FIELD: chemistry.
SUBSTANCE: disclosed is a method of producing mono- or disazo dyes based on methyl phloroglucinol (MPG), involving azo coupling of MPG and a diazonium salt at temperature (-)5 -(+)10°C, pH from less than 1 to 8 and molar ratio of MPG to the diazonium salt between 1:1 and 1:2.
EFFECT: recycling trinitrotoluene using an environmentally and technologically acceptable method to obtain dyes based on MPG with high output and high selectivity, having high resistance to physical and chemical effects compared to analogues on structure and application, for example, azo dyes based on p-cresol.
3 tbl, 15 ex
| Title | Year | Author | Number |
|---|---|---|---|
| DYES BASED ON 3,5-DINITROANILINE AND 2-AMINO-4,6-DINITROTOLUENE | 2004 |
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RU2273652C1 |
| METHOD OF COLD DYEING WITH INSOLUBLE AZO COLOURANTS OF FIBROUS MATERIALS | 2011 |
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| METHOD OF PRODUCING DIRECT BLACK DYE C | 2008 |
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| METHOD OF PRODUCING WATER SOLUBLE AZO DYES | 1992 |
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| METHOD OF PRODUCING ACID-BASIC INDICATOR FOR CREATING FLEXIBLE PH-SENSITIVE SYSTEMS | 2015 |
|
RU2626352C2 |
| 0 |
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SU149842A1 | |
| METHOD FOR SYNTHESIS OF AZO PRODUCTS OF 2-NAPHTHOL DERIVATES FROM AROMATIC AMINES IN AQUEOUS MEDIUM | 2015 |
|
RU2602812C1 |
| METHOD OF AZODYES SYNTHESIS | 1992 |
|
RU2047628C1 |
| METHOD OF SYNTHESIS OF 1-(PARA-R-PHENYLAZO)-3-NITRONAPHTHALENES | 1998 |
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RU2163611C2 |
| METHOD OF PREPARING POLYMERIC PRODUCTS FOR TREATMENT OF LEATHER | 1998 |
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RU2131443C1 |
