Patent ID: 7087694
Filing Date: 2006-08-08
Classification: C08F,Y10T

Abstract:
1. Fluorinated cationic acrylic copolymers obtained by polymerizing a mixture of monomers comprising, by weight: (a) from 50 to 92% of one or more polyfluorinated monomers of general formula: in which: Rf represents a linear or branched chain perfluorinated radical containing 2 to 20 carbon atoms, preferably 4 to 16 carbon atoms, B represents a bivalent group bonded to O via a carbon atom which may comprise one or more atoms of oxygen, sulphur and/or nitrogen, one of the symbols R represents a hydrogen atom and the other a hydrogen atom or an alkyl radical containing 1 to 4 carbon atoms; (b) from 1 to 25% of one or more monomers of general formula: in which B′ represents a linear or branched alkylene radical containing 1 to 4 carbon atoms, R′ represents a hydrogen atom or an alkyl radical containing 1 to 4 carbon atoms, the symbols R (c) from 0 to 25% of a vinyl derivative of general formula: in which R″ can be an alkylcarboxylate or alkylether group containing 1 to 18 carbon atoms, preferably from 1 to 4 carbon atoms; (d) from 0.5 to 20% of a monomer of general formula: in which: R′ is as defined previously, B″ represents B′ as defined previously or a single bond, X represents an oxygen, nitrogen or sulfur atom, R (e) from 0 to 10% of any monomer other than the monomers of formulae (I), (II), (III) and (IV); said polymerization comprising: dissolving the monomers in a distillable organic solvent; then diluting the reaction mixture with water in the presence of an inorganic or organic acid in order to form a salt with the macromolecules.