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Amphoteric surfactant and preparation method and application thereof

A surfactant, amphoteric technology, applied in the field of amphoteric surfactant and its preparation, can solve the problems of poor foam suppression performance and emulsification performance, complicated preparation process and method, and achieve excellent foam suppression performance and emulsification performance. , Low production cost and good performance

Active Publication Date: 2021-12-07
SHANDONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Aiming at the problems of poor antifoaming performance and emulsifying performance of surfactants in the prior art, and complex preparation process and method, the invention discloses an amphoteric surfactant and a preparation method thereof, and the obtained amphoteric surfactant Good antifoaming performance and emulsifying performance, simple preparation process

Method used

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  • Amphoteric surfactant and preparation method and application thereof
  • Amphoteric surfactant and preparation method and application thereof
  • Amphoteric surfactant and preparation method and application thereof

Examples

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preparation example Construction

[0041] In one embodiment of the present invention, a preparation method of the above-mentioned amphoteric surfactant is provided, comprising the following steps:

[0042] 1) prepare reaction intermediate I, the structural formula of described reaction intermediate I is:

[0043] C 18 H 37 NH(CH 2 ) 3 NHCH 2 CH 2 CONHC(CH 3 ) 2 CH 2 SO 3 H;

[0044] 2) chloroacetic acid and sodium hydroxide are reacted to prepare sodium chloroacetate aqueous solution;

[0045] 3) Add the aqueous sodium chloroacetate solution dropwise to the reaction intermediate I, and mix and react to obtain an amphoteric surfactant.

[0046] In a specific embodiment, in step 1), the preparation of reaction intermediate I includes the following steps: N-hydrogenated tallow-1,3-propylenediamine, alcohol solvent and 2-acrylamide-2- Methylpropanesulfonic acid (abbreviated as AMPS) mixed reaction;

[0047] In a specific embodiment, in step 2), preparing an aqueous sodium chloroacetate solution include...

Embodiment 1

[0065] The present embodiment provides a preparation method of an amphoteric surfactant, comprising the following steps:

[0066] (1) Preparation of amphoteric surfactant:

[0067] 1) 326.0 g of N-hydrogenated tallow-1,3-propylene diamine and 500 g of isopropanol were added to the reactor, and the mixture was heated and stirred to dissolve. Then 215.6 g of AMPS was gradually added, and the reaction was stirred at 75° C. for 4 h to obtain the reaction intermediate I.

[0068] Above-mentioned synthetic product carries out FTIR detection after adopting ethyl acetate as solvent to carry out recrystallization separation and purification, and the results are as follows (see figure 1 ): 3439cm -1 (peak 1) is the stretching vibration peak of O-H in the sulfonic acid group, 3308 cm -1 (peak 2) is the N-H stretching vibration peak of secondary amide, 2924cm -1 (peak 3) is the asymmetric stretching vibration absorption peak of methylene, 2855cm -1 (peak4) is the peak of symmetrical ...

Embodiment 2

[0082] The present embodiment provides a preparation method of an amphoteric surfactant, comprising the following steps:

[0083] (1) Preparation of amphoteric surfactant:

[0084] 1) 326.0 g of N-hydrogenated tallow-1,3-propylene diamine and 500 g of isopropanol were added to the reactor, and the mixture was heated and stirred to dissolve. Then 215.6 g of AMPS was gradually added, and the reaction was stirred at 75° C. for 4 h to obtain the reaction intermediate I.

[0085] 2) Prepare aqueous sodium chloroacetate solution: dissolve 198.4 g of chloroacetic acid in 400 g of water to obtain an aqueous chloroacetic acid solution, dissolve 84.0 g of sodium hydroxide in 160 g of water to obtain an aqueous solution of sodium hydroxide, and gradually add the aqueous sodium hydroxide solution to the aqueous chloroacetic acid solution , and reacted at 25 °C for 10 min to obtain an aqueous solution of sodium chloroacetate.

[0086] 3) The aqueous sodium chloroacetate solution was grad...

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Abstract

The invention belongs to the technical field of fine chemical engineering, and relates to an amphoteric surfactant and a preparation method thereof, the molecular structure general formula of the amphoteric surfactant is shown in the specification, and the amphoteric surfactant is prepared from the following raw materials in molar ratio: N-hydrogenated tallow-based 1, 3-propylene diamine, an alcohol solvent, 2-acrylamide, 2-methylpropanesulfonic acid, chloroacetic acid and sodium hydroxide with the mole ratio of 1: 6.00-12.00: 1.00-1.05: 1.00-2.20: 1.00-2.20; the alcohol solvent is ethanol or isopropanol. The amphoteric surfactant has the advantages of easily available synthetic raw materials, low production cost and simple production process, and the foam inhibition performance and emulsifying performance of the amphoteric surfactant are superior to those of a surfactant OP-10.

Description

technical field [0001] The invention relates to the technical field of fine chemicals, in particular to an amphoteric surfactant and a preparation method and application thereof. Background technique [0002] The information disclosed in this Background section is only for enhancement of understanding of the general background of the invention and should not necessarily be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person of ordinary skill in the art. [0003] Surfactant is a substance that can drastically change the interfacial properties of its solution when added in a small amount. Surfactants are widely used in various industries as defoamers, foaming agents, solubilizers, wetting agents, detergents and emulsifiers. Surfactants can be divided into ionic and non-ionic types according to whether their hydrophilic groups are ionized in aqueous solutions, and ionic types can be further divided into cati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01F17/28B01F17/10B01F17/22C07C303/22C07C309/15C09K23/28C09K23/10C09K23/22
CPCC07C303/22C07C309/15
Inventor 施来顺马京秋季通侯文科陈雅雯
Owner SHANDONG UNIV
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