Simulated patina for copper
AssigneeCrown-PN L.L.C.
InventorPercy Greenberg
Life of this patent
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Abstract
A process for imparting a simulated patina appearance to a copper substrate, and a substrate having that appearance. A colorant having the desired initial patina color tone is employed to produce a non-continuous layer of colorant on the surface of a copper substrate by roll coating. The appearance of patination of the desired tone is created by interspersed spots of colorant with the remaining portion of the substrate being exposed for natural patination. The interspersed spots of colorant may be produced by screen printing, by spattering, as by spraying, or by mechanical removal of colorant after application to the substrate surface, or a combination.
Claims9
A process for imparting a simulated patina appearance to a copper substrate comprising the steps of:
- selecting a colorant having the desired initial patina color tone;
- and
- producing a noncontinuous layer of said colorant on a surface of the copper substrate to provide the appearance of patination of the desired tone via interspersed spots of said colorant, the remaining portion of said substrate being exposed for natural patination, the step of producing comprising the step of roll coating said noncontinuous colorant layer on said copper substrate surface in a desired pattern.
Dependencies are inferred from the claim text.