Title:
COMPOSITION AND METHOD FOR BLEACHING A SUBSTRATE
Document Type and Number:
WIPO Patent Application WO2001064827
Kind Code:
A8
Abstract:
The invention relates to catalytically bleaching substrates,especially laundry fabrics, with atmospheric oxygen and a peroxyl species. 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 and a peroxyl species. 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 provided with a peroxygen bleach or a peroxy-based or peroxy-generating bleach system.
Inventors:
HAGE RONALD
SWARTHOFF TON
TETARD DAVID
THORNTHWAITE DAVID WILLIAM
SWARTHOFF TON
TETARD DAVID
THORNTHWAITE DAVID WILLIAM
Application Number:
PCT/EP2001/001694
Publication Date:
February 26, 2004
Filing Date:
February 15, 2001
Export Citation:
Assignee:
UNILEVER PLC (GB)
UNILEVER NV (NL)
LEVER HINDUSTAN LTD (IN)
UNILEVER NV (NL)
LEVER HINDUSTAN LTD (IN)
International Classes:
C11D3/16; C11D3/386; C11D3/39; C11D17/04; (IPC1-7): C11D3/39; C11D17/00
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