Bleaching compositions and method for bleaching substrates directly with air
US6117833A · kind A · utility
6Cited by
14References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 16, 1998 |
| Grant date | Sep 12, 2000 |
| Priority date | — |
| Expiry date | Dec 16, 2018 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD06L4/10
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A bleach composition and a method for bleaching stains is provided, the composition including a C.sub.7 -C.sub.20 aromatic aldehyde and an imide, the latter being particularly N-hydroxyphthalimide. Air is employed as a source of oxygen which combines with the aldehyde to form the bleach active species. Peroxides, inorganic persalts and bleach precursors are unnecessary elements for the bleach systems of this invention.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.