Coating processes – Direct application of electrical – magnetic – wave – or... – Electrostatic charge – field – or force utilized
Reexamination Certificate
2005-05-24
2005-05-24
Parker, Fred J. (Department: 1762)
Coating processes
Direct application of electrical, magnetic, wave, or...
Electrostatic charge, field, or force utilized
C427S485000, C427S421100, C427S282000, C427S430100, C501S014000, C501S017000
Reexamination Certificate
active
06896934
ABSTRACT:
The present invention provides a composition for use in forming an abrasion-resistant easy-to-clean coating on a substrate. The composition according to the invention includes a mixture of a fluorocarbon polymer component and an enamel-forming component. The enamel-forming component includes at least a first lead-free and cadmium-free glass frit. The first lead-free and cadmium-free glass frit includes from about 30% to about 50% P2O5, from about 15% to about 30% Al2O3, and from about 2% to about 40% X2O where X=Na and/or K. The present invention also provides a method of forming an abrasion-resistant easy-to-clean coating on a substrate. The method includes applying the composition according to the invention to a substrate and sintering the applied composition to fuse an abrasion-resistant easy-to-clean coating to the substrate. The method can be used to apply the composition to a variety of substrate materials such as metals, glass, ceramics, and stone, using a variety of application techniques such as wet spraying, screen printing, electrophoresis, dry electrostatic deposition, wet dipping, and flow coating.
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Aronica Alain
Caisse Remy
Coutouly David
Macaya Damian
Ferro France - S.A.R.L.
Parker Fred J.
Rankin, Hill Porter & Clark LLP
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