Process for preparing zinc phosphate coatings containing manganese and magnesium

US5207840A · kind A · utility

Assignee

• Henkel Kommanditgesellschaft auf Aktien · DE

Inventors

• Joerg Riesop · Niederzier, DE
• Karl-Heinz Gottwald · Lechenich, DE
• Wolf-Achim Roland · Solingen, DE

Key dates

• Filing date: Dec 16, 1991
• Grant date: May 4, 1993
• Expiry date: Dec 16, 2011

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C23C22/188
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

Magnesium on steel, zinc, aluminum and/or the alloys thereof by spraying, spray-immersion and/or immersion with an aqueous solution.