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Trimeric quaternary ammonium salt type cationic surface active agent and preparation method thereof

A surfactant and polyquaternary ammonium salt technology is applied in the preparation of amino compounds, chemical instruments and methods, preparation of organic compounds, etc., and can solve the problems of difficulty in mass synthesis and application, high cost of raw materials, and many reaction steps, etc. Achieving the effects of good metal corrosion inhibition performance, simple preparation method and few reaction steps

Inactive Publication Date: 2015-07-08
CHONGQING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the yield of this method is not high, the cost of raw materials is high, the reaction steps are many, the cycle is long and other shortcomings, it is difficult to synthesize and apply in large quantities

Method used

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  • Trimeric quaternary ammonium salt type cationic surface active agent and preparation method thereof
  • Trimeric quaternary ammonium salt type cationic surface active agent and preparation method thereof
  • Trimeric quaternary ammonium salt type cationic surface active agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] In this example, 1.07 g (3 mmol) of haloalkane and 1.92 g (9 mmol) of long-chain dimethyl tertiary amine were used as a solvent, and about 30 ml of isopropanol was added as a solvent. The nitrogen passage time was 20 minutes, and the reaction temperature was 70 ° C. Stir the reaction The time is 12h, and the obtained trimerized quaternary ammonium salt type cationic surfactant is denoted as TCAB-12. In this embodiment, the long-chain dimethyl tertiary amine is dodecyl dimethyl tertiary amine, and the haloalkane is benzylbenzene tribromide.

Embodiment 2

[0057] In this example, 1.07g (3mmol) of benzyl benzotribromide was used for haloalkane, 2.01g (9.45mmol) of long-chain dimethyl tertiary amine was used, and about 30ml of isopropanol was added as a solvent, and the time for passing nitrogen was 20min. , the reaction temperature is 85°C, the stirring time is 16h, and the obtained trimerized quaternary ammonium salt cationic surfactant is designated as TCAB-12. In this embodiment, the long-chain dimethyl tertiary amine is dodecyl dimethyl tertiary amine, and the haloalkane is benzylbenzene tribromide.

Embodiment 3

[0059] In this example, 1.07 g (3 mmol) of benzyl benzotribromide was used as the haloalkane, 2.13 g (10 mmol) of the long-chain dimethyl tertiary amine was used, and about 30 ml of isopropanol was added as a solvent, and the nitrogen passage time was 20 min. The stirring temperature was 95° C., and the stirring time was 18 hours. The obtained trimerized quaternary ammonium salt type cationic surfactant was designated as TCAB-12. In this embodiment, the long-chain dimethyl tertiary amine is dodecyl dimethyl tertiary amine, and the haloalkane is benzylbenzene tribromide.

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Abstract

The invention discloses a trimeric quaternary ammonium salt type cationic surface active agent which is shown in a chemical structural formula in the specification, wherein R=-C8H17, -C12H25, -C16H33 or -C18H37; and X=Cl or Br. Moreover, the invention further discloses a preparation method of the trimeric quaternary ammonium salt type cationic surface active agent. The agent is prepared through the quaternary amination reaction of long-chain dimethyl tert-amine and alkyl halide. The preparation method has the advantages of simplicity in operation, inexpensive and easily obtained raw materials, less reaction steps, moderate reaction conditions, easiness in control, low equipment requirements and low preparation cost. Moreover, the novel trimeric quaternary ammonium salt type cationic surface active agent synthesized by the invention has the performances such as high surface activity, good bactericidal performance, strong metal corrosion inhibition and the like, and is particularly suitable for emulsion polymerization of cationic monomers and synthesis of mesoporous materials when being used as an emulsifying agent.

Description

technical field [0001] The invention relates to a class of ionic surfactants with multiple hydrophilic groups and multiple hydrophobic groups belonging to long-chain fatty quaternary ammonium salt derivatives and a preparation method thereof, in particular to a trimerized quaternary ammonium salt cationic surfactant and Its preparation and purification method. Background technique [0002] Traditional surfactants consist of a hydrophilic group and a hydrophobic group, but the separation tendency caused by the charge repulsion or hydration between the ionic head groups makes it difficult for them to be closely arranged at the interface or in molecular aggregates, making them Low surface activity. Although the solubilization, thickening, dispersibility, and flocculation of polymer surfactants are good, it is usually difficult to form a stable orientation arrangement on the interface, and its surface activity is weaker than that of traditional surfactants. It takes a long tim...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C211/63C07C209/12B01F17/18C09K23/18
Inventor 陈志许俊强李珏秀邢志林
Owner CHONGQING UNIV OF TECH