Composition comprising a copolymer containing at least two ionically charged blocks and a compound of opposite ionic charge

摘要

aqueous composition associating at least one block copolymer (A) comprising, at a pH of the composition given, pHo, between 1 and 14, at least two blocks bearing at least two ionic charges of the same kind and at least a block that does not carry ionic charge, with at least one compound (B) carrying one or more ionic charges of opposite charge to said blocks in the same pH conditions; wherein the compound (B) selected from ions bearing at least two ionic charges, the surfactants comprising at least one ionic charge, oligomers and / or polymers comprising at least two ionic charges and / or mineral particles carrying the least two ionic charges; and wherein said compound B chosen pHo between: the cationic compounds when blocks bearing at least two ionic charges of the block copolymer (A) are anionic, anionic compounds when blocks bearing at least two ionic charges of the block copolymer (a) are cationic, the content block copolymer (a) being such that the viscosity of the composition is greater than three times, preferably greater than or equal to ten times that of an aqueous solution of block copolymer (a) and of an aqueous solution of compound (B), PHO and under the same conditions of temperature and concentration.