| 摘要 |
An admixture suitable for use in inhibiting scale and corrosion in aqueous system comprises a water-soluble polymer, preferably having a weight average molecular weight of less than 25,000, as determined by low angle laser light scattering, and comprising an unsaturated carboxylic acid and an unsaturated sulfonic acid, or their salts, the weight ratio of carboxylic to sulfonic acid being in the range 1:20 to 20:1, and at least one water soluble polycarboxylate, phosphonate, phosphate, polyphosphate, metal salt or sulfonates. Also in accordance with the invention, the formation of insoluble alluvial, metal oxide and metal hydroxide deposits in an aqueous system is inhibited by adding to the system at least 0.1 mg/l of a water-soluble polymer, preferably having a weight average molecular weight of less than 25,000, as determined by low angle laser light scattering, comprising an unsaturated carboxylic acid and an unsaturated sulfonic acid, or their salts, the weight ratio of carboxylic to sulfonic acid being in the range 1:20 to 20:1, and a phosphonate. |
