Bayer Aktiengesellschaft

Karl Schafer

Hans Schuster

Hanns P Muller

Dieter Dieterich

Klaus Walz

Hans Schulze

Gunther Hoffarth

Friedrich Reich

Hans-Jurgen Lienert

Water-soluble or water-dispersible segmented polyetheresters having a predominantly linear molecular structure and containing

Polyetheresters, their preparation, and their use for treating textiles

Ammonium compounds of the formula ##STR1## in which R and R.sub.1 designate C.sub.1 -C.sub.21 -alkyl or C.sub.2 -C.sub.21 -alkenyl,

Ammonium compounds

This disclosure is concerned with an improved process of treating keratin-containing fiber materials with aqueous solutions of polyisocyanate bisulphite adducts to improve their resistance to felting and shrinkage. The material is pretreated with an aqueous bath containing both a compound carrying a cationic group and the salt of a polyvalent metal or the material is pretreated with just the cationic compound but the polyvalent metal salt is present in the aqueous bath used to apply the bisulphite adduct.

Process for the feltproof finishing of textiles made of

A simple and economical one-step process for felt-proofing and dimensionally stabilizing textiles, particularly textiles based on keratinous fibers is disclosed. In the process, the textiles are treated with aqueous baths which contain salts of sulfurous acid or pyrosulphites as reducing agents and polyurethanes which contain onium groups.

Process for felt proofing and dimensionally stabilizing textiles made of

An aqueous solution of bisulphite blocked polyisocyanate prepolymers is imparted improved storage stability at temperatures up to about 45.degree. C by incorporation of about 0.5 to 20% by weight (based on the weight of bisulphite blocked prepolymer) of an aromatic or alkyl aromatic sulphonic acid of the formula:

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Leverkusen, Germany

Karl Schafer