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. 07, 1998
Filed:
May. 24, 1996
Baishen Liang, Newark, DE (US);
Ming-Hong Hung, Wilmington, DE (US);
Paul Raphael Resnick, Cary, NC (US);
E. I. du Pont de Nemours and Company, Wilmington, DE (US);
Abstract
A process for the production of perfluoromethyl perfluorovinyl ether (PMVE) and perfluoroethyl perfluorovinyl ether (PEVE) from hexafluoropropylene epoxide (HFPO) and a mixture comprising carbonyl fluoride (CF) and perfluoroacetyl fluoride (PAF) is disclosed. The process includes a step (a) involving the reaction of hexafluoropropylene epoxide (HFPO) with a mixture of carbonyl fluoride (CF) and perfluoroacetyl fluoride (PAF) to produce a mixture of 2,3,3,3-tetrafluoro-2-(trifluoromethoxy)propionic acid fluoride (PMPF) and 2,3,3,3-tetrafluoro-2-(pentafluoroethoxy)propionic acid fluoride (PEPF). In a second step, a mixture of PMPF and PEPF made in the step (a) is dehalocarbonylated to produce a mixture of PMVE and PEVE.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile