Electroplating zinc and bath therefor

US4045306A · kind A · utility

Assignee

• SCHERING CORPORATION · US

Inventors

• Gerd Senge · Berlin, DE
• Gunter Voss · Herrsching am Ammersee, DE

Key dates

• Filing date: Jun 1, 1976
• Grant date: Aug 30, 1977
• Expiry date: Jun 1, 1996

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C25D3/22
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

An alkaline - cyanide free or substantially cyanide-free bath is provided for the electrodeposition of a bright levelled zinc coating; said bath containing a zinc salt, alkali hydroxide and conventional additives and a reaction product of unsaturated nitrogen heterocyclic hydrocarbon compounds containing at least two nitrogen atoms in the ring with epihalogen hydrin or glycerol halogen hydrin.