Use of water-soluble disazo dyestuffs for dyeing or printing synthetic textile material of polyamide or polyurethane fibers
US4052157A · kind A · utility
4Cited by
3References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 8, 1975 |
| Grant date | Oct 4, 1977 |
| Priority date | — |
| Expiry date | Dec 8, 1995 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S8/926
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Use of a water-soluble disazo dyestuff of the formula ##STR1## in which R.sub.1 represents a hydrogen atom or the sulfonic acid group, R.sub.2 represents a chlorine atom or the methoxy group, and R.sub.3 and R.sub.4 each represents a hydrogen atom or a methoxy group, for the dyeing or printing of synthetic textile material consisting of or containing polyamide or polyurethane fibers, the dyestuff used yielding on the said fibrous material excellent, clear golden-yellow to orange dyeings or prints being distinguished by very good properties as to fastness to light and to wetting.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.