| 摘要 |
PROBLEM TO BE SOLVED: To prevent the formation of an insoluble salt and scale due to the combination between water soluble polymers and calcium ions in a cooling water system and boiler water system by incorporating a polymerizable unsaturated carboxylic acid-hydroxyallyloxypropane sulfonic acid copolymer and polymaleic acid or polyacrylic acid. SOLUTION: A scale inhibitor agent contains a polymerizable unsaturated carboxylic acid-hydroxyallyloxypropane sulfonic acid copolymer and polymaleic acid or polyacrylic acid. A polymerizable unsaturated carboxylic acid in the copolymer is not restricted if it can be copolymerized with hydroxyallyloxypropane sulfonic acid. For example, acrylic acid, methacrylic acid, maleic acid, fumalic acid are named. Among them, acrylic acid, having a good copolymerizability with hydroxyallyloxypropane sulfonic acid and a large scale inhibiting effect, is used especially appropriately. |
