Electroplating process

Electrolysis: processes – compositions used therein – and methods – Electrolytic coating – Coating selected area

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C25D 502

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active

056267363

ABSTRACT:
A process for electroplating a metal clad substrate by forming a sacrificial coating over the metal cladding and then coating the substrate with a coating of carbonaceous particles. The coating of particles is applied to the substrate from an aqueous dispersion and then the coating is contacted with an etchant for the sacrificial coating to undercut the carbonaceous coating and facilitate its removal from areas where plating is undesired.

REFERENCES:
patent: 2897409 (1959-10-01), Gitto
patent: 3668130 (1972-06-01), Kadison
patent: 4512818 (1985-04-01), Valayil et al.
patent: 4619741 (1986-10-01), Minten et al.
patent: 5389270 (1995-02-01), Thorn et al.
patent: 5500106 (1996-03-01), Goldberg
Raymond H. Clark, "Handbook of Printed Circuit Manufacturing," VanNostrand Reinhold, New York pp. 464-467. Jan. 1985.

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