Aqueous system containing a synergistic phosphonate scale contro

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

1995-10-06

1998-01-20

Diamond, Alan

Compositions

Water-softening or purifying or scale-inhibiting agents

Plant or organic material containing

210700, 210701, 510247, C02F 510

Patent

active

057098140

ABSTRACT:
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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