Bath and process for the electrodeposition of micromachinable co

Details Bath and process for the electrodeposition of micromachinable co Bath and process for the electrodeposition of micromachinable co

1985-03-11

1985-11-05

Kaplan, G. L.

Chemistry: electrical and wave energy

Processes and products

204DIG2, C25D 338

Patent

active

045512124

ABSTRACT:
It has been found that an additive comprising a mixture of phenazine dyestuffs in the combination from about 30 to 40 percent by weight of (a) a Janus Green B type dyestuff or a mixture thereof and (b) from about 70 to 60 percent by weight of Safranine T, when added to an aqueous acidic copper sulfate bath in the amount of about 0.03 to about 0.10 gram per liter of the bath, deposits copper consistently with the required properties for micromachining.

REFERENCES:
patent: 2424887 (1947-07-01), Hendricks
patent: 2707166 (1955-04-01), Brown et al.
patent: 3267010 (1966-08-01), Creutz et al.

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