Life extension of catalyst predip baths

Details Life extension of catalyst predip baths Life extension of catalyst predip baths

C - Chemistry, Metallurgy

23

C

23/411, 117/80

C23C 18/38 (2006.01) B01J 16/00 (2006.01) C23C 18/28 (2006.01)

Patent

CA 1201332

LIFE EXTENSION OF CATALYST PREDIP BATHS Abstract of the Disclosure: A method and apparatus for extending the useful life of an acqueous acid chloride solution that serves as a protective bath for an activator dip bath such as used in electroless copper plating. Means are provided for recirculating the acidic chloride solution over metallic tin to precipitate copper ions from the solution. The precipitated copper is filtered from the solution to extend its useful life.

443452

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