申请人:Unilever Home & Personal Care USA, Division of Conopco, Inc.
公开号:US20030050211A1
公开(公告)日:2003-03-13
There is provided an enzymatic detergent composition which comprises:
(a) surfactant;
(b) 10-20,000 LU per gram of the detergent composition of a lipolytic enzyme obtainable from
Humicola lanuginosa, Pseudomonas pseudoalcaligenes, Rhizomucor miehei
and
(c) a non-cross-bridged polydentate N-donor ligand capable of forming a complex with a transition metal, wherein said complex is capable of catalysing the bleaching of stains on fabrics by means of atmospheric oxygen.
[EN] COMPOSITION AND METHOD FOR BLEACHING A SUBSTRATE<br/>[FR] COMPOSITION ET PROCEDE POUR BLANCHIR UN SUBSTRAT
申请人:UNILEVER PLC
公开号:WO2000060044A1
公开(公告)日:2000-10-12
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 ligand from a selected class which forms a complex with a transition metal, the complex catalysing bleaching of the substrate by atmospheric oxygen. Also provided is 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. The method can confer cleaning benefits to the textile after the treatment. Also provided is a dry textile having a catalyst applied or deposited thereon, whereby bleaching by atmospheric oxygen is catalysed on the textile.