Title: Process for dyeing zinc and zinc alloys

Abstract: A multi-colored decorative zinc or zinc alloy having locally organic dyestuff-dyed portions in multi-color is prepared by (1) dyeing with a dyestuff zinc or zinc alloy having a dyeable chromate film bonded thereonto, (2) polishing locally the dyed surface of zinc or zinc alloy, (3) making the chromate film on the exposed surface, (4) dyeing with another dyestuff having a different color the chromate film on the exposed surface, and then the steps (2), (3) and (4) may successively be repeated.

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Other info:

Inventors: Kasahara, Nobuyoshi (Sayama, JP)
Nonomura, Koutarou (Kunitachi, JP)

Application Number: 018324
Filing Date: 1979-03-07
Publication_date: 1980-12-09
Assignee: Mitsui Mining & Smelting Co., Ltd. (Tokyo, JP)
Primary Class(es): 148/244
Other Classes:
US Patent Ref:

2393640	Jan, 1946	King	148/6.
2477310	Jul, 1949	McLean	148/6.
2594820	Apr, 1952	Stern	204/18.
2604418	Jul, 1952	Stern	148/6.
2691627	Oct, 1954	Johnson	204/18.
3147153	Sep, 1964	Harris et al.	148/6.

Other Refs:
Primary Examiner: Kendall, Ralph S.
Assistant Examiner:
Attorney: Armstrong, Nikaido, Marmelstein & Kubovcik