Patent ID: 6100325
Filing Date: 2000-08-08
Classification: C08J,C08L,C09D,C09G,C11D

Abstract:
A dispersion, suitable for use as a coating or as an additive for detergent and polishing compositions of dispersions, resulting from an initial system formed by a (per)fluorinated polymer in polar solvent, comprising:0.1-30% by weight of a polytetrafluoroethylene or a copolymer of tetrafluoroethylene with other ethylenically unsaturated, totally or partially fluorinated, monomers;50-99% by weight of perfluoropolyethers having number average molecular weight from 250 to 5,000, or liquid perfluorocarbons and mixtures thereof, optionally containing heteroatoms selected from oxygen and nitrogen;0.01-5% by weight of surfactant selected from carboxylic acids with PFPE chain and nonionic surfactants having a perfluoroalkylic or perfluoropolyether chain with a number of oxyalkylenic repeating units lower than or equal to 6;polar solvent complement to 100% by weight;wherein said dispersion has a polar solvent/polymer weight ratio lower than that of said initial system containing the (per)fluoropolymer used to prepare the dispersion.