Cyclic quaternary ammonium salt gemini surfactant and preparation method thereof

A quaternary ammonium salt gemini and surfactant technology, applied in chemical instruments and methods, dissolution, organic chemistry, etc., can solve the problems of high cost, environmental pollution, health of operators, threats, etc., and achieve low pollution, solubility and Low biological toxicity and good surface activity
CN106512848AActive Publication Date: 2017-03-22WUHAN OXIRAN SPECIALTY CHEM CO
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
WUHAN OXIRAN SPECIALTY CHEM CO
Publication Date
2017-03-22

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Abstract

The invention discloses a cyclic quaternary ammonium salt gemini surfactant. The preparation method comprises: carrying out a substitution reaction by using 1-bromoalkane and piperidine as raw materials to obtain alkyl substituted piperidine; and carrying out a quaternization reaction on benzyl dihalide and the alkyl substituted piperidine to obtain the heterocyclic quaternary ammonium salt gemini surfactant. According to the present invention, the cyclic head group and the rigid linking chain group are concurrently introduced, such that the space volume is much larger than the linear chain alkyl chain structure, the maximum single molecule occupation area of the surfactant is significantly improved, and the surface adsorption function and the efficiency of the surfactant are improved; and the method has advantages of easily-available raw materials, simple preparation process, low pollution, high product yield, high product purity, and important practical application significance.
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Description

technical field

[0001] The invention belongs to the field of surfactants, in particular to a cyclic quaternary ammonium salt gemini surfactant and a preparation method thereof. Background technique

[0002] Gemini surfactants are a class of amphiphilic substances with two lipophilic groups and two hydrophilic groups. Compared with traditional single-chain surfactants, gemini surfactants are dimers obtained by linking two single-chain single-head group surfactants at or near the hydrophilic group through a spacer group . This special structure makes its properties more special, such as low critical micelle concentration, high surface activity, better wettability, better dispersibility, strong solubility and thickening ability, and is good with other surfactants. Synergistic effect and other excellent properties.

[0003] At present, most of the quaternary ammonium salt gemini surfactants are of alkyl head group and alkyl linking chain structure, and the different head grou...

Claims

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