3m Innovative Properties Company

Arnd Kurz

Klaus Hintzer

Tilman C Zipplies

Harald Kaspar

Peter Bissinger

Kai Helmut Lochhaas

Michael C Dadalas

Helmut Traunspurger

Florian Daniel Jochum

An aqueous dispersion comprising a tetrafluoroethylene core-shell polymer and at least one surfactant corresponding to the general formula R0-[CHCH0][R0]-Rwherein Rrepresents a linear or branched aliphatic hydrocarbon group having at least 8 carbon atoms, preferably 8 to 18 carbon atoms, R2 represents an alkylene having 3 carbon atoms, R3 represents hydrogen, a C1-C3 alkyl group, or a C1-C3 hydroxyalkyl group, n has a value of 0 to 40, m has a value of 0 to 40 and the sum of n+m is at least 2, wherein the dispersion is free of fluorinated emulsifiers or contains them in an amount of less than 50 ppm based on the weight of the dispersion and wherein the core-shell polymer contains an outer shell of tetrafluoroethylene homopolymer. Further provided are methods of making the dispersions, coating compositions comprising the dispersions and article coated by the coating composition.

Tetrafluoroethylene polymer dispersions stabilized with aliphatic non-ionic surfactants

Growing community of inventors

Neuss, Germany

Arnd Kurz