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:
Aug. 06, 2013
Filed:
Oct. 06, 2011
Applicant:
Ming-hong Hung, Wilmington, DE (US);
Inventor:
Ming-Hong Hung, Wilmington, DE (US);
Assignee:
E I du Pont de Nemours and Company, Wilmington, DE (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07F 9/14 (2006.01);
U.S. Cl.
CPC ...
Abstract
A process for manufacturing a polyfluroalkanoyl phosphorodichloridate comprising reacting a polyfluoroalkanol having the general formula R—CH—OH, wherein Ris a linear or branched C-Cperfluoroalkyl group optionally interrupted by O, with at least 4 moles of POClper mole of R—CH—OH in the presence of 0.1 to 0.2 moles of LiCl catalyst per mole of R—CH—OH at a temperature between 95° C. and 110° C. to form a phosphorodichloridate of the general formula R—CH—O—P(O)Cl.