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 an iron ion-containing complex, a method of treating a substrate with a chlorine-containing oxidant in the presence of an iron ion-containing complex and related aqueous media, kits and compositions.
Claims38
An aqueous medium comprising a chlorine-containing chemical, which is a chlorite salt, and a complex of one or more iron ions and one or more polydentate ligands, which are chelants that contain at least three nitrogen atoms, with the proviso that the complex does not comprise a porphyrin ligand.
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 iron ions and one or more polydentate ligands, which are chelants capable of chelating at least one iron ion through at least three nitrogen atoms, with the proviso that the complex does not comprise a porphyrin ligand.
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 iron ions and one or more polydentate ligands, which are chelants capable of chelating at least one iron ion through at least three nitrogen atoms, with the proviso that the complex does not comprise a porphyrin ligand.
Dependencies are inferred from the claim text.