Ciba Specialty Chemicals Corporation

Huntsman International LLC

Heinz Gaugenrieder

Wilhelm Artner

Edeltraud Schidek

Franz Dirschl

Rolf Moors

Simpert L&uuml;demann

Simpert Lüdemann

Franz Mosch

Erich R&ouml;ssler

Andreas Eisele

Thu Thao Reimann-Dang

The use is described of aqueous dispersions in combination with fluoropolymers for oil- and water-repellent finishing of fiber materials. These dispersions have a long shelf life and contain a composition which is preparable by reaction of polyfunctional isocyanates with a deficiency of comparatively long-chain monohydric alcohols, subsequent reaction with a deficiency of a ketone oxime and final reaction with polyhydric alcohols or amino alcohols.

Extender for treatment of fiber materials

Fiber materials in the form of fabrics receive, as a result of treatment with compositions according to the invention, a pleasant soft hand and excellent oil-and water-repelling properties with good permanence. The compositions can be obtained by a) preparing a solution of a polysiloxane and an extender with blocked isocyanate groups in an organic solvent, b) dispersing this solution in water, c) removing the organic solvent and d) combining the aqueous dispersion obtained with a second aqueous dispersion which comprises a polymer with perfluoroalkyl groups. One variant of this preparation process consists in cousing a polymer with perfluoroalkyl groups as early as in step a). In this case, step d) can be omitted.

Compositions of polysiloxanes, fluoropolymers extenders

Compositions comprising an ester with perfluoroalkyl groups and an oligo- or polyurethane which may likewise contain perfluoroalkyl groups are useful for the oil and water repellant finishing of sheetlike textile materials. The compositions may additionally include acrylic polymers having perfluoroalkyl groups and extenders. Especially the use of nonionic aqueous dispersions of the compositions makes it possible to obtain textiles with little if any effect losses after mechanical abrasion and good LAD effects.

Compositions for the oil and water repellent finishing of fiber materials

Aqueous dispersions comprising as component A) a compound containing two or more blocked isocyanate groups in the molecule and as component B) a compound obtainable by reacting a diepoxy compound with a diamine or polyamine and subsequently reacting the resulting reaction product with an acid and possibly as component C) a dispersant are suited together with fluorine containing oligomers or polymers for the oil-, water- and soil-repellent finishing of fiber materials.

Aqueous dispersions for textile finishing

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Zusmarshausen, Germany

Heinz Gaugenrieder