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:
Mar. 01, 2005
Filed:
Jun. 14, 2004
Harald Kaspar, Burgkirchen, DE;
Klaus Hintzer, Kastl, DE;
Karl-dieter Weilandt, Minneapolis, MN (US);
Jost Krichel, Winhöring, DE;
Erik Peters, Geilenkirchen, DE;
Lisa P. Chen, St. Paul, MN (US);
Harald Kaspar, Burgkirchen, DE;
Klaus Hintzer, Kastl, DE;
Karl-Dieter Weilandt, Minneapolis, MN (US);
Jost Krichel, Winhöring, DE;
Erik Peters, Geilenkirchen, DE;
Lisa P. Chen, St. Paul, MN (US);
3M Innovative Properties Company, St. Paul, MN (US);
Abstract
The present invention provides a method of making a fluoropolymer comprising repeating units derived from one or more gaseous fluorinated monomers. The method comprises an aqueous emulsion polymerization of gaseous fluorinated monomers in the presence of an ether selected from the group consisting of dimethyl ether (DME), methyl tertiary butyl ether (MTBE) and mixtures thereof.