Fluorochemical water- and oil-repellant treating compositions

Claim 1

A process for providing a fibrous substrate with water- and oil-repellency, stain resistance and dry soil resistance comprising the steps of (a) contacting said fibrous substrate which is a textile fiber or filament, or a finished or fabricated fibrous article, with an aqueous treating solution comprising a) 0.3 to 30% by weight of a water soluble or dispersible fluoroaliphatic radical-containing poly(oxyalkylene) compound, or a composition comprising a mixture or such poly(oxyalkylene) compounds having one or more monovalent fluoroaliphatic radicals and one or more poly(oxyalkylene) moieties, said fluoroaliphatic radicals and poly(oxyalkylene) moieties being bonded together by hetero atom-containing groups or organic linking groups or combinations of such groups; b) 0.3 to 30% by weight of solid, non-tacky, water-soluble or water dispersible anti-soiling agent which is a brittle polymeric resin, colloidal alumina or colloidal silica and which, upon drying of the composition at ambient temperature, is capable of rendering the substrate non-tacky and resistant to soiling; and c) water, with the proviso that the ratio of component (a) to component (b) be 1:20 to 20:1. by spraying, dipping, coating, padding, foam or roller coating application or a combination thereof and (b) allowing the treated substrate to dry at ambient temperature.