METHOD FOR SUBSTRATE COATING BY FLUOROPOLYMER DISPERSION Russian patent published in 2009 - IPC B05D7/02 B05D5/08 

FIELD: technological processes.

SUBSTANCE: invention may be used for coating of kitchen ware, impregnation of nonwoven or woven materials, for instance glass tissue, for coating of paper or polymer substrates. In method for coating by fluoropolymer dispersion, substrate surface is characterised by layer of fluoropolymer. In this method water dispersion is used, which contains the following components: particles of fluoropolymer processed in melt in amount from 30 to 70 wt %. Moreover, fluoridised surfactant is used in amount of not more than 250 ppm, based on content of hard fluoropolymer in specified water dispersion; and nonionic surfactant containing ethoxylated aliphatic alcohol, in amount from 2 to 15 wt %, based on common content of dry substance in specified water dispersion. Specified water dispersion does not contain or practically does not contain nonionic surfactants, containing aromatic groups. In order to prepare tiling composition, specified water dispersion may optionally be diluted and/or mixed with additional components. Then specified tiling composition may be applied at least on part of surface to produce fluoropolymer layer.

EFFECT: production of tiling composition with proper wetting ability and film-forming properties.

7 cl, 2 ex