Polyelectrolyte complexes and their preparation

C - Chemistry – Metallurgy – 08 – F

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C08F 8/44 (2006.01) C11D 3/37 (2006.01)

Patent

CA 2406651

The invention relates to polyelectrolyte complexes of cationic and anionic polymers, comprising (a) cationic condensates of (i) at least one amine and (ii) a cross-linking agent from the group of epihalohydrins, or bishalohydrins of diols, bishalohydrins of polyalkylene glycols, bishalohydrins of polytetrahydrofurans, alkylene dihalides, alkylene trihalides, bis-epoxides, tris-epoxides, tetra-epoxides, and/or mixtures of the above and/or quaternary cationic condensates of (i) and (ii) and (b) anionic compounds with at last three anionic groups and a loading ratio of anionic to cationic polymers of 0.01 to 20. The invention further relates to methods for the production of the polyelctrolyte complexes by means of mixing the cationic condensates (a) with anionic compounds (b).

La présente invention concerne des complexes de polyélectrolytes de polymères cationiques et anioniques, constitués (a) de condensats cationiques, qui sont composés (i) d'au moins une amine et (ii) d'un agent de réticulation, choisi dans le groupe formé par les épihalogènhydrines, les bishalogènhydrines de diols, les bishalogènhydrines de polyalkylèneglycols, les bishalogènhydrines de polytétrahydrofuranes, les dihalogénures d'alkylène, les trihalogénures d'alkylène, les bi-époxydes, les tri-époxydes, les tétra-époxydes et/ou des mélanges des composés mentionnés et/ou des condensats cationiques quaternaires de (i) et (ii), ainsi que (b) de composés anioniques, comprenant au moins trois groupes anioniques, avec un rapport de charge des polymères anioniques sur les polymères cationiques qui va de 0,01 à 20. La présente invention concerne également un procédé de production desdits complexes de polyélectrolytes, par mélange des condensats cationiques (a) avec des composés anioniques (b).

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