Highly fluorinated polymers

US9938403B2 · kind B2 · utility

Assignee

• 3M INNOVATIVE PROPERTIES COMPANY · US

Inventors

• Klaus Hintzer · Woodbury, US
• Harald Kaspar · Altötting, DE
• Herbert Koenigsmann · Altötting, DE
• Helmut Traunspurger · Julbach, DE
• Tilman C. Zipplies · Burghausen, DE

Key dates

• Filing date: Jan 11, 2016
• Grant date: Apr 10, 2018
• Expiry date: Jan 11, 2036

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F214/262
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A method of making a highly fluorinated polymers and resulting aqueous mixtures. The method comprising polymerizing one or more perfluorinated monomers in an aqueous emulsion polymerization in the presence of a polymerizable fluorinated emulsifier to form a perfluorinated polymer. The polymerizable fluorinated emulsifier has the formula X2C═CX(CF2)m(CH2)n[O—(CX2)p]q—[O—(CX2)r]s−[O—(CX2—CX2)]t—[(O)w—(CX2)u]v—[CH2]z—Y. The method also provides for isolating the highly fluorinated polymer and post-fluorinating the isolated highly fluorinated polymer.