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A kind of synthetic method of diethyl-three [(1-alkyl-3-carbamoylmethyl) imidazolium salt] surfactant

A carbamoyl methyl and surfactant technology, applied in the field of surfactant synthesis, can solve the problems of low solubilizing ability and wetting ability, weak adsorption and self-polymerization, endangering production safety and the like, and achieves simplification. The post-treatment process and reaction conditions are easy to control, and the effect of reducing the reaction cost

Inactive Publication Date: 2016-08-24
QIQIHAR UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that traditional surfactant molecules have poor surface activity, weak adsorption and self-aggregation, low solubilizing ability and wetting ability, and high Krafft characteristics, and the existing surfactant synthesis The method uses a solvent as a reaction medium, resulting in high production costs, difficult post-processing, and endangering production safety; and a diethyl-three [(1-alkyl-3-carbamoylmethyl) imidazolium salt] is provided The synthetic method of surfactant

Method used

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  • A kind of synthetic method of diethyl-three [(1-alkyl-3-carbamoylmethyl) imidazolium salt] surfactant
  • A kind of synthetic method of diethyl-three [(1-alkyl-3-carbamoylmethyl) imidazolium salt] surfactant
  • A kind of synthetic method of diethyl-three [(1-alkyl-3-carbamoylmethyl) imidazolium salt] surfactant

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specific Embodiment approach 1

[0018] Specific embodiment one: this embodiment is a kind of diethyl-three [(1-alkyl-3-carbamoylmethyl) imidazolium salt] surfactant, and its general structural formula is as follows: Wherein n is 6, 8, 10, 12 or 14; X is Cl.

[0019] The diethyl-three [(1-alkyl-3-carbamoylmethyl) imidazolium salt] surfactant described in this embodiment contains a plurality of amide bonds and a plurality of imidazole ring nitrogen positive ion heads, and has Higher surface activity, better water solubility, adsorption, oil solubility and corrosion inhibition performance, etc. The molecular structure characteristics of this type of surfactant make it both biodegradable and bactericidal.

specific Embodiment approach 2

[0020] Specific embodiment two: present embodiment is a kind of synthetic method of diethyl-three [(1-alkyl-3-carbamoylmethyl) imidazolium salt] surfactant, specifically completes according to the following steps:

[0021] One, synthetic trichloroacetyl diethylenetriamine: 1., chloroacetyl chloride is dissolved in methylene chloride, obtains chloroacetyl chloride / methylene chloride solution, the chloroacetyl chloride / methylene chloride solution described in step 1. The concentration of chloroacetyl chloride in the medium is 2.0mmol / mL~3.0mmol / mL; ②, add diethylenetriamine and triethylamine into dichloromethane, and stir in an ice bath at a stirring speed of 600rpm~800rpm, then Use a constant pressure dropping funnel to drop in the chloroacetyl chloride / dichloromethane solution at a constant dropping rate of 2mL / min~4mL / min. After the dropwise addition, continue to stir the reaction at a stirring speed of 600rpm~800rpm for 5h~7h to obtain the reaction product , the mol ratio of...

specific Embodiment approach 3

[0027] Specific embodiment three: the difference between this embodiment and specific embodiment two is: in step one (3), use under the conditions of 60 rpm to 100 rpm, water bath temperature at room temperature and vacuum degree of 0.08 MPa to 0.09 MPa in step 1. The dichloromethane in the reaction product was removed under reduced pressure by a rotary evaporator to obtain a solvent-free reaction product. Others are the same as in the second embodiment.

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Abstract

A method for synthesizing diethyl-tris[(1-alkyl-3-carbamoylmethyl)imidazolium salt] surfactant, which relates to a method for synthesizing surfactant. The purpose of the present invention is to solve the problem that the traditional surfactant molecules have poor surface activity, weak adsorption and self-polymerization, and the existing surfactant synthesis method uses a solvent as a reaction medium, resulting in high production costs, difficult post-processing, and endangering production safety. The problem. Synthesis method: 1. synthesizing trichloroacetyl diethylenetriamine; 2. synthesizing N-alkylimidazole; 3. synthesizing surfactant, namely obtaining diethyl-tri[(1-alkyl-3-carbamoyl Methyl)imidazolium salt] surfactant. The present invention is mainly used for synthesizing diethyl-tris [(1-alkyl-3-carbamoylmethyl) imidazolium salt] surfactant.

Description

technical field [0001] The present invention relates to a kind of synthetic method of surfactant. Background technique [0002] Traditional surfactant molecules are composed of a hydrophobic group and a hydrophilic group, the critical micelle concentration is high, pC 20 value and gamma cmc The value is larger. Therefore, traditional surfactants have poor surface activity, weak adsorption and self-aggregation, and low solubilization and wetting capabilities. Moreover, the single ionic head group structure makes the Krafft point of the surfactant higher, which has great limitations in the field of practical application. [0003] When conventional methods are used to synthesize surfactants, solvents are usually used as the reaction medium, which not only increases the cost and increases the difficulty of post-processing during industrial production, but also causes harm to equipment, people and the environment. Therefore, the existing surfactant synthesis method uses a sol...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01F17/18B01F17/22C07D233/56C09K23/18C09K23/22
Inventor 郑永杰吕键裴迅
Owner QIQIHAR UNIVERSITY