Method of inhibiting scaling in aqueous systems with low molecul

Details Method of inhibiting scaling in aqueous systems with low molecul Method of inhibiting scaling in aqueous systems with low molecul

1984-09-24

1985-07-23

Hruskoci, Peter

Liquid purification or separation

Processes

Preventing, decreasing, or delaying precipitation,...

106308Q, 252180, 501148, C02F 510

Patent

active

045307660

ABSTRACT:
A method for inhibiting scale formation in aqueous systems using water-soluble, low molecular weight copolymers of unsaturated aliphatic carboxylic acids is provided. Copolymers formed from about 30 to about 70 weight percent acrylic acid and from about 70 to about 30 weight percent methacrylic acid, having a weight average molecular weight ranging from about 2000 to about 5000, are preferred for inhibiting the formation of common hardness ion salt scale such as calcium carbonate, calcium phosphate and barium sulfate. The copolymers are hydrolytically stable and can be used effectively in high temperature applications. The copolymers are also effective dispersants for suspended inorganic particulate materials, such as clay, in aqueous systems.

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