发明名称 |
COMPOSITION AND METHOD FOR BLEACHING A SUBSTRATE |
摘要 |
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 ligand 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. |
申请公布号 |
WO0060043(A1) |
申请公布日期 |
2000.10.12 |
申请号 |
WO2000EP02587 |
申请日期 |
2000.03.22 |
申请人 |
UNILEVER PLC;UNILEVER NV;HINDUSTAN LEVER LIMITED |
发明人 |
APPEL, ADRIANUS, CORNELIS, MARIA;DELROISSE, MICHEL, GILBERT, JOSE;HAGE RONALD;TETARD, DAVID;TWISKER, ROBIN, STEFAN |
分类号 |
C07D213/38;C07D213/55;C07D401/14;C11D3/28;C11D3/39;D06L3/02 |
主分类号 |
C07D213/38 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|