Cationic reactive dye using N,N-diethyl-m-amino aniline as coupling component and preparation method and application thereof

Abstract

The invention relates to a cationic reactive dye using N,N-diethyl-m-amino aniline as a coupling component and a preparation method and application thereof.The cationic reactive dye has a following structural formula, wherein R1 is H, Cl or NO2; R2 is H, CH3 or NO2, R3 is H, Cl, NO2 or OCH3; R4 is H or Br.The preparation method comprises: dissolving m-aminoacetanilide in water, dropwise adding dimethyl sulfate at 60-70 DEG C, reacting and then adding concentrated sulfuric acid, and reacting to obtain intermediate A; dropwise adding to acetone solution of cyanuric chloride, reacting to obtain intermediate B, dropwise adding dilute hydrochloric acid solution of N,N-diethyl-m-amino aniline, reacting to obtain a coupling component, reaction liquid C, dropwise adding diazotization liquid amino-containing aniline compounds, and reacting and then filtering, washing and drying to obtain the dye.The dye of the invention is useful one-bath dyeing of multi-component fiber fabric and has the advantages such as water saving, energy saving, ecology and environmental friendliness.

Description

technical field [0001] The invention belongs to the field of dye synthesis and textile dyeing, and particularly relates to a cationic reactive dye whose coupling component is N,N-diethyl-m-aminoaniline, a preparation method and application thereof. Background technique [0002] Along with the continuous emergence of novel fibers, the development of new textile fabric varieties has sprung up. Multi-component fiber blended and interwoven textile fabrics integrate the advantages of various fibers. They have excellent wearability and can meet different individual needs. They are favored by consumers and have become mainstream products in the market. Fabrics designed and developed with a variety of fibers can achieve effects that cannot be achieved by chemical finishing. For example, adding 2-5% Lycra to cotton and wool fibers can significantly improve the anti-wrinkle performance of natural fibers, washable and wearable properties, and achieve the purpose of easy maintenance an...

AI Technical Summary

Problems solved by technology

Due to the complex composition of multi-component fiber fabrics, the dyeing performance and physical and chemical properties of the fibers are different, so the dyeing process is complicated, the energy consumption is large, the cost is high, and there is great damage to the fibers.

Different types of dyes may also affect the shade and fastness of each other, making it difficult to achieve better dyeing results

For example, traditional wool / acrylic blended fabrics use different dyes to dye different fibers. Cationic dyes are used for acrylic fibers, while anionic dyes such as acid dyes, acid mordant dyes or some reactive dyes are used for wool. The two types of dyes are prone to static electricity in the dye bath. Gravitational force forms lakes, which affect dyeing quality and fastness

In order to avoid the generation of lake, a large amount of anti-sedimentation agent needs to be added in the dyeing process, which not only increases the production cost but also increases the burden of waste water

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