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Waterless reductive dyeing process

A process and dye technology, applied in the field of anhydrous reductive dyeing process, can solve the problems of environmental air pollution, printing and dyeing process unfavorable to national environmental protection, high pollutant concentration, etc., and achieve high coloring rate, excellent economic benefits, and fewer cycles Effect

Pending Publication Date: 2021-12-07
江阴华祥机电科技有限公司
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Problems solved by technology

Therefore, the dyeing achieved by the above process will lead to a large amount of sewage, and due to the contact with air and oxidation in the air, the open treatment environment will cause certain pollution to the ambient air, and there will be a large amount of sewage after dyeing. radiation
[0003] In the actual production process, the sewage volume of a traditional textile equipment is basically about 120 tons, and the pollution of wastewater is mainly organic pollution and the concentration of pollutants is high. The pollutants in wastewater are mainly the second type of harmful substances. It is difficult for wastewater treatment facilities to meet higher discharge standards
Therefore, the printing and dyeing process that produces a large amount of wastewater is not conducive to the realization of national environmental protection requirements, and for enterprises, the treatment of wastewater will also lead to a decline in economic benefits

Method used

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  • Waterless reductive dyeing process

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Embodiment 1

[0023] refer to figure 1 , taking cotton yarn as an example, it needs to be dyed with vat dyes such as indigo in order to make cotton yarn denim. The specific steps are as follows:

[0024] Step 1. Carry out cationic graft modification treatment on the dyed fabric, that is, cotton yarn, specifically soaking the cotton yarn in a polymer cationic modifier for 30 minutes; the cationic modifier adopts a cationic quaternary ammonium salt polymer, which is Compounds with reactive functional groups are mainly used in the new dyeing process of cellulose fibers for garment coatings and dyeing in the same bath with direct and reactive dyes. Therefore, the use of cationic grafting modification in this scheme is mainly to increase the color uptake rate of dyeing.

[0025] Step 2, raising the modified dyed fabric to 80 degrees Celsius for drying treatment, drying for 10 minutes, cooling to room temperature after drying, and then completing the pretreatment of material preparation. The se...

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Abstract

The invention discloses a waterless reductive dyeing process. The process comprises the following steps of grafting a dyed fabric through a special interface agent, performing drying, ventilating and cooling, entering a spray dyeing box body, and then entering an ozone box to carry out a strong oxidation reaction, so that dye forms color development. The invention relates to the technical field of cloth dyeing. Compared with the prior art, the process has the advantages of low pollution, low energy consumption and excellent economic benefit.

Description

technical field [0001] The invention relates to the technical field of cloth dyeing, in particular to an anhydrous reduction dyeing process. Background technique [0002] The comprehensive vat dye dyeing process currently processed in the market is the traditional dyeing reduction to leuco, or suspension (suspension dyeing is to attach the consumed dye particles to the dyed fabric first, and then pad the reducing solution. The dyeing process consumes a lot of energy and the dyeing is unstable) through the reduction steamer to fully reduce the leuco body to the dyeing process) to carry out an affinity reaction on the fiber, and after oxidation, the required color is generated, and then after a large number of washing processes, the floating color on the surface of the fabric is removed. So as to achieve color fastness. Therefore, the dyeing achieved by the above process will lead to a large amount of sewage, and due to the contact with air and oxidation in the air, the open ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06P5/22D06P1/22D06P3/60
CPCD06P5/225D06P1/22D06P1/228D06P3/6025
Inventor 叶家龙严华严诚
Owner 江阴华祥机电科技有限公司
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