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:
Sep. 05, 2000
Filed:
Aug. 07, 1998
Applicant:
Inventors:
Ramesh Krishnamurti, Williamsville, NY (US);
Sandor Nagy, Grand Island, NY (US);
John Tyrell, Williamsville, NY (US);
Bradley P Etherton, Houston, TX (US);
Assignee:
Equistar Chemicals, L.P., Houston, TX (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01J / ; B01J / ; C08F / ; C08F / ; C08F / ;
U.S. Cl.
CPC ...
502103 ; 502114 ; 502117 ; 502155 ; 526134 ; 526160 ; 526943 ;
Abstract
Single-site catalyst systems containing alkylimido ligands are disclosed. The catalyst systems comprise a co-catalyst and a Group 3-10 transition metal catalyst. The catalyst includes an alkyl- or arylimido ligand and a polymerization-stable, anionic ligand selected from boraaryl, pyrrolyl, and azaborolinyl. When used to polymerize olefins, the catalyst systems are highly productive, give good comonomer incorporation, and give polymers with narrow molecular weight distributions.