Back to results
US 5,510,014 AGranted
Method for regenerating tin or tin alloy electroplating
AssigneeMac Dermid, Incorporated
InventorHiroyoshi Murayama
Life of this patent
Estimating the term…
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.
Claims8
A method for regenerating a tin or tin alloy electroplating bath, which method comprises adding a coagulant comprising a water-soluble polymer and a polymeric flocculant to an aged tin or tin alloy electroplating bath containing sludge, then agitating the bath, allowing the sludge to coagulate with the coagulant and form a floc sludge to be precipitated, and separating the precipitated floc.
Dependencies are inferred from the claim text.