Method of dyeing with dispersible azo anilino dyestuffs
US4099909A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 7, 1977 |
| Grant date | Jul 11, 1978 |
| Priority date | — |
| Expiry date | Mar 7, 1997 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B29/08
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A class of dispersible phenyl-azo-aniline dyestuffs corresponding to the formula ##STR1## wherein A is phenyl substituted by halogen, cyano, nitro, lower alkylsulphonyl, lower alkoxycarbonyl, di-lower-alkyl-carbamoyl or di-lower-alkyl-sulfamoyl, PA1 X is hydrogen, lower alkyl or lower alkanoylamino, PA1 Y is halogen or lower alkoxy-carbonyl, PA1 Z is hydrogen or lower alkanoyl or chloroacetyl, Of R.sub.1 and R.sub.2 one R is hydrogen and the other R is lower alkyl, cyclohexyloxy-lower alkyl, phenyl-lower-alkoxy-lower alkyl, phenoxy-lower alkyl, lower alkanoyloxy-lower-alkyl, cyano-lower-alkyl, brominated lower alkyl, chlorinated lower alkyl, lower alkoxy carbonyl, cyclohexyl, phenyl or phenyl substituted by bromine, chlorine, lower alkyl or lower alkoxy. These dyestuffs are distinguished by good affinity and levelling and build-up properties especially for polyester fibres, affording dyeings on these fibres which have good fastness properties and especially good fastness to sublimation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.