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A kind of zwitterionic fluorocarbon surfactant and preparation method thereof

A fluorocarbon surface and zwitterionic technology, which is applied in the preparation of sulfonate esters, chemical instruments and methods, and the preparation of organic compounds. It can solve the problems of variety list, application restrictions, and small quantity, and achieve low cost and good emulsification properties. , easy to enlarge the effect of production

Active Publication Date: 2022-04-22
杨凌单色生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the development of fluorine-containing surfactants has been promoted, there is still a state of small quantity and single variety, and its application is limited

Method used

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  • A kind of zwitterionic fluorocarbon surfactant and preparation method thereof
  • A kind of zwitterionic fluorocarbon surfactant and preparation method thereof
  • A kind of zwitterionic fluorocarbon surfactant and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] A zwitterionic fluorocarbon surfactant, its molecular structural formula is:

[0016]

[0017] Among them, n is 2~6; R 1 for R is -CH 2 -COO - ,

[0018]

Embodiment 2

[0020] A preparation method of a zwitterionic fluorocarbon surfactant, wherein the molecular structural formula is realized by the following two-step reaction: adding 1-substituted aziridine reaction solution dropwise into a reaction bottle containing short-chain perfluorinated fatty acids for the second step One-step aziridine ring-opening reaction; then add quantitative anion etherification agent to the reaction solution to carry out the second step quaternization reaction, the resulting product is a kind of alkyne-containing zwitterionic surfactant, the synthesis equation is as follows:

[0021]

[0022] Wherein, n is 2~6; R is, R is -CH 2 -COO - ,

[0023] Further, the short-chain perfluoro fatty acid is perfluorobutyric acid, perfluorocaproic acid or perfluorooctanoic acid; the anionic etherification agent is sodium chloroacetate, sodium 2-chloroethylsulfonate or 3-chloro-2- Sodium hydroxypropanesulfonate; the 1-substituted aziridine is methyl aziridine-1-carbo...

Embodiment 3

[0025] Further, a preparation method of a zwitterionic fluorocarbon surfactant comprises dropping a 1-substituted aziridine reaction solution in a reaction flask containing a short-chain perfluoro fatty acid to carry out the first step of aziridine ring-opening reaction, wherein the short The molar ratio of chain perfluoro fatty acid and 1-substituted aziridine is 1:1, react at 50-90°C for 4-8h; 2 CO 3 Adjust the aqueous solution to alkaline to pH=9~10, add anion etherification agent, the molar ratio of anion etherification agent and 1-substituted aziridine is 2:1, react at 60~90°C for 5~10h; concentrate after the reaction The reaction solution was purified by toluene column chromatography to separate the product, and vacuum-dried to constant weight to obtain the product.

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Abstract

The invention discloses a zwitterionic fluorocarbon surfactant and a preparation method thereof. The zwitterionic fluorocarbon surfactant is prepared through the following steps: drop a 1-substituted aziridine reaction solution in a short-chain perfluorinated fatty acid reaction bottle to carry out the first step aziridine ring-opening reaction; Add quantitative anionic etherification agent to carry out the second step quaternization reaction, and the obtained product is a zwitterionic fluorocarbon surfactant, and its molecular structure formula is: wherein, n is 2-6; R 1 R is‑CH 2 ‑COO ‑ ,

Description

technical field [0001] The invention relates to a surfactant, in particular to a zwitterionic fluorocarbon surfactant and a preparation method thereof. It belongs to the field of chemical synthesis. Background technique [0002] Fluorine-containing hydrocarbon-based surfactants have aroused great interest of many researchers at home and abroad because of their good surface activity, thermal stability and chemical stability. At the same time, its fluorine-containing hydrocarbon group is hydrophobic and oil-repellent, and is widely used in petroleum exploration, coal metallurgy, machinery industry, medicine, agriculture and other fields. The excellent application performance of fluorine-containing surfactants has gradually been recognized by the market, and the demand is increasing. In the past ten years, new molecular structures of fluorine-containing surfactants have emerged continuously, and new types of fluorine-containing surfactants with double fluorocarbon chains, flu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C303/30C07C309/69C07C269/04C07C271/22C07C213/00C07C213/08C07C219/06C09K23/18C09K23/28C09K23/34
CPCC07C303/30C07C309/69C07C269/04C07C271/22C07C213/00C07C213/08C07C219/06C09K23/00
Inventor 任雁鹏郭胜利
Owner 杨凌单色生物科技有限公司
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