Basf Aktiengesellschaft

Alexander Wallon

Ulrike Licht

Karl Haeberle

Gerhard Auchter

Lothar Maempel

Horst Seibert

Erich Gulbins

Angelika Funhoff

Ruediger Fuessl

Aqueous polyurethane dispersions contain, at a pH of the dispersing medium of .gtoreq.6, an anionically stabilized polyurethane present in disperse form as well as an added polymer having acidic functions and intended for reducing the flow resistance.

Aqueous polyurethane dispersions

A process for reducing the pH of anionic polyurethane dispersions which are stabilized by carboxylate or sulfonate groups, which comprises adding a compound which has from one to four ester groups but no acid group or acid halide or anhydride group to the dispersions.

Reduction in the pH of anionic polyurethane dispersions which are

Aqueous dispersions containing a polyurethane and from 5 to 60% by weight, based on the polyurethane, of an adhesion-improving polymer, the polyurethane consisting essentially of

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Hassloch, Germany

Alexander Wallon