FIELD: chemical industry. SUBSTANCE: azo dyes are prepared by both diazotation and solid-phase azocombination in apparatus that assures inertia lad of 28-35 g, or in paste containing 35-76 % solid phase in reactor without pressure or at excessive pressure of at least 3 atm in the presence of plasticizer. The process makes it possible to reduce the number of side reactions and eliminate stage for producing final liquid mold. EFFECT: improved properties of the azo dyes.
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD FOR OBTAINING ACTIVE VINYLSULFONIC AZO DYES | 0 |
|
SU1659440A1 |
| ACTIVE AZODYES EXIBITING FUNGICIDAL ACTIVITY | 0 |
|
SU910703A1 |
| 0 |
|
SU167915A1 | |
| METHOD OF AZODYES SYNTHESIS | 1992 |
|
RU2047628C1 |
| METHOD FOR PREPARING CHROMIUM-PHOSPHORUS CONTAINING COMPOUNDS | 1992 |
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| DYES BASED ON 3,5-DINITROANILINE AND 2-AMINO-4,6-DINITROTOLUENE | 2004 |
|
RU2273652C1 |
| PROCESS FOR PREPARING ACID DIAZO DYE | 0 |
|
SU1113393A1 |
