Liquid, phosphate-free single phase degreasing compositions

US4844744A · kind A · utility

Assignee

• Henkel Kommanditgesellschaft auf Aktien · DE

Inventors

• Herbert Leiter · Wetzlar, DE
• Dieter Brodalla · Düsseldorf, DE
• Harald Wennemann · Erkrath, DE
• Frantisek Jost · Goldkronach, DE
• Andreas Buhl · Langenfeld, DE

Key dates

• Filing date: Mar 18, 1988
• Grant date: Jul 4, 1989
• Expiry date: Mar 18, 2008

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C23G1/22
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

Liquid phosphate-free single phase degreasing compositions for aluminum surfaces containing one or more builders, sequestrants and surfactants in aqueous alkaline solution, particularly containing alkali metal and/or ammonium carbonate, alkali metal and/or ammonium hydrogen carbonate, one or more acrylic polymers, optionally one or more other complexing agents which complement or partly replace the acrylic polymers, one or more anionic or nonionic surfactants, optionally other active substances and/or auxiliaries of the type normally used in degreasing compositions and water.