Electrodepositable coating composition comprising a polymer group-containing onium salt is prepared by atom transfer radical polymerization

摘要

(57) A thermosetting composition comprising a resinous phase dispersed in [Abstract] aqueous medium, the resinous phase, of an initiator having a radically transferable group of the at least one component (a) functionality of at least two are reactive with non-gelling active hydrogen group-containing polymer containing in the presence, prepared by atom transfer radical polymerization, an onium salt group, an active hydrogen group (b) (a) containing a curing agent having groups, the composition is disclosed. Has a tailored polymer structure particularly well-defined and narrow molecular weight distribution, this thing, (prepared by atom transfer radical polymerization which is) thermosetting composition active hydrogen group-containing polymer of the thermosetting composition may provide dispersibility and crosslink density are enhanced object. How to electrocoating a conductive substrate using a heat-curable composition of the present invention, the substrate and coated by this method are also provided.