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Method for preparing cationic grafting agent with multi-reactive groups

A cationic and grafting agent technology, applied in the field of preparation of chemicals for textile modification, can solve the problems of poor dyeing effect of blended fabrics, difficulty in popularization, dyeing pollution, etc.

Inactive Publication Date: 2010-06-23
JINQIU TEXTILE ARRANGEMENT +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to solve the problems of poor dyeing effect of natural fibers and blended fabrics containing natural fibers, serious dyeing pollution, and poor modification effect, high cost, and difficulty in popularization of modifiers currently used to improve the dyeing effect of said fabrics. Provide the preparation method of multi-active group cationic grafting agent of the present invention, the grafting agent of the present invention has multi-active group, can react with the cellulose grafting of fabric, improve fabric dyeing property

Method used

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  • Method for preparing cationic grafting agent with multi-reactive groups
  • Method for preparing cationic grafting agent with multi-reactive groups
  • Method for preparing cationic grafting agent with multi-reactive groups

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Chloro-triazine ammonium chloride derivative——2,4-di-[2-hydroxy-3-chloropropyl-dimethylaminopropylamino]-6-chloro-triazine ammonium chloride preparation:

[0018] Add 1 mole of cyanuric chloride to a three-neck flask with 200 g of ice water solution, a stirrer, and a thermometer, and slowly add 0.34 mole of N, N-dimethylpropylenediamine dropwise under stirring conditions at 0-5 ° C. Hydrochloride, with Na 2 CO 3 Adjust and control the pH value to 3-4, stir until the pH of the reaction solution remains constant, raise the temperature to 40-45°C, add 0.34mol of N,N-dimethylpropylenediamine hydrochloride under stirring, and use Na 2 CO 3 Adjust and control the pH value to 5-6, stir and react for 1.5h, add 15ml of 35% hydrochloric acid solution dropwise, then slowly add 0.7mol of epichlorohydrin dropwise, raise the temperature to 85°C after the addition, and keep the temperature for 4h to obtain the content It is a 32% solution of 2,4-bis-[2-hydroxy-3-chloropropyl-dimet...

Embodiment 2

[0022] Chloro-triazine ammonium chloride derivative——2,4-di-[2-hydroxy-3-chloropropyl-dimethylaminopropoxy]-6-chloro-triazine ammonium chloride preparation:

[0023] Add 1 mole of cyanuric chloride to a three-neck flask with 200 g of ice water solution, a stirrer and a thermometer, and slowly add 0.34 mole of 3-N, N-dimethylaminopropanol dropwise under stirring at 0-5 °C Hydrochloride, with Na 2 CO 3 Adjust and control the pH value to 3-4, stir until the pH of the reaction solution remains constant, raise the temperature to 40-45°C, and add 0.34mol of 3-N,N-dimethylaminopropanol hydrochloride under stirring, use Na 2 CO 3 Adjust and control the pH value to 5-6, stir and react for 1.5h, add 15ml of 35% hydrochloric acid solution dropwise, then slowly add 0.7mol of epichlorohydrin dropwise, raise the temperature to 85°C after the addition, and keep the temperature for 4h to obtain the content It is a 32% solution of 2,4-bis-[2-hydroxy-3-chloropropyl-dimethylaminopropoxy]-6-c...

Embodiment 3

[0027] Monochloro-triazine ammonium chloride derivative——2,4-di-[2-hydroxy-3-chloropropyl-dimethylaminoethoxy]-6-chloro-triazine ammonium chloride preparation:

[0028] The raw material 3-N that is added for the first time and the second time of embodiment 2, N-dimethylaminopropanol is changed into 3-N, N-dimethylaminoethanol, other conditions are identical with example 8, and the prepared content is 32% solution of 2,4-bis-[2-hydroxy-3-chloropropyl-dimethylaminoethoxy]-6-chloro-triazine in ammonium chloride. The solution is a colorless transparent liquid. The solution was evaporated, DMF recrystallized, IR, HNMR proved the product structure as follows

[0029]

[0030] The product does not need to be separated and purified, and can be directly applied to the modification of cellulose fibers.

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Abstract

The invention relates to a method for preparing a cationic grafting agent with multi-reactive groups, which comprises the following steps: adding N,N-dimethyl diaminopropane or N,N-dimethylaminoethanol and hydrochloride solution of N,N-dimethylamino propanol into cyanuric chloride water suspension at the temperature of 0-10 DEG C, leading the molar ratio of cyanuric chloride to the N,N-dimethyl diaminopropane or the N,N-dimethylaminoethanol and the N,N-dimethylamino propanol to be 1: 0.34, using base for adjusting and controlling the pH to be 3-4, increasing the temperature to 35-45 DEG C after full reaction, and further adding the N,N-dimethyl diaminopropane or the N,N-dimethylaminoethanol, leading the molar ratio of the N,N-dimethyl diaminopropane or the N,N-dimethylaminoethanol to the cyanuric chloride to be 0.4:1, using hydrochloric acid for adjusting the pH to be 1-2 after full reaction, increasing the temperature to 70-85 DEG C, adding epichlorohydrin, leading the molar ratio of the epichlorohydrin to the cyanuric chloride to be 0.7:1, and obtaining a monochlorotriazine ammonium chloride derivative. The grafting agent is used for graft modification of fabric, thereby improving the dyeing effect.

Description

technical field [0001] The invention relates to a preparation method of chemicals for textile modification, especially a preparation method of chemicals for modification of natural fiber fabrics before dyeing. Background technique [0002] Natural fibers and their blends are commonly dyed with reactive and direct dyes. However, the dye uptake rate and fixation rate of the dye are only about 60-80%, and the remaining 20% ​​of the dye is discharged with the dye liquor wastewater, resulting in an increase in dye consumption and cost. Moreover, a large amount of water is required for cleaning, which increases the burden of sewage discharge and treatment. Especially when dyeing, a large amount of inorganic salts (sodium chloride and sodium sulfate, 30-100 grams per liter of dyeing solution) must be added. The discharge of salty printing and dyeing wastewater has destroyed the ecological environment of the water. The high penetration of salt leads to salinization of the soil aro...

Claims

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Application Information

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IPC IPC(8): C07D251/50C07D251/40C07D251/30
Inventor 谢孔良陆金根孙燕高秀蕊罗海娟胡国君
Owner JINQIU TEXTILE ARRANGEMENT
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