One-bath dyeing method for brocade cotton through reactive dyes

A technology of reactive dyes and dyeing methods, applied in dyeing methods, textiles and papermaking, etc., can solve the problems of long dyeing process time, high power consumption, high steam consumption, poor washing fastness, etc., to save dyeing time and improve efficiency. , the effect of good dyeing rate

Active Publication Date: 2015-12-30
浙江劲光纺织科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The dyeing effect of this dyeing process takes a long time, consumes a lot of water, consumes a lot of electricity and steam, and because the acid dye and nylon are not combined in a covalent bond, the washing fastness is poor

Method used

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  • One-bath dyeing method for brocade cotton through reactive dyes
  • One-bath dyeing method for brocade cotton through reactive dyes

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0070] Step (1): Add 250 kg of brocade cotton cloth to the dye vat, and add dye liquor into the dye vat, the bath ratio is 1:4; the steps of adding the dye liquor are: first weigh the required amount of sodium sulfate, pH sliding agent P35 (Shangyu Lide Auxiliary Co., Ltd.) and reactive dyes (CNS black, Jinguang Industrial Co., Ltd.); then fully dissolve them in water at 40-50°C, and the sum of the water used for each component is less than the total of the liquor ratio. water volume. After the components of each dye solution are fully dissolved, pour them into the dyeing vat, and then add hot water to the dyeing vat to the volume required by the bath ratio. In the dye liquor, the concentration of sodium sulfate is 100g / L, the concentration of P35 is 2% (based on the weight of the dye liquor), and the concentration of reactive dye black is 7owf%. After the feeding is completed, keep warm for 20 minutes.

[0071] Step (2): Gradient heating: the temperature rise gradient is 1°...

Embodiment 2

[0074] Step (1): Add 250kg of brocade cotton cloth to the dyeing vat, and add dye liquor into the dye vat, the bath ratio is 1:6; the steps of adding the dye liquor are: first weigh the required amount of sodium sulfate and pH sliding agent P35 (Shangyu Lide Auxiliary Co., Ltd.) and reactive dyes (CNS black, Jinguang Industrial Co., Ltd.); then fully dissolve them in water at 40-50°C, and the sum of the water used for each component is less than the total of the liquor ratio. water volume. After the components of each dye solution are fully dissolved, pour them into the dyeing vat, and then add hot water to the dyeing vat to the volume required by the bath ratio. In the dye liquor, the concentration of sodium sulfate is 100g / L, the concentration of P35 is 1% (based on the weight of the dye liquor), and the concentration of reactive dye black is 8owf%. After the feeding is completed, keep warm for 20 minutes.

[0075] Step (2): Gradient temperature rise: The temperature rise ...

Embodiment 3

[0078] Step (1): Add 250kg of brocade cotton cloth to the dyeing vat, and add dye liquor into the dye vat, the bath ratio is 1:6; the steps of adding the dye liquor are: first weigh the required amount of sodium sulfate and pH sliding agent P35 (Shangyu Lide Auxiliary Co., Ltd.) and reactive dyes (CNS black, Jinguang Industrial Co., Ltd.); then fully dissolve them in water at 40-50°C, and the sum of the water used for each component is less than the total of the liquor ratio. water volume. After the components of each dye solution are fully dissolved, pour them into the dyeing vat, and then add hot water to the dyeing vat to the volume required by the bath ratio. In the dye liquor, the concentration of sodium sulfate is 100g / L, the concentration of P35 is 2% (based on the weight of the dye liquor), and the concentration of reactive dye black is 7owf%. After the feeding is completed, keep warm for 20 minutes.

[0079] Step (2): Gradient heating: the temperature gradient is 1°...

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Abstract

The invention discloses a one-bath dyeing method for brocade cotton through reactive dyes. The method comprises steps as follows: step (1), brocade cotton cloth is pretreated, dye liquor is added, and the bath ratio of the brocade cotton cloth to the dye liquor is 1: (4-6); step (2), the dye liquor is gradiently heated to 95-100 DEG C, the cloth is kept at the temperature to be dyed for 30-40 min, the dye liquor is cooled to 80-85 DEG C, a dyeing accelerant solution is added, and color fixation is performed for 40-50 min; step (3), the dyed brocade cotton is obtained through aftertreatment after dyeing in the step (2) is completed. One-bath dyeing of the brocade cotton is realized through coordination of the temperature, an acid-releasing agent, anhydrous sodium sulphate and the reactive dyes, a process is simple, energy is saved, and the prepared dyed brocade cotton has high washing fastness and small chromatic aberration.

Description

technical field [0001] The invention relates to a dyeing method in the printing and dyeing industry, in particular to a one-bath dyeing method for nylon cotton reactive dyes Background technique [0002] Nylon cotton Roman cloth (nylon cotton cloth) dyeing mainly uses reactive dyes to dye cotton and acid dyes to dye nylon, which is widely welcomed and the amount of use is expanding year by year. Reactive dyes are combined with dyed fibers by covalent bonds, and have the characteristics of bright shade, complete chromatogram, simple dyeing process, and excellent color fastness. However, most of the two dyes are dyed by two-bath method, which takes a long time and consumes a lot of energy. , and the washing fastness is poor. Reactive dyes are mainly fixed on cellulose fibers under alkaline conditions, and mainly on nylon fibers under acidic conditions. Using its characteristics in process design, the purpose of reactive dyes on two kinds of fibers is finally achieved. [000...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06P1/38D06P1/673D06P1/44D06P3/85D06P5/02
Inventor 王国林王予清
Owner 浙江劲光纺织科技有限公司
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