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Application of multifunctional cationic modifier in cellulose material modification

A cationic modifier and cellulose technology, applied in the field of dyeing and finishing, can solve the problems of damage, low grafting efficiency of cellulose fibers and fabrics, waste of raw materials, etc.

Active Publication Date: 2021-09-07
JIANGSU OCEAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the cationic modification of cellulose fiber fabrics, small molecules N-(2,3-epoxychloropropyl)trimethylammonium chloride, N-(2,3-epoxychloropropyl) Triethylammonium chloride, and N-(2-hydroxy-3-chloropropyl)triethylammonium chloride or N-(2-hydroxy-3-chloropropyl)trimethylchloride with similar functions Ammonium, etc., but because these small molecule cationic modifiers have a single active point (epoxy or chloropropyl group) and are easily damaged by water and caustic soda catalysts, their grafting efficiency on cellulose fibers and fabrics Not high, serious waste of raw materials

Method used

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  • Application of multifunctional cationic modifier in cellulose material modification
  • Application of multifunctional cationic modifier in cellulose material modification
  • Application of multifunctional cationic modifier in cellulose material modification

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The preparation of the cotton fiber (1) of embodiment 1 multifunctional cationic modification

[0027] Weigh 12 grams of ethylenediamine and 300 grams of chloroform and mix them in the reaction kettle, control the temperature of the liquid in the reaction kettle to 45-65 ° C, slowly add 40 grams of methyl methacrylate, and continue to stir and react for 6 hours after the addition; then reduce the reaction temperature When the temperature of the liquid in the kettle reaches 0-10°C, add 40 grams of epichlorohydrin dropwise. After feeding, raise the temperature inside the reactor to 25°C and continue to stir and react for 2 hours; then raise the temperature inside the reactor to 70-90°C for 3 After 1 hour, reduce the temperature of the materials in the reactor to 5-10°C, add 120 grams of epichlorohydrin, keep warm and stir for 12 hours, and then rotary evaporate to remove chloroform and excess epichlorohydrin to obtain 128 grams of light brown paste multifunctional cationi...

Embodiment 2

[0029] The preparation of the cotton cloth (1) of embodiment 2 multifunctional cationic modification

[0030] According to the preparation method and operation steps of Example 1, ethylenediamine was replaced with 1,6-hexamethylenediamine, methyl methacrylate was replaced with methoxypolyethylene glycol-400 methacrylate, and 60 cotton fibers Change to cotton cloth to make multifunctional cationic modified cotton cloth (1), the calculated grafting efficiency is 95.7%.

Embodiment 3

[0031] The preparation of the cotton cloth (2) of embodiment 3 multifunctional cationic modification

[0032] According to the preparation method and operation steps of Example 1, ethylenediamine was replaced by 1,6-hexanediamine, methyl methacrylate was replaced by lauryl methacrylate, and 60 cotton fibers were replaced by cotton cloth, and many The functional cationic modified cotton cloth (2) has a calculated grafting efficiency of 92.5%.

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Abstract

The invention provides an application of a multifunctional cationic modifier in cellulose material modification. The multifunctional cationic modifier is prepared from organic diamine, acrylate and epichlorohydrin as raw materials, the molecular structure of the multifunctional cationic modifier contains a plurality of epoxy groups and also contains a plurality of chloropropyl groups, and the high cation grafting efficiency on a cellulose material is ensured; and the multifunctional cationic modifier is an oligomer of quaternary ammonium salt and carries abundant cationic charges, and the modified cellulose material prepared from the multifunctional cationic modifier is high in surface cation substitution degree.

Description

technical field [0001] The invention relates to the application of a cationic modifier in the modification of cellulose materials, in particular to a molecular structure containing polyethylene glycol chains, hydrophobic hydrocarbon groups, polyepoxy groups, poly(3-chloro-2-hydroxypropyl The application of base) polyquaternium salt in the modification of cellulose fiber or cellulose fabric belongs to the technical field of dyeing and finishing. Background technique [0002] Dyeing cellulose fibers or cellulose fabrics with reactive dyes is a common method to improve the soaping fastness of the fibers or fabrics, but generally cellulose fibers or fabrics are negatively charged in the dye bath process, and most The reactive dyes used for dyeing cellulose fibers and fabrics are all anionic. Due to electrostatic repulsion, the dyeing rate of reactive dyes on cellulose fibers and fabrics is not high. The way to solve this problem is to use a large amount of salt as a dyeing acce...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M15/61D06P1/52D06M101/06
CPCD06M15/61D06P1/5264D06M2101/06
Inventor 毛应明张开志俞建敏张田林
Owner JIANGSU OCEAN UNIV