Polymer dispersion and process for preparing a polymer...

C - Chemistry – Metallurgy – 08 – G

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C08G 73/02 (2006.01) C08F 283/00 (2006.01) C08F 290/06 (2006.01) D21H 17/45 (2006.01)

Patent

CA 2594175

The invention relates to a process for preparing an aqueous polymer dispersion comprising reacting, in the presence of a polymeric cationic co-stabiliser (A), one or more monomers (m), and a polymer (B) of a monomer mixture comprising at least one monomer (x) having a primary, secondary or tertiary amine or amide group and at least one olefinic unsaturation, and, at least one cationic monomer (y) having at least one olefinic unsaturation. The invention also relates to a polymer dispersion, a process for preparing a polymeric stabiliser (C), a polymeric stabiliser (C) and a process for producing paper.

La présente invention concerne un procédé de préparation d'une suspension aqueuse de polymère qui comprend la réaction, en présence d'un agent co-stabilisant cationique polymère (A), d'un ou de plusieurs monomères (m), et d'un polymère (B) obtenu à partir d'un mélange de monomères comprenant au moins un monomère (x) portant un groupement amide ou amine primaire, secondaire ou tertiaire, et au moins une insaturation oléfinique, et au moins un monomère cationique (y) portant au moins une insaturation oléfinique. La présente invention concerne également une suspension de polymère, un procédé de préparation d'un agent stabilisant polymère (C), un agent stabilisant polymère (C) et un procédé de fabrication de papier.

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