C - Chemistry – Metallurgy – 02 – F
Patent
C - Chemistry, Metallurgy
02
F
134/39
C02F 5/10 (2006.01) C02F 5/12 (2006.01)
Patent
CA 1154346
Abstract of the Disclosure Method and composition for controlling the deposition of scale imparting precipitates on structural parts of a system ex- posed 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 com- bination with an ester of an aliphatic sulphodicarboxylic acid (II). Preferred esters include the dioctylester of sodium sulphosuccinic acid, the diisobutylester of sodium sullphosuccinic acid, the di- hexylester 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.
389526
Feuerstein Diane
Snyder William R.
Betzdearborn Inc.
Borden Ladner Gervais Llp
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