Bleaching with polyoxometalates and air or molecular oxygen
US6074437A · kind A · utility
7Cited by
10References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 5, 1999 |
| Grant date | Jun 13, 2000 |
| Priority date | — |
| Expiry date | Mar 5, 2019 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD06L4/13
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.