Activation of bleach precursors with sulfonimines
US5047163A · kind A · utility
49Cited by
13References
38Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 16, 1990 |
| Grant date | Sep 10, 1991 |
| Priority date | — |
| Expiry date | Mar 16, 2010 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11D3/392
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A bleaching composition is described that includes a peroxygen compound such as sodium perborate, an oxygen transfer agent such as a sulfonimine, and a bleach precursor such as TAED. These sulfonimines at relatively low concentrations enhance the activity of the precursor. A method for bleaching substrates is also provided, especially a method for cleaning fabrics.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.