High-fixation-rate non-aqueous solvent dyeing method for reactive dyes

A reactive dye and non-aqueous solvent technology, applied in the field of textile dyeing and finishing, can solve the problems of high affinity of dyes to fibers, high affinity, and large amount of surfactant co-surfactant.
CN104594074AActive Publication Date: 2015-05-06GUANGDONG ESQUEL TEXTILES CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
GUANGDONG ESQUEL TEXTILES CO LTD
Publication Date
2015-05-06

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Abstract

The invention provides an active dye non-aqueous solvent dyeing method with high color fixation rate. The method comprises the following steps: swelling a cotton fabric in an aqueous solution of an alkaline substance until the moisture content is 30 to 200 percent, and then drying the cotton fabric; mixing the dried cotton fabric with active dye and good solvent of the active dye, adding poor solvent of the active dye in the heating process, and preserving the heat until the temperature reaches a dyeing temperature; placing the dyed cotton fabric in an organic solution with more than two nucleophilic group compounds, and preserving the temperature for a period of time; then placing the cotton fabric in an organic solution with more than two electrophilic group compounds to be reacted; taking out the cotton fabric, neutralizing and washing the cotton fabric, and completing the dyeing. By adopting the active dye non-aqueous solvent dyeing method, little water is used, and the utilization rate of the dye is high.
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Description

technical field

[0001] The invention relates to a dyeing method of reactive dyes, in particular to a non-aqueous solvent dyeing method of reactive dyes with high color fixation rate, and belongs to the technical field of textile dyeing and finishing. Background technique

[0002] At present, reactive dyes are mostly used in the dyeing of reactive fibers. During the dyeing process, due to the hydrolysis of the active groups in the water medium, not only a large amount of reactive dyes are wasted, but also a large amount of water is consumed during the dyeing process and a large amount of high Chroma sewage, which is an insurmountable bottleneck for reactive dyes.

[0003] In order to avoid the hydrolysis reaction of reactive dyes and improve the utilization rate of reactive dyes, scientists have paid attention to and studied the dyeing of reactive dyes in non-aqueous media very early. The advantage of using non-aqueous medium dyeing is that reactive dyes will not be hydrolyz...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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