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:
Mar. 28, 2006
Filed:
Dec. 31, 2003
Thomas R. Boussie, Menlo Park, CA (US);
Gary M. Diamond, San Jose, CA (US);
Christopher Goh, San Francisco, CA (US);
Keith A. Hall, San Jose, CA (US);
Anne M. Lapointe, Sunnyvale, CA (US);
Margarete K. Leclerc, Santa Clara, CA (US);
Cheryl Lund, Milpitas, CA (US);
Vince Murphy, Campbell, CA (US);
Thomas R. Boussie, Menlo Park, CA (US);
Gary M. Diamond, San Jose, CA (US);
Christopher Goh, San Francisco, CA (US);
Keith A. Hall, San Jose, CA (US);
Anne M. LaPointe, Sunnyvale, CA (US);
Margarete K. Leclerc, Santa Clara, CA (US);
Cheryl Lund, Milpitas, CA (US);
Vince Murphy, Campbell, CA (US);
Symyx Technologies, Inc., Santa Clara, CA (US);
Abstract
New ligands, compositions, metal-ligand complexes and arrays with pyridyl-amine ligands are disclosed that catalyze the polymerization of monomers into polymers. Certain of these catalysts with hafnium metal centers have high performance characteristics, including higher comonomer incorporation into ethylene/olefin copolymers, where such olefins are for example, 1-octene, isobutylene or styrene. Certain of the catalysts are particularly effective at polymerizing propylene to high molecular weight isotactic polypropylene in a solution process at a variety of polymerization conditions.