Reactive beta-cyclodextrin quaternary ammonium salt as well as preparation method and application thereof

A technology of cyclodextrin and quaternary ammonium salt, which is applied in dyeing, textile and papermaking, etc., can solve the problems of irritating effect and affecting natural environmental protection, and achieve the effect of reducing pollution, easy operation and simple method

Active Publication Date: 2016-10-12
那坡同益新丝绸科技实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most cationic reagents are highly toxic and affect natural environmental protection, such as some amines, which are irritating to the respiratory tract, eyes, skin, etc. Therefore, research on environmentally friendly cationic reagents has become a hot issue

Method used

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  • Reactive beta-cyclodextrin quaternary ammonium salt as well as preparation method and application thereof
  • Reactive beta-cyclodextrin quaternary ammonium salt as well as preparation method and application thereof
  • Reactive beta-cyclodextrin quaternary ammonium salt as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043]A kind of preparation method of reactive β-cyclodextrin quaternary ammonium salt, the steps are as follows:

[0044] 1) To prepare β-cyclodextrin quaternary ammonium salt, first add β-cyclodextrin to a NaOH solution with a concentration of 1.25mol / L and stir at room temperature to fully dissolve it. The mass ratio of β-cyclodextrin to NaOH is 5: 1; then add choline chloride; finally, heat the mixed solution to 20°C, slowly add epichlorohydrin dropwise, react for 24 hours after the dropwise addition, and neutralize the reaction with HCl solution with a concentration of 1mol / L to stop the reaction. The reaction product can be evaporated and dried by rotary evaporation; the ratio of the amount of β-cyclodextrin, choline chloride and epichlorohydrin in the reaction system is 1:0.1:0.1;

[0045] 2) To prepare the reactive β-cyclodextrin quaternary ammonium salt, first place the NaOH solution with a concentration of 3mol / L in a low temperature and constant temperature stirring...

Embodiment 2

[0049] A kind of preparation method of reactive β-cyclodextrin quaternary ammonium salt, the steps are as follows:

[0050] 1) To prepare β-cyclodextrin quaternary ammonium salt, first add β-cyclodextrin to a NaOH solution with a concentration of 1.25mol / L and stir at room temperature to fully dissolve it. The mass ratio of β-cyclodextrin to NaOH is 5: 1; then add choline chloride; finally, heat the mixed solution to 40°C, slowly add epichlorohydrin dropwise, react for 20 hours after the dropwise addition, and neutralize the reaction with HCl solution with a concentration of 1mol / L to stop the reaction. The reaction product can be evaporated and dried by rotary evaporation; the ratio of the amount of β-cyclodextrin, choline chloride and epichlorohydrin in the reaction system is 1:2:2;

[0051] 2) To prepare the reactive-cyclodextrin quaternary ammonium salt, first place the NaOH solution with a concentration of 3mol / L in a low temperature and constant temperature stirring reac...

Embodiment 3

[0055] A kind of preparation method of reactive β-cyclodextrin quaternary ammonium salt, the steps are as follows:

[0056] 1) To prepare β-cyclodextrin quaternary ammonium salt, first add β-cyclodextrin to a NaOH solution with a concentration of 1.25mol / L and stir at room temperature to fully dissolve it. The mass ratio of β-cyclodextrin to NaOH is 5: 1; then add choline chloride; finally, heat the mixed solution to 60°C, slowly add epichlorohydrin dropwise, react for 16 hours after the dropwise addition, and neutralize the reaction with HCl solution with a concentration of 1mol / L to stop the reaction. The reaction product can be evaporated and dried by rotary evaporation; the ratio of the amount of β-cyclodextrin, choline chloride and epichlorohydrin in the reaction system is 1:4:4;

[0057] 2) To prepare the reactive β-cyclodextrin quaternary ammonium salt, first place the NaOH solution with a concentration of 3mol / L in a low temperature and constant temperature stirring re...

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Abstract

The invention relates to reactive beta-cyclodextrin quaternary ammonium salt as well as a preparation method and application thereof. The reactive beta-cyclodextrin quaternary ammonium salt is synthesized through two steps, namely, step 1, taking beta-cyclodextrin, choline chloride and epoxy chloropropane as raw materials to be subjected a ring opening substitution reaction to generate beta-cyclodextrin quaternary ammonium salt; step 2, taking the beta-cyclodextrin quaternary ammonium salt and a compound as raw materials to be subjected to a substitution reaction to generate the reactive beta-cyclodextrin quaternary ammonium salt. The reactive beta-cyclodextrin quaternary ammonium salt has no toxic or side effect; when being used for salt-free dyeing of an active dyestuff of cotton fabric, the reactive beta-cyclodextrin quaternary ammonium salt has relatively good dyeing effect; the pollution to the environment by salt in wastewater is reduced and treatment pressure of dyeing and finishing wastewater is alleviated; the dyed fabric has relatively good dyeing effect; the dyeing rate of the active dyestuff is 65 percent to 85 percent and the color fixation rate is 55 percent to 70 percent; the dry rubbing fastness is more than grade 4 and the wet rubbing fastness is more than grade 3.

Description

technical field [0001] The invention belongs to the technical field of textile dyeing auxiliaries, in particular to the preparation of a reactive β-cyclodextrin quaternary ammonium salt auxiliaries and its application in a short-flow one-bath two-step reactive dye cotton dyeing process. Background technique [0002] Reactive dyes not only have complete chromatograms, bright colors, and relatively simple application processes, but also can form covalent bonds with a variety of fibers, and have received widespread attention. However, the most prominent problem of reactive dyes is the low color fixation rate. In order to solve this problem, a large amount of inorganic salt is added in the traditional dyeing process of cotton fiber. According to the structure and color of the dye, the amount of salt used is generally 30-100g / L . Because the solubility of salt is large, and it is stable and difficult to remove from water, and the cost of removing salt is high, so the entry of al...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08B37/16D06P1/48D06P1/38D06P3/66
CPCC08B37/0012D06P1/38D06P1/48D06P3/008D06P3/66
Inventor 于晖贾永堂张玉梅罗行斌董凤春姜宜坛李翠婷
Owner 那坡同益新丝绸科技实业有限公司
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