Abstract: In order to improve the barrier effect to fats of the cationic fluorinated copolymers of Patent EP 542,598 resulting from the copolymerization of at least one polyfluorinated monomer, of at least one aminoalkyl (meth)acrylate and of at least one vinyl monomer (in particular vinyl acetate), they are subjected to the action of hydrogen peroxide during the salification stage or after the latter.

Abstract: The invention relates to fluoro copolymers containing hydroxyl groups and amino groups in salified or quaternized form.With such a copolymer and a polyisocyanate, an aqueous composition which is useful for the oleophobic and hydrophobic treatment of building materials may be prepared.

Abstract: Fluorine-containing copolymers for use in coating substrates or for incorporation thereinto in order to impart water- and oil-repellent properties thereto are provided, starting from the following monomers:a) a polyfluorinated alcohol ester with a monocarboxylic alkene acid;b) an amino-alcohol ester with a monocarboxylic alkene acid;c) vinyl monomer having an alkylcarboxylate or alkylether group.

Abstract: The invention relates to fluorinated acrylic monomers of the formula: ##STR1## in which A and W denote divalent linkages, R is a hydrogen atom or a methyl radical, R.sub.F is a perfluoroalkyl radical and Q denotes an oxygen or sulphur atom or the group--NR'--, where R' denotes a hydrogen atom or an alkyl radical. Homo- or copolymers derived from these monomers are useful for the water or oil-repellent treatment of various substrates, particularly leather.

Abstract: The invention relates to fluorinated acrylic monomers of the formula: ##STR1## in which A and W denote divalent linkages, R is a hydrogen atom or a methyl radical, R.sub.F is a perfluoroalkyl radical and Q denotes an oxygen or sulphur atom or the group --NR'--, where R' denotes a hydrogen atom or an alkyl radical. Homo-or copolymers derived from these monomers are useful for the water or oil-repellent treatment of various substrates, particularly leather.

Abstract: The invention relates to fluoroacrylic monomers of formula: ##STR1## in which R.sub.f denotes a perfluoroalkyl radical, R is hydrogen or a methyl radical, R' denotes an alkyl or cycloalkyl radical, or --NR'-- denotes a 1, 4-piperazinylene radical, W and Z denote divalent connecting groups, Q is oxygen or sulphur or an --NR"-- group, R" denoting hydrogen an alkyl radical, and A is a C.sub.2 or C.sub.3 alkylene group. The polymers (homo- or copolymers) derived from these monomers may be used for the water-repellency and oil-repellency treatment of various substrates, particularly leather.