Etching of copper and copper bearing alloys

Details Etching of copper and copper bearing alloys Etching of copper and copper bearing alloys

1987-06-04

1989-08-22

Lacey, David L.

Adhesive bonding and miscellaneous chemical manufacture

Delaminating processes adapted for specified product

Delaminating in preparation for post processing recycling step

156664, 252 794, C23F 100, C23F 118

Patent

active

048592811

ABSTRACT:
A copper etching composition and an improved method for copper etching utilizing the composition, the composition includes an aqueous solution of a strong acid, a stabilized hydrogen peroxide, and an accelerator that can include both tolyltriazole and either an aliphatic water soluble monoalcohol or a glycol monoether in the etchant solution to provide a faster etching rate.

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