Coating composition

US7754795B2 · kind B2 · utility

Assignee

• 3M INNOVATIVE PROPERTIES COMPANY · US

Inventors

• Klaus Hintzer · Woodbury, US
• Michael Jürgens · Rheydt, DE
• Harald Kaspar · Altötting, DE
• Herbert Koenigsmann · Altötting, DE
• Kai H. Lochhaas · Neuötting, DE
• Andreas Maurer · Zürich, CH
• Werner Schwertfeger · Altötting, DE
• Tilman C. Zipplies · Burghausen, DE
• Ludwig Mayer · San Jose, US
• Michael C. Dadalas · Eggenfelden, DE
• George G. I. Moore · Afton, US
• Jay F. Schulz · Eagan, US
• Richard M. Flynn · Mahtomedi, US

Key dates

• Filing date: May 25, 2006
• Grant date: Jul 13, 2010
• Expiry date: Aug 27, 2028

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L2205/035
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A coating composition having (i) an aqueous dispersion of fluoropolymer particles comprising a non-melt processible polymer of tetrafluoroethylene, (ii) a fluorinated surfactant, (iii) a non-ionic non-fluorinated surfactant and (iv) a non-fluorinated polymer, wherein the fluorinated surfactant is selected from fluorinated carboxylic acids or salts thereof of the general formula (I):[Rf—O-L-COO−]iXi+  (I)wherein L represents a linear partially or fully fluorinated alkylene group or an aliphatic hydrocarbon group, Rf represents a linear partially or fully fluorinated aliphatic group or a linear partially or fully fluorinated aliphatic group interrupted with one or more oxygen atoms, Xi+ represents a cation having the valence i and i is 1, 2 or 3.