Method of inhibiting scaling in aqueous systems with low...

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

C - Chemistry, Metallurgy

02

F

134/39

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

Patent

CA 1217691

- i - PATENT APPLICATION of WILLIAM MATHIS HANN and JOHN NATOLI for METHOD OF INHIBITING SCALING IN AQUEOUS SYSTEMS WITH LOW MOLECULAR WEIGHT COPOLYMERS D.N. 82-54 MSA/ets Abstract of the Disclosure 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 calcium phosphate and calcium carbonate scale. 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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