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. 11, 1984
Filed:
Sep. 09, 1983
Applicant:
Inventor:
Charles K Buehler, Naperville, IL (US);
Assignee:
Northern Petrochemical Company, Omaha, NE (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F / ;
U.S. Cl.
CPC ...
502108 ; 502127 ; 526142 ;
Abstract
A method is disclosed for increasing the productivity of an olefin polymerization catalyst. The catalyst contains an aluminum chloride co-crystallized titanium halide modified with an electron donor containing an ester group. The catalyst component is washed with an olefin and then electron donor is added back to the washed catalyst component, thereby greatly increasing its productivity without significantly adversely affecting the crystallinity of the polymer produced.