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A star-shaped polycation-based compound and its preparation method and application

A polycation and compound technology, applied in the field of star-shaped polycation-based compounds and their preparation, can solve the problems of low anti-swelling rate, large dosage, and large formation damage.

Active Publication Date: 2020-09-01
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 star-shaped polycation-based compound and its preparation method and application
  • A star-shaped polycation-based compound and its preparation method and application
  • A star-shaped polycation-based compound and its preparation method and application

Examples

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Effect test

Embodiment 1

[0036] (1) Be that 20% methylamine aqueous solution (23.25g, wherein contain methylamine 4.65g, 0.15mol) and acidic catalyst (85%H 3 PO 4 , 0.30g), warming up to 40 ° C, dropwise added a mass fraction of 70% trimethylolpropane-three (3- aziridinyl propionate) aqueous solution (35.42g, which contains trimethylolpropane-three (3-Aziridinyl propionate) 21.25 g, 0.05 mol), the dropping time is 40 min. After the dropwise addition, the temperature was raised to 70° C. for 5 h.

[0037] (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 weight to obtain th...

Embodiment 2

[0043] (1) It is 70% ethylamine aqueous solution (9.54g, wherein containing ethylamine 6.75g, 0.15mol) and acidic catalyst (85%H 3 PO 4, 0.30g), warming up to 50 ° C, dropwise adding a mass fraction of 70% trimethylolpropane-three (3- aziridinyl propionate) aqueous solution (35.42g, which contains trimethylolpropane-three (3-Aziridinyl propionate) 21.25 g, 0.05 mol), the dropping time is 40 min. After the dropwise addition was completed, the temperature was raised to 70° C. for 7 h.

[0044] (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...

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Abstract

The invention discloses a star-shaped polycation-based compound and its preparation method and application. The surfactant is prepared through the following steps: adding a certain amount of trihydroxyl Methylpropane-three (3-aziridinyl propionate) reaction liquid carries out the first step aziridine ring-opening reaction; Add quantitative methyl chloride (or benzyl chloride) reaction liquid to the reaction liquid again and carry out the second Step quaternization reaction, the resulting product is a star-shaped polycation-based compound.

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 compound 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-shaped polycation-based compound to meet the existing needs. [0003] With the development of petroleum engineering technology, there are more and more drilling operations such as de...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C229/16C07C227/18C09K8/68C09K8/74B01F17/18C09K23/18
CPCC09K8/602C09K8/68C09K8/74C07C229/16C09K2208/12C09K23/00
Inventor 王晨辛燕王霞杨通杨晓武费贵强
Owner KENTE CATALYSTS INC
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