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.
Claims21
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, 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 chlorine dioxide and/or 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, 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.
An aqueous medium comprising a chlorine-containing chemical, which is chlorine dioxide and/or 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, 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 kit comprising a chlorite salt and, separately, one or more polydentate ligands, which are either chelants capable of chelating at least one manganese ion through four nitrogen atoms or one or more Schiff-base ligands, with the proviso that the one or more polydentate ligands are not porphyrin or porphyrazine ligands.
A composition comprising a chlorite salt and one or more polydentate ligands, which are either chelants capable of chelating at least one manganese ion through four nitrogen atoms or one or more Schiff-base ligands, with the proviso that the one or more polydentate ligands are not porphyrin or porphyrazine ligands.
Dependencies are inferred from the claim text.