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Method for synthesizing polyquaternary ammonium salt

A polyquaternary ammonium salt and synthesis method technology, which is applied in coatings, conductive coatings, epoxy resin coatings, etc., can solve the problems of high cost of use, incompatibility of epoxy resins, and large additions, so as to reduce orderly Sexuality and symmetry, improvement of antistatic performance, effect of improving exercise ability

Active Publication Date: 2020-01-24
NANJING FORESTRY UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, there are not only few types of polymer antistatic agents, but most of them are polymers with pendant quaternary ammonium salt groups on the side chains. It is difficult to meet the market demand by reducing the physical and chemical properties of the main resin material. Therefore, it is of great practical significance to develop the production technology of polymer antistatic agents with less dosage and good antistatic performance.
[0003] Existing polyquaternary ammonium salts such as polyepichlorohydrin-dimethylene, polyepichlorohydrin-diethylammonium and polydimethyldiallylammonium chloride are generally water-soluble , mainly used as flocculant and bactericide, incompatible with epoxy resin, can not be used as antistatic agent of epoxy resin coating

Method used

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  • Method for synthesizing polyquaternary ammonium salt
  • Method for synthesizing polyquaternary ammonium salt
  • Method for synthesizing polyquaternary ammonium salt

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] According to the mass percentages of the organic solvent, secondary amine, epihalohydrin and acid in Example 1 in Table 1, first, under nitrogen protection and room temperature water bath cooling, the organic solvent and the secondary amine were mixed, and the epoxy halogen was added dropwise under stirring Addition reaction of propane, continue to react for 0.5h after epihalohydrin is added dropwise to obtain a solution of tertiary amine compound; secondly, heat the solution of tertiary amine compound to carry out quaternization polymerization reaction, the reaction temperature is 50°C, and the reaction time is 25h. After the reaction is completed, a solution of polyquaternium hydrohalide is obtained; thirdly, the solution of polyquaternium hydrohalide is treated with a strong basic anion exchange resin until the liquid phase detects no halogen ions, and then filtered to obtain polyquaternium Alkali solution; Fourth, under cooling in a water bath at room temperature, ne...

Embodiment 2

[0038]According to the mass percentages of the organic solvent, secondary amine, epihalohydrin and acid in Example 2 in Table 1, first, under nitrogen protection and room temperature water bath cooling, the organic solvent and the secondary amine were mixed, and the epoxy halogen was added dropwise under stirring. Addition reaction of propane, continue to react for 1.5h after epihalohydrin is added dropwise to obtain a solution of tertiary amine compound; secondly, heat the solution of tertiary amine compound for quaternization polymerization reaction, the reaction temperature is 60°C, and the reaction time is 20h. After the reaction is completed, a solution of polyquaternium hydrohalide is obtained; thirdly, the solution of polyquaternium hydrohalide is treated with a strong basic anion exchange resin until the liquid phase detects no halogen ions, and then filtered to obtain polyquaternium Alkali solution; Fourth, under cooling in a water bath at room temperature, neutralize ...

Embodiment 3

[0040] According to the mass percentages of the organic solvent, secondary amine, epihalohydrin and acid in Example 3 in Table 1, first, under nitrogen protection and room temperature water bath cooling, the organic solvent and the secondary amine were mixed, and the epoxy halogen was added dropwise under stirring. Addition reaction of propane, continue to react for 2.5h after epihalohydrin is added dropwise to obtain a solution of tertiary amine compound; secondly, heat the solution of tertiary amine compound for quaternization polymerization reaction, the reaction temperature is 65°C, and the reaction time is 15h. After the reaction is completed, a solution of polyquaternium hydrohalide is obtained; thirdly, the solution of polyquaternium hydrohalide is treated with a strong basic anion exchange resin until the liquid phase detects no halogen ions, and then filtered to obtain polyquaternium Alkali solution; Fourth, under cooling in a water bath at room temperature, neutralize...

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Abstract

The invention relates to a method for synthesizing a polyquaternary ammonium salt. According to the method, an organic solvent, secondary amine, epihalohydrin, acid, strong-base anion exchange resin and the like serve as raw materials, the polarity of the secondary amine is lowered through increasing chain length of a hydrocabon group carbon chain in the secondary amine, thus, the polarity of thepolyquaternary ammonium salt is lowered, and the polyquaternary ammonium salt with good intermiscibility with epoxy resin and good anti-electrostatic property is synthesized. A polyquaternary ammoniumsalt macromolecular antistat is developed for epoxy resin coating materials. The method has the characteristics that the energy consumption is low, the environmental pollution is light, the production process is simple and is short in rout, the investment of large-scale production is small, and the production efficiency is high, so that the industrialization prospect is good.

Description

technical field [0001] The invention relates to a synthesis method of polyquaternary ammonium salt, belonging to the technical field of polymer preparation. Background technique [0002] Polymer antistatic agents have attracted extensive attention due to their excellent antistatic properties. There are reports in the literature about the research on polymer antistatic agents for polymer materials such as nylon, PE, PP, ABS, PVC, polyurethane, polystyrene and polyoxymethylene, and the polymer antistatic agents that can be used for epoxy resin coatings are fresh. See report. At present, there are not only few types of polymer antistatic agents, but most of them are polymers with pendant quaternary ammonium salt groups on the side chains. Reducing the physical and chemical properties of the main resin material is difficult to meet market demand. Therefore, it is of great practical significance to develop a production technology for polymer antistatic agents with less dosage a...

Claims

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Application Information

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IPC IPC(8): C08G73/02C09D163/00C09D5/24
CPCC08G73/0213C09D5/24C09D163/00C08L79/02
Inventor 刘福生张端巍郜伟郭斌银鹏
Owner NANJING FORESTRY UNIV
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