Patent ID: 6217738
Filing Date: 2001-04-17
Classification: C25D

Abstract:
A composition suitable for use in a process for electroplating surfaces with tin, comprisinga) one or more acids selected from the group consisting of sulphuric acid, sulphamic acid, phenol-4-sulphonic acid; toluene-2 sulphonic acid, toluene4-sulphonic acid, and methane sulphonic acid;b) one or more addition agents selected from the group consisting of a 2,4-di-substituted phenol, a 2,6-di-substituted phenol, and a 2,4,6-tri-substituted phenol and the alkyolated forms thereof in which at least one of the substituents includes a secondary, tertiary or quaternary nitrogen atom,c) a tin source andd) water.