Bayer Aktiengesellschaft

Wilfried Kortmann, Deceased

Jutta Rottger

Karl-Heinz Passon

Peter Selinger

Rolf-Volker Meyer

Karl-Erwin Piejko

Walter Meckel

Wolfgang Henning

Wolf-Dieter Schroer

Peter Nussbaum

Gerd F Renner

Werner Maurer

Copolymers and graft copolymers of perfluoroalkylacrylates or methacrylates and esters of the general formula (I) or (II) ##STR1## wherein R, R.sub.1 and R.sub.2 denote hydrogen or methyl,

Copolymers containing perfluoroalkyls

Phobicity effects of high quality and permanence are obtained on textile materials of the most diverse types if these are finished with combinations of

Hydrophobizing and oleophobizing compositions

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.

Graft copolymers containing perfluoroalkyl groups

Aqueous dispersions of copolymers and graft copolymers of ethylenically unsaturated perfluoroalkyl monomers having at least 6 C atoms in the perfluorinated chain and ethylenically unsaturated monomers containing no perfluoroalkyl groups, which additionally contain certain ester compounds which cannot be used as comonomers, are outstandingly suitable for finishing textile materials, leather and the like. Excellent oleophobic and hydrophobic effects are obtained.

Dispersions of copolymers containing perfluoroalkyl groups

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Nachrodt-Wiblingwerde, Germany

Wilfried Kortmann, Deceased