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. 21, 2002
Filed:
Apr. 18, 2001
Applicant:
Inventor:
Gregory G. Hlatky, Morrow, OH (US);
Assignee:
Equistar Chemicals L.P., Houston, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08F 4/16 ; C08F 4/44 ; B01J 3/138 ;
U.S. Cl.
CPC ...
C08F 4/16 ; C08F 4/44 ; B01J 3/138 ;
Abstract
The present invention provides an olefin polymerization procatalyst that includes at least one multidentate ligand. The pro-catalyst includes a Group 3 to 10 transition or lanthanide meta and one or more anionic or neutral ligands in an amount that satisfies the valency of the metal such that the pro-catalyst has a net zero charge. The present invention also discloses a method for making the pro-catalyst.