Reagent composition for bleaching of textiles, and textile bleaching method

A composition and textile technology, applied in textiles and papermaking, etc., can solve problems such as poor water solubility and harmful by-products, and achieve the effects of avoiding environmental problems, easy handling, and improving bleaching performance

Active Publication Date: 2019-03-15
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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  • Reagent composition for bleaching of textiles, and textile bleaching method
  • Reagent composition for bleaching of textiles, and textile bleaching method
  • Reagent composition for bleaching of textiles, and textile bleaching method

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 of textiles, and a textile bleaching method. The reagent composition for bleaching of the textiles is prepared from hyperoxide, an activating agent, a penetrating agent, a stabilizer, a pH buffering agent and water, wherein the activating agent contains a first guanidine salt component. The reagent composition and the textile bleaching method are based on constructing a guanidine salt activated hydrogen peroxide system to enable the textiles to efficiently bleached at a low temperature under a near-neutral condition. The technology has the advantages of energy saving, low consumption, textile protection, short process and simple operation. Meanwhile, bleaching objects are in a wide range, and low-temperature bleaching of a cellulose type fabric, a protein type fabric and a chemical fiber type fabric can be achieved; and a novel bleaching way is provided for special fabrics which are poor in 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 Applications(China)
IPC IPC(8): D06L4/12D06L4/13
CPCD06L4/12D06L4/13
Inventor 李青李时伟林锐彬
Owner WUHAN TEXTILE UNIV
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