Patent ID: 8753615
Filing Date: 2014-06-17
Classification: A61K,A61Q,C08F

Abstract:
1. An ethylenic copolymer or its salts comprising, as % by weight with respect to the total weight of the polymer: a) from 65.5 to 95% by weight of monomer of formula (I), alone or as a mixture: in which: R Z is a divalent group chosen from —COO—, —CONH—, R m is 0 or 1, n is an integer between 65 and 700, R b) from 4 to 33.5% by weight of cationic monomer or one of its salts, alone or as a mixture, of formula (II): in which: R Z′ is a divalent group chosen from —COO—, —C(O)— and —CONH—, x′ is 0 or 1, R m′ is 0 or 1; X is chosen from: (a) a group of formula —N(R 6 )(R 7 ) with R 6 and R 7 representing, independently of one another, either (i) a hydrogen atom, or (ii) a saturated or unsaturated, optionally aromatic, linear, branched or cyclic, alkyl group comprising from 1 to 12 carbon atoms, or (iii) R 6 and R 7 form, with the nitrogen atom, a saturated or unsaturated, optionally aromatic, ring comprising 5, 6 or 7 ring members chosen from CH, CH 2 , O, N, NH, S or C(O); or else (b) X represents an —R 6 ′—N—R 7 ′— group, in which R 6 ′ and R 7 ′ form, with the nitrogen atom, a saturated or unsaturated, optionally aromatic, ring comprising 5, 6 or 7 ring members chosen from CH, CF 2 , O, N, NH, S or C(O); c) from 1 to 30% by weight of anionic monomer and/or its salts, alone or as a mixture, chosen from maleic anhydride and those of formula (III): R 1 , Z′, x′, R 2 ′ and m′ have the meanings given above for the formula (II); and