Patent ID: 6706167
Filing Date: 2004-03-16
Classification: C25D

Abstract:
A polymer additive for an alkaline zinc or zinc alloy electroplating bath medium comprising a reaction product of one or both of:(i) a first di-tertiary amine of formula (1) as follows: â€ƒwhere Râ€² is selected from â€ƒq is valued from 2 to 6, each R is selected from the group consisting of CH3 and C2H5, wherein each R may be the same or different, and m is valued from 2 to 4, and a secondary di-tertiary amine of formula (2) as follows: â€ƒwherein B group is CgH2g+1 and g=0 or an integer, wherein each B group may be the same or different, f=0 or an integer, and each Râ€³ is selected from the group consisting of CH3 and C2H5, and each Râ€³ may be the same or different, with (ii) a di-halo alkane of the formula (3) as follows: Aâ€”(CH2)nâ€”Aâ€ƒâ€ƒ(3) wherein A represents a halogen atom and n is valued to be at least 2, provided that when the second di-tertiary amine of formula (2) is absent, n is valued to be at least 3;wherein moieties derived from the first di-tertiary amine and/or the second di-tertiary amine are present in a ratio of from approximately 25:75 to approximately 75:25.