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:
Dec. 12, 2006
Filed:
Jul. 25, 2003
Jon L. Howell, Bear, DE (US);
Erik W. Perez, Middletown, DE (US);
Alfred Waterfeld, Tuscaloosa, AL (US);
Chadron Mark Friesen, Langley, CA;
Joseph Stuart Thrasher, Tuscaloosa, AL (US);
Ireneusz Nowak, Provo, UT (US);
Jon L. Howell, Bear, DE (US);
Erik W. Perez, Middletown, DE (US);
Alfred Waterfeld, Tuscaloosa, AL (US);
Chadron Mark Friesen, Langley, CA;
Joseph Stuart Thrasher, Tuscaloosa, AL (US);
Ireneusz Nowak, Provo, UT (US);
E. I. du Pont de Nemours and Company, Wilmington, DE (US);
Abstract
A perfluoropolyether and a composition comprising the perfluoropolyether are provided in which the perfluoropolyether comprises at least one bromine or iodine atom at the primary position of the perfluoropolyether. Also provided is a process for producing the composition in which the process comprises contacting a perfluoropolyether acid fluoride moiety with a metal bromide or metal iodide or a suitable polyether secondary iodide under a condition sufficient to effect the production of a perfluoropolyether comprising at least one bromine or iodine at the primary position.