Novel fluorinated copolymers, their use for coating and impregnating substrates, and resulting treated substrates

• Main Authors: Tembou N'Zudie, Denis, Legrand, Yvon, Juhue, Didier
• Format: Patent
• Language: English
• Published: 12.02.2004

This cationic fluorocopolymer is obtained from a composition comprising, per 100 parts by weight (pw): 5 to 92 pw of at least one polyfluorinated monomer (I); 0.10 to 25 pw of at least one monomer (II), (III) or (IV) ; 0 to 20 pw of at least one anionic monomer or monomer potentially anionic by varying the pH; 0 to 25 pw of at least one vinyl monomer (V) : CH 2 CHR 11 ; 0 to 60 pw of at least one monomer (VI); 0 to 10 pw of at least one monomer capable of causing postcrosslinking of the fluorocopolymer during or after the said fluorocopolymer has formed a coating on a substrate; and 0 to 25 parts by weight of at least one monomer (VII): 1 R 1 ,R 2 H or one of them H and the other C 1 -C 4 alkyl; A=divalent linking group linked to 0 by a carbon atom and possibly comprising one or more oxygen and/or sulphur and/or nitrogen atoms; R f C 2 -C 20 perfluorinated radical with a straight or branched chain; R, R, Rs, R 1 H or -CH 3 ; R 4 , R 5 , R 7 , R 9 , R 10 H, C 1 -C 18 is alkyl, benzyl or hydroxyethyl; X 1 , X 2 .=monovalent anion; R 11 C 1 -C 18 alkyl carboxylate, alkyl ether or alkyl; m=0 or 1; R 13 C 1 -C 6 alkylene possibly substituted with at least one halogen; m=0 or an integer from 1 to 11, limits inclusive; R 14 C 1 -C 32 alkyl possibly substituted with at least one halogen, or cycloalkyl possibly substituted with at least one halogen; R 15 H or C 1 -C 4 alkyl; A 2 C 1 -C 4 linear or branched alkylene; R 16 , R 17 H, C 1 -C 18 linear or branched alkyl, or hydroxyethyl or benzyl, or R 16 and R 17 together with the nitrogen atom to which they are linked form a morpholino, piperidino or pyrrolidinyl radical.