Positive ion reactive dye with aniline as coupling component and preparation method and application of positive ion reactive dye

Abstract

The present invention relates to a kind of cationic reactive dye whose coupling component is aniline and its preparation method and application, and the structural formula is: where R 1 =H, Cl or NO 2 ;R 2 =H, CH 3 or NO 2 ;R 3 =H, Cl or NO 2 , OCH 3 ;R 4 =H or Br. The preparation method includes: adding dimethyl sulfate dropwise to an aqueous solution of m-aminoacetanilide for reaction, cooling to room temperature, adding concentrated sulfuric acid, deacetylating to obtain intermediate A, adding dropwise to an acetone solution of cyanuric chloride, and reacting to obtain Intermediate B is added dropwise with a dilute hydrochloric acid solution of aniline to react to obtain a coupling component reaction solution C; the diazotization reaction solution of an amino-containing aniline compound is added dropwise to react, filtered, rinsed, and dried. The cationic reactive dye whose coupling component is aniline of the present invention is applied to the dyeing of single-component fiber fabrics and the one-bath dyeing of multi-component fiber fabrics, and has the advantages of water saving, energy saving, ecological environment protection and the like.

Description

technical field [0001] The invention belongs to the field of dye synthesis and textile dyeing, in particular to a cationic reactive dye whose coupling component is aniline, 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 and simple care. Adding part of...

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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