Method of inhibiting scale
AssigneeChemed Corporation
InventorsDionisio Guerrero Cuisia, Chih Ming Hwa
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Abstract
The invention disclosed relates to a method for using a new improved composition for inhibiting or preventing accumulation of scale or the like on heating surfaces in an aqueous system. The present composition includes (A) copolymers of styrene sulfonic acid with acrylic or methacrylic acid, and their water-soluble salts; or (B) mixture of polystyrene sulfonic acid with polyacrylic or polymethacrylic acid, and their water-soluble salts.
Claims9
A method for inhibiting deposits of scale, sludge, and other foulants in aqueous systems, said method consisting essentially of adding to the said systems 0.01 to 500 ppm of a composition selected from the group consisting of (A) water-soluble copolymers of styrene sulfonic acid with another polymerizable monoethylenic compound, and their water-soluble salts or (B) mixture of polystyrene sulfonic acid with an acrylic polymer whose polymer chain structure comprises units having the following formula:
- ##STR2## wherein R.sub.1 is selected from the group consisting of H or CH.sub.3 and R.sub.2 is selected from the group consisting of H or COOH, and their water-soluble salts.
Dependencies are inferred from the claim text.