[EN] COMPOSITION AND METHOD FOR BLEACHING A SUBSTRATE<br/>[FR] COMPOSITION ET PROCEDE DE BLANCHIMENT D'UN SUBSTRAT
申请人:UNILEVER PLC
公开号:WO2001016261A2
公开(公告)日:2001-03-08
The invention relates a method of bleaching a substrate that comprises applying to a substrate, in an aqueous medium, a specified ligand which forms a complex with a transition metal, the complex catalysing bleaching of the substrate by atmospheric oxygen. Also provided in an aqueous bleaching composition substantially devoid of peroxygen bleach or a peroxy-based or generating bleach system. Also provided is a method of treating a textile such as a laundry fabric whereby a complex catalyses bleaching of the textile by atmospheric oxygen after the treatment. The catalyst 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.