Process for the printing with developing dyes
US4057389A · kind A · utility
4Cited by
5References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 6, 1976 |
| Grant date | Nov 8, 1977 |
| Priority date | — |
| Expiry date | Apr 6, 1996 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S534/01
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Cellulosic material is printed with a paste containing the alkaline solution of a coupler, the dispersion of a diazotable aromatic amine, a nitrite and a thickener, and the dyestuff is developed on the fiber by adding solutions of organic acids and, after a short air passage, contacting the dyeing or print with an alkaline agent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.