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A kind of bleaching working solution and its application

A technology of working liquid and ligand, which is applied in the field of bleaching, and can solve the problems of poor wettability of fabrics, high temperature, and strong alkali treatment time, etc.

Active Publication Date: 2020-10-30
ZHEJIANG SCI-TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the hydrogen peroxide bleaching process was popularized in the middle of last century, it has been widely used in the dyeing and finishing industry because of its good whiteness and whiteness stability after treatment, the final decomposition products are water and oxygen, and little environmental pollution. There are still some disadvantages in the conventional oxygen bleaching process: high temperature, strong alkali and long processing time, etc.
However, compared with the oxygen bleaching process, its effect is not ideal, and there are disadvantages such as poor fabric wettability and low whiteness

Method used

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  • A kind of bleaching working solution and its application
  • A kind of bleaching working solution and its application
  • A kind of bleaching working solution and its application

Examples

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preparation example Construction

[0107] In the present invention, the preparation method of the metal complex preferably comprises the following steps:

[0108] Mix iminodiacetic acid derivatives, nitrogen-containing heterocyclic ligands, soluble metal salts and solvents, and undergo a coordination reaction in a protective atmosphere to obtain metal complexes.

[0109] In the present invention, the solvent is preferably one or more of water, methanol, ethanol, acetonitrile, acetone, N,N-dimethylformamide, tetrahydrofuran, chloroform, methylene chloride, benzene and ethyl acetate ; When the solvent is two or more of the above specific selections, the present invention does not have any special limitation on the mass ratio of the specific substances.

[0110] In the present invention, the iminodiacetic acid derivative preferably has the structure shown in formula a':

[0111]

[0112] Among them, R in formula a' is hydrogen, C1-C18 alkyl, amino, C1-C10 alkylamino, C1-C10 alkoxy, amido, acyloxy, aryl, cyano,...

Embodiment 1

[0156] 1. Preparation of metal complexes

[0157] Dissolve 0.8mmol of N-methyliminodiacetic acid and 1.6mmol of ferric nitrate in 40mL of a mixed solvent of water and methanol (the volume ratio of water and methanol is 1:1), control the temperature at 20°C, and 2 Stir for 10 minutes under the same conditions, then add 1.6 mmol of 4-carboxypyridine, continue to stir for coordination reaction until the color of the solution does not change, filter to obtain a metal complex solution, and crystallize at room temperature to obtain a metal complex;

[0158] 2. Preparation of bleach working solution

[0159] 15 parts by weight of hydrogen peroxide, 0.01 parts by weight of metal complexes, 2 parts by weight of penetrant JFC, 1 part by weight of desizing enzyme F-252, 2 parts by weight of Goon high-capacity scouring enzyme, 0.5 parts by weight of oxygen bleaching stabilizer Goon2010, 1000 parts of water parts by weight.

[0160] 3. Bleaching process

[0161] According to the mass ra...

Embodiment 2

[0163] 1. Preparation of metal complexes

[0164] Dissolve 0.8mmol N-(2-pyridylmethyl)iminodiacetic acid and 0.8mmol cobalt chloride in 40mL water, control the temperature at 40°C, and N 2 Stir for 10 min under the conditions, then add 0.8 mmol of 2,2'-bipyridine, continue to stir for coordination reaction until the color of the solution no longer changes, filter to obtain a metal complex solution, and crystallize at room temperature to obtain a metal complex;

[0165] 2. Preparation of bleach working solution

[0166] 15 parts by weight of hydrogen peroxide, 0.01 parts by weight of metal complexes, 2 parts by weight of fast penetrating agent T, 1.5 parts by weight of Suhong wide temperature desizing enzyme, 2 parts by weight of Goon1013 cold stack scouring enzyme, 0.5 parts by weight of Goon2010 oxygen bleaching stabilizer, water 1000 parts by weight.

[0167] 3. Bleaching process

[0168] According to the mass ratio of textiles and bleaching working solution 1:20, put the...

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Abstract

The invention provides a bleaching working fluid. The bleaching working fluid is prepared from the following components in parts by weight: 3 to 40 parts of hydrogen peroxide, 0.002 to 0.05 part of metal complex, 0.5 to 5 parts of penetrant, 0.1 to 5 parts of desizing enzyme, 0.1 to 10 parts of scouring enzyme, 0.1 to 5 parts of hydrogen peroxide stabilizer, and 1000 parts of water. The bleachingworking fluid has the advantages that the bleaching working fluid is matched with the metal complex and the biological enzyme, so that the bleaching temperature is reduced from 100 DEG C to 70 DEG C or below at the premises of higher whiteness and smaller strong loss rate; the bleaching working fluid has significant meaning on the ecological environment-friendly, energy-saving and consumption-decreasing aspects of printing and dyeing industry.

Description

technical field [0001] The invention relates to the technical field of bleaching, in particular to a bleaching working solution and its application. Background technique [0002] In the bleaching process of fabrics, strong oxidizing substances such as sodium hypochlorite, sodium chlorite, hydrogen peroxide, etc. are commonly used bleaching agents, but now sodium hypochlorite and sodium chlorite are rarely used in production. Since the hydrogen peroxide bleaching process was popularized in the middle of last century, it has been widely used in the dyeing and finishing industry because of its good whiteness and whiteness stability after treatment, the final decomposition products are water and oxygen, and little environmental pollution. There are still some disadvantages in the conventional oxygen bleaching process: high temperature, strong alkali and long treatment time. [0003] In recent years, due to the characteristics of mildness, specificity and high efficiency, biolog...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06L4/13D06L4/12D06L4/40
CPCD06L4/12D06L4/13D06L4/40
Inventor 吕汪洋吴臣仁陈文兴
Owner ZHEJIANG SCI-TECH UNIV
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