Process for continuously fixing vat dyes on a textile web
US3981680A · kind A · utility
3Cited by
3References
3Claims
0Family size
Inventor
Key dates
| Filing date | Jan 17, 1975 |
| Grant date | Sep 21, 1976 |
| Priority date | — |
| Expiry date | Jan 17, 1995 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD06B3/18
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Savings in reductant are realized and effluent is reduced in the continuous process of steam fixing of vat dyes on textile web by expressing reductant-comprising liquor containing excess reductant from the web following the steam fixing step and applying expressed liquor, together with fresh reductant liquor, to web entering the fixing step.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.