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A kind of carboxylic acid sulfonic acid type surfactant and its preparation method and application

A surfactant, carboxylic acid sulfonic acid technology, applied in the preparation of sulfonic acid, chemical instruments and methods, transportation and packaging, etc. Low production cost, excellent foam suppression and emulsifying properties, and good performance

Active Publication Date: 2022-02-08
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the problems that the surfactants in the prior art still have poor antifoaming performance and emulsifying performance, and the preparation process and method are complicated, the invention discloses a carboxylic acid sulfonic acid type surfactant and a preparation method thereof. Acid sulfonic acid type surfactant has good antifoaming performance and emulsifying performance, and the preparation process is simple

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  • A kind of carboxylic acid sulfonic acid type surfactant and its preparation method and application
  • A kind of carboxylic acid sulfonic acid type surfactant and its preparation method and application
  • A kind of carboxylic acid sulfonic acid type surfactant and its preparation method and application

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preparation example Construction

[0037] In one embodiment of the present invention, a kind of preparation method of above-mentioned carboxylic acid sulfonic acid type surfactant is provided, comprises the steps:

[0038] 1) Mix and react N-hydrogenated tallow-1,3-propylenediamine, alcohol solvent and 2-acrylamide-2-methylpropanesulfonic acid (abbreviated as AMPS) to obtain reaction intermediate I, the The structural formula of reaction intermediate I is:

[0039] C 18 h 37 NH(CH 2 ) 3 NHCH 2 CH 2 CONHC (CH 3 ) 2 CH 2 SO 3 H;

[0040] 2) Add acrylic acid dropwise to the reaction intermediate I, mix and react to obtain a carboxylic acid sulfonic acid surfactant.

[0041] In a specific embodiment, the molar ratio of N-hydrogenated tallow-1,3-propylenediamine, alcohol solvent, 2-acrylamide-2-methylpropanesulfonic acid, and acrylic acid is 1: 7.00-13.00: 1.00-1.05: 1.00-2.20.

[0042] Through a large number of experimental verification and analysis, each raw material of above-mentioned molar ratio mak...

Embodiment 1

[0055] The present embodiment provides a kind of preparation method of carboxylic acid sulfonic acid type surfactant, comprises the steps:

[0056] (1) Preparation of carboxylic acid sulfonic acid type surfactant:

[0057] 1) Add 326.0g of N-hydrogenated tallow-1,3-propylenediamine and 500g of isopropanol into the reactor, heat and stir to dissolve. Then 215.6g AMPS was gradually added, and the reaction was stirred at 75°C for 4h to obtain reaction intermediate I.

[0058] The above-mentioned synthetic intermediates were evaporated to remove the solvent, and then separated and purified by recrystallization using ethyl acetate as a solvent for three times, and then analyzed and detected by FTIR, NMR and mass spectrometry.

[0059] FTIR analysis (see figure 1 ): 3439cm -1 (peak 1) is the stretching vibration peak of O-H in the sulfonic acid group, 3308cm -1 (peak

[0060] 2) N-H stretching vibration peak of secondary amide, 2924cm -1 (peak 3) is the asymmetric stretching v...

Embodiment 2

[0073] The present embodiment provides a kind of preparation method of carboxylic acid sulfonic acid type surfactant, comprises the steps:

[0074] (1) Preparation of carboxylic acid sulfonic acid type surfactant:

[0075] 1) Add 326.0g of N-hydrogenated tallow-1,3-propylenediamine and 500g of isopropanol into the reactor, heat and stir to dissolve. Then 215.6g AMPS was gradually added, and the reaction was stirred at 75°C for 4h to obtain reaction intermediate I.

[0076] 2) Gradually add 146.3 g of acrylic acid to the reaction intermediate I, and stir the reaction at 75° C. for 3 h. That is, a carboxylic acid sulfonic acid type surfactant is obtained. Reserved for anti-foaming and emulsifying performance tests.

[0077] The above synthesized product was evaporated to remove the solvent, and then recrystallized, separated and purified three times using petroleum ether as a solvent, and then analyzed and detected by FTIR, NMR and mass spectrometry.

[0078] FTIR analysis (...

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Abstract

The invention belongs to the technical field of fine chemicals, and relates to a carboxylic acid sulfonic acid type surfactant and a preparation method thereof. The molecular structural formula of the carboxylic acid sulfonic acid type surfactant is: or the carboxylic acid sulfonic acid type surfactant is composed of the following Prepared from raw materials with molar ratio: N‑hydrogenated tallow‑1,3‑propylenediamine, alcohol solvent, 2‑acrylamide‑2‑methylpropanesulfonic acid, acrylic acid in a molar ratio of 1:7.00‑ 13.00: 1.00‑1.05: 1.00‑2.20. The alcoholic solvent is ethanol or isopropanol. The synthesis raw material of the carboxylic acid sulfonic acid type surfactant of the present invention is easy to obtain, the production cost is low, the production process is simple, and its antifoam performance and emulsification performance are superior to the surfactant OP-10.

Description

technical field [0001] The invention relates to the technical field of fine chemicals, in particular to a carboxylic acid sulfonic acid type surfactant and a preparation method and application thereof. Background technique [0002] The information disclosed in this background section is only intended to increase the understanding of the general background of the present invention, and is not necessarily taken as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. [0003] Surfactants have a series of physical and chemical effects such as wetting or anti-adhesive, emulsification or demulsification, foaming or defoaming, solubilization, dispersion, washing, anti-corrosion, anti-static and corresponding practical applications, and become a flexible and diverse class. , Wide range of fine chemical products. [0004] For example, there is research related to a synthetic method of heavy oil sulfonat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K23/24C07C303/22C07C309/15C08J3/03C08L95/00
CPCC07C303/22C07C309/15C08J3/03C08J2395/00C09K23/00
Inventor 施来顺季通谈晓慧范仕尧吴昊马京秋陈雅雯
Owner SHANDONG UNIV
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