Process for the treatment of copper oxide in the preparation of

Details Process for the treatment of copper oxide in the preparation of Process for the treatment of copper oxide in the preparation of

1985-10-24

1988-01-05

Schor, Kenneth M.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156278, 156901, 148 624, 427399, 427 96, 422 7, H05K 109, H05K 322, C23F 1100

Patent

active

047174390

ABSTRACT:
A composition and process is disclosed for improving the leach resistance of the copper oxide coating on the copper circuitry of printed circuit boards to solutions used in their preparation which comprises contacting the copper oxide of the circuit board with a solution containing an amphoteric element which forms an acidic oxide, such as selenium dioxide.

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