Title:
ZINC ALLOY ELECTROPLATING BATH
Document Type and Number:
Japanese Patent JPS59215492
Kind Code:
A
Abstract:
PURPOSE:To obtain an electroplating bath giving a brass-colored film by plating by adding a polymer or a copolymer of alkanolpolyamine and epihalohydrin as a brightener to a zinc alloy plating bath. CONSTITUTION:A Zn-Cu or Zn-Cu-Sn alloy plating bath contg. potassium pyrophosphate is prepd. To the bath are added a polymer or a copolymer of alkanolpolyamine and epihalohydrin as a brightener and a polymer or a copolymer of alkylamine or alkylpolyamine and epihalohydrin as a complexing agent. When Sn is added to form a ternary alloy film, the luster is increased, and the color tone is made yellow and uniform. Polyoxycarboxylic acid may be added. It is effective in preventing the settling of Zn, complexing Cu, and making the color tone uniform.
Inventors:
KOSHIURA TSUTOMU
SAKATA TAKASHI
SAKATA TAKASHI
Application Number:
JP8665883A
Publication Date:
December 05, 1984
Filing Date:
May 19, 1983
Export Citation:
Assignee:
NIPPON KAGAKU SANGYO KK
International Classes:
C25D3/56; (IPC1-7): C25D3/56
Attorney, Agent or Firm:
Shukichi Nakagawa