Method for treating aqueous mediums

Details Method for treating aqueous mediums Method for treating aqueous mediums

1981-04-01

1983-02-22

Castel, Benoit

Liquid purification or separation

Processes

Preventing, decreasing, or delaying precipitation,...

210698, 252180, C02F 510

Patent

active

043747337

ABSTRACT:
Methods are disclosed for inhibiting scale formation and dispersing solids particulate matter in aqueous mediums. An acrylic acid/lower alkyl hydroxy acrylate copolymer (I) in combination with a water soluble polymeric material (II) having the formula ##STR1## wherein a or b may be zero or a positive integer, with the proviso that a+b>1; and wherein d is H or HSO.sub.3, are disclosed. The method comprises administering from about 0.1-500 parts (based upon 1 million parts of the aqueous medium treated) of the combined treatment (I and II) to the particular aqueous system for which treatment is desired.

REFERENCES:
patent: 3715307 (1973-02-01), Johnson et al.
patent: 4029577 (1977-06-01), Godlewski et al.
patent: 4048066 (1977-09-01), Cuisia et al.
patent: 4223120 (1980-09-01), Kurowsky
patent: 4288327 (1981-09-01), Godlewski et al.

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