Bleaching with polyoxometalates and air or molecular oxygen

Details Bleaching with polyoxometalates and air or molecular oxygen Bleaching with polyoxometalates and air or molecular oxygen

1999-03-05

2000-06-13

Gupta, Yogendra

Bleaching and dyeing; fluid treatment and chemical modification

Bleaching

Chemical

510302, 510367, 25218443, D06L 302

Patent

active

060744375

ABSTRACT:
A method for bleaching laundry and household surfaces is provided which iudes preparing a wash medium with a bleaching composition incorporating polyoxometalates and being free of any effective amount of a bleaching agent such as hydrogen peroxide, organic peracids, inorganic peracids, organic persalts, inorganic persalts, Caro's acid, Caroates and mixtures thereof. A second step involves contacting a stained substrate such as a fabric, kitchenware or a household hard surface for a time and in an amount sufficient to remove the stains. Air is employed as a primary source of oxygen atoms for bleaching.

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