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A kind of reagent composition and textile bleaching method for textile bleaching

A composition and textile technology, applied in the direction of textiles and papermaking, can solve the problems of harmful by-products and poor water solubility, and achieve the effects of avoiding environmental problems, bleaching a wide range of objects, and improving bleaching performance

Active Publication Date: 2021-06-15
WUHAN TEXTILE UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The earliest developed and commercialized activator is tetraacetylethylenediamine (abbreviated as TAED, CN 101487184A), but its water solubility is poor
Sodium nonanoyloxybenzenesulfonate (NOBS for short, CN 106117092 A) containing sulfonic acid groups has good water solubility, but there are harmful by-products

Method used

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  • A kind of reagent composition and textile bleaching method for textile bleaching
  • A kind of reagent composition and textile bleaching method for textile bleaching
  • A kind of reagent composition and textile bleaching method for textile bleaching

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] (1) 2.75g sucrose ester, 2.75g sodium edetate and 3g sodium bicarbonate were dissolved in 86.2g water to prepare bleaching aid;

[0053] (2) Immerse the polylactic acid filament / viscose filament interwoven fabric (a polylactic acid fabric) in the bleaching aid solution with a bath ratio of 1:50. Under ultrasonic stirring, the temperature was raised to 55°C at a rate of 3.5°C / min, and hydrogen peroxide, the compound with the structure shown in formula (1-1) and the compound with the structure shown in formula (2-1) were added. The mass of hydrogen peroxide, the compound of structure shown in formula (1-1) and the compound of structure shown in formula (2-1) are respectively 3.3g, 1.67g and 0.33g;

[0054] (3) Bleaching was carried out at 55° C. for 45 minutes under ultrasonic stirring, and the polylactic acid filament / viscose filament interwoven fabric was taken out, washed with water and dried to obtain bleached fabric A1.

[0055]

Embodiment 2

[0057] (1) 5g sorbitan ester, 0.5g sodium silicate and 1g potassium dihydrogen phosphate are dissolved in 83.5g water to prepare bleaching aid;

[0058] (2) Soybean protein knitted fabrics are immersed in the bleaching aid solution with a bath ratio of 1:50. Under ultrasonic stirring, the temperature was raised to 60°C at a rate of 2°C / min, and sodium perborate, the compound with the structure shown in formula (1-2) and the compound with the structure shown in formula (2-2) were added, wherein, over The quality of sodium borate, the compound of structure shown in formula (1-2) and the compound of structure shown in formula (2-2) are respectively 6g, 3.64g and 0.36g;

[0059] (3) Bleaching was carried out at 60° C. for 60 minutes under ultrasonic stirring, and the soybean protein knitted fabric was taken out, washed with water and dried to obtain bleached fabric A2.

[0060]

Embodiment 3

[0062] (1) Dissolve 0.5g of polyoxyethylene amine, 5g of sodium pyrophosphate and 5g of sodium acetate in 88.5g of water to prepare a bleaching aid;

[0063] (2) The milk protein / modal knitted fabric (a kind of milk protein fabric) is immersed in the bleaching aid, and the bath ratio is 1:50. Under ultrasonic stirring, the temperature was raised to 50°C at a rate of 5°C / min, and percarbamide, the compound of the structure shown in formula (1-3) and the compound of the structure shown in formula (2-3) were added, wherein, The mass of carbonamide, the compound of structure shown in formula (1-3) and the compound of structure shown in formula (2-3) are respectively 0.6g, 0.307g and 0.093g;

[0064] (3) Bleaching was carried out at 50° C. for 30 minutes under ultrasonic stirring, and the milk protein / modal knitted fabric was taken out, washed with water and dried to obtain bleached fabric A3.

[0065]

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Abstract

The invention relates to the field of textile processing, and discloses a reagent composition for bleaching textiles and a textile bleaching method. The reagent composition for bleaching textiles contains peroxide, activator, penetrant, stabilizer, pH buffer and water, wherein the activator contains the first guanidinium salt component. Based on the construction of a guanidinium salt activated hydrogen peroxide system, the invention realizes low-temperature, near-neutral high-efficiency bleaching of textiles. The process has the advantages of energy saving, low consumption, fabric protection, short process and easy operation. At the same time, it has a wide range of bleaching objects, and can realize low-temperature bleaching of cellulose fabrics, protein fabrics, and chemical fiber fabrics. At the same time, it can also provide a new bleaching method for those special fabrics with poor alkali resistance.

Description

technical field [0001] The invention relates to the field of textile processing, in particular to a reagent composition for bleaching textiles and a textile bleaching method. Background technique [0002] In textile dyeing and finishing, unless it is dyed into dark or dark colors, the colored impurities on the fabric need to be removed during bleaching to give the fabric the ideal whiteness. Commonly used oxidizing bleaches are hydrogen peroxide, sodium hypochlorite, and sodium chlorite. Sodium hypochlorite and sodium chlorite will cause the content of available chlorine in the bleaching wastewater to exceed the standard, causing environmental pollution. In contrast, hydrogen peroxide not only has the advantages of environmental protection, but also has the advantages of high bleaching degree, good stability and wide applicability, so it is widely used. [0003] However, hydrogen peroxide needs to add a large amount of alkaline agent to make the pH value of the bleaching b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06L4/12D06L4/13
CPCD06L4/12D06L4/13
Inventor 李青权衡李时伟倪丽杰林锐彬
Owner WUHAN TEXTILE UNIV
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