Ciba Specialty Chemicals Corporation

Ciba-geigy Corporation

Franz Dirschl

Wilhelm Artner

Edeltraud Schidek

Heinz Gaugenrieder

Harald Chrobaczek

Franz Mosch

Simpert L&uuml;demann

Jurgen Uhl

Michael Bernheim

Ralf Goretzki

Erich Rossler

Rolf Moors

Shobha Kantamneni

Theodor Angele

Erich R&ouml;ssler

Simpert Lüdemann

G&uuml;nther Tschida

Thu Thao Reimann-Dang

Hans-Ludwig Kienle

Rainer Augart

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

Described are polysiloxane compositions that are obtainable in 2 steps. The first step comprises reacting a linear organopolysiloxane which contains Si&mdash;H bonds with a compound that has a terminal C&boxH;C double bond and a polyoxyalkylene chain. This reaction is carried out in such a way that Si&mdash;H bonds are still present in the resultant product. The second step comprises adding a base or water and an acid to the resultant product. The hydrophilic properties of the resultant polysiloxane compositions can be influenced in a specific manner. The compositions are useful for treating fiber materials, especially textile fabrics. The effects obtained are notable for good durability. Further groups may be incorporated into the polysiloxanes to open up further applications.

Polyorganosiloxanes having alkoxylated side chains

Novel fluorine-containing paper sizes which impart oil and grease resistance to paper and soil-release properties to textile products are described which are the copolymerization products of (a) a perfluoroalkyl-substituted (meth)acrylate or (meth)acrylamide, (b) a secondary- or tertiary-amino or quaternary ammonium group-containing (meth)acrylate or (meth)acrylamide, (c) vinylidene chloride and, optionally, d) other copolymerizable nonfluorinated vinyl monomers.

Fluorinated polymeric paper sizes and soil-release agents

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

Products which are produced by reaction of diisocyanates with di- or polyhydric alcohols and/or with one or more mono- and/or diethers of such alcohols and subsequent reaction with organic amines containing two or more alcoholic hydroxyl groups and subsequent blocking of free isocyanate groups are suitable for the finishing of fiber materials, in particular in the form of aqueous dispersions as extenders for use in combination with polymers containing perfluoroalkyl groups for the oil-, water- and soil-repellent finishing of fiber materials.

Products of the reaction between isocyanates and hydroxyl compounds for

Compositions in the form of aqueous dispersions which contain dihydroxypolyorganosiloxanes, amino-functional silanes and cyclic oligosiloxanes and/or reaction products of these components, are suitable for coating sheet materials made of fiber materials. This confers, to the sheet materials, good waterproofness properties with good permanency of the waterproofness, good low-temperature flexibility and springiness.

Compositions, containing organic silicon compounds, for the treatment of

The present invention relates to a process for the treatment of fibrous materials with modified organopolysiloxanes, wherein, in an aqueous medium, an organopolysiloxane copolymer prepared in a first stage from customary cyclic siloxanes (A) and unsaturated silanes (B) in the presence of a crosslinking agent and emulsifier (1) is copolymerized in a second stage with at least one vinyl monomer in the presence of emulsifiers (2), and the resulting dispersion of the modified organopolysiloxane copolymer is applied to the material in the customary manner and the material is dried and subjected to condensation. The process has the advantage that the materials, in particular textiles, treated by the process, above all coated by the process, have very good waterproof properties and at the same time good to very good water repellency. However, the materials are simultaneously distinguished by a pleasant soft handle, without the degree of whiteness thereof being noticeably impaired.

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Augsburg, Germany

Franz Dirschl