Artificially patinated copper material

Details Artificially patinated copper material Artificially patinated copper material

1998-06-24

2000-05-16

Speer, Timothy M.

Stock material or miscellaneous articles

Structurally defined web or sheet

Discontinuous or differential coating, impregnation or bond

428208, 428328, 428336, 428461, 428469, 428698, B32B 300

Patent

active

060634804

ABSTRACT:
An artificially patinated copper plate in which a copper sulfide layer 2 is formed on the surface of a copper base plate 1 by sulfiding for coating the same, and the copper sulfide layer 2 having an artificially patinated layer 3 is formed distributed and bonded thereon by spraying a resin solution mixed with basic copper carbonate constituting the main component of natural patina. The percentage of the area occupied by the artificially patinated layer 3 on the copper sulfide layer 2 is most preferably 25% to 80% and the thickness of the copper sulfide layer 2 is most preferably 0.1 to 0.5 .mu.m.

REFERENCES:
patent: 5160381 (1992-11-01), Gervais
patent: 5376190 (1994-12-01), Hoveling
patent: 5858122 (1999-01-01), Tani et al.

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