Oxidative method
AssigneeCatexel Technologies Limited
InventorsRonald Hage, Karin Maaijen, Yfranka Petronella Areke Roelofsen
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Abstract
The present invention relates to a method of generating chlorine dioxide from chlorite salts in the presence of a manganese ion-containing complex, a method of treating a substrate with a chlorine-containing oxidant in the presence of a manganese ion-containing complex and related aqueous media, kits and compositions.
Claims19
An aqueous medium comprising a chlorine-containing chemical, wherein the chlorine-containing chemical is a chlorite salt, and a complex of one or more manganese ions and one or more polydentate ligands, which are either chelants capable of chelating at least one manganese ion through four nitrogen atoms or are Schiff-base ligands that are imine-containing polydentate ligands, with the proviso that the complex does not comprise a porphyrin or porphyrazine ligand and wherein the aqueous medium comprises between about 0.001 and about 5 μM of the complex.
A method of generating chlorine dioxide from a chlorine-containing chemical;
- which is a chlorite salt, comprising contacting;
- in an aqueous medium, a chlorite salt and a complex comprising one or more manganese ions and one or more polydentate ligands, which are either chelants capable of chelating at least one manganese ion through four nitrogen atoms or are Schiff-base ligands that are imine-containing polydentate ligands, with the proviso that the complex does not comprise a porphyrin or porphyrazine ligand and wherein the aqueous medium comprises between about 0.001 and about 5 μM of the complex.
A method of treating a substrate comprising contacting, in an aqueous medium, (i) the substrate (ii) an amount of a chlorine-containing chemical, which is a chlorite salt;
- and (iii) a complex comprising one or more manganese ions and one or more polydentate ligands, which are either chelants capable of chelating at least one manganese ion through four nitrogen atoms or are Schiff-base ligands that are imine-containing polydentate ligands, with the proviso that the complex does not comprise a porphyrin or porphyrazine ligand and wherein the aqueous medium comprises between about 0.001 and about 5 μM of the complex.
Dependencies are inferred from the claim text.