Liquid preparations of reactive dyestuffs
US4149850A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 3, 1978 |
| Grant date | Apr 17, 1979 |
| Priority date | — |
| Expiry date | Feb 3, 1998 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD06P3/8204
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present invention provides liquid, aqueous dyeing preparations of a reactive dyestuff which in form of the free acid corresponds to the formula ##STR1## each containing 5 to 35% by weight of one of the aforesaid dyestuffs and furthermore 1 to 5% by weight of buffer substances which are not capable of reacting chemically with the reactive group and thus reducing the dyestuff yield, and having a pH-value of from 3 to 7, said dyeing preparations being suitable for the dyeing and printing of fiber materials on the basis of wool, silk, polyamide and natural or regenerated cellulose, according to the process which is common for reactive dyestuffs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.