Liquid purification or separation – Processes – Preventing – decreasing – or delaying precipitation,...
Patent
1981-04-16
1982-04-13
Wyse, Thomas G.
Liquid purification or separation
Processes
Preventing, decreasing, or delaying precipitation,...
210698, 252180, C02F 512
Patent
active
043246648
ABSTRACT:
Method and composition for controlling the deposition of scale imparting precipitates on structural parts of a system exposed to an aqueous medium containing scale imparting precipitates, under scale imparting conditions, are disclosed. Specifically, these precipitates are either calcium carbonate, calcium sulfate, calcium phosphate or mixtures thereof. The method and composition are also efficacious in dispersing inorganic and organic matter, which may exist within a cooling system, boiler system, or the like. The composition comprises an acrylic acid/lower alkyl hydroxylated acrylate copolymer (I) which is administered to the system in combination with an ester of an aliphatic sulphodicarboxylic acid (II). Preferred esters include the dioctylester of sodium sulphosuccinic acid, the diisobutylester of sodium sulphosuccinic acid, the dihexylester of sodium sulphosuccinic acid, and the diamylester of sodium sulphosuccinic acid. The method comprises administering an effective amount of the combined treatment (I and II) to the aqueous system to be treated.
REFERENCES:
patent: 2028091 (1936-01-01), Jaeger
patent: 2176423 (1939-10-01), Jaeger
patent: 3035973 (1962-05-01), Klotz
patent: 3692685 (1972-09-01), Lamberti et al.
patent: 4029577 (1977-06-01), Godlewski et al.
Feuerstein Diane
Snyder William R.
Betz Laboratories Inc.
Peacock Bruce E.
Ricci Alexander D.
Wyse Thomas G.
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