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    • 4. 发明专利
    • Method for producing powdery cement dispersing agent
    • 生产粉末水泥分散剂的方法
    • JP2005272216A
    • 2005-10-06
    • JP2004088473
    • 2004-03-25
    • Taiheiyo Cement Corp太平洋セメント株式会社
    • TSUKADA KAZUHISANAKANISHI HIROSHIMEIDO TAKESHIHABARA TOSHISUKE
    • C04B24/26C04B103/40C08F290/06
    • PROBLEM TO BE SOLVED: To provide a method for producing powdery cement dispersing agent having high flowability in itself with the suppression of the occurrence of lumps.
      SOLUTION: The method includes spray-drying an aqueous solution containing the following component A and immediately cooling the resultant powder while moving individually so that the temperature of the powder becomes ≤60°C. The component A contains 40-85 mol% component A1, 15-60 mol% component A2, and 0-5 mol% component A3 (where total of the component A1, A2, and A3 is 100 mol% ) and is a water-soluble vinyl copolymer having a number average molecular weight of 2,000-50,000. The component A1 is one or more kinds selected from olefin mono carboxylic acids and the salts, the component A2 is one or more kinds selected from alkoxy polyethylene glycol (meth)acrylates and (meth)allyl sulfonates, and the components A3 is one or more kinds selected from alkyl (meth)acrylates and hydroxyalkyl (meth)acrylates.
      COPYRIGHT: (C)2006,JPO&NCIPI
    • 待解决的问题:提供一种具有高流动性的粉末状水泥分散剂本身具有抑制块状发生的方法。 解决方案:该方法包括喷雾干燥含有以下组分A的水溶液,并立即冷却所得粉末,同时单独移动,使得粉末的温度变为≤60℃。 组分A含有40-85mol%组分A1,15-60mol%组分A2和0-5mol%组分A3(组分A1,A2和A3的总量为100mol%),并且是水 - 数均分子量为2,000〜5000的可溶性乙烯基共聚物。 组分A1是选自烯烃单羧酸和其盐中的一种或多种,​​组分A2是选自烷氧基聚乙二醇(甲基)丙烯酸酯和(甲基)烯丙基磺酸酯)中的一种或多种,​​组分A3是一种或多种 选自(甲基)丙烯酸烷基酯和(甲基)丙烯酸羟烷基酯的种类。 版权所有(C)2006,JPO&NCIPI