A kind of star compound with dense charge and its preparation method

A compound and charge technology, applied in the preparation of organic compounds, the preparation of cyanide reactions, the composition of drilling holes, etc., can solve the problems of large formation damage, low anti-swelling rate, large dosage, etc. Metal corrosion, low dosage effect

Active Publication Date: 2020-12-25
SHAANXI UNIV OF SCI & TECH
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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.

Method used

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  • A kind of star compound with dense charge and its preparation method
  • A kind of star compound with dense charge and its preparation method
  • A kind of star compound with dense charge and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Be that 20% methylamine aqueous solution (23.25g, wherein containing methylamine 4.65g, 0.15mol) and acidic catalyst (85%H 3 PO 4 , 0.25g), 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 50°C for 7 hours; 2 CO 3 Adjust to weakly alkaline (pH=9~10), add dropwise 3-chloro-2-hydroxypropyl-trimethylammonium chloride aqueous solution (70.50g, containing 3-chloro-2- Hydroxypropyl-trimethylammonium chloride 56.40g, 0.30mol), dropwise time is 60min, and react at 50°C for 8h; after the reaction, remove insoluble matter, concentrate the reaction solution, and purify and isolate the product by toluene column chromatography , vacuum dried to constant weight to obtain the product.

[0035] The structural formula of em...

Embodiment 2

[0040] Be that 70% ethylamine aqueous solution (9.54g, wherein containing ethylamine 6.75g, 0.15mol) and acidic catalyst (85%H 3 PO 4 , 0.25g), warming up to 50 ° 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 hours; 2 CO 3 Adjust to weakly alkaline (pH=9~10), add dropwise 3-chloro-2-hydroxypropyl-trimethylammonium chloride aqueous solution (70.50g containing 3-chloro-2- Hydroxypropyl-trimethylammonium chloride 56.40g, 0.30mol), dropwise time is 60min, react at 70°C for 4h; after the reaction, remove the insoluble matter, concentrate the reaction solution, and use toluene column chromatography to purify and isolate the product , vacuum dried to constant weight to obtain the product.

[0041] The structural formula of em...

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PUM

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Abstract

The invention discloses a star compound carrying intensive charge and a preparation method thereof. The star compound is prepared according to the following steps: dropwise adding a certain amount oftrimethylolpropane-tris(3-aziridinyl propionate) reaction liquid into a reaction flask filled with a methylamine (or ethylamine) aqueous solution and an acid catalyst, so as to perform a first step ofan aziridine ring-opening reaction; then adding a certain amount of 3-chlorine-2-hydroxypropyl-trimethyl ammonium chloride into the reaction liquid, so as to perform a second step of a quarter of amination reaction. An obtained product is the star compound carrying the intensive charge.

Description

technical field [0001] The invention relates to the technical field of preparation of polyquaternary ammonium salt cationic surfactants, in particular to a star compound with dense charge and a preparation method thereof. Background technique [0002] The aziridine ring structure in the aziridine cross-linking agent has a large tension and high activity, and can react with amine groups, carboxyl groups and hydroxyl groups to form compounds with a star structure or network structure. How to prepare such compounds The introduction of polycationic quaternary ammonium salt groups in the preparation of new compounds used in oil and gas extraction is the difficulty of current research. [0003] There are clay minerals such as montmorillonite, kaolin, and chlorite in oil and gas reservoirs. When they come into contact with incompatible foreign fluids, they will hydrate, expand, disperse and migrate to block the channels of oil and gas reservoirs. The use of clay stabilizers can Pr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C229/16C07C227/18C09K8/035C09K8/68C09K8/584C09K8/74
CPCC07C227/18C07C229/16C09K8/035C09K8/584C09K8/68C09K8/74C09K2208/12
Inventor 王晨杨通辛燕王霞杨晓武费贵强
Owner SHAANXI UNIV OF SCI & TECH
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