Copolymers containing aminoplast units and use thereof as a dispersing agent or stabilizers

US7335699B2 · kind B2 · utility

Assignee

• Sud Chemie, Inc. · US

Inventors

• Klaus Dziwok · Freilassing, DE
• Inge Kramer · Freising, DE
• Norbert Schall · Langenpreising, DE
• Helmut Coutelle · Freising, DE
• Sabine Huth · Landshut, DE
• Alan L. Steinmetz · Louisville, US
• Thadeus Schauer · Calw, DE
• Heinz Greisiger · Munich, DE
• Mark Entenmann · Fellbach, DE

Key dates

• Filing date: Dec 17, 2002
• Grant date: Feb 26, 2008
• Expiry date: Dec 1, 2023

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09D17/001
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A description is given of water-soluble aminoplast ether copolymers of the following structural type:wherein Z is a glycoluril central unit, B is a radical of an essentially water-insoluble polymer and R1 is a radical of a hydrophilic organic compound. The ratio R1:B is selected within a range of about 1.5 to 4:1 and the overall mass of the water-soluble aminoplast ether copolymer is from about 2000 to 50 000 g/mol such that the copolymer is soluble in water and may be used as a dispersant for e.g. pigments in polar solvents, e.g. water.