Stripping agent of indigo dyed pure cotton jean and stripping method thereof

Abstract

The invention discloses a stripping agent of indigo dyed pure cotton jean and a stripping method of the stripping agent, belonging to the technical field of jean stripping, wherein the stripping agent comprises following components by weight: 5-10% of a penetrating agent, 20-25% of a dispersant and the balance of water; the penetrating agent is an anionic surfactant; and the dispersant is any one of polyethylene glycol, polyether nonionic surfactant, polyvinylpyrrolidone, polyvinyl alcohol and polyacrylic acid. The stripping agent and the stripping method disclosed by the invention have good stripping effect and excellent environment protection performance, and are suitable for large-scale promotion in industrial application.

Description

Technical field: [0001] The invention relates to the technical field of denim stripping, in particular to an indigo-dyed pure cotton denim stripping agent and a stripping method. Background technique: [0002] my country's annual consumption of cotton, wool, silk, hemp and other natural fibers is quite huge. According to statistics, my country's textile industry consumes 45 million tons of cotton, hemp, chemical fiber and other textile fiber raw materials every year; at the same time, according to experts' estimates, the total amount of textile scraps and household waste produced in the production process exceeds 22 million tons every year. The comprehensive utilization of waste textiles can not only save land and reduce environmental pollution, but also supplement the raw material supply of my country's textile industry. [0003] With the increasing production and consumption, a large amount of waste textiles has grown "geometrically". The recycling of waste textiles n...

AI Technical Summary

Problems solved by technology

At present, people usually use oxidation method for stripping denim, using strong oxidants such as sodium hypochlorite, potassium permanganate, etc. to oxidize and destroy indigo molecules to decolorize, resulting in high contamination rate of stripping liquid and waste liquid discharge. There is a problem of serious environmental pollution, and at the same time, the performance of cotton fibers is seriously damaged, which has a certain impact on the further use of fibers to develop subsequent products

[0006] Use hydrosulfite and caustic soda alone to reduce and strip indigo. The reduction products on the fiber are not easy to remove. Because the indigo molecular color system is reversible by the reduction of sodium hydrosulfite, the reduction products can be restored to their original form under the action of air oxidation. Indigo natural color results in poor peeling results

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