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    • 36. 发明公开
    • Phosphate ester pigment dispersant
    • Phosphat酯颜料的Dispergiermittel。
    • EP0360757A2
    • 1990-03-28
    • EP89810702.4
    • 1989-09-19
    • SUN CHEMICAL CORPORATION
    • Latosky, Joseph Alec
    • C09B67/46B01F17/14
    • B01F17/0064C09B67/0086
    • An aqueous pigment dispersion containing as the dispersing agent a phosphate ester salt having the general formula:
      wherein: R and R′ are the same or different linear or branched alkyl groups of 2 to 12 carbon atoms;
      k and l are the same or different integers having a value of 1 or 2;
      x and y are the same or different integers having values of greater than 1 but less than 13; and,
      M is a cation selected from the group consisting of potassium, sodium and ammonium. The dispersing agent is especially useful to disperse azo type pigments. The resulting pigment dispersion exhibits improved stability.
    • 一种水性颜料分散体,含有具有以下通式的磷酸酯盐作为分散剂:其中:R和R min是相同或不同的具有2至12个碳原子的直链或支链烷基; k和l是相同或不同的具有值1或2的整数; x和y是具有大于1但小于13的相同或不同的整数; 和M是选自钾,钠和铵的阳离子。 分散剂特别适用于分散偶氮型颜料。 得到的颜料分散体表现出改进的稳定性。