon linkage (C—O—C) of the formula R,—O(—R,—O),—R,where n ranges from 0 to 30, and R,, R,and R,independently contain from 1 to 30 carbon atoms and from 0 to 30 heteroatoms of an element, or mixtures thereof, selected from Groups 13, 14, 15, 16 and 17 of the Periodic Table of Elements, and further wherein R,, R,and/or R,can be linked and form part of a cyclic or polycyclic structure. Also provided are films and articles produced therefrom.