Low-temperature dyeing auxiliary agent of wool or cashmere reactive dye as well as preparation method and application of low-temperature dyeing auxiliary agent

Abstract

The invention discloses a low-temperature dyeing auxiliary agent of wool or cashmere reactive dye as well as a preparation method and application of the low-temperature dyeing auxiliary agent. The low-temperature dyeing auxiliary agent comprises the following raw materials by mass percentage of 20.0%-40.0% of a cationized peregal O-10 solution, 10.0%-20.0% of peregal O-20 and 40.0%-70.0% of water, and the sum of the content of the above components is 100% The invention further discloses a method for carrying out Lanasol reactive dye low-temperature dyeing on wool and cashmere fibers by adopting the low-temperature dyeing auxiliary agent, the low-temperature dyeing auxiliary has the functions of low-temperature dyeing acceleration, level dyeing and wetting permeability, the dyeing temperature is reduced, the dyeing damage of the fibers is reduced, the dyeing process of the wool and cashmere is simplified, and the combing and spinning performance of the dyed fiber and the quality of a dyed finished product are favorably improved.

Description

technical field [0001] The invention belongs to the technical field of dyeing and finishing, and in particular relates to a low-temperature dyeing auxiliary for wool or cashmere reactive dyes, a preparation method and application thereof. Background technique [0002] In the dyeing of wool and cashmere, reactive dyes for wool have been widely used in view of their bright color, excellent color fastness and convenient application. Due to the presence of a relatively dense scale layer on the surface of wool and cashmere fibers, it will hinder the adsorption and dyeing of dyes during the dyeing process. Therefore, the dyeing process of wool and cashmere fibers has always been dyed at high temperature. Most of the wool is dyed by boiling at 98°C, and the dyeing temperature of cashmere is generally 95°C. High-temperature dyeing not only consumes a lot of energy and costs, but also causes serious damage to wool and cashmere during long-term processing, such as reduced fiber stren...

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Problems solved by technology

Among them, low-temperature plasma technology has high requirements for equipment and high cost, and it is difficult to apply large-scale to the textile industry with relatively low added value of products; biological enzyme technology mainly uses enzymes to partially hydrolyze wool scales to reduce dye staining Fiber resistance, low temperature dyeing, biological enzymes damage the main structure of wool fiber, poor process controllability; urea method and thiourea method in the actual application process mainly have high urea usage, high cost, and production Low efficiency and other problems; in the actual application process of the formic acid method, there are mainly problems such as high formic acid consumption, large corrosion to equipment, large limitations of dyeing color, and poor dyeing levelness; glyoxal / hydrogen peroxide method in practice The main problem is that reducing agent and oxidizing agent are used at the same time, the production process is difficult to control, and the dyeing level and color fastness are not good; many problems in the above method limit its industrial application in actual production

The low-temperature dyeing auxiliaries method is a relatively systematic and mature technology at present, and has achieved certain results in the low-temperature dyeing research and application of wool mordant dyes and acid dyes, but the application of low-temperature dyeing auxiliaries method in the low-temperature dyeing of wool reactive dyes There are still few studies, mainly due to problems such as poor color fastness and unguaranteed dye exhaustion rate when dyeing dark colors. Although some low-temperature dyeing auxiliaries can increase the dye exhaustion rate by accelerating the dye uptake rate, it is easy to There is a problem of poor dyeing levelness

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