Composition for treating copper or copper alloy surfaces

Compositions – Etching or brightening compositions

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252 794, 134 3, 134 41, 1566251, 1566341, 1566541, 1566551, 1566561, C09K 1300

Patent

active

055320945

ABSTRACT:
A method for roughening surfaces of copper or copper alloy to provide an excellent adhesion of a coated or laminated layer thereon, comprising treating said surfaces with an amount and for a time effective to roughen them with an aqueous solution comprising an azole compound, a copper compound dissolvable in the solution, an organic or inorganic acid and a halogen ion.

REFERENCES:
patent: 3933531 (1976-01-01), Sawa et al.
Metal Finishing, vol. 83, No. 1, Jan. 1985, M. Bakszt, "Providing Solderability Retention By Means Of Chemical Inhibitors".

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