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:
Jan. 22, 2002
Filed:
Dec. 22, 1999
Applicant:
Inventors:
Peter Phung Minh Hoang, Calgary, CA;
Dusan Jeremic, Calgary, CA;
Jason Roy Kearns, Calgary, CA;
Iain McLaren Coulter, Calgary, CA;
Robert D. Donaldson, Calgary, CA;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07F 5/06 ; C07F 1/700 ; B01J 3/100 ;
U.S. Cl.
CPC ...
C07F 5/06 ; C07F 1/700 ; B01J 3/100 ;
Abstract
Aluminoxanes are used as activators for the gas, solution or slurry phase polymerization of olefins in the presence of single site catalysts. Aluminoxanes contain residual aluminum alkyls which may poison the catalysts. The residual aluminum alkyls may be bound an/or removed from the aluminoxanes by treatment with carbohydrates such as cellulose, starch or sugar.