Method of bleaching textile fibers and activated bath for the cold bleaching of such fibers
US4141685A · kind A · utility
2Cited by
10References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 25, 1977 |
| Grant date | Feb 27, 1979 |
| Priority date | — |
| Expiry date | Jul 25, 1997 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD06L4/26
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A sodium chlorite bath for the bleaching of textile fibers, e.g. cotton, is activated by one or more bisulfite derivatives of an organic-reducing compound having one or more aldehyde or ketone functional groups and which are capable of forming bisulfitic combination addition compounds with an alkali bisulfite. Such activators have been found to be effective in bringing about the progressive decomposition of the sodium chlorite of the bath and hence controlled bleaching at relatively low temperatures of the sodium chlorite bath.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.