Platinum plating bath

US5620583A · kind A · utility

Assignee

• Degussa AG · DE

Inventors

• Werner Kuhn · Rodenbach, DE
• Wolfgang Zilske · Hanau, DE

Key dates

• Filing date: Mar 27, 1996
• Grant date: Apr 15, 1997
• Expiry date: Mar 27, 2016

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C25D3/50
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

Crack-free, bright platinum layers with thicknesses of more than 100 .mu.m are obtained from electroplating baths which contain 5 to 30 g/l platinum as amminesulphamato complex and 20 to 400 g of a strong acid if the content of free amidosulphuric acid amounts to less than 5 g/l.