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Preparation method and application of low-temperature oxygen bleaching composite activator

A technology of oxygen bleaching and low temperature, which is applied in the direction of bleaching products, textiles and papermaking, etc. It can solve the problems of product stability, destruction of natural pigments, fabric strength damage, etc., and achieves low investment, high activation efficiency and enhanced contact reaction. Effect

Inactive Publication Date: 2015-06-24
SUZHOU CHENHENG WEAVING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] A long time ago, the hydrogen peroxide bleaching process has undergone great changes, from intermittent to continuous, from high temperature to low temperature, from a single bleaching process to boiling or bleaching in one bath, but currently the two most widely used hydrogen peroxide Bleaching technology also has some shortcomings: (1) The hydrogen peroxide steam process needs to be treated at high temperature for up to 1 hour to complete the bleaching effect, which not only consumes a lot of energy, but also seriously damages the fabric.
(2) For the hydrogen peroxide cold rolling process, the fluctuation of padding amount, stacking time, stacking temperature and washing conditions will affect the bleaching effect, so the stability of its products needs to be improved
However, in the bleaching process, in addition to destroying the natural pigment, the cotton fiber itself will also be damaged.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] This embodiment provides a method for preparing a low-temperature oxygen bleaching composite active agent. The specific steps of the preparation method for the composite active agent are as follows:

[0053] (1) Preparation of N-[4-(triethylaminomethyl)benzoyl]caprolactam chloride

[0054] (1) Install a reflux condenser, a thermometer and an inlet pipe in a three-neck round bottom flask, add caprolactam and toluene under nitrogen protection, add triethylamine under magnetic stirring, heat the oil bath to 85-90°C, and dilute p-methyl Benzoyl chloride is suspended in toluene and slowly added to the reaction solution through a constant pressure titration funnel. After the addition, it is protected under nitrogen and refluxed in toluene for 5-6 hours. The product was precipitated and filtered to obtain a white solid, which was washed with toluene 3-5 times, filtered with suction, and dried to obtain a white solid of 4-chloromethylbenzoyl caprolactam;

[0055] Wherein, the ...

Embodiment 2

[0070] This embodiment provides a method for preparing a low-temperature oxygen bleaching composite active agent. The specific steps of the preparation method for the composite active agent are as follows:

[0071] (1) Preparation of N-[4-(triethylaminomethyl)benzoyl]caprolactam chloride

[0072] (1) Install a reflux condenser, a thermometer and an inlet pipe in a three-neck round bottom flask, add caprolactam and toluene under nitrogen protection, add triethylamine under magnetic stirring, heat the oil bath to 85-90°C, and dilute p-methyl Benzoyl chloride is suspended in toluene and slowly added to the reaction solution through a constant pressure titration funnel. After the addition, it is protected under nitrogen and refluxed in toluene for 5-6 hours. The product was precipitated and filtered to obtain a white solid, which was washed with toluene 3-5 times, filtered with suction, and dried to obtain a white solid of 4-chloromethylbenzoyl caprolactam;

[0073] Wherein, the ...

Embodiment 3

[0088] This embodiment provides a method for preparing a low-temperature oxygen bleaching composite active agent. The specific steps of the preparation method for the composite active agent are as follows:

[0089] (1) Preparation of N-[4-(triethylaminomethyl)benzoyl]caprolactam chloride

[0090] (1) Install a reflux condenser, a thermometer and an inlet pipe in a three-neck round bottom flask, add caprolactam and toluene under nitrogen protection, add triethylamine under magnetic stirring, heat the oil bath to 85-90°C, and dilute p-methyl Benzoyl chloride is suspended in toluene and slowly added to the reaction solution through a constant pressure titration funnel. After the addition, it is protected under nitrogen and refluxed in toluene for 5-6 hours. The product was precipitated and filtered to obtain a white solid, which was washed with toluene 3-5 times, filtered with suction, and dried to obtain a white solid of 4-chloromethylbenzoyl caprolactam;

[0091] Wherein, the ...

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Abstract

The invention discloses a preparation method of a low-temperature oxygen bleaching composite activator. The preparation method comprises the following steps: firstly, preparing N-[4-(triethylanmine methyl) benzoyl] caprolactam chloride and sodium nonanoyloxybenzene sulfonate, and then mixing and compounding to obtain the low-temperature oxygen bleaching composite activator. The preparation method of the low-temperature oxygen bleaching composite activator is simple, feasible and low in preparation cost; according to the prepared low-temperature oxygen bleaching composite activator, the fabric is subjected to efficient bleaching by bleaching and scouring in a low-temperature near-neutral condition; and the bleaching system can have the advantage of saving energy sources, and does not cause obvious injuries to the fabric.

Description

technical field [0001] The invention belongs to the field of pretreatment of textiles, and in particular relates to a preparation method and application of a low-temperature oxygen bleaching composite activator. Background technique [0002] Textile dyeing and finishing has always been a high-emission, high-pollution, high-energy-consuming industry. Due to its prominent water and energy consumption, high environmental pollution, and high cost of comprehensive treatment, it has become a bottleneck restricting the sustainable development of textile dyeing and finishing. Therefore, it is an important and urgent task that directly concerns the sustainable development of the textile dyeing and finishing industry to promote energy saving and consumption reduction and environmental protection production in the textile dyeing and finishing industry. [0003] A long time ago, the hydrogen peroxide bleaching process has undergone great changes, from intermittent to continuous, from hi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06L3/02D06L4/12D06L4/13
Inventor 陈菊珍陈菊媛
Owner SUZHOU CHENHENG WEAVING
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