Reactive blue-to-black dye composition and dye product

Abstract

The invention discloses a reactive blue-to-black dye composition and a dye product. The reactive blue-to-black dye composition comprises a component A, a component B and a component C. The component A is selected from at least one of dye compounds shown in a formula (I) and alkali metal salts thereof, and the component B is selected from at least one of dye compounds shown in a formula (II) and alkali metal salts thereof. And the component C is selected from at least one of dye compounds as shown in formulas (III)-(IV) and alkali metal salts thereof. The invention provides a reactive blue to black dye product which comprises the reactive blue to black dye composition. Compared with conventional reactive black, the reactive blue-to-black dye product disclosed by the invention has the advantages that the strength is higher by 60% or above, the dye is extremely high in deep dyeing property and fixation rate, the use amount of the dye can be greatly reduced, various color fastnesses are excellent, particularly the washing fastness is outstanding, and the reactive blue-to-black dye product is suitable for printing and dyeing nitrogen-containing and / or hydroxyl-containing fiber materials and blended fabrics thereof.

Description

(1) Technical field [0001] The invention relates to a reactive dye composition and a dye product, in particular to a reactive blue to black dye composition and a dye product suitable for printing and dyeing nitrogen-containing and / or hydroxyl-containing fiber materials. (2) Background technology [0002] Blue to black is the most important color in reactive dyes, accounting for more than 50% of the total output of reactive dyes. Conventional blue to black reactive dyes are widely used to compound C.I. reactive black 5 and various reactive oranges. Although the blackness has been improved to a certain extent, the amount of dye is more than 10%, and the utilization rate of dye is low, resulting in increased floating color. The fastness is poor and the COD of the dyeing residue is high, which can not meet the needs of printing and dyeing enterprises for extra deep black, and also increases the pressure of sewage treatment. (3) Contents of the invention [0003] In order to s...

AI Technical Summary

Problems solved by technology

Conventional blue to black reactive dyes are widely used to compound C.I. reactive black 5 and various reactive oranges. Although the blackness has been improved to a certain extent, the amount of dye is more than 10%, and the utilization rate of dye is low, resulting in increased floating color. The fastness is poor and the COD of the dyeing residue is high, which can not meet the needs of printing and dyeing enterprises for extra dark black, but also increases the pressure of sewage treatment

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