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:
Nov. 15, 2011
Filed:
Apr. 24, 2007
Applicants:
James C. Stevens, Richmond, TX (US);
Daniel D. Vanderlende, Sugar Land, TX (US);
Inventors:
James C. Stevens, Richmond, TX (US);
Daniel D. VanderLende, Sugar Land, TX (US);
Assignee:
Dow Global Technologies LLC, Midland, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F 4/76 (2006.01); C08F 4/64 (2006.01); C08F 4/52 (2006.01); C08F 110/06 (2006.01); C08F 210/06 (2006.01);
U.S. Cl.
CPC ...
Abstract
A process for polymerization of propylene, optionally ethylene, and further optionally one or more Cα-olefins and/or one or more conjugated or nonconjugated dienes under continuous, solution polymerization conditions to prepare a high molecular weight polymer or interpolymer, said process comprising conducting the polymerization in the presence of a catalyst composition comprising a hafnium complex of a polyvalent aryloxyether.