Silicone compositions for treating wool materials
AssigneeCiba Specialty Chemicals Corporation
InventorsSimpert Lüdemann, Jürgen Riedmann, Harald Chrobaczek, Theodor Angele, Lee Howarth
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Abstract
Compositions are described with organopolysiloxanes which contain crosslinked units and are further crosslinkable. The compositions further contain a polyurethane containing blocked isocyanate groups. They are useful for treating fiber materials, especially textile sheet materials, and can be applied thereto in the form of aqueous solutions or dispersions. Textiles which are 50 to 100% by weight wool and have been finished with the compositions exhibit low shrinkage and low felting tendency during washing operations and also a pleasant, soft hand.
Claims18
Composition comprising at least a component A and a component B,
- wherein component A is an organopolysiloxane whose terminal groups are of the formula (I)
- X3Si—O— (I)
- and which in the polysiloxane chain contains units of the formula (II) and units of the formula (III)
- —SiR2—O— (II)
- —SiR(OR′)—O— (III)
- where all the R radicals are each independently a phenyl radical or an alkyl radical of 1 to 4 carbon atoms,
- all the X radicals are independently R or OH or OR subject to the proviso that at least one of all the X radicals present is OH or OR,
- all the R″ radicals are independently R or
- and m and n are each from 0 to 200,
- and component B is a polyurethane which contains reversibly blocked isocyanate groups.
Dependencies are inferred from the claim text.