Surface treatment of copper

Details Surface treatment of copper Surface treatment of copper

1998-08-10

2000-03-14

Green, Anthony

Compositions: coating or plastic

Coating or plastic compositions

Corrosion inhibiting coating composition

106 1413, 106 1415, 106 1441, 106 1442, 106 1443, 148243, 148269, 148271, C23F 1100

Patent

active

06036758&

ABSTRACT:
A composition useful for the surface treatment of copper, in particular for micro-roughening of the copper surface so as to improve the adhesion characteristics of the copper surface, comprises an oxidizing agent for copper and an aromatic sulfonic acid or a salt thereof. In a preferred embodiment, the oxidizing agent is hydrogen peroxide and the aromatic sulfonic acid is sodium m-nitrobenzenesulfonate. The composition preferably also includes an inorganic acid such as sulfuric acid and a corrosion inhibitor such as benzotriazole.

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patent: 3933531 (1976-01-01), Sawa et al.
patent: 4379834 (1983-04-01), Herwig et al.
patent: 4957653 (1990-09-01), Cordani
patent: 5017267 (1991-05-01), Cordani
patent: 5173130 (1992-12-01), Kinoshita et al.
patent: 5496590 (1996-03-01), Maki et al.
patent: 5498301 (1996-03-01), Hirao et al.
patent: 5795409 (1998-08-01), Hirao et al.

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