Calcium carbonate antiprecipitating agents

Details Calcium carbonate antiprecipitating agents Calcium carbonate antiprecipitating agents

C - Chemistry, Metallurgy

02

F

C02F 5/12 (2006.01)

Patent

CA 2093300

ABSTRACT OF THE INVENTION A method for inhibiting or preventing the precipitation of calcium carbonate in aqueous systems containing at least 5 ppm of magnesium ions comprising adding to the system, in an amount effective to inhibit the precipitation of calcium carbonate, a water-soluble copolymer having a polymer chain structure which comprises monomeric units of t-butyl acrylamide and units having the following formula: Image wherein R is of the class consisting of H and CH3; or its water-soluble salts.

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