Copolymers as scale inhibitors

Details Copolymers as scale inhibitors Copolymers as scale inhibitors

C - Chemistry, Metallurgy

08

F

C08F 220/00 (2006.01)

Patent

CA 2648696

The present invention relates to copolymers which are obtainable from the free-radical copolymerization of at least (a) a monoethylenically unsaturated carboxylic acid having from 3 to 6 carbon atoms or its anhydride with (b) a reaction mixture comprising a component of the general structural formula (I) where R1, R2, R3, R4 are each independently H or C1-C4-alkyl, n and m are each independently an integer from 1 to 100 and R5 is H or methyl, to a process for preparing the inventive polymer and to its use as a scale inhibitor.

La présente invention concerne des copolymères qui peuvent être obtenus par copolymérisation radicalaire d'au moins (a) un acide carboxylique monoéthyléniquement insaturé ayant de 3 à 6 atomes de carbone ou de son anhydride avec (b) un mélange réactionnel contenant un composant de formule générale (I), dans laquelle R1, R2, R3, R4 sont indépendamment les uns des autres un atome d'hydrogène ou un alkyle C1 à C4, n et m sont indépendamment l'un de l'autre un nombre entier valant de 1 à 100, et R5 est un atome d'hydrogène ou un groupe méthyle, ainsi qu'un procédé de production du polymère de l'invention et son utilisation comme inhibiteur de tartre.

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