Stable, aqueous, colloidal dispersions of copolymers of the tetrafluorethylene/ethylene type and a process for their preparation

摘要

Stable aqueous, colloidal dispersions, having a high shear stability, of copolymers of tetrafluoroethylene and ethylene, which may also contain at least one further comonomer, are described. Such dispersions are prepared in the presence of a mixture of perfluorooctanoic acid and perfluorononanoic or perfluorodecanoic acids or salts thereof.