Electroless method of antiquing a pewter component

Details Electroless method of antiquing a pewter component Electroless method of antiquing a pewter component

1995-04-20

2000-01-11

Beck, Shrive

Coating processes

Immersion or partial immersion

Chemical compound reducing agent utilized

427327, 427368, 4273768, 148277, 148284, B05D 118, B05D 302, B05D 312, C23C 880

Patent

active

060133287

ABSTRACT:
This invention is directed to an electroless method of antiquing a zinc or pewter component and to products produced using the method. In its simplest form, the method includes: contacting the metal component with an oxidizing solution; rinsing the metal component to stop the formation of additional oxide; and buffing the component to achieve the desired antique look. In a preferred form of the invention, the oxidizing solution includes copper chloride, selenious acid, hydrochloric acid and sodium tetradecyl sulfate. The preferred method further includes various cleaning, rinsing and drying steps, as well as the application of a protective lacquer or other coating to seal the oxide formed on the metal component.

REFERENCES:
patent: 3615747 (1971-10-01), Friedman
patent: 3767475 (1973-10-01), Schubert
patent: 4368237 (1983-01-01), Yamada et al.
patent: 4863516 (1989-09-01), Mosser et al.
patent: 5196665 (1993-03-01), Briffod
patent: 5463800 (1995-11-01), Rojdev
patent: 5519923 (1996-05-01), Rojdev
Publication, Metal Finishing, "Metal Blackeners and Antiquing Solutions", Electrochemical Products, Inc. (EPI), p. 77, Mar., 1995.
Technical Data Sheet, Electrochemical Products, Inc. (EPI), 17000 Lincoln Avenue, New Berlin, WI 53151-2781, Feb. 1990.
Material Safety Data Sheet, Electrochemical Products, Inc. (EPI), 17000 Lincoln Avenue, New Berlin, WI 53151-2781, Feb. 1990.

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