Method of depositing a metal on a surface

Details Method of depositing a metal on a surface Method of depositing a metal on a surface

1977-09-09

1980-01-01

Newsome, John H.

Radiation imagery chemistry: process, composition, or product th

Post imaging processing

Physical developing

427 98, 427306, 427430A, 430317, 430417, 430423, B05D 306, G03D 500

Patent

active

041817508

ABSTRACT:
A method of depositing a metal on a surface is disclosed. The method comprises coating the surface with a sensitizing solution comprising at least a reducible salt of a non-noble metal. The coated surface is selectively treated to reduce the metal salt to metallic nuclei to form a catalytic pattern thereon capable of directly catalyzing the deposition of a metal on the nuclei from an electroless metal deposition solution. The selectively treated surface is then exposed to a stripping solution comprising an organic acid selected from (a) a carboxylic acid having a structural formula of ##STR1## where R is a member selected from the hydrogen radical, H, and an alkyl group having 1 to 3 carbon atoms, (b) citric acid and (c) a mixture of any of the foregoing acids, to essentially remove portions of the coated surface which have not been selectively treated.

REFERENCES:
patent: 3619285 (1971-11-01), Feldstein
patent: 3632435 (1972-01-01), Eriskson
patent: 3663242 (1972-05-01), Gulla et al.
patent: 3722078 (1973-11-01), Polichette et al.
patent: 3772056 (1973-11-01), Polichette et al.
patent: 3907621 (1975-09-01), Polichette et al.
patent: 3925578 (1975-12-01), Polichette et al.
patent: 3930963 (1976-01-01), Polichette et al.
patent: 4008343 (1977-02-01), Cohen et al.

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