Qin X Chen

US Patent:

60744375, Jun 13, 2000

Filed:

Mar 5, 1999

Appl. No.:

9/264191

Inventors:

Uday Shanker Racherla - West Caldwell NJ
Qin Chen - Westerville OH

Assignee:

Unilever Home & Personal Care USA, Division of Conopco, Inc. - Greenwich CT

International Classification:

D06L 302

US Classification:

8111

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.