FIELD: varnish-and-paint industry.
SUBSTANCE: invention discloses azo dyes based on diazotized 3,5-dinitroaniline or 2-amino-4,6-dinitrotoluene with β-naphthol or Azotol A as azo components. These dyes possess elevated heat resistance as compared to known similar-structure dyes based on mono- or dinitroaniline as diazo components, for example pigment Orange 3 and pigment Red 3, which allows their use for dyeing synthetic fibers in bulk.
EFFECT: expanded application possibilities.
5 cl, 4 tbl, 4 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF OBTAINING AZO DYES | 1992 |
|
RU2054441C1 |
| PROCESS FOR PREPARING AROMATIC 2-BROMOSUBSTITUTED DIAZO CONSTITUENTS | 1989 |
|
RU1804079C |
| 0 |
|
SU167915A1 | |
| METHOD OF SYNTHESIS OF 1-(PARA-R-PHENYLAZO)-3-NITRONAPHTHALENES | 1998 |
|
RU2163611C2 |
| PROCESS FOR PRODUCING MONAZO DYESTAFFS | 0 |
|
SU910701A1 |
| METHOD OF PREPARING AZO DYES | 1998 |
|
RU2155782C2 |
| METHOD OF PREPARING LEATHER-WORKING POLYMER PRODUCTS | 2000 |
|
RU2191787C2 |
| METHOD OF PRODUCING DIRECT BLACK DYE C | 2008 |
|
RU2413744C2 |
| 0 |
|
SU457227A3 | |
| METHOD FOR PREPARING CHROMIUM-PHOSPHORUS CONTAINING COMPOUNDS | 1992 |
|
RU2068428C1 |
