Disperse diaminopyridine-3-azo dyestuffs
US4208324A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 7, 1978 |
| Grant date | Jun 17, 1980 |
| Priority date | — |
| Expiry date | Jul 7, 1998 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B29/3621
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Azo dyes which are free from acid water-solubilizing groups and correspond to the formula ##STR1## wherein two radicals Z represent groups of the formula --NR'R" and one of the radicals Z represent a group of the formulae --NR'R", OR'" or --S--R'", wherein R', R" and R'"each represents hydrogen, aryl, alkyl, aralkyl, cycloalkyl, an aliphatic or a heterocyclic radical and R' and R" are able to form a ring which contains the amino nitrogen, and the radicals --NR'R" may be the same or different, R is alkyl, substituted alkyl, cycloalkyl or substituted cycloalkyl, n is 1 or 2, Y represents a radical of the formulae --CN or --CONH.sub.2, and D is the radical of an aromatic or heterocyclic diazo component; the nucleus A containing three double bonds if n is 1 and two double bonds if n is 2. The new dyestuffs dye polyester fibres in yellow and red shades.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.