Disperse reactive dye one-bath dyeing method

A technology of one-bath dyeing and dispersing activity, which is applied in the field of textile dyeing, can solve problems affecting color brightness, precipitation, and alkali resistance, and achieve the effects of improving and protecting the environment, simplifying the dyeing process, and reducing the quantity

Inactive Publication Date: 2015-11-25
黄新明
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  • Abstract
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AI Technical Summary

Problems solved by technology

However, polyester fibers and disperse dyes are not resistant to alkali, which will cause color change and light color under high temperature and alkaline conditions. Therefore, the varieties of disperse dyes suitable for the one-bath and one-step method are limited.
Second, baking at high temperature under alkaline conditions will cause the cotton fiber to turn yellow, thus affecting the vividness of the color
Third, the stability of dispersants for many disperse dyes decreases under alkaline conditions, thus causing aggregation and precipitation of disperse dyes

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] The configuration of the dyeing solution was carried out according to the following conditions: the total dyestuff mass was 2.8% of the dyed fabric mass, and the reactive yellow, reactive red and reactive blue varieties with molecular weights of 840, 953 and 1216 were selected for use as reactive dyes of three primary colors. The three primary color disperse dyes are disperse blue, disperse red and disperse yellow varieties with molecular weights of 310, 433 and 575 respectively. The dosage of each single variety of dyestuff needs to be appropriately added or subtracted according to the color of the dyed product.

[0023] The dyeing bath ratio is 30:1, add anhydrous sodium sulfate 30g / l, and use anhydrous sodium carbonate 20g / l to adjust the pH value of the dyeing solution to 9. Prepare the dyeing solution at 30°C with the dyeing material calculated according to the weight of the dyed sample And put it into the dyeing equipment, start it up for 2-3 minutes, put it into ...

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Abstract

The invention discloses a disperse reactive dye one-bath dyeing method, and belongs to the field of textile printing and dyeing. The method is characterized in that a screened trichromatic reactive dye having high-temperature resistance and low hydrolysis rate under an alkaline condition and a screened trichromatic disperse dye which can moderately tolerate a dyeing solution with a certain alkalinity and does not turn colors are used for dyeing, and under technological conditions that the temperature is 120 DEG C or less, the dyeing bath ratio is (8-30):1, the pH value is adjusted to 9 or less with HAC-NaAC or sodium carbonate and the dyeing solution needs to be added with 15-45 g/L NaCl or anhydrous Na2SO4, the combined dye can implement one-bath one-step method dyeing of polyester-cotton fabrics.

Description

Technical field: [0001] The invention relates to a one-bath dyeing method of disperse reactive dyes, which belongs to the field of textile dyeing. Background technique: [0002] Polyester-cotton blended textiles are currently the most widely used type of textiles. Since blended textiles contain polyester fibers and cotton fibers, and the properties and structures of the two fibers are completely different, two completely different dyes need to be selected for dyeing. dyeing. At present, the dyeing of these two fibers mainly uses two kinds of disperse and reactive dyes, which are used to dye polyester and cellulose fibers respectively. [0003] Disperse dyes are mainly used for dyeing polyester fibers. Disperse dyes are insoluble in water, and the dyes are mainly dispersed and suspended in the dyeing solution as fine particles in water. In order to ensure the stability of disperse dyes, a large amount of anionic dispersants are added to commercial dyes. Therefore, it is no...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06P1/18D06P1/20D06P1/382
Inventor 黄新明
Owner 黄新明
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