Process for dyeing textile material of polyester fiber/cellulose blends
US3961884A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 12, 1974 |
| Grant date | Jun 8, 1976 |
| Priority date | — |
| Expiry date | Sep 12, 1994 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD06P3/8257
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Process for the continuous dyeing of polyester fiber/cellulose blends with disperse dyestuffs and water-insoluble azo developing dyestuffs by padding the fibrous material with an aqueous solution of at least one ice-color coupling component, an alkaline agent and an alkali metal nitrite, then cross-padding the material so impregnated with a second aqueous bath of room temperature which contains at least one diazotizable amine, at least one thermosolable disperse dyestuff and an acidifier, and finally successively promoting the formation of the azo dyestuff by diazotizing and coupling as well as fixing the disperse dyestuff with the aid of elevated temperature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.