Method of treating a textile
AssigneeUnilever Home & Personal Care USA, Division of Conopco, Inc.
InventorRonald Hage
Life of this patent
Estimating the term…
Abstract
A method of treating a textile such as a laundry fabric is provided, in which the textile is contacted with a specified organic substance which forms a complex with a transition metal, whereby the complex catalyses bleaching of the textile by atmospheric oxygen after the treatment. The organic substance may be used in dry form, or in a liquor that is then dried, such as an aqueous spray-on fabric treatment fluid or a wash liquor for laundry cleaning, or a non-aqueous dry cleaning fluid or spray-on aerosol fluid. The method can confer cleaning benefits to the textile after the treatment. Also provided is a dry textile having an organic substance applied or deposited thereon, whereby bleaching by atmospheric oxygen is catalysed on the textile.
Claims35
A method of treating a textile comprising contacting the textile with an organic substance which forms a complex with a transition metal, obtaining the complex contacted textile in a dry form and allowing atmospheric oxygen in combination with the complex to catalyze bleaching of the textile in the dry form,
- wherein the organic substance forms a complex of a transition metal coordinated with a macropolycyclic rigid ligand having at least 3 donor atoms, at least two of which are bridgehead donor atoms.
Dependencies are inferred from the claim text.