SCALE INHIBITOR AND SCALE INHIBITORY METHOD FOR BARIUM SULFATE IN WATER SYSTEM

摘要

PROBLEM TO BE SOLVED: To provide a scale inhibitor and an inhibitory method for efficiently suppressing barium sulfate scale generated in an industrial water system especially in the pulp and paper industry.;SOLUTION: The barium sulfate scale inhibitor comprises monomers including maleic acid, acrylic acid and 2-acrylamide-2-methylpropanesulfonic acid in a water system of ≥PH2 preferably of PH2 to PH7, wherein the ratio of maleic acid to acrylic acid is 10:2 to 10:15 and a copolymer comprising 3-20 mol% 2-acrylamide-2-methylpropanesulfonic acid based on total monomers and/or a water-soluble salt of the copolymer is included.;COPYRIGHT: (C)2005,JPO&NCIPI