Dye composition as well as preparation method and application thereof

Abstract

The invention belongs to the technical field of dyes, and discloses a dye composition as well as a preparation method and application thereof. The dye composition is prepared from the following components in parts by weight: 1 to 45 parts of yellow dye, 1 to 45 parts of red dye and 18 to 90 parts of blue dye, the structural formula of the yellow dye is shown in the specification, the structural formula of the red dye is shown in the specification, and the structural formula of the blue dye is shown in the specification. Various dyes in the dye composition are good in compatibility and uniform in dyeing, and the dyed fabric is full in hue and good in color fastness to rubbing, color fastness to washing and color fastness to alkali perspiration.

Description

technical field [0001] The invention belongs to the technical field of dyes, in particular to a dye composition and its preparation method and application. Background technique [0002] Cationic dyes are a kind of textile dyes, also known as basic dyes and salt-based dyes, which are in a cationic state when dissolved in water. They are mainly used for acrylic fiber dyeing, and can also be combined with protein molecules with salt and alkali. Cationic dyes Soluble in water, ionized in aqueous solution to generate dyes with positively charged colored ions, the cations of the dyes can combine with the acidic groups of the third monomer in the fabric to dye the fabric fibers. Cationic dyes are mainly used for dyeing acrylic fibers. [0003] Due to the high affinity between cationic dyes and acrylic fiber, the combination is firm, so the fastness is high. Once the dye is dyed, it is difficult for the dye molecules to migrate from the area with high dyeing concentration to the ar...

AI Technical Summary

Problems solved by technology

[0004] However, in the existing related technologies, due to the large difference in the compatibility between the dyes, when the composite cationic dyes are dyed, due to the large difference in the affinity between each dye and the fiber, the dyes with high affinity compete for more dyeing seats. The more dyes adsorbed, the greater the concentration difference with the inside of the fiber, the faster the diffusion, and the faster the dyeing speed, the dyes with low affinity compete for less dyeing seats, the less dye adsorption, the smaller the concentration with the inside, and the slower the dyeing. Therefore, the dyeing rate of various dyes varies greatly. Even if ordinary retarders are added, it is still easy to produce colored flowers, affecting the shade of the fabric, and the color fastness to rubbing, color fastness to washing, and alkali resistance to perspiration after dyeing poor color fastness

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