Basf Aktiengesellschaft

Guenther Grimm

Torsten Freund

Roland Ettl

Juergen Detering

Thomas Kessler

Norbert Mahr

Volker Braig

Manfred Winter

Simon Champ

Hydrophobically modified polymers containing vinylamine or ethylenimine units and obtainable by reacting

Hydrophobically modified polymers containing vinylamine or ethylenimine units, method for the production thereof, and their use as retention agents

A process for wrinkleproofing cellulosic textiles comprises treating the textiles with a finish and drying the treated textiles, wherein the finish comprises one or more water-soluble or water-dispersible hydrophobically modified polyethyleneimines and/or polyvinylamines. Suitable hydrophobically modified polyethyleneimines are hydrophobically modified homopolymers of ethyleneimine, hydrophobically modified graft polymers of polyamidoamines or of polyvinylamines. Suitable hydrophobically modified polyvinylamines are hydrophobically modified at least partially hydrolyzed homo- or copolymers of N-vinylcarboxamides. The polyethyleneimines and polyvinylamines can be crosslinked by polyfunctional crosslinking compounds, quaternized and/or modified by reaction with alkylene oxides, dialkyl carbonates, alkylene carbonates and/or C&#x2013;C-carboxylic acids. Suitable hydrophobicizing reagents are selected from the group consisting of long-chain linear or branched linear carboxylic acids, linear or branched alkyl halides, alkyl epoxides, alkylketene dimers, cyclic dicarboxylic anhydrides, alkyl isocyanates and chloroformic esters of fatty alcohols.

Hydrophobically modified polyethylenimines and polyvinylamines for wrinkle-resistant finishing of textiles containing cellulose

Alkylketene dimers are prepared by reacting acyl chlorides with tertiary amines in a molar ratio of from 1:1 to 1:1.6 at from 65 to 150&#xb0; C. and with a residence time of from 1 to 30 minutes in the absence of solvents with thorough mixing and isolation of the alkylketene dimers.

Method for producing alkylketen dimers

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Bruessel, Belgium

Guenther Grimm