Method for regenerating tin or tin alloy electroplating

Electrolysis: processes – compositions used therein – and methods – Electrolytic coating – Treating process fluid by means other than agitation or...

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210705, C25D 2118

Patent

active

055100147

ABSTRACT:
An aged tin or tin alloy plating bath is regenerated by adding a water-soluble polymer as a coagulant and a polymeric flocculant to remove sludge.

REFERENCES:
patent: 3623962 (1971-11-01), Beale
patent: 4052276 (1977-10-01), Yoshida et al.
patent: 4432844 (1984-02-01), Hinoda et al.
patent: 5128046 (1992-07-01), Marbue et al.

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