Hyperbranched ammonium salt type cationic surface active agent and preparation and application

A surfactant and cationic technology, which is applied in the field of hyperbranched ammonium salt cationic surfactant and synthesis, can solve the problems of particle re-aggregation or precipitation, weak adsorption of solid particles, poor system stability, etc., and achieve the goal of promoting homogeneity Formation, good dispersion effect, effect under mild conditions

Active Publication Date: 2016-06-15
EAST CHINA NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages of traditional small-molecule surfactants are: the adsorption on the surface of solid particles is not firm, and they are easily dissociated from the surface, resulting in re-agglomeration or precipitation of particles
[0004] The application of prior art cationic surfactant...

Method used

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  • Hyperbranched ammonium salt type cationic surface active agent and preparation and application
  • Hyperbranched ammonium salt type cationic surface active agent and preparation and application
  • Hyperbranched ammonium salt type cationic surface active agent and preparation and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] 1) Synthesis of hyperbranched ammonium salt cationic surfactants.

[0046] Phenol and oxalic acid, which is 1% by mass percentage based on the total amount of monomers, are added to the reaction flask, and nitrogen protection is introduced, and the temperature is raised to 100° C. under stirring, and styrene is slowly added dropwise (the molar ratio of styrene to phenol is 1: 1.5), reacted for 4 hours, stopped the reaction and cooled to room temperature to obtain 4-phenethylphenol with a yield of 94%.

[0047] Add 4-phenethylphenol and triethylamine with a mass percentage of 4% based on the total amount of monomers into the reaction flask, dissolve in absolute ethanol that is 5 times the total weight of the monomers, and heat up to 80°C under stirring , slowly drop epichlorohydrin (the molar ratio of 4-phenethylphenol to epichlorohydrin is 1:1.1), react for 4h, stop the reaction and cool to room temperature, that is, 1-cyclopropylmethoxy-4- Phenylethylbenzene, yield 90...

Embodiment 2

[0064] Phenol and 1% concentrated phosphoric acid based on the total amount of monomers were added to the reaction flask, and nitrogen protection was introduced, and the temperature was raised to 100°C under stirring, and styrene was slowly added dropwise (the molar ratio of styrene to phenol was 1 : 1.5), reacted for 4h, stopped the reaction and cooled to room temperature to obtain 4-phenethylphenol with a yield of 98%.

[0065] Add 4-phenethylphenol and potassium carbonate with a mass percentage of 4% based on monomers into the reaction flask, dissolve in absolute ethanol that is 5 times the total mass of the monomers, heat up to 80°C under stirring, and slowly drop Add epichlorohydrin (the molar ratio of 4-phenethylphenol to epichlorohydrin is 1:1.1), react for 4 hours, stop the reaction and cool to room temperature to obtain 1-cyclopropylmethoxy-4-phenethyl Benzene, yield 92%.

[0066] Dissolve polyethyleneimine in acetone 5 times the total mass of the monomers, add it to...

Embodiment 3

[0070] Phenol and 1% concentrated nitric acid based on the total amount of monomers were added to the reaction flask, and nitrogen protection was introduced, and the temperature was raised to 100°C under stirring, and styrene was slowly added dropwise (the molar ratio of styrene to phenol was 1 : 1.5), reacted for 5h, stopped the reaction and cooled to room temperature to obtain 4 phenethylphenol with a yield of 98%.

[0071] Add 4-phenethylphenol and potassium hydroxide with a mass percentage of 4% based on the total amount of monomers into the reaction flask, dissolve in absolute ethanol that is 5 times the total weight of the monomers, and heat up to 80°C under stirring , slowly drop epichlorohydrin (the molar ratio of 4-phenethylphenol to epichlorohydrin is 1:1.1), react for 4h, stop the reaction and cool to room temperature, that is, 1-cyclopropylmethoxy-4- Phenylethylbenzene, yield 90%.

[0072] Dissolve polyethyleneimine in acetone 5 times the total mass of the monomer...

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Abstract

The invention discloses a hyperbranched ammonium salt type cationic surface active agent and a preparation method and application thereof. The hyperbranched ammonium salt type cationic surface active agent is formed by coupling polyethylene, styrene and phenol as monomers. The preparation method comprises the following steps that 1, 4-phenethyl phenol is synthesized; 2, 1-cyclopropyl methoxy-4-phenethyl benzene is synthesized; 3, polyethylene imido 1-cyclopropyl methoxyl-4-phenethyl benzene (HJM) is synthesized. The critical micelle concentration (CMC) is measured, and compared with a cationic surface active agent adopted on the market, the performance of the hyperbranched ammonium salt type cationic surface active agent is remarkably improved. The surface active agent is applied to pesticide stability, papermaking, nanocomposite modification, protein separation and inorganic particle dispersion, it is found that the effect of the hyperbranched ammonium salt type cationic surface active agent is best, and practical value is high.

Description

technical field [0001] The invention belongs to the technical field of surfactants. The invention relates to pesticides, papermaking and inorganic particles, and is a hyperbranched ammonium salt type cationic surfactant and a synthesis method. Background technique [0002] Hyperbranched polymers are a class of highly branched polymers with a three-dimensional structure. Hyperbranched polymers have the characteristics of easy modification of multi-terminal groups, low melting point, good fluidity, and good solubility. Utilizing these characteristics, the hyperbranched polymer can be designed into an amphiphilic structure, which has better surface activity, reduces the interfacial tension between the water phase and the oil phase, and becomes a surfactant with excellent performance. Can be widely used in pigments, dyes, aqueous coal slurry, pesticides and other industries. The disadvantage of traditional small-molecule surfactants is that the adsorption on the surface of so...

Claims

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Application Information

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IPC IPC(8): C08G73/02B01F17/16C09K23/16
CPCC08G73/0206C09K23/16
Inventor 徐敏黄海龙葛浩
Owner EAST CHINA NORMAL UNIV
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