Method and composition for treating aqueous mediums

Details Method and composition for treating aqueous mediums Method and composition for treating aqueous mediums

C - Chemistry, Metallurgy

02

F

134/39

C02F 5/14 (2006.01)

Patent

CA 1160136

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 matter, which may exist within a cooling system, boiler system, or the like. The composition com- prises an acrylic acid/lower alkyl hydroxylated acrylate copolymer (I) which is administered to the system in combination with a telomeric phosphinocarboxylic acid compound (II) of the formula Image or salts thereof, wherein Y" is hydrogen or a methyl or ethyl residue; Y is hydrogen, a straight or branched alkyl residue having from 1-18 carbon atoms, a cycloalkyl residue having from 5-12 carbon atoms, an aryl residue, an aralkyl residue, a residue of the formula: Image

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