A process for forming a multilayer composite coating on a substrate is
provided. The process includes forming an electrodeposition coating layer
on the substrate by electrodeposition of a curable electrodepositable
coating composition over at least a portion of the substrate. Optionally,
the coated substrate is heated to a temperature and for a time sufficient
to cure the electrodeposition coating layer. A basecoating layer is
formed on the electrodeposition coating layer by depositing an aqueous
curable basecoating composition directly onto at least a portion of the
electrodeposition coating layer. Optionally, the basecoating layer is
dehydrated. A top coating layer is formed on the basecoating layer by
depositing a curable top coating composition which is substantially
pigment-free directly onto at least a portion of the basecoating layer.
The top coating layer, the basecoating layer, and, optionally, the
electrodeposition coating layer are cured simultaneously.