Process for the production of water-insoluble azo dyestuffs on the fiber
US4082503A · kind A · utility
3Cited by
3References
1Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 3, 1976 |
| Grant date | Apr 4, 1978 |
| Priority date | — |
| Expiry date | Aug 3, 1996 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD06P3/68
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
It had been found that boric acid can advantageously be used as a buffer and neutralization agent in the developing bath containing the azonium compound in a process for the preparation of water-insoluble azo dyestuffs on the fiber according to the ice-color technique, thus avoiding ecological problems with regard to the waste water obtained in the dyeing process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.