Abstract: The invention provides a method for the at least partial removal of one or more polymeric coating layers from a coated substrate having at least one coated surface. The method includes generating at least one reactive species in an ionized gas stream discharged at atmospheric pressure; and placing the coated surface in the ionized gas stream. The at least one reactive species reacts with the one or more polymeric coating layers such that one or more coating layers is at least partially removed from the coated surface of the substrate at atmospheric pressure.
Type:
Grant
Filed:
June 16, 2005
Date of Patent:
March 13, 2012
Assignee:
PPG Industries Ohio, Inc
Inventors:
James A. Claar, Jerome J. Cuomo, David A. Diehl, Christopher J. Oldham, Roger C. Sanwald, Truman F. Wilt, Peter J. Yancey
Abstract: The invention provides a novel coating composition which includes: (a) a polyester-based resin component, (b) an epoxy component, (c) a crosslinker component, (d) a catalyst component, and (e) a diluent component. The polyester-based resin component includes at least one phosphatized polyester resin; and the epoxy component includes at least one phosphatized epoxy resin. These coating compositions are particularly suitable as primers, and especially as primers for use used in conjunction with coating composition which include fluorocarbon polymers. Also provided is a method of providing a substrate with a multilayer coating system. This method includes: (a) applying at least one layer of the aforementioned novel primer onto a substrate; and (b) applying at least one layer of a second coating composition over the primed substrate of step (a).
Type:
Grant
Filed:
December 17, 1998
Date of Patent:
December 12, 2000
Assignee:
PPG Industries Ohio, Inc.
Inventors:
Padmanabhan Sundararaman, Jamel S. Richardson, Robert A. Montague, Trang D. Tran