Patent ID: 7000313

Claim:
A process for forming metallized vias in a substrate comprising the following steps: (I) electrophoretically applying to an electroconductive substrate an electrodepositable coating composition onto all exposed surfaces of the substrate to form a conformal dielectric coating thereon, said electrodepositable coating composition comprising a resinous phase dispersed in an aqueous phase, said resinous phase comprising: (a) an ungelled, active hydrogen-containing, ionic group containing resin, and (b) a curing agent reactive with the active hydrogens of the resin (a), said resinous phase having a covalently bonded halogen content of at least 1 percent by weight based on total weight of resin solids present in said resinous phase, (II) ablating a surface of the conformal dielectric coating in a predetermined pattern to expose one or more section of the substrate; (III) applying a layer of metal to all surfaces to form metallized vias in the substrate.