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    • 61. 发明授权
    • Electrodepositable coating compositions comprising amine salt group-containing polymers prepared by atom transfer radical polymerization
    • 包含通过原子转移自由基聚合制备的含胺盐基聚合物的电沉积涂料组合物
    • US06355729B1
    • 2002-03-12
    • US09375018
    • 1999-08-16
    • Gregory J. McCollumLinda K. AndersonSimion Coca
    • Gregory J. McCollumLinda K. AndersonSimion Coca
    • C08F892
    • C09D5/4488C08L57/12C08L2666/02
    • Disclosed are thermosetting compositions which are comprised of a resinous phase dispersed in an aqueous medium, the resinous phase comprising (a) an ungelled active hydrogen group-containing polymer which contains amine salt groups, the polymer having been prepared by atom transfer radical polymerization in the presence of an initiator having at least one radically transferable group, and (b) a curing agent having at least two functional groups which are reactive with the active hydrogen groups of (a). The active hydrogen group-containing polymers of the thermosetting compositions, which are prepared by atom transfer radical polymerization, have narrow molecular weight distributions and well-defined, specifically tailored polymer architecture which can provide enhanced crosslink density and dispersibility of the thermosetting compositions. Also disclosed is a method of electrocoating a conductive substrate using the thermosetting compositions of the invention, and a substrate coated by this method.
    • 公开了由分散在水性介质中的树脂相组成的热固性组合物,所述树脂相包含(a)含有胺盐基团的未凝胶化含活性氢基团的聚合物,所述聚合物通过原子转移自由基聚合制备 存在具有至少一个可自由基转移基团的引发剂,和(b)具有至少两个与(a)的活性氢基团反应的官能团的固化剂。 通过原子转移自由基聚合制备的热固性组合物的含活性氢基团的聚合物具有窄的分子量分布和明确定义的专门定制的聚合物结构,其可以提供增强的热固性组合物的交联密度和分散性。 还公开了使用本发明的热固性组合物和通过该方法涂覆的基材的电导涂层的方法。