发明名称 |
METHOD OF PRETREATING AND BLEACHING STAINED FABRICS |
摘要 |
A method for bleaching stained fabrics is provided by pretreating the stained fabric, before washing, with a pretreatment composition that comprises a ligand that forms a transition metal complex as bleach catalyst, the complex catalysing bleaching of stains by atmospheric oxygen. The pretreatment composition preferably comprises an iron complex comprising the ligand N,N-bis(pyridin-2-yl-methyl)-1,1-bis(pyridin-2-yl)-1-aminoethane. One or both of the pretreatment composition and the wash liquor are substantially devoid of peroxygen bleach or a peroxy-based or -generating bleach system. The pretreatment provides improved or broader stain profile bleaching. |
申请公布号 |
EP1208184(A1) |
申请公布日期 |
2002.05.29 |
申请号 |
EP20000951477 |
申请日期 |
2000.08.04 |
申请人 |
UNILEVER PLC;UNILEVER N.V. |
发明人 |
DELROISSE, MICHEL GILBERT JOSE;JONES, DAVID ANDREW ROSS;SMITH, RICHARD GEORGE;WELLS, JOHN FRANCIS |
分类号 |
C07D213/38;C07D213/55;C07D401/14;C11D3/39;D06L3/02 |
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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