Aqueous compositions comprising nitrogen-containing polysiloxanes
AssigneeCiba-Geigy Corporation
InventorsMichael Bernheim, Harald Chrobaczek, Gunther Tsuchida
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Abstract
Stable, low-viscosity dispersions of polysiloxanes containing amino or amido groups can be obtained, even at comparatively high concentrations and/or pH values, by adding a product of the formula R1--CH(X)--Y--O--R2 (R1 is H, CH.sub.3 ; X=OH, NH.sub.2 ; R2=C.sub. -C.sub.4 -alkyl, unsubstituted or substituted by OH or OR3; R3=C.sub.1 -C.sub.4 -alkyl, unsubstituted or substituted by OH) to the dispersions. The dispersions are suitable for the treatment of fiber materials, especially textiles, to which a soft handle is thereby imparted.
Claims7
An aqueous composition in the form of a solution or a dispersion, which consists essentially of
- (a) 5 to 40 parts by weight of an organopolysiloxane with on average at least one monovalent organic radical, R, which is bonded to a silicon atom via a carbon atom and which comprises at least one amino or amido group;
- (b) 5 to 10 parts by weight a compound of formula I or a mixture of compounds of formula I;
- ##STR11## in which X is --OH or --NH.sub.2, ##STR12## R1 is H or CH.sub.3, R2 is an unbranched or branched alkyl radical having 1 to 4 carbon atoms, which can be substituted by an OH or OR3 group, and
- R3 is an unbranched or branched alkyl radical having 1 to 4 carbon atoms, which can be substituted by an OH group,
- (c) 0 to 15 parts by weight of a nonionic dispersant;
- (d) 0 to 15 parts by weight of a dispersed polyethylene wax;
- and 40 to 80 parts by weight of water.
Dependencies are inferred from the claim text.