Aqueous system containing a synergistic combination for scale co

Details Aqueous system containing a synergistic combination for scale co Aqueous system containing a synergistic combination for scale co

1996-09-24

1998-06-30

Yoon, Tae

Compositions

Water-softening or purifying or scale-inhibiting agents

Plant or organic material containing

252175, 210700, 524547, C02F 514, C02F 510

Patent

active

057729131

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, sulfophenoxymethallyl ether and maleic acid, (C) a hydroxyphosphonoacetic acid, and (D) a phosphonocarboxylic acid copolymer comprising the monomers of acrylic acid, telomer with (1-hydroxy-1-methylethyl) phosphinic acid monosodium salt, and 2-acrylamido 2 methylpropane sulfonic 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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