Aqueous alkaline, silicate-containing composition for bleaching cellulosic fibre materials in the presence of per compounds
US4751023A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 10, 1986 |
| Grant date | Jun 14, 1988 |
| Priority date | — |
| Expiry date | Jul 10, 2006 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD06L4/12
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A novel aqueous composition comprising PA0 (a) a mixture of monomeric and oligomeric compounds of the formula ##STR1## wherein Y.sub.1 is hydrogen or --CO--T.sub.1, R.sub.1, X.sub.1 and T.sub.1 are each independently C.sub.1 -C.sub.4 alkyl and m.sub.1 is an integer from 1 to 17, PA0 (b) a polyhydroxy compound, PA0 (c) an alkali metal silicate, PA0 (d) an alkali metal hydroxide, PA0 (e) a magnesium salt and PA0 (f) an alkali metal salt of an alkyldisulfonic, aryldisulfonic or alkaryldisulfonic acid. The composition is storage stable and is particularly suitable for use as bleaching activator and bleaching stabilizer for the pretreatment of cellulosic fibre materials with a bleaching liquor that contains a per compound.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.