Compound black reactive dye composition, and applications thereof and fiber or fiber textile made thereby

Abstract

The invention relates to a compound black reactive dye composition, and applications thereof and a fiber or fiber textile made thereby, belonging to the field of reactive dyes. Particularly, the invention relates to a compound black reactive dye composition applicable to printing and dyeing cotton, rayon, hemp, regenerative fiber or textiles thereof, or to printing and dyeing polyamide fiber, cellulose fiber, protein fiber or textiles thereof. The invention further relates to applications of the compound black reactive dye composition, and fiber or fiber textile made by the compound black reactive dye composition.

Description

technical field [0001] This application relates to the field of reactive dyes. Specifically, the application relates to a composite black color suitable for printing and dyeing of cotton, rayon, hemp, regenerated fibers or their textiles, or suitable for printing and dyeing of polyamide fibers, cellulose fibers, protein fibers or their textiles. Reactive dye composition. The present application also relates to the use of the complex black reactive dye composition and the fiber or fiber textile made therefrom. Background technique [0002] In the dyeing of fibers, reactive dyes composed of ordinary red, yellow and blue are more likely to produce cylinder difference when dyeing black. Nowadays, active red, yellow, and blue dyes with vinyl sulfone double active groups containing monochloro-s-triazine are usually used to dye black. Due to their affinity to fibers, coloring rate, and color fixing rate, they are sensitive to salt and alkali. Sex, as well as the influence on the...

AI Technical Summary

Problems solved by technology

[0002] In the dyeing of fibers, reactive dyes composed of ordinary red, yellow and blue are more likely to produce cylinder difference when dyeing black.

Nowadays, active red, yellow, and blue dyes with vinyl sulfone double active groups containing monochloro-s-triazine are usually used to dye black. Due to their affinity to fibers, coloring rate, and color fixing rate, they are sensitive to salt and alkali. Sex, as well as the influence on the bath ratio and the sensitivity to temperature have certain differences, so the color and shade reproducibility of dyeing is poor, and the probability of repair is high, resulting in a substantial increase in dyeing costs

The reactive black dyes composed of ordinary red, yellow and blue reactive dyes are not ideal in washing fastness; currently, the reactive black dyes suitable for cold pad batch generally have low alkali resistance stability and low color fixation rate. Low, poor fastness and other issues

Such as the dye composition disclosed in Chinese patent CN1322064C, although the compatibility problem of the dye has been improved to a certain extent, and it has been improved in level dyeing and whitening convenience, but it is blended with nylon and cotton in dyeing depth. There are still some defects such as severe staining in the fabric, so it still cannot meet the needs of printing and dyeing factories when dyeing very dark colors

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