New dyeing method of active dye taking methylsiloxane as medium

Abstract

The invention discloses a new dyeing method of an active dye taking methylsiloxane as a medium. In the invention, a non-aqueous medium is adopted, which can rapidly close to a fiber surface under the condition of not adding electrolyte for accelerating dye completely, thereby obviously improving adsorption rate and equilibrium adsorption capacity of the active dye, improving fixation rate of the dyeing, completely avoiding the problems of environment and zoology caused by using a large number of inorganic salts, and realizing salt-free dyeing of the active dye in a real meaning. The medium adopted by the invention can be used repeatedly, thereby reducing environmental pollution.

Description

technical field [0001] The invention relates to a method for anhydrous dyeing of textiles with reactive dyes, more specifically, the invention relates to an ecological dyeing method of cellulose fabrics with reactive dyes using methyl siloxane as a medium. Background technique [0002] When dyeing textiles, a large amount of water is consumed, and a large amount of dyeing wastewater is produced, causing some harmful chemical residues to enter the water body, causing serious damage to the ecological environment. For reactive dyes, due to the low dyeing rate in water medium, a large amount of electrolyte is required to promote the dyeing, and because the dye is hydrolyzed in water, the fixation rate is low, and strong soaping is required to remove the floating color, which makes the water more serious. Consumption and pollution of the environment. Today, with the increasing awareness of ecological and environmental protection, the anhydrous and water-less dyeing process with ...

AI Technical Summary

Problems solved by technology

The main problems of this method are: there are few kinds of dyes with sublimation performance, and only disperse dyes are available at present; The practical application of the

Because solvent dyeing is difficult to balance and control the distribution coefficient of dyes on the fiber and in the solvent, the requirements for dyes are relatively high, and the toxicity of the solvent itself reduces the safety of the production process, resulting in new ecological and environmental problems. be further developed

[0006] It can be seen that the anhydrous dyeing methods currently researched or applied to a certain extent are all developed for non-polar dyes, only suitable for disperse dyes, not suitable for hydrophilic dyes such as reactive dyes at all.

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