Process for preparing an aqueous dispersion of a quaternary...

C - Chemistry – Metallurgy – 08 – F

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C08F 220/18 (2006.01) C08F 2/04 (2006.01) C08F 2/06 (2006.01) C08F 2/10 (2006.01) C08F 220/56 (2006.01)

Patent

CA 2560287

A method of making an ion triggerable cationic polymer by solution copolymerizing one or more vinyl-functional cationic monomers, one or more water insoluble or hydrophobic vinyl monomers with alkyl side chains up to 4 carbons long, and, optionally, a minor amount of one ore more vinyl monomers with linear or branched alkyl groups longer than 4 carbons, alkyl hydroxy, polyoxyalkylene, or other functional groups. The solution polymerization is accomplished by free radical polymerization in a mixture of acetone and water.

L'invention concerne un procédé d'élaboration d'un polymère cationique à déclenchement ionique qui repose sur la copolymérisation d'une solution d'au moins un monomère cationique à fonction vinyle, d'au moins un monomère de vinyle hydrophobe ou insoluble dans l'eau doté de chaînes latérales d'alkyle d'au moins 4 carbones et, facultativement, d'une faible quantité d'au moins un monomère de vinyle pourvu de groupes alkyle ramifiés ou linéaires de plus de 4 carbones, d'alkyl hydroxy, de polyoxyalkylène ou d'autres groupes fonctionnels. La polymérisation de la solution est réalisée par une polymérisation radicale libre dans un mélange d'acétone et d'eau.

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