Graft copolymers containing perfluoroalkyl groups

US5115013A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Jutta Rottger · Cologne, DE
• Karl-Heinz Passon · Leverkusen, DE
• Wolf-Dieter Schroer · Leverkusen, DE
• Wilfried Kortmann · Hagen, DE

Key dates

• Filing date: Apr 12, 1991
• Grant date: May 19, 1992
• Expiry date: Apr 12, 2011

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L51/08
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Aqueous dispersions of copolymers and/or graft copolymers composed of ethylenically unsaturated perfluoroalkyl monomers and perfluoroalkyl-free ethylenically unsaturated monomers can be prepared by polymerization in the presence of aqueous, emulsifier-free polyurethane dispersions as the graft base based on compounds containing perfluoroalkyl groups and active hydrogen atoms and compounds containing ionic and/or nonionic hydrophilic groups and active hydrogen atoms and polyisocyanates and can be used for the oil-repellent and water-repellent finishing of textiles, carpets, leather and paper.