FLUOROPOLYMER DISPERSION, NOT CONTAINING OR CONTAINING SMALL QUANTITY OF LOW-MOLECULAR FLUORINATED SURFACE ACTIVE SUBSTANCE Russian patent published in 2009 - IPC C08F114/26 C08F14/18 C08F6/16 C08L27/18 C08L27/12 C08F2/26 C08F2/30 

FIELD: chemistry.

SUBSTANCE: description is given of a fluoropolymer-containing dispersion system, in which particles of fluorine-containing polymer with average size from 10 to 400 nm are dispersed in water. The dispersion system contains 35-70 wt % solid substance. The dispersion system does not contain fluorinated surface active substance with molecular weight less than 1000 g/mol or contains the given fluorinated surface active substance with molecular weight less than 1000 g/mol in quantity of not more than 0.05 wt % of the total weight of solid substance in the dispersion system. The dispersion system also contains non-ionic non-fluorinated surface active substance or a mixture of different non-ionic non-fluorinated surface active substances and one or more non-fluorinated anionic surface active substances. The amount and nature of the non-ionic non-fluorinated surface active substances or the mixture of non-ionic non-fluorinated surface active substances is chosen in such a way that, the VTT value of the fluoropolymer-containing dispersion system is at least, 26°C and such that, fluoropolymer-containing dispersion system practically does not contain non-ionic surface active substances with aromatic groups. Description is also given of the method of producing fluoropolymer-containing dispersion system.

EFFECT: dispersion can be used for coating and impregnating a substrate.

11 cl, 19 ex, 1 tbl