Activation of bleach precursors with imine quaternary salts
US5478357A · kind A · utility
41Cited by
11References
11Claims
0Family size
Assignee
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Key dates
| Filing date | Jul 21, 1994 |
| Grant date | Dec 26, 1995 |
| Priority date | — |
| Expiry date | Jul 21, 2014 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11D3/3927
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A bleaching composition is described that includes a peroxygen compound such as sodium perborate, an oxygen transfer agent in the form of a quaternary imine salt and a bleach precursor. The quaternary imine salt at relatively low concentrations enhances 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.