Oxygen bleaching stabilizer for cellulosic fiber fabric cold-pad-batch oxygen bleaching process

A technology of cellulose fiber and oxygen bleaching stabilizer, applied in the direction of textiles and papermaking, can solve the problems of high COD and silicon spots, etc., achieve strong pigmentation, avoid local holes, and achieve good bleaching effect

Inactive Publication Date: 2019-11-15
ZHEJIANG HAPPY CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing oxygen bleaching stabilizers are phosphorus-containing substances or magnesium sulfate substances, silicon-containing substances such as water glass, etc., accounting for 60-80% of the market, which do not meet the current environmental protection requirements, and the COD of the product is high. Sewage treatment in printing and dyeing plants brings high pressure. In addition, other types of phosphorus-free oxygen bleaching stabilizers have high COD and are prone to silicon spots

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] An oxygen bleaching stabilizer for the cold pad batch oxygen bleaching process of cellulose fiber fabrics, comprising the following components in parts by weight:

[0022] Sodium hexametaphosphate 6 parts

[0023] 8 parts polymalic acid

[0024] 4 parts polyacrylamide

[0025] 10 parts boric acid

[0026] Chelating agent 30 parts

[0027] Surfactant 8 parts

[0028] 50 parts of water.

[0029] Described chelating agent comprises following each weight component:

[0030] Carbohydrate polymer 300 parts

[0031] Sodium hydroxide 40 parts

[0032] 100 parts hydrogen peroxide

[0033] The carbohydrate polymer is an oligosaccharide disaccharide.

[0034] The surfactant is polyoxyethylene fatty acid ester.

Embodiment 2

[0036] An oxygen bleaching stabilizer for the cold pad batch oxygen bleaching process of cellulose fiber fabrics, comprising the following components in parts by weight:

[0037] Sodium hexametaphosphate 10 parts

[0038] 3 parts polymalic acid

[0039] 6 parts polyacrylamide

[0040] 5 parts boric acid

[0041] Chelating agent 45 parts

[0042] Surfactant 5 parts

[0043] 70 parts of water.

[0044] Described chelating agent comprises following each weight component:

[0045] Carbohydrate polymer 500 parts

[0046] Sodium hydroxide 20 parts

[0047] 300 parts of hydrogen peroxide

[0048] The carbohydrate polymer is glucose.

[0049] It is further preferred that the surfactant is fatty acid polyoxyethylene ester.

Embodiment 3

[0051] An oxygen bleaching stabilizer for the cold pad batch oxygen bleaching process of cellulose fiber fabrics, comprising the following components in parts by weight:

[0052] Sodium hexametaphosphate 8 parts

[0053] 6 parts polymalic acid

[0054] 5 parts polyacrylamide

[0055] 8 parts boric acid

[0056] Chelating agent 35 parts

[0057] Surfactant 6 parts

[0058] 60 parts of water.

[0059] Described chelating agent comprises following each weight component:

[0060] Carbohydrate polymer 400 parts

[0061] Sodium hydroxide 30 parts

[0062] 200 parts hydrogen peroxide

[0063] The carbohydrate polymer is glucose.

[0064] The surfactant is polyoxyethylene fatty acid ester.

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PUM

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Abstract

The invention belongs to the technical field of textile printing and dyeing auxiliaries, and particularly relates to an oxygen bleaching stabilizer. The oxygen bleaching stabilizer for a cellulosic fiber fabric cold-pad-batch oxygen bleaching process is prepared from, by weight, 6-10 parts of sodium hexametaphosphate, 3-8 parts of polymalic acid, 4-6 parts of polyacrylamide, 5-10 parts of boric acid, 30-45 parts of a chelating agent, 5-8 parts of a surfactant and 50-70 parts of water. The oxygen bleaching stabilizer not only has a good bleaching effect, but also can effectively prevent siliconscale from being deposited and adhering to the surface of a fabric; the product has no phosphorus, can be biodegraded, is widely applicable to the printing and dyeing industry, and is suitable for the cold-pad-batch oxygen bleaching process of cellulosic fibers and blended fabrics thereof.

Description

technical field [0001] The invention belongs to the technical field of textile printing and dyeing auxiliaries, in particular to an oxygen bleaching stabilizer. Background technique [0002] Hydrogen peroxide is an excellent oxidative bleaching agent. It has the advantages of pure bleaching products, good whiteness stability, no pollution, and no corrosion of equipment. Therefore, it is widely used in the bleaching of cellulose fibers and other fibers. Therefore, in order to make the hydrogen peroxide decompose evenly and effectively during the bleaching process and avoid severe damage to the fabric, a certain amount of oxygen bleaching stabilizer is usually added to the bleaching solution. Existing oxygen bleaching stabilizers are phosphorus-containing substances or magnesium sulfate substances, silicon-containing substances such as water glass, etc., accounting for 60-80% of the market, which do not meet the current environmental protection requirements, and the COD of the...

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 陶海峰
Owner ZHEJIANG HAPPY CHEM
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