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:
Oct. 23, 2001
Filed:
May. 14, 1999
Applicant:
Inventor:
William Henry Sikorski, Jr., White Bear Lake, MN (US);
Assignee:
3M Innovative Properties Company, Saint Paul, MN (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08F 2/00 ; C08F 1/006 ; C08F / ;
U.S. Cl.
CPC ...
C08F 2/00 ; C08F 1/006 ; C08F / ;
Abstract
A method is presented for increasing molecular weight and/or stereoregularity of poly(alpha-olefins) by polymerizing alpha-olefins in the presence of 1) a Ziegler-Natta catalyst system and 2) at least one non-polymerizing olefin which is not polymerizable under the polymerization conditions.