Process for bleaching cellulosic fibre materials using oligomers of phosphonic acid esters as stabilizers in alkaline, peroxide-containing bleaching liquors
US4496472A · kind A · utility
9Cited by
11References
23Claims
0Family size
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Key dates
| Filing date | Dec 17, 1982 |
| Grant date | Jan 29, 1985 |
| Priority date | — |
| Expiry date | Dec 17, 2002 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD06L4/12
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Oligomers of the formula ##STR1## wherein Y.sub.1 is hydrogen or --CO--T.sub.1, R.sub.1 Q.sub.1 and T.sub.1 are alkyl and n.sub.1 is 1 to 16, or alkali metal salts thereof, are used as stabilizers in peroxide-containing alkaline liquors for bleaching cellulosic fibre materials.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.