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:
Jun. 11, 2002
Filed:
Mar. 06, 1998
Applicant:
Inventors:
John A. Ewen, Houston, TX (US);
Robert W. Strozier, Houston, TX (US);
Robert L. Jones, Jr., Elkton, MD (US);
Michael J. Elder, Elkton, MD (US);
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07F 7/08 ; C07F 7/28 ; C07F 5/00 ; C07F 7/30 ; C07F 9/00 ;
U.S. Cl.
CPC ...
C07F 7/08 ; C07F 7/28 ; C07F 5/00 ; C07F 7/30 ; C07F 9/00 ;
Abstract
New metallocene compounds are described where the ligand contains at least one open-pentadienyl containing radical characterized by a cyclic or acyclic, six &pgr; electron, delocalized, five atomic center structure. These metallocenes can advantageously be used in catalyst systems for the polymerization of olefins to generate a wide variety of different polymers including HDPE, LLDPE, ethylenelpropylene/(diene) elastomers, tactiospecific C3+&agr;-olefin polymers, intimate mixture thereof and the like.