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    • 89. 发明公开
    • Carboxylic-sulfonic-polyalkylene oxide polymers and their use as scale and corrosion inhibitors
    • Karbonsäure-Sulfonsäure-Polyalkylenoxid-Kopolymerisate und ihre Verwendung als Korrosions- und Kesselsteininhibitoren。
    • EP0184894A1
    • 1986-06-18
    • EP85306894.8
    • 1985-09-27
    • CALGON CORPORATION
    • Cha, Charles Y.Varsanik, Richard G.Chen, Shih-Ruey T.
    • C02F5/10C02F5/12C23F11/173C08F220/06C08F222/02
    • C02F5/12C02F5/10C23F11/173
    • A method of inhibiting corrosion and the formation and deposition of scale and iron oxide in aqueous systems comprises adding to the system at least 0.1 ppm of a water-soluble polymer having an intrinsic viscosity of 0.05 to 2.5 dl/g, prepared from:

      (a) 35 to 90% by weight of an unsaturated carboxylic acid or its salt; and
      (b) 5 to 40% by weight of an unsaturated sulfonic acid or its salt; and
      (c) 5 to 40% by weight of an unsaturated polyalkylene oxide compound.

      A novel water soluble polymer having an intrinsic viscosity of 0.05 to 2.5 dl/g is prepared from:

      (a) 35 to 90% by weight of an unsaturated carboxylic compound that is acrylic acid, methacrylic acid, maleic acid, itaconic acid, a salt of such an acid or a mixture of two or more such compounds;
      (b) 5 to 40% by weight of an unsaturated sulfonic compound that is 2-acrylamido-2-methylpropylsulfonic acid, 2-meth- acrylamido-2-methylpropylsulfonic acid, methallylsulfonic acid, allylsulfonic acid, vinylsulfonic acid, styrenesulfonic acid; a salt of such an acid or a mixture ot two or more such compounds; and
      (c) 5 to 40% by weight of an unsaturated polyalkylene oxide compound.
    • 抑制水性体系中的腐蚀和氧化铁垢的形成和沉积的方法包括向该体系中加入至少0.1ppm的特性粘度为0.05至2.5dl / g的水溶性聚合物,其由以下制备:(a )35〜90重量%的不饱和羧酸或其盐; 和(b)5〜40重量%的不饱和磺酸或其盐; 和(c)5-40重量%的不饱和聚环氧烷化合物。 特性粘度为0.05〜2.5dl / g的新型水溶性聚合物由以下制备:(a)35〜90重量%的不饱和羧酸化合物,其为丙烯酸,甲基丙烯酸,马来酸,衣康酸,盐 的这种酸或两种或更多种这样的化合物的混合物; (b)5-40重量%的2-丙烯酰胺基-2-甲基丙磺酸的不饱和磺酸化合物,2-甲基丙烯酰胺基-2-甲基丙基磺酸,甲代烯丙基磺酸,烯丙基磺酸,乙烯基磺酸,苯乙烯磺酸; 这种酸的盐或两种或更多种这样的化合物的混合物; 和(c)5-40重量%的不饱和聚环氧烷化合物。