"SYNERGISTIC SCALE AND CORROSION INHIBITINGADMIXTURES CONTAINING CARBOXYLIC ACID/SULFONIC ACID POLYMERS"Abstract of the DisclosureThe instant invention is directed to anadmixture, and its use in inhibiting scale andcorrosion in aqueous systems, comprising:(a) a water-soluble polymer having aweight average molecular weight ofless than 25,000, as determined bylow angle laser light scattering,comprising an unsaturatedcarboxylic acid and an unsaturatedsulfonic acid, or their salts,having a ratio of 1:20 to 20:1, and(b) at least one compound selected fromthe group consisting ofwater-soluble polycarboxylates,phosphonates, phosphates,polyphosphates, metal salts andsulfonates.Abstract (Continued):The instant invention is also directed to amethod of inhibiting the formation of insolublealluvial, metal oxide and metal hydroxide depositsin an aqueous system, comprising adding to thesystem at least 0.1 mg/l of a water-soluble polymerhaving a weight average molecular weight of lessthan 25,000, as determined by low angle laser lightscattering, comprising an unsaturated carboxylicacid and an unsaturated sulfonic acid, or theirsalts, having a ratio of 1:20 to 20:1 and aphosphonate.
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