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    • 5. 发明授权
    • Corrosion protection in cooling water systems
    • 冷却水系统的防腐蚀
    • US4547540A
    • 1985-10-15
    • US514422
    • 1983-07-18
    • Alan M. Yeoman
    • Alan M. Yeoman
    • C23F11/10C08K5/16C09K3/00C23F11/00
    • C23F11/10
    • A composition and method for inhibiting ferrous metal corrosion in aqueous systems consisting essentially of (A) a copolymer of styrene sulfonic acid and maleic anhydride or maleic acid, and (B), water-soluble salts of said copolymer; and (C) a blend of two phosphonates consisting of (1) 2-phosphonobutane-1,2,4-tricarboxylic acid and (2) one member of the group consisting of (a) aminotrimethylene phosphonic acid and (b) hydroxy ethylidene diphosphonic acid. A preferred dosage, based on the active ingredient, is 7.5 ppm of styrene sulfonic acid/maleic anhydride copolymer and 6.0 ppm of phosphonate (1) and either 3.5 ppm of phosphonate (2a) of 4.2 ppm of phosphonate (2b). This relationship can be maintained during a total dosage of 0.01 to 500 ppm.
    • 一种用于在含水体系中抑制黑色金属腐蚀的组合物和方法,其基本上由(A)苯乙烯磺酸和马来酸酐或马来酸的共聚物组成,和(B)所述共聚物的水溶性盐; 和(C)由(1)2-膦酰基丁烷-1,2,4-三羧酸组成的两种膦酸酯和(2)由(a)氨基三亚甲基膦酸和(b)羟基亚乙基二膦酸 酸。 基于活性成分的优选剂量是苯乙烯磺酸/马来酸酐共聚物7.5ppm,膦酸盐(1)6.0ppm,膦酸盐(2b)的3.5ppm膦酸盐(2a))为4.2ppm。 在0.01至500ppm的总剂量期间可以维持该关系。