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Ecolab Patents Scale Control Agent

Published July 2, 2014
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US Patent No. 8,729,006 B2; Ecolab USA has been awarded a patent for its scale control composition for use in an alkaline environment. It is comprised of sodium carboxymethyl cellulose, a polymaleic acid polymer, copolymer, terpolymer, or combination of the same; a phosphonate; and a chelant. The ratio of the sodium carboxymethyl cellulose and polymer, copolymer, terpolymer, or combination of the same is between about 1:5 and about 5:1 by weight percent. The sodium carboxyethyl cellulose has a molecular weight between about 250,000 and about 700,000.

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