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. 21, 2009
Filed:
Feb. 27, 2007
Applicant:
Donald F. Lyons, Wilmington, DE (US);
Inventor:
Donald F. Lyons, Wilmington, DE (US);
Assignee:
Dupont Performance Elastomers LLC, Wilmington, DE (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08F 4/00 (2006.01); C08F 12/20 (2006.01); C08F 14/08 (2006.01); C08F 114/18 (2006.01); C08F 214/18 (2006.01);
U.S. Cl.
CPC ...
Abstract
An aqueous semi-batch polymerization process is disclosed for the manufacture of dipolymers of tetrafluoroethylene and 3,3,3-trifluoropropene that contain between 45 and 95 mole percent tetrafluoroethylene and between 5 and 55 mole percent 3,3,3-trifluoropropene.