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 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.
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申请公布号 |
US6617299(B1) |
申请公布日期 |
2003.09.09 |
申请号 |
US20000539756 |
申请日期 |
2000.03.31 |
申请人 |
UNILEVER HOME & PERSONAL CARE USA, DIVISION OF CONOPCO, INC. |
发明人 |
CARINA RICCARDO FILIPPO;FERINGA BERNARD LUCAS;HAGE RONALD;HEMMERT CATHERINE;KOEK JEAN HYPOLITES;LACROIS RENE MARCEL;MEUNIER BERNARD;RENZ MICHAEL;ROELFES JOHANNES GERHARDUS;SCHUDDE EBE PIETER;THIJSSEN ROB;TWISKER ROBIN STEFAN;ZONDERVAN CHARON |
分类号 |
C07D213/38;C07D213/55;C07D401/14;C11D3/39;D06L3/02;(IPC1-7):C11D3/395;C11D7/54 |
主分类号 |
C07D213/38 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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