Decorative oxidation process and article

Details Decorative oxidation process and article Decorative oxidation process and article

1977-12-16

1981-01-27

Herbert, Jr., Thomas J.

Stock material or miscellaneous articles

Structurally defined web or sheet

Discontinuous or differential coating, impregnation or bond

148 614R, 427205, 428242, 428457, 428469, 428472, B32B 1504, B05D 136

Patent

active

042475899

ABSTRACT:
A process for making a decorative article is provided by selectively oxidizing at least one layer of oxidizable metal to produce color changes in the layer(s) and selectively terminating the oxidation of the metal to set the color in the layer(s) with the desired decorative effect. Preferably, the oxidizable metal is in the form of finely divided particles such as iron, copper or brass powder, which may be adhesively or cohesively secured to a substrate which is preferably porous. Oxidation may be carried out by wetting the metal with a corrosive liquid or humidity in an oxygen containing atmosphere, and the rate and extent of oxidation may be controlled mechanically by occlusive dressings and/or chemically by the use of catalysts. The resulting article exhibits predetermined color patterns characteristic of various stages of oxidation of the metal.

REFERENCES:
patent: 3765931 (1973-10-01), Kyri et al.
patent: 3926564 (1975-12-01), Giaever
patent: 3958070 (1976-05-01), Schintlmeister et al.
patent: 4072771 (1978-02-01), Grier
patent: 4105812 (1978-08-01), Campbell

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