Polymer dispersions

C - Chemistry – Metallurgy – 08 – F

Patent

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Details

C08F 265/00 (2006.01) C04B 26/04 (2006.01) C08F 2/20 (2006.01) C09D 125/06 (2006.01) C09J 125/06 (2006.01)

Patent

CA 2362465

The invention relates to a polymer dispersion containing i) polymer particles which consist of units of ethylenically unsaturated monomers and are dispersed in an aqueous medium; ii) a water-soluble polymer polyelectrolyte which on a polymer skeleton carries a plurality of ionic groups having the same charging properties or groups which can be ionized such that they form such groups; and iii) an ionic tenside which carries an ionic group having the opposite charging properties of the polymer polyelectrolyte or a group which can be ionized such that it forms such a group. The polymer dispersion can be coagulated by simple dilution with water.

L'invention concerne une dispersion polymérique qui contient: (i) des particules de polymère dispersées dans un milieu aqueux, constituées d'unités de monomères éthyléniquement insaturés; (ii) un polyélectrolyte polymère hydrosoluble qui porte, le long d'un squelette polymère, une pluralité de groupes ioniques d'un caractère de charge unitaire ou de groupes pouvant être ionisés pour former de tels groupes; et iii) un tensioactif ionique qui porte un groupe ionique présentant un caractère de charge opposé au polyélectrolyte polymère, ou bien un groupe pouvant être ionisé pour former un tel groupe. La dispersion polymérique présentée peut être coagulée par simple dilution avec de l'eau.

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