Title: Solution for cyanide free gold plating by brushing
Application Number: 85103632 Application Date: 1985.05.27
Publication Number: 1005310 Publication Date: 1986.11.26
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: C25D4/38,C25D5/06
Applicant(s) Name: Beijing Qingyun Instrument Factory Address:
Inventor(s) Name: Ding Ding, Li Zhaoting, Liang Xutong, Ma Yushan, Y
Attorney & Agent:
Abstract:
     In order to solve toxicity and environmental pollution problems in gold plating by the method of brushing cyanide solution, this invention provides a cyanide free gold solution for brushing plating. It is a solution of polygoldcomplex prepared by the reaction of sulfite or thiosulfate with aliphatic amines, alcohols or acids having polyligands. It is especially suitable for repainting of articles that are impossible to disassemble and for surface treatment of articles that can not be treated by bathplating.
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