Cassella Aktiengesellschaft

Hoechst Aktiengesellschaft

Hoechst Mitsubishi Kasei Co., Ltd.

Hoechst Aktiengsellschaft

Ralf Zerrer

Fritz Engelhardt

Karl-Heinz Keil

Willi Steckelberg

Jurgen Kuhlwein

Wilfried Schuler

Werner Antwerpen

Ulrich Buhler

Klaus Delpy

Dirk Buhring

##STR1## in which X denotes ##STR2## and the other variables are defined as indicated in claim 1, processes for their preparation and their use.

Polycondensates containing phosphinic and phosphonic acid groups

The present invention relates to a process for the preparation of ether-sulphonates of high purity, substantially free from extraneous salts, of the general formula I

Process for the preparation of ether-sulphonates

The present invention relates to polycondensates of the general formula I ##STR1## in which X stands, at least once, for a group of the formula VII ##STR2## and, at least once, a group of the formula VIII ##STR3## and the other variables are defined as indicated in claim 1, processes for their preparation and their use.

Polycondensates containing phosphinic or phosphonic acid groups and

The present invention relates to polycondensates of the general formula I ##STR1## in which ##STR2## and the other variables are defined as indicated in claim 1, processes for their preparation and their use.

Polycondensates containing polysiloxane groups

The present invention relates to a process for dyeing polyester or polyester-containing textile materials at pH 8 to pH 11 with one or more monoazo dyestuffs of the general formula I ##STR1## in which A, R and X.sup.1 to X.sup.3 are as defined in claim 1.

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Alzenau, Germany

Ralf Zerrer