Active navy blue to black dye composition and product

Abstract

The invention relates to active dye composition in dark blue to black and a dye product. The dye composition comprises, in parts by weight, 45-95 parts of a component A, 5-55 parts of a component B and 0-40 parts of a component C, wherein the component A is selected from at least one compound represented by the formula (I), the component B is selected from at least one compound represented by the formula (II), and the component C is selected from at least one compound represented by the formula (III) and / or the formula (IV). The active dye product in dark blue to black comprises the dye composition. The dye product is good in deep dyeing property, excellent in improvement power, high in dye up-take, high in color fixation, good in compatibility and excellent in color fastness; during dyeing, the dye is small in use amount, easy to wash, clear in residual liquid, stable in salt and alkali resistance, excellent in metamerism, stable in dyeing property and applicable to different technologies of dip dyeing, pad dyeing, printing and the like.

Description

(1) Technical field [0001] The invention relates to a reactive navy blue to black dye composition and dye products. (2) Background technology [0002] In cotton fiber dyeing, navy blue to black accounts for almost 40-50%, and more direct dyes and sulfur dyes are banned and restricted due to environmental protection issues. Reactive black KN-B is used in a large amount because of its low price, good fastness, high color fixation rate and easy washing, and there is no environmental protection problem including AOX. But there are also defects such as poor lifting force and insufficient blackness, which limit its wide use. [0003] The existing reactive navy blue or black dye color matching products still have problems such as poor dyeing depth, low dyeing rate and color fixation rate, and difficult cleaning of dyed fabrics in the actual application process, such as patents CN1745147A, CN1084769A, etc. This is due to the high concentration of dyes used in deep-color dyeing, th...

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Problems solved by technology

But at the same time, there are also defects such as poor lifting force and insufficient blackness, which limit its wide use.

[0003] The existing reactive navy blue or black dye color matching products still have problems such as poor dyeing depth, low dyeing rate and color fixation rate, and difficult cleaning of dyed fabrics in the actual application process, such as patents CN1745147A, CN1084769A, 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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