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:
Apr. 28, 1992
Filed:
Jun. 03, 1991
Applicant:
Inventor:
Clifford C Lee, Houston, TX (US);
Assignee:
Phillips Petroleum Company, Bartlesville, OK (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F / ;
U.S. Cl.
CPC ...
526116 ; 526114 ; 526119 ; 526125 ; 526352 ; 502103 ;
Abstract
A process as disclosed for improving the particle size of a olefin polymerization catalyst. The process involves combining the catalyst with an alkoxide-containing liquid comprising a transition metal alkoxide and an aluminum alkyl, causing said alkoxide and said aluminum alkyl to react for form a precipitate and then recovering the resulting solid. Also disclosed are the catalysts produced by such a process and the use of such catalysts in the polymerization of olefins.