Scale inhibitor for cooling water and scale prevention method for cooling water

摘要

IronManganeseA coolant inhibitor for cooling water of a cooling water system containing one or more selected from aluminumCopolymer units comprising structural units derived from acrylic acid and 2-acrylamido-2-methylpropane sulfonic acid and their saltsAnd structural units derived from acrylic acid and copolymers containing structural units derived from 2-hydroxy-3-allyloxypropane sulfonic acid and their saltsComponent (a) which is one or more compounds selected fromEthylenediaminetetraacetic acid and salt thereof3-hydroxy-22 - sodium and sodium salt[(phosphomethyl) imino] bis (6)1 - hexanediyl nitrolobismethylene) tetrakis phosphonic acid and its saltsAnd 1-hydroxyethane1 - diphosphonate and the component (b) which is one or more compounds selected from that saltScale inhibitor for cooling water.