PROCESS FOR THE ELECTROLYTIC REGENERATION OF COPPER ETCHANTS COMPRISING CHLORIDE IONS
摘要
<p>Etching soln. is diluted to a concn. of 2-50 g/l Cu and pH 0.5-10. The electrolysis is carried out at 0.5-10 A/dm2, in the presence of a highly oxidisable organic agent, usually 1-4C aliphatic alcohol or aldehyde, hydrazine or hydroxylamine, pref. methanol.</p>
