Method for stabilizing aqueous systems

Details Method for stabilizing aqueous systems Method for stabilizing aqueous systems

C - Chemistry, Metallurgy

02

F

134/39

C02F 5/10 (2006.01) C02F 5/12 (2006.01) C08F 220/06 (2006.01)

Patent

CA 1336565

A process for stabilizing aqueous systems containing scale forming salts and inorganic particulates by adding to such systems an effective amount of selected low molecular weight water soluble polymers containing from about 10 to about 84 weight percent (meth)acrylic acid units, greater than 11 to less than about 40 weight percent acrylamido alkyl or aryl sulfonate units and from at least about 5 to about 50 weight percent of one or more units selected from vinyl esters, vinyl acetate and substituted acrylamides, is provided. The terpolymers and interpolymers used in the process provide improved phosphate, iron and zinc stabilization while maintaining their water solubility. Certain preferred polymers also exhibit a high degree of hydrolytic stability at high pH conditions.

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