Reactive black dye composition and dye product

Abstract

The invention relates to a reactive black dye composition and a dye product. The reactive black dye composition includes, by weight, 45-95 parts of a component A, 5-55 parts of a component B and 0-40 parts of a component C, the component A is selected from at least one compound represented by formula (I), the component B is selected from at least one compound represented by formula (II), and the compound C is selected from at least one compound represented by formula (III) and / or formula (IV). The reactive black dye product includes the reactive black dye composition. The product has the advantages of good deep dyeing property, excellent lifting force, high color fixing rate, good compatibleness, excellent color fastness, realization of less dye dosage, easy water washing and clear raffinate in the printing and dyeing process, stable saline-alkaline resistance, stable dyeing performance, and suitableness for dip dyeing, pad dyeing, printing and other technologies.

Description

(1) Technical field [0001] The invention relates to a reactive black dye composition and dye products. (2) Background technology [0002] Black dyes have always been the color spectrum with the largest amount of dyes. In the dyeing and printing of cotton fabrics, the black color spectrum accounts for about 50% of the total color spectrum. dye products. Today, C.I. reactive black 5 accounts for a large proportion in the black color spectrum, but it has disadvantages such as low affinity to fibers, low color fixation rate, and unsatisfactory blackness. Therefore, to obtain a good black reactive dye, it must be compounded with multi-component dyes made. [0003] However, the existing reactive black dye color matching products still have problems such as weak dyeing depth and low color fixation rate, and difficult cleaning of dyed fabrics in the actual application process, such as patents CN1195678A, CN103194091A, CN1858118A, etc. This is due to the high concentration of dyes...

AI Technical Summary

Problems solved by technology

Today, C.I. reactive black 5 accounts for a large proportion in the black color spectrum, but it has disadvantages such as low affinity to fibers, low color fixation rate, and unsatisfactory blackness. Therefore, to obtain a good black reactive dye, it must be compounded with multi-component dyes Made

[0003] However, the existing reactive black dye color matching products still have problems such as weak dyeing depth and low color fixation rate, and difficult cleaning of dyed fabrics in the actual application process, such as patents CN1195678A, CN103194091A, CN1858118A, etc.

This is due to the high concentration of dyes used in deep-color dyeing, the amount of floating dyes increases, and the adsorption of dyes to fibers has a saturation value. Generally, the concentration of dyes should not exceed 10% of the saturation value of dyeing. Excessive dyes cannot be dyed and fixed. It will accumulate on the surface of the fabric. If the ease of cleaning is not good, it will inevitably affect the wet fastness of the dyed fabric, resulting in poor dyeing performance

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