Antiseptic active cationic dye and its preparing method

Abstract

The invention relates to a class of antibacterial cationic reactive dyes and a preparation method thereof. The dye matrix is ​​an anthraquinone structure, the active group is a chloro-s-triazine or a fluoro-s-triazine, and the water-soluble group is a quaternary ammonium salt structure with a long carbon chain. The chemical structure is as follows: This type of dye can be used for cellulose fibers , protein fiber, polyamide fiber, acrylic fiber, cationic dyeable polyester fiber dyeing and antibacterial finishing, with high antibacterial effect, excellent color fastness, antibacterial durability. The preparation method of the dye includes: a. dissolving aminoanthraquinone A and trichloro or trifluoro-s-triazine in a nitrobenzene organic solvent, heating to 90°C, rising to 120°C after 1 hour, cooling and filtering to obtain the dye intermediate B; b. Dissolve the dye intermediate B prepared in step a in DMF organic solvent, add tertiary amine intermediate C, react at 55°C for 3-4 hours, evaporate the solvent DMF to obtain dye intermediate D, and dry it in vacuum c. Dissolve the dye intermediate D obtained in step b in DMF organic solvent, add haloalkyl E, heat to about 120°C, react for 4-5 hours, evaporate the solvent DMF, wash with ether, and recrystallize with ether-ethanol , Dye F was obtained and dried in vacuum. When this type of dye is used for textile dyeing, it can also endow textiles with certain functions, and has the advantages of water saving, energy saving, and ecological protection.

Description

technical field [0001] The invention belongs to the fields of dye synthesis, textile dyeing and finishing, and in particular relates to an antibacterial cationic active dye and a preparation method thereof. Background technique [0002] Textile dyeing and finishing are two important wet processing processes, while traditional textile dyeing and finishing are carried out separately, which has the disadvantages of high cost, high energy consumption and large amount of sewage discharge. The dyeing and finishing technology that combines dyeing and functional finishing in one bath is of great significance for reducing production costs, saving energy, reducing waste water discharge, and protecting the ecological environment. Therefore, many experts at home and abroad have carried out a lot of research in this field, and have achieved certain results in the research of dyeing, antistatic, flame retardant, anti-ultraviolet, shrink-proof and anti-wrinkle finishing in one bath. Howev...

AI Technical Summary

Problems solved by technology

However, the dye lacks affinity for cotton fibers, and because the quaternary ammonium salt in the molecule is combined with the dye parent through an amide bond, it is easily hydrolyzed, so that the dye loses its antibacterial properties

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