Fluorinated products intended for oilproofing and waterproofing treatments of various materials and more particularly of fibrous materials

Abstract

The present invention relates to new fluorinated products resulting from the reaction of: (a) one molecule of one or more acids of the formula: HS - A (COOH).sub.n (I) and of (b) one to five molecules of one or more compounds possessing at least one ethylenic bond, at least one of these compounds corresponding to the general formula: ##STR1## and possibly neutralized or partially neutralized with an inorganic or organic base. In the formulae (I) and (II), A represents an aliphatic or aromatic hydrocarbon radical, n is a whole number from 1 to 4, Rf represents a straight or branched perfluorinated chain containing 1 to 20 carbon atoms, B represents bivalent, possibly branched, chaining and may comprise sulfur, oxygen or nitrogen atoms, one of the symbols R represents a hydrogen atom and the other a hydrogen atom or an alkyl group containing 1 to 4 carbon atoms. These products, applied to substrate materials, confer upon these an oilproofing and waterproofing effect as well as a resistance to aggressive products or solvents.

Dependencies are inferred from the claim text.