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Short-process printing and dyeing method of superfine denier polyester fiber

A polyester fiber, short process technology, applied in the field of printing and dyeing, can solve problems such as the inability to meet actual needs

Active Publication Date: 2021-01-26
ZHEJIANG JISHANTE WIDE PRINTING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although people have developed some yellow disperse dye monomers with good alkali resistance, these dye monomers still cannot meet the actual needs when they are applied to the printing and dyeing of ultrafine denier polyester fibers.

Method used

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  • Short-process printing and dyeing method of superfine denier polyester fiber
  • Short-process printing and dyeing method of superfine denier polyester fiber
  • Short-process printing and dyeing method of superfine denier polyester fiber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] At room temperature of 25°C, put 240T pongee superfine polyester fabric into the alkaline dyeing bath; heat up to 105°C, the heating process is fast and then slow, divided into two stages: the first stage, room temperature to 80 °C, the heating rate is 2.5 °C / min; in the second stage, 80 °C to the target temperature, the heating rate is 1 °C / min; and then keep at the target temperature for 50 min. Then the temperature was lowered to 80°C, and washed twice with water, 10 min each time. Then carry out the reduction cleaning step, the conditions are: sodium hydroxide 2.5g / L, hydrosulfite 2.5g / L, temperature 65°C, bath ratio 1:45, and time 20min. Then wash with water again 5 times, each time for 10 minutes; finally dry. Wherein, the formula of described alkaline dyeing bath is as follows:

[0063] Sodium hydroxide 3g / L;

[0064] Benzyl alcohol 15g / L;

[0065] Disperse yellow dye 3o.w.f%;

[0066] Dispersant MF 1g / L;

[0067] Quaternary ammonium salt accelerator 0.08g / ...

Embodiment 2

[0073] At room temperature of 25°C, put 240T pongee superfine polyester fiber fabric into the alkaline dyeing bath; heat up to 106°C, the heating process is first fast and then slow, divided into two stages: the first stage, room temperature to 80 ℃, the heating rate is 2°C / min; in the second stage, from 80°C to the target temperature, the heating rate is 0.5°C / min; then keep at the target temperature for 60 minutes. Then cool down to 80°C and wash with water 4 times, 10 min each time. Then carry out the reduction cleaning step, the conditions are: sodium hydroxide 3g / L, hydrosulfite 3g / L, temperature 65°C, bath ratio 1:45, and time 20min. Then wash again 8 times, 10min each time; finally dry. Wherein, the formula of described alkaline dyeing bath is as follows:

[0074] Sodium hydroxide 4g / L;

[0075] Benzyl alcohol 12g / L;

[0076] Disperse yellow dye 4o.w.f%;

[0077] Dispersant MF 1.2g / L;

[0078] Quaternary ammonium salt accelerator 0.10g / L.

[0079] Wherein, descri...

Embodiment 3

[0084] At room temperature of 25°C, put 240T pongee superfine polyester fiber fabric into the alkaline dyeing bath; heat up to 104°C, the heating process is fast and then slow, divided into two stages: the first stage, room temperature to 80 ℃, the heating rate is 3°C / min; in the second stage, from 80°C to the target temperature, the heating rate is 1°C / min; then keep at the target temperature for 40min. Then the temperature was lowered to 80°C, and washed twice with water, 10 min each time. Then carry out the reduction cleaning step, the conditions are: sodium hydroxide 2g / L, sodium hydroxide 2g / L, temperature 60°C, bath ratio 1:40, and time 20min. Then wash 6 times with water again, 10min each time; finally dry. Wherein, the formula of described alkaline dyeing bath is as follows:

[0085] Sodium hydroxide 2g / L;

[0086] Benzyl alcohol 12g / L;

[0087] Disperse yellow dye 2o.w.f%;

[0088] Dispersant MF 0.5g / L;

[0089] Quaternary ammonium salt accelerator 0.02g / L.

[...

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Abstract

The invention discloses a short-process printing and dyeing method for ultrafine denier polyester fibers, which comprises the following steps: putting ultrafine denier polyester fibers into an alkaline dyeing bath at room temperature; raising the temperature to the target temperature and keeping it warm for a certain period of time; cooling down Washed, reduced cleaning; washed again, and finally dried. In the present invention, through the selection of specific alkali-resistant dyes and quaternary ammonium salt accelerators, combined with the optimization of the ultra-fine denier polyester printing and dyeing process parameters, the dyeing process of ultra-fine denier polyester fiber opening and alkaline dyeing in the same bath is realized. The printing and dyeing process of ultrafine denier polyester fiber is greatly shortened, and the dyeing rate of yellow disperse dyes applied to ultrafine denier polyester fiber is improved; at the same time, its fastness to rubbing and fastness to washing are improved.

Description

technical field [0001] The invention belongs to the technical field of printing and dyeing, in particular to a short-process printing and dyeing method of superfine denier polyester fiber. Background technique [0002] At present, artificial synthetic fibers occupy the mainstream in high-end fabrics, and polyester fibers account for two-thirds of artificial synthetic fibers. The dyes used in polyester fiber printing and dyeing are disperse dyes. Usually, polyester fiber printing and dyeing is carried out under high temperature and high pressure conditions, and most of the dyeing baths are weakly acidic. Since the molecular structure of most disperse dyes contains groups such as hydroxyl, ester, ether, cyano and amide groups, these groups are easily hydrolyzed under high-temperature alkaline conditions, resulting in dyeing performance such as shade and color fastness. Poor, poor reproducibility. In addition, high temperature and high pressure conditions have high requireme...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06P1/18D06P1/673D06P1/651D06P1/66D06P3/54
CPCD06P1/18D06P1/65118D06P1/66D06P1/6735D06P3/54
Inventor 柳士松谢国成胡伟海王国标
Owner ZHEJIANG JISHANTE WIDE PRINTING
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