Clariant International Ltd

Weylchem Switzerland Ag

Werner Janitschek

Gerd Reinhardt

Melanie Sajitz

Isabel Scheffer

Miriam Ladwig

Ina Herrgen

The invention relates to the use of manganese or iron complexes which, as well as a tetraoxolene unit, contain two macrocyclic, N-containing ligands, especially cyclen or cyclam ligands, in washing and cleaning compositions in the form of granules or powder or solution or suspension for bleaching of colored stains both on textiles and on hard surfaces. The invention also relates to washing and cleaning compositions which comprise such complexes as bleach activators and to the use thereof for textile washing or for dishwashing detergents and other uses in personal care and other areas.

Use of transition metal complexes as bleach catalysts in washing and cleaning compositions

The invention relates to a method for producing acyloxy benzoic acids of the formula (I), in which Ris a linear or branched saturated alkyl group with 6 to 30 carbon atoms, a linear or branched mono- or polyunsaturated alkenyl group with 6 to 30 carbon atoms, or an aryl group with 6 to 30 carbon atoms. The acyloxy benzoic acids of the formula (I) are produced from para-hydroxy benzoic acid and a corresponding carboxylic acid halide in the presence of an alkali hydroxide. 

Method for producing acyloxy benzoic acids

The invention relates to a method for producing acyloxy benzoic acids of the formula (I), in which Ris a linear or branched saturated alkyl group with 6 to 30 carbon atoms, a linear or branched mono- or polyunsaturated alkenyl group with 6 to 30 carbon atoms, or an aryl group with 6 to 30 carbon atoms. The acyloxy benzoic acids of the formula (I) are produced from para-hydroxy benzoic acid and a corresponding carboxylic acid halogenide in the presence of a base and are advantageously suitable for use as activators for hydrogen peroxide. 

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Heistenbach, Germany

Werner Janitschek