Solutions for cleaning surfaces of copper and its alloys

Details Solutions for cleaning surfaces of copper and its alloys Solutions for cleaning surfaces of copper and its alloys

C - Chemistry, Metallurgy

11

D

149/14, 149/19,

C11D 7/08 (2006.01) C11D 7/18 (2006.01) C11D 7/32 (2006.01) C23G 1/10 (2006.01)

Patent

CA 1050401

Abstract of the Disclosure SOLUTIONS FOR CLEANING SURFACES OF COPPER AND ITS ALLOYS A solution for pickling copper and its alloys contains one or more of such mineral acids as sulphuric acid or phosphoric acid in combination with hydrogen peroxide and such a hydroxy acid as citric acid or gluconic acid together with a nitrogen combination of the type substituated tria- zole and/or a tertiary amine of the general formula Image in which R is an aliphatic carbon chain containing less than 24 carbon atoms and the sum of n1 and n2 is less than 30.

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