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A kind of star polycation-based surfactant and its preparation method and application

A technology based on surfactants and polycations, which is applied in the field of star-shaped polycations-based surfactants and its preparation, can solve the problems of large formation damage, low anti-swelling rate, and large dosage, and achieve high-efficiency clay stabilizers and effects wide range of effects

Active Publication Date: 2020-12-22
KENTE CATALYSTS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing quaternary ammonium salt clay stabilizers have problems such as large dosage, low anti-swelling rate and great damage to the formation. The present invention redesigns the molecular structure of the quaternary ammonium salt clay stabilizers to synthesize a high-performance star Type multi-quaternary ammonium salt clay stabilizer

Method used

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  • A kind of star polycation-based surfactant and its preparation method and application
  • A kind of star polycation-based surfactant and its preparation method and application
  • A kind of star polycation-based surfactant and its preparation method and application

Examples

Experimental program
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Effect test

Embodiment 1

[0035] (1) Be that 80% dodecyl primary amine ethanol solution (34.69g, wherein contain dodecyl primary amine 27.75g, 0.15mol) and acidic catalyst (85%H 3 PO 4 , 0.50g), be warming up to 50 ℃, dropwise add the trimethylolpropane-three (3- aziridinyl propionate) ethanol solution (35.42g, containing trimethylolpropane- Tris(3-aziridinyl propionate) 21.25 g, 0.05 mol), and the dropping time is 40 min. After the dropwise addition was completed, the temperature was raised to 70° C. for 6 h.

[0036] (2) The above reaction solution was mixed with K 2 CO 3 Adjust to weakly alkaline (pH=9~10), under the protection of nitrogen, add dropwise a 60% mass fraction of methyl chloride ethanol solution (25.25g, which contains 15.15g of methyl chloride, 0.30mol), and react at 50°C for 10h ; After the reaction, the insoluble matter was removed, the reaction solution was concentrated, the product was purified by toluene column chromatography, and the product was vacuum-dried to constant weigh...

Embodiment 2

[0042] (1) Be that 80% octadecyl primary amine ethanol solution (50.53g, wherein contain octadecyl primary amine 40.43g, 0.15mol) and acidic catalyst (85%H 3 PO 4 , 0.60g), be warming up to 50 ℃, dropwise add trimethylolpropane-three (3- aziridinyl propionate) ethanol solution (35.42g, containing trimethylolpropane- Tris(3-aziridinyl propionate) 21.25 g, 0.05 mol), and the dropping time is 40 min. After the dropwise addition was completed, the temperature was raised to 50° C. for 8 h.

[0043] (2) The above reaction solution was mixed with K 2 CO 3 Adjust to weakly alkaline (pH = 9 ~ 10), under the protection of nitrogen, dropwise add benzyl chloride ethanol solution (47.48g, containing 37.98g, 0.30mol) of benzyl chloride with a mass fraction of 80%, at 70°C React for 16 hours; remove the insoluble matter after the reaction, concentrate the reaction solution, purify and isolate the product by toluene column chromatography, and vacuum dry to constant weight to obtain the prod...

Embodiment 3

[0049] (3) Be that 80% tetradecyl primary amine ethanol solution (40.03g, wherein contain tetradecyl primary amine 32.03g, 0.15mol) and acid catalyst (85%H 3 PO 4 , 0.50g), be warming up to 50 ℃, dropwise add the trimethylolpropane-three (3- aziridinyl propionate) ethanol solution (35.42g, containing trimethylolpropane- Tris(3-aziridinyl propionate) 21.25 g, 0.05 mol), and the dropping time is 40 min. After the dropwise addition was completed, the temperature was raised to 60° C. for 7 h.

[0050] (4) The above-mentioned reaction liquid was mixed with K 2 CO 3 Adjust to weakly alkaline (pH = 9 ~ 10), under the protection of nitrogen, dropwise add benzyl chloride ethanol solution (47.48g, containing 37.98g, 0.30mol) of benzyl chloride with a mass fraction of 80%, at 60°C React for 12 hours; remove the insoluble matter after the reaction, concentrate the reaction solution, purify and isolate the product by toluene column chromatography, and dry it in vacuum to constant weigh...

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Abstract

The invention discloses a star-shaped polycation-based surfactant as well as a preparation method and application thereof. The surfactant is prepared through the following steps: dropwise adding a certain amount of a trimethylol propane-tri(3-aziridinylpropanoate) reaction solution into a reaction flask filled with a long-chain fatty primary amine ethanol solution and an acidic catalyst, and carrying out first-step aziridine ring-opening reaction; then adding a certain amount of a chloromethane (or benzyl chloride) reaction solution into a reaction solution and carrying out second-step amination reaction, wherein the obtained product is the star-shaped polycation-based surfactant.

Description

technical field [0001] The invention relates to the technical field of preparation of polyquaternary ammonium salt cationic surfactants, in particular to a star-shaped polycation-based surfactant and its preparation method and application. Background technique [0002] Polycationic quaternary ammonium salt surfactants have higher surface / interface activity, lower critical micelle concentration, better bactericidal performance, and good Physicochemical properties such as foaming power, foam stability and unique rheology are widely used in the fields of preparing new materials, fungicides, inhibiting metal corrosion, fabric dyeing and finishing, and oil exploration. At present, the most widely studied polycationic quaternary ammonium surfactants are cationic gemini surfactants, but there is no star polycation-based surfactant to meet the existing needs. [0003] With the development of petroleum engineering technology, there are more and more drilling operations such as deep ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C229/16C07C227/04C07C227/18C09K8/035C09K8/506
CPCC07C227/04C07C227/18C07C229/16C09K8/035C09K8/506C09K2208/12
Inventor 王晨王霞辛燕杨晓武费贵强
Owner KENTE CATALYSTS INC
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