Clariant Corporation

Clariant Produkte (deutschland) Gmbh

Clariant Finance (bvi) Limited

Clariant Produkte Gmbh

Gernold Botthof

Karl Heinz Heier

Aranka Tardi

Christoph Kayser

Matthias Krull

Roman Morschhäuser

Matthias Löffler

Roman Morschh&auml;user

Michael Schaefer

Michael Schäfer

Claudia Diemel

Manfred Schade

Jürgen Tonhauser

Susanne Weber

The invention relates to a copolymer containing: i) 80-90% by weight of one or more structural units of the formula A, where Ris hydrogen or methyl, Ris C-C-alkylene, and Meis an ammonium or an alkali metal ion; ii) from 1 to 10% by weight of one or more structural units of the formula B where Rand Rare each independently hydrogen, methyl or ethyl; iii) from 1 to 10% by weight of one or more structural units of the formula C, where n is a number from 1 to 6; iv) from 0.1 to 5% by weight of structural units of the formula D where X is hydrogen, an ammonium ion or an alkali metal ion; and optionally, v) from 0 to 10% by weight of one or more structural units of the formula E, where Ris hydrogen, methyl and/or ethyl, with the proviso that the content in the copolymers of structural units B) and C) is from 6 to 15% by weight.     

Thermally stable water-soluble polymer which is crosslinkable at high temperatures

The invention relates to compositions comprising copolymers based on acryloyldimethyltaurine and also synergistic additives selected from anionic, cationic, nonionic, and betaine surfactants. The compositions exhibit a pronounced thermoassociative behavior and are outstandingly suitable as thickeners. The copolymers of the present invention are useful in formulating cosmetics, pharmaceuticals, and oil field chemicals.

Compositions containing copolymers based on acryloyldimethyl aminoethylsulfonic acid and synergistic additives

Copolymers and their use as drilling aids

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Antrifttal, Germany

Gernold Botthof