Use of partial esters of oligoglycerols with fatty acids as pigment dispersants for water-based lacquer dispersions

US5336313A · kind A · utility

Assignee

• Henkel Kommanditgesellschaft auf Aktien · DE

Inventors

• Reinhard Bunte · Dormagen, DE
• Wolfgang Gress · Wuppertal, DE
• Ulrich Nagorny · Hilden, DE
• Manfred Gorzinski · Düsseldorf, DE

Key dates

• Filing date: Dec 16, 1991
• Grant date: Aug 9, 1994
• Expiry date: Dec 16, 2011

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09D7/45
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

The physical and chemical properties of a pigment-containing, water-based lacquer dispersion are improved by adding thereto a partial ester of an oligoglycerol obtained by condensation of 2 to 20 moles of glycerol with a C.sub.2 -C.sub.18 fatty acid. The partial ester may be ethoxylated and/or propoxylated, and the fatty acid may be hydroxy substituted.