Title:
COMPOSITION AND METHOD FOR BLEACHING A SUBSTRATE
Document Type and Number:
WIPO Patent Application WO2001048299
Kind Code:
B1
Abstract:
The invention relates to catalytically bleaching substrates, especially laundry fabrics, with atmospheric oxygen or air. A method of bleaching a substrate is provided that comprises applying to the substrate, in an aqueous medium, a specified organic substance which forms a complex with a transition metal, the complex catalysing bleaching of the substrate by atmospheric oxygen. Also provided is a bleaching composition comprising, in an aqueous medium, atmospheric oxygen and an organic substance which forms a complex with a transition metal, the complex catalysing bleaching of the substrate by the atmospheric oxygen, wherein the aqueous medium is substantially devoid of peroxygen bleach or a peroxy-based or -generating bleach system.
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Inventors:
HAGE RONALD
Application Number:
PCT/EP2000/012409
Publication Date:
November 08, 2001
Filing Date:
December 07, 2000
Export Citation:
Assignee:
UNILEVER PLC (GB)
UNILEVER NV (NL)
LEVER HINDUSTAN LTD (IN)
UNILEVER NV (NL)
LEVER HINDUSTAN LTD (IN)
International Classes:
C11D3/39; D06L3/00; D06L4/00; (IPC1-7): D06L3/00; D06L3/06; C11D3/395
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