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:
Nov. 23, 2010
Filed:
Dec. 19, 2006
Klaus Hintzer, Kastl, DE;
Michael Jürgens, Neuoetting, DE;
Harald Kaspar, Burgkirchen, DE;
Herbert Königsmann, Burgkirchen, DE;
Andreas R Maurer, Langenneufnach, DE;
Werner Schwertfeger, Altoetting, DE;
Tilman C. Zipplies, Burghausen, DE;
Klaus Hintzer, Kastl, DE;
Michael Jürgens, Neuoetting, DE;
Harald Kaspar, Burgkirchen, DE;
Herbert Königsmann, Burgkirchen, DE;
Andreas R Maurer, Langenneufnach, DE;
Werner Schwertfeger, Altoetting, DE;
Tilman C. Zipplies, Burghausen, DE;
3M Innovative Properties Company, St. Paul, MN (US);
Abstract
The invention provides a fluorinated surfactant having the general formula:[R—(O)—CHF—(CF)—COO—]X  (I)wherein Rrepresents a partially or fully fluorinated aliphatic group optionally interrupted with one or more oxygen atoms, t is 0 or 1 and n is 0 or 1, Xrepresents a cation having a valence i and i is 1, 2 or 3. The surfactant can be used in emulsion polymerization of fluoromonomers to prepare fluoropolymers.