Process for the dyeing of fibre material
US4340387A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 30, 1980 |
| Grant date | Jul 20, 1982 |
| Priority date | — |
| Expiry date | Dec 30, 2000 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S8/932
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An improved process for dyeing of fibre material, especially textile fibres, by applying to the fibre material at a temperature below the absorption temperature of the dyestuffs and with a goods-to-liquor ratio of 1:1.5 to 1:4, a concentrated aqueous dye liquor, said concentrated aqueous dye liquor containing at least one dyestuff which, in the case of the substrate to be dyed, has affinity to the fibres and which is either soluble or dispersible in water, and 0.2 to 10 g/l, preferably 2 to 5 g/l, of a surface-active agent, and finishing of the dyeing by means of a heat treatment, e.g. introduction of saturated steam, superheated steam or hot air, preferably by heating from without, at temperatures of 95.degree. to 140.degree. C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.