Aqueous system containing a synergistic phosphonate scale...

Details Aqueous system containing a synergistic phosphonate scale... Aqueous system containing a synergistic phosphonate scale...

C - Chemistry, Metallurgy

02

F

C02F 5/10 (2006.01) C02F 5/00 (2006.01) C02F 5/14 (2006.01) C23F 14/02 (2006.01)

Patent

CA 2187121

An aqueous system containing scale forming salts including both calcium carbonate and calcium phosphate and characterized by high pH and high calcite concentrations which further contains a synergistic effective amount of a combination comprising (A) a polyether polyamino methylene phosphonate, (B) a terpolymer comprising the monomers of acrylic acid, sulfophenomethallyl ether and maleic acid, and (C) a hydroxyphosphonoacetic acid, is disclosed. A method for inhibiting the formation, deposition and adherence of such scale forming salts in the aqueous system employing the synergistic combination is also provided.

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