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:
Jul. 01, 2003
Filed:
Nov. 24, 1999
Applicant:
Inventors:
William J. Heilman, Houston, TX (US);
I-Ching Chiu, Houston, TX (US);
Wei Song, Houston, TX (US);
James C. W. Chien, Amhurst, MA (US);
Assignee:
Pennzoil-Quaker State Company, Houston, TX (US);
Primary Examiner:
Int. Cl.
CPC ...
C07C 9/00 ;
U.S. Cl.
CPC ...
C07C 9/00 ;
Abstract
Various vinylidene-containing polymers are obtained in the presence of a single-site catalyst. For example, the polymers include ethylene/isobutene copolymer, ethylene/propylene/isobutene terpolymer, ethylene/styrene/isobutene terpolymer, ethylene/&agr;-methyl-styrene/isobutene terpolymer, propylene/isobutene copolymer, styrene/isobutene copolymer, and &agr;-methyl-styrene/isobutene copolymer. These polymers may be used to formulate lubricant oils.