Monoazo disperse dyes containing a nitrophenyl group and a homophthalimide group
US4315855A · kind A · utility
8Cited by
8References
1Claims
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Key dates
| Filing date | Jul 22, 1976 |
| Grant date | Feb 16, 1982 |
| Priority date | — |
| Expiry date | Jul 22, 1996 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B31/157
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Dyes of the formula ##STR1## where X and Y, for example, can be hydrogen or halogen and R can be alkyl among other substituents. The dyes are derived from an O-nitroaniline diazo component and an N-substituted homophthalimide as coupling component. The dyes are greenish yellow to orange and give clear dyeings of good color strength and having good general fastness properties on polyesters, cellulose esters and in some cases also on polyamides. The fastness to light and the fastness to heat setting are excellent and may easily be influenced by the choice of substituents.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.