Substituted 2-(chloro, bromo or cyano)-4,6-dinitrophenyl azo phenyl dyes
US4447359A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 17, 1980 |
| Grant date | May 8, 1984 |
| Priority date | — |
| Expiry date | Mar 17, 2000 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B29/08
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
There are described new blue to navy blue monoazo dyes of the general formula I ##STR1## in which X is chlorine, bromine or cyano, R is an unsubstituted or substituted alkyl group having 1 to 4 carbon atoms, R.sub.1 and R.sub.2 independently of one another are each an alkyl group which has 1 to 4 carbon atoms and which is unsubstituted or substituted by lower alkoxy, aryloxy or aryl, or an unsubstituted or substituted phenyl group, Y is lower alkyl or lower alkoxy, and n is an integer of at most 4; processes for producing them; and their use for dyeing and printing hydrophobic materials, especially aromatic polyesters, the resulting dyeings being level deep and reproducible, while additionally distinguished by good general fastness properties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.