室温下水在H 2 O 2活化以及非血红素Fe III -OOH和Fe III -O-Fe III配合物的形成和反应中的冲突作用
摘要:
报道了在室温下通过配合物1([(MeN3Py)Fe II(CH 3 CN)2 ] 2+)与H 2 O 2反应形成Fe III -OOH的物种,并通过UV / UV的组合进行了研究。吸收,EPR和共振拉曼光谱。Fe III -OOH物种的形成及其随后转化为相对惰性的Fe III -O-Fe III的形式可见,这些物种高度依赖于水的浓度,过量的水有利于后者的形成,这也通过紫外/可见吸收光谱电化学研究。乙酸的存在增加了1氧化为铁(III)态的速度和程度,并抑制了H 2 O 2的无用分解,但不会显着影响所形成的Fe III -OOH物种的光谱性质。
The present invention relates to a method of generating chlorine dioxide from chlorite salts in the presence of a manganese ion-containing complex, a method of treating a substrate with a chlorine-containing oxidant in the presence of a manganese ion- containing complex and related aqueous media, kits and compositions.
Bleaching and dye transfer inhibiting composition and method for laundry fabrics
申请人:Unilever Home & Personal Care USA, Division of Conopco, Inc.
公开号:US20020010121A1
公开(公告)日:2002-01-24
A bleaching composition for laundry fabrics is provided, comprising:
hydrogen peroxide or a source of hydrogen peroxide;
a bleach catalyst comprising a ligand which forms a complex with a transition metal, the complex catalysing bleaching of stains in the presence of peroxygen bleach or a peroxy-based or -generating bleach system; and
a dye transfer inhibiting agent.
The bleaching composition provides effective bleaching performance on fabric stains without unacceptable transfer of dyes between fabrics.
申请人:Unilever Home & Personal Care USA, Division of Conopco, Inc.
公开号:US20030045442A1
公开(公告)日:2003-03-06
The invention relates to a liquid bleaching composition for catalytically bleaching substrates, especially laundry fabrics, with atmospheric oxygen or air. A liquid bleaching composition is provided comprising an organic substance which forms a complex with a transition metal, the complex catalysing bleaching of a substrate by atmospheric oxygen, and a liquid carrier or solvent, wherein the composition is substantially devoid of peroxygen bleach or a peroxy-based or -generating bleach system. Also provided is a method of bleaching a substrate comprising applying the liquid bleaching composition to the substrate. Also provided is a method of treating a textile by contacting the textile with the liquid bleaching composition, whereby the complex catalyses bleaching of the textile by atmospheric oxygen after the treatment.
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.
Composition and method for bleaching laundry fabrics
申请人:Unilever Home & Personal Care USA, Division of Conopco, Inc.
公开号:US20020013246A1
公开(公告)日:2002-01-31
A bleaching composition for laundry fabrics is provided, comprising:
hydrogen peroxide or a source of hydrogen peroxide;
a bleach catalyst comprising a ligand which forms a complex with a transition metal, the complex catalyzing bleaching of stains in the presence of peroxygen bleach or a peroxy-based or -generating bleach system; and
less than 4.0% by weight of a peroxyacid bleach precursor.
The bleaching composition provides effective bleaching performance on fabric stains without causing unacceptable dye damage or dye fading of the fabrics after repeated washes.