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Cotton cloth reduced dye dyeing process

A technology of dyes and cotton cloth, which is applied in the field of dyeing, and can solve the problems of poor level dyeing, poor penetration, poor dye migration, and high initial dyeing rate of leuco bodies, etc.

Inactive Publication Date: 2016-12-14
安徽融创化工科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the initial dyeing rate of leucosomes is high, the migration is poor, the level dyeing and penetrating properties of the dyed matter are poor (color flower and white core), and the pre-reduction operation is complicated
In cotton dyeing, traditional skein dyeing, and some enterprises adopt leuco dyeing, but it is difficult to obtain satisfactory results by using leuco dyeing in package dyeing

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A cotton vat dyeing process, comprising the following steps:

[0022] (a) Dye liquor preparation: add wetting agent and vat dye in deionized water at 15°C, and circulate evenly;

[0023] (b) Suspension cold dyeing: put the cotton cloth into the dyeing solution configured in step (a), and cycle dyeing;

[0024] (c) alkali-adding cycle: caustic soda is added in the dye liquor in step (b), circulates;

[0025] (d) re-adding and adding hydrosulfite circulation;

[0026] (e) Heating and reducing dyeing: adjust the pH value of the dyeing bath to 4.5 with acetic acid, raise the temperature to 100°C at a rate of 1.5°C / min, keep it warm for 40 minutes, and then lower it from 100°C to 60°C at a rate of 1°C / min and keep it warm for 30 minutes;

[0027] (f) Soaping: Add Na2C03 to soap or synthetic detergent, then wash until neutral, and dry at room temperature;

[0028] The wetting agent in step (a) is one of polyoxyethylene alkylphenol ether, polyoxyethylene fatty alcohol ether...

Embodiment 2

[0030] A cotton vat dyeing process, comprising the following steps:

[0031] (a) Dye liquor preparation: add wetting agent and vat dye in deionized water at 20°C, and circulate evenly;

[0032] (b) Suspension cold dyeing: put the cotton cloth into the dyeing solution configured in step (a), and cycle dyeing;

[0033] (c) alkali-adding cycle: caustic soda is added in the dye liquor in step (b), circulates;

[0034] (d) re-adding and adding hydrosulfite circulation;

[0035] (e) Heating and reducing dyeing: adjust the pH value of the dyeing bath to 4.5 with acetic acid, raise the temperature to 100°C at a rate of 1.5°C / min, keep it warm for 60 minutes, and then lower it from 100°C to 60°C at a rate of 1°C / min and keep it warm for 30 minutes;

[0036] (f) Soaping: Add Na2C03 to soap or synthetic detergent, then wash until neutral, and dry at room temperature;

[0037] The wetting agent in step (a) is one of polyoxyethylene alkylphenol ether, polyoxyethylene fatty alcohol ether...

Embodiment 3

[0039] A cotton vat dyeing process, comprising the following steps:

[0040] (a) Dye liquor preparation: add wetting agent and vat dye in deionized water at 20°C, and circulate evenly;

[0041] (b) Suspension cold dyeing: put the cotton cloth into the dyeing solution configured in step (a), and cycle dyeing;

[0042] (c) alkali-adding cycle: caustic soda is added in the dye liquor in step (b), circulates;

[0043] (d) re-adding and adding hydrosulfite circulation;

[0044] (e) Heating and reducing dyeing: adjust the pH value of the dyeing bath to 4 with acetic acid, raise the temperature to 100°C at a speed of 1.5°C / min, keep it warm for 40 minutes, and then lower it from 100°C to 60°C at a speed of 1°C / min and keep it warm for 30 minutes;

[0045] (f) Soaping: Add Na2C03 to soap or synthetic detergent, then wash until neutral, and dry at room temperature;

[0046] The wetting agent in step (a) is one of polyoxyethylene alkylphenol ether, polyoxyethylene fatty alcohol ether...

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PUM

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Abstract

The invention discloses a cotton cloth reduced dye dyeing process. The cotton cloth reduced dye dyeing process includes the following steps of a, dye liquor preparation, wherein a wetting agent and reduced dye are added into deionized water in the environment of the 15 DEG C to 20 DEG C temperature, and the mixture circulates evenly; b, suspensoid cold dyeing, wherein cotton cloth is placed in dye liquor prepared in the step a, and cyclic dyeing is carried out; c, alkalifying circulation, wherein caustic soda is added into the dye liquor obtained in the step b, and circulation is carried out; d, adding of sodium hydrosulfite for circulation; e, heating reduction dye up-take, wherein the pH value of a dye bath is adjusted to range from 4 to 4.5 with acetic acid, the temperature is raised to 100 DEG C at the speed of 1.5 DEG C / min, heat preservation dyeing is carried out for 40-60 min, then the temperature is reduced to 60 DEG C from 100 DEG C at the speed of 1 DEG C / min, and heat preservation is carried out for 30 min; f, soaping, wherein a soap or a synthetic detergent is added into Na2CO3, washing is carried out till the material is neutral, and airing is carried out at room temperature. The cotton cloth reduced dye dyeing process has the advantages of being high in dyeing rate and good in migration property.

Description

technical field [0001] The invention relates to the field of dyeing, in particular to a vat dye dyeing process for cotton cloth. Background technique [0002] Whether it is fabric or cotton, dyeing with vat dyes, no matter which method is used, the dyeing process will go through the dye is reduced to leuco, the leuco is dyed on the fiber, the leuco is oxidized into dye, the hair color is soaped and the floating is washed away Color four steps. However, the initial dyeing rate of leucosomes is high, the dye migration is poor, the level dyeing and penetration of the dyed matter are poor (color flower and white core), and the pre-reduction operation is complicated. In cotton dyeing, traditional skein dyeing, and some enterprises adopt leuco dyeing, but it is difficult to obtain satisfactory results by leuco dyeing in package dyeing. Contents of the invention [0003] Aiming at the deficiencies of the prior art, the invention provides a cotton vat dyeing process, which has t...

Claims

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Application Information

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IPC IPC(8): D06P1/22D06P1/613D06P1/673D06P3/60
CPCD06P1/224D06P1/613D06P1/6133D06P1/6135D06P1/6735D06P1/67375D06P3/6025
Inventor 王洪卫徐卉香李振蒋大为高鸿宇郭元
Owner 安徽融创化工科技股份有限公司
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