Processes for imparting an electrostatic charge to organic powders to make them usable in powder coating applications and to form a durable coating of a resin on a substrate

摘要

A process for improving the electrostatic charge developed on a resin powder composition for electrostatic coating of solid objects and the method of application thereof. The resin powder comprises (i) a thermosetting or thermoplastic resin and (ii) an electrostatic property modifying agent (polyalkylene ether, polyalkylene glycol, polyethoxylated stearyl alcohol) incorporated in the resin or on the surface of the resin. The methods of application of the powder involves charging the powder by electrical induction/conduction and spraying the charged powder onto a grounded solid object to which it adheres prior to the thermal fusing to produce a permanent finish.