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    • 73. 发明授权
    • Process for preparing polyalkenylsuccinimides
    • 聚烯基琥珀酰亚胺的制备方法
    • US07091306B2
    • 2006-08-15
    • US10435432
    • 2003-05-09
    • Mohammed HeddadjWilliam R. Ruhe, Jr.Gilles P. Sinquin
    • Mohammed HeddadjWilliam R. Ruhe, Jr.Gilles P. Sinquin
    • C08G69/26C08G69/10C08G69/02
    • C08F8/46C08F8/32C08F110/10
    • The present invention relates to an improved process for preparing polyalkenylsuccinimides having a sediment level less than 0.1 vol % comprising the steps of: (a) preparing a polyalkenyl derivative of an unsaturated acidic reagent by (i) reacting a polyalkylene with an unsaturated acidic reagent in the absence of a strong acid until at least 25% of the polyalkylene is converted to a polyalkenyl derivative of an unsaturated acidic reagent; (ii) continuing the reaction with an excess of the unsaturated acidic reagent in the presence of a strong acid to convert at least some of the unreacted polyalkylene to additional polyalkenyl derivative of an unsaturated acidic reagent; and (iii) removing the unreacted unsaturated acidic reagent; (b) reacting the unfiltered product of step (a) with a polyamine having at least one basic nitrogen atom; (c) diluting the product of step (b); and (d) subsequently filtering the polyalkenylsuccinimide product.
    • 本发明涉及一种制备沉降量低于0.1体积%的聚链烯基琥珀酰亚胺的改进方法,包括以下步骤:(a)通过(i)使聚亚烷基与不饱和酸性试剂反应,制备不饱和酸性试剂的聚链烯基衍生物 直到至少25%的聚亚烷基转化为不饱和酸性试剂的聚链烯基衍生物,不存在强酸; (ii)在强酸存在下,用过量的不饱和酸性试剂继续反应,将至少一些未反应的聚亚烷基转化成不饱和酸性试剂的另外的聚链烯基衍生物; 和(iii)除去未反应的不饱和酸性试剂; (b)使步骤(a)的未过滤的产物与具有至少一个碱性氮原子的多胺反应; (c)稀释步骤(b)的产物; 和(d)随后过滤聚烯基琥珀酰亚胺产物。