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Sodium percarbonate cashmere bleaching solution and bleaching method thereof

A sodium percarbonate and bleaching solution technology, applied in textiles and papermaking, can solve the problems of cashmere fiber strength loss, improper control of bleaching process parameters, affecting spinning yield and finished product handle, etc., and achieve good water solubility

Inactive Publication Date: 2017-04-05
江苏阳光毛纺服装技术开发有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For bleached or bright light-colored cashmere products, at present, enterprises mainly use hydrogen peroxide to pre-bleach cashmere, and improper control of bleaching process parameters will directly cause serious loss of cashmere fiber strength, and affect the subsequent spinning rate and finished product feel.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] For realizing above-mentioned technical effect, sodium percarbonate cashmere bleaching liquid component comprises sodium percarbonate 0.3%, bleaching activator 0.05%, composite oxygen bleaching stabilizer, pH value regulator and water by weight percentage in embodiment 1, percarbonate Sodium cashmere bleach has a pH of 8.5.

[0018] Wherein, the pH regulator is sodium hydroxide.

[0019] Among them, the composition of the composite oxygen bleaching stabilizer is: 8 parts of tartaric acid, 2 parts of polymalic acid, 10 parts of talcum powder, 20 parts of ethanol, 3 parts of hydroxyethylene diphosphoric acid, and 60 parts of water.

[0020] Wherein, the bleach activator is nonanoyloxybenzenesulfonate.

[0021] The bleaching method of sodium percarbonate cashmere bleaching solution may further comprise the steps:

[0022] S1: Put the cashmere fiber into the sodium percarbonate cashmere bleaching solution to fully soak at room temperature, gradually raise the temperature ...

Embodiment 2

[0027] In embodiment 2, sodium percarbonate cashmere bleach component comprises sodium percarbonate 0.7%, bleach activator 0.15%, composite oxygen bleach stabilizer, pH regulator and water by weight percentage, the pH of sodium percarbonate cashmere bleach The value is 9.

[0028] Wherein, the pH regulator is glycine-sodium hydroxide pH buffer pair.

[0029] Among them, the composition of the composite oxygen bleaching stabilizer is: 9 parts of tartaric acid, 3.5 parts of polymalic acid, 15 parts of talcum powder, 30 parts of ethanol, 4.5 parts of hydroxyethylene diphosphoric acid, and 50 parts of water.

[0030] Wherein, the bleach activator is formed by mixing tetraacetylethylenediamine and hexamethylenetetramine at a ratio of 1:1.

[0031] The bleaching method of sodium percarbonate cashmere bleaching solution may further comprise the steps:

[0032] S1: Put the cashmere fiber into the sodium percarbonate cashmere bleaching solution to fully soak at room temperature, grad...

Embodiment 3

[0037] In embodiment 3, sodium percarbonate cashmere bleaching solution component comprises sodium percarbonate 1.2%, bleach activator 0.25%, composite oxygen bleach stabilizer, pH regulator and water by weight percentage, the pH of sodium percarbonate cashmere bleaching solution The value is 9.5.

[0038] Wherein, the pH regulator is a sodium carbonate-sodium bicarbonate pH buffer pair.

[0039] Among them, the composition of the composite oxygen bleaching stabilizer is: 10 parts of tartaric acid, 2 parts of polymalic acid, 20 parts of talcum powder, 40 parts of ethanol, 6 parts of hydroxyethylene diphosphoric acid, and 40 parts of water.

[0040] Wherein, the bleach activator is at least one selected from tetraacetylethylenediamine, nonanoyloxybenzenesulfonate, diethyl tartrate, amine acetate, and hexamethylenetetramine.

[0041] The bleaching method of sodium percarbonate cashmere bleaching solution may further comprise the steps:

[0042] S1: Put the cashmere fiber into ...

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PUM

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Abstract

The invention discloses a sodium percarbonate cashmere bleaching solution, which comprises the following components by weight percentage: 0.3-1.2% of sodium percarbonate, 0.05-0.25% of a bleaching activator, a composite oxygen bleaching stabilizer, a pH regulator and water. The sodium percarbonate cashmere bleaching solution has a pH value of 8.5-9.5. According to the invention, sodium percarbonate is adopted as the oxidizing agent, and sodium percarbonate has the advantages of no toxicity, no odor and no pollution, etc., and also has the characteristics of bleaching, sterilization and good water solubility, etc. In the use process, sodium percarbonate can be effectively decomposed to generate hydrogen peroxide through the effect of the activator, and belongs to mild oxidation oxidizing agent. Compared with the traditional hydrogen peroxide process bleaching, the bleaching solution provided by the invention employs sodium percarbonate for bleaching, the whiteness of cashmere is slightly low, however the whiteness value can reach more than 80, and single fiber strength is slightly higher. The invention also discloses a bleaching method of the sodium percarbonate cashmere bleaching solution.

Description

technical field [0001] The invention relates to the technical field of fiber bleaching compositions, in particular to a sodium percarbonate cashmere bleaching solution and a bleaching method thereof. Background technique [0002] Cashmere is known as "fiber diamond" and "soft gold". It is a rare and special animal fiber. Its products have the characteristics of soft, smooth, elegant style, noble, good warmth retention and strong hygroscopicity. It is the perfect high-end clothing for people. ideal product. Cashmere fiber is more sensitive than fine wool to acid, alkali, heat, oxidizing and reducing agents, etc. Even if it is treated under milder conditions, the fiber damage is very obvious. For bleached or bright light-colored cashmere products, at present, enterprises mainly use hydrogen peroxide to pre-bleach cashmere, and improper control of bleaching process parameters will directly cause serious loss of cashmere fiber strength, and affect the subsequent spinning rate a...

Claims

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Application Information

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IPC IPC(8): D06L4/12D06L4/13
Inventor 刘刚许宏
Owner 江苏阳光毛纺服装技术开发有限公司