Novel reactive blue dye and preparation method thereof

Abstract

The invention discloses a novel reactive blue dye and a preparation method of the novel reactive blue dye. The preparation method of the compound comprises the following steps: performing condensation on cyanuric chloride and 2-[2-(4-aminobenzenesul fonamide) ethyl sulfuryl] ethoxyl-sulphating compound and then performing secondary condensation on an obtained condensation compound and 2,4-diaminobenzenesulfonic acid; reducing the temperature of the condensate and performing diazotization; performing acid coupling on the condensate and H acid; then performing alkali coupling on the condensate and diazonium salt of sodium sulfamate or 2,5-disulfonic acid-phenylamine; spraying and drying to obtain a semi-finished product. The reactive blue dye has the characteristics of bright and deep color, high dissoluvability, high compatibility, high elevating power, high fixation rate, high firmness degree of all items and the like; the dye is suitable for coloring, printing and pad-dyeing of cellulosic fibers, protein fibers, viscose fibers and polyamide, and the color fasteness to sunlight and the fastness to rubbing of the novel reactive blue dye are 0.5-1 grade more than those of the general varieties.

Description

technical field [0001] The invention relates to the technical field of fine chemicals, in particular to a novel reactive blue dye and a preparation method thereof. Background technique [0002] Blue reactive dye is one of the three primary colors in reactive dyes, the main products are C.I reactive deep blue 194 (reactive deep blue M-2GE), C.I reactive brilliant blue 19 (reactive brilliant blue KN-R), C.I reactive brilliant blue 49 (Active Brilliant Blue SPR), C.I Active Brilliant Blue 74 (Active Brilliant Blue KE-R), etc. Although these blue varieties can be dyed on cellulose fibers to obtain shades of different vividness, C.I Active Brilliant Blue 74 ( Reactive Brilliant Blue KE-R) is light blue, poor dyeing depth, high energy consumption, and low color fixation rate of only 60%; C.I Reactive Brilliant Blue 49 (Reactive Brilliant Blue SPR) can only be used as printing and cannot be dyed, and the shade is partial Red, color fixation rate 62%-65%; C.I Reactive Brilliant Blu...

AI Technical Summary

Problems solved by technology

[0002] Blue reactive dye is one of the three primary colors in reactive dyes, the main products are C.I reactive deep blue 194 (reactive deep blue M-2GE), C.I reactive brilliant blue 19 (reactive brilliant blue KN-R), C.I reactive brilliant blue 49 (Active Brilliant Blue SPR), C.I Active Brilliant Blue 74 (Active Brilliant Blue KE-R), etc. Although these blue varieties can be dyed on cellulose fibers to obtain shades of different vividness, C.I Active Brilliant Blue 74 ( Reactive Brilliant Blue KE-R) is light blue, poor dyeing depth, high energy consumption, and low color fixation rate of only 60%; C.I Reactive Brilliant Blue 49 (Reactive Brilliant Blue SPR) can only be used as printing and cannot be dyed, and the shade is partial Red, color fixation rate 62%-65%; C.I Reactive Brilliant Blue 19 (Reactive Brilliant Blue KN-R) can be dyed to obtain shades of different vividness, but it is often caused by hydrolysis of soda ash or caustic soda vinyl sulfone sulfate when fixing the color. Stains and stains appear on the surface of the fiber, and at the same time, the cost is high and the cost performance is poor, which is difficult for printing and dyeing users to accept

C.I active deep blue 194 (active deep blue M-2GE) is produced by salting out the finished product, which produces a large amount of waste water and pollutes the environment; the dyeing shade is not bright, the color is not deep, and the poor washability leads to light fastness and water resistance. Poor rubbing fastness

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