Synthesis method of bis quaternary ammonium salt cationic surfactant

A technology of surfactant and biquaternary ammonium salt, which is applied in chemical instruments and methods, preparation of organic compounds, preparation of aminohydroxy compounds, etc. the effect of purification

Inactive Publication Date: 2017-03-29
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Both method (1) and method (2) use an organic solvent; method (3) is a one-step method without using an organic solvent, and in the actual synthesis process of method (3), the dosage of hydrochloric acid should be 1% of the molar amount of tertiary amine / 2, it is not easy to determine accurately during the actual operation

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] (1) First add 800, 900, 920, 1000g of deionized water into the reactor, then add 213g of N,N-dimethyl long-chain alkyl tertiary amine, stir evenly (stirring speed 100rpm) and then add 100g of 30% Hydrochloric acid, after stirring and reacting for 1.0h, measure the pH value and control it at 6-7;

[0019] (2) Add 95g of epichlorohydrin into the above reaction kettle, stir evenly (stirring speed 200rpm), the temperature gradually rises to 50°C, reacts at a constant temperature for 0.5h, and naturally cools down to room temperature to obtain a diquaternary ammonium salt cationic surface Active agent, the yield after purification is 98.5%.

Embodiment 2

[0021] (1) First add 900g of deionized water to the reactor, then add 265g of N,N-dimethyl long-chain alkyl tertiary amine, stir evenly (stirring speed 150rpm), then add 110g of 30% hydrochloric acid, and stir for 1.5h Finally, measure the pH value and control it at 6-7;

[0022] (2) Add 90g of epichlorohydrin into the above reaction kettle, stir evenly (stirring speed 250rpm), the temperature rises gradually to 60°C, react at constant temperature for 0.7h, cool down to room temperature naturally, and obtain the surface of diquaternary ammonium salt cation Active agent, the yield after purification is 98.3%.

Embodiment 3

[0024] (1) First add 920g of deionized water to the reactor, then add 236g of N,N-dimethyl long-chain alkyl tertiary amine, stir well (stirring speed 180rpm), then add 115g of 30% hydrochloric acid, and stir for 1.8h Finally, measure the pH value and control it at 6-7;

[0025] (2) Add 92g of epichlorohydrin into the above reaction kettle, stir evenly (stirring speed 220rpm), the temperature gradually rises to 65°C, reacts at a constant temperature for 0.6h, and naturally cools down to room temperature to obtain a diquaternary ammonium salt cationic surface Active agent, the yield after purification is 98.8%.

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Abstract

The invention provides a synthesis method of a bis quaternary ammonium salt cationic surfactant. The method is simple and quick to operate; by using water as the reaction solvent, the cost is low; and the yield is up to 98% after purification. The synthesized bis quaternary ammonium salt can be widely used in industrial water treatment, performs the bactericidal and corrosion inhibition functions, and is also applicable to decompression and augmented injection of low-permeability oilfields.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, and in particular relates to a synthesis method of a diquaternary ammonium salt cationic surfactant. Background technique [0002] Diquaternary ammonium surfactants are a new class of cationic gemini surfactants that emerged in the early 1970s. It is composed of two or more amphiphilic molecules connected by a linking group at or near the hydrophilic head group through chemical bonds. Compared with traditional single-chain surfactants, Gemini surfactants have low critical micelle concentration (cmc), strong ability to reduce surface tension (low γcmc and high pC20 value), excellent hydrotrope, wettability and detergency Strong ability, better sterilization and corrosion inhibition, special rheology and biological safety and many other unique properties. It can greatly promote the close arrangement of its "monomer" ionic surfactants in the interface or molecular aggregates, the surface ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C213/04C07C215/40B01F17/18C09K23/18
CPCC07C213/04C09K23/00
Inventor 张守献徐闯徐鹏袁长忠潘永强宋欣孙刚正胡婧段传慧冯云
Owner CHINA PETROLEUM & CHEM CORP
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