The invention discloses a reducing olive T dye synthesizing
novel technique. The technique comprises the following steps: firstly, 3, 9-dibromo
benzanthrone, 1-aminoanthraquinone, calcined soda and
copper oxides are placed into a
solid-phase condensation device; after mixing,
dehydration, temperature rise, heat preservation,
condensation reaction and crushing, condensation compound T
imine is obtained; secondly, the ring-closure reaction of the condensation compound T
imine is generated in a ring-formed medium and then a reducing olive T filter
mass is obtained after
dilution, oxidation, water scrubbing in a filter and blowing; thirdly, after remixing, sand
grinding,
standardization and
drying of raw dye through addition agent, a commodity is prepared, wherein, the ring-closure reaction is to use reducing deep-blue BO raw dye mother solution after
evaporation and concentration as ring forming agent and to perform ring forming reaction with the
imine. The reducing olive T dye synthesizing
novel technique has the advantages that: the reducing deep-blue BO mother solution which is produced by the company is recycled and used for ring closure of the reducing olive T, thereby not only greatly reducing the production cost of the raw dye and improving the product quality but also reducing
pollution and emission of the three wastes. Moreover, the olive T imine also can be cycled and concentrated for use after passing through filter
mass washing mother solution after ring closure.