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A kind of branch skeleton monomer with 2,4-diacetyl-3-(4-bromophenyl)glutaric acid diethyl ester as the core and its preparation method and application

A technology of diethyl glutarate and diacetyl, which is applied in the field of dendritic skeleton monomers and its preparation, can solve the problems of limited salt resistance, shear resistance and temperature resistance, and achieve improved salt resistance and high resistance to molecular movement , The effect of small reduction in apparent viscosity

Inactive Publication Date: 2016-05-04
SOUTHWEST PETROLEUM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the main chains and branched chains of dendritic polymers currently used in oil fields are linear flexible chain structures, which have limited performance in improving salt resistance, shear resistance and temperature resistance.

Method used

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  • A kind of branch skeleton monomer with 2,4-diacetyl-3-(4-bromophenyl)glutaric acid diethyl ester as the core and its preparation method and application
  • A kind of branch skeleton monomer with 2,4-diacetyl-3-(4-bromophenyl)glutaric acid diethyl ester as the core and its preparation method and application
  • A kind of branch skeleton monomer with 2,4-diacetyl-3-(4-bromophenyl)glutaric acid diethyl ester as the core and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Embodiment 1: The preparation of rigid small molecule reaction core comprises the following steps:

[0044] Weigh 1 gram of 2,4-diacetyl-3-(4-bromophenyl) diethyl glutarate and dissolve it in 4.4 grams of ethylenediamine, wherein ethylenediamine is used both as a solvent and as a reactant, The molar ratio of 2,4-diacetyl-3-(4-bromophenyl)glutaric acid diethyl ester to ethylenediamine participating in the reaction is 1:2.5; avoid light and use a 2.5cm long rotor in an ice-water bath React on a magnetic stirrer for 24 to 25 hours. After the reaction is over, distill with a rotary evaporator, then add 15 grams of methanol, and rotate for several times to obtain a bright yellow solid, which is the reaction nucleus.

Embodiment 2

[0045] Embodiment 2: adopt the reaction core that embodiment 1 makes to carry out follow-up reaction, concrete steps are as follows:

[0046] Dissolve the bright yellow solid reaction nucleus with methanol as a solvent, add methyl acrylate dropwise with a constant pressure separatory funnel, and react with a magnetic stirrer at room temperature for 24 to 25 hours. pressure distillation, and add methanol for multiple rotary evaporation to obtain a yellow solid, i.e. the 0.5 generation product, wherein the molar ratio of the reaction nucleus to methyl acrylate is 1.5:3;

[0047] The obtained 0.5 generation product continues to be fully dissolved with methanol as a solvent, and ethylenediamine is added dropwise with a constant pressure separatory funnel, and reacted with a magnetic stirrer at room temperature for 24 to 25 hours. Distillation, and adding methanol for multiple rotary evaporation to obtain the 1st generation yellow solid product; wherein the molar ratio of the 0.5th...

Embodiment 3

[0054] Embodiment 3: adopt the reaction core that embodiment 1 makes to carry out follow-up reaction, concrete steps are as follows:

[0055] Dissolve the bright yellow solid reaction nucleus with methanol as a solvent, add methyl acrylate dropwise with a constant pressure separatory funnel, and react with a magnetic stirrer at room temperature for 24 to 25 hours. pressure distillation, and add methanol for multiple rotary evaporation to obtain a yellow solid, which is a 0.5-generation product, wherein the molar ratio of the reaction nucleus to methyl acrylate is 1:4.5;

[0056] The obtained 0.5 generation product continues to be fully dissolved with methanol as a solvent, and ethylenediamine is added dropwise with a constant pressure separatory funnel, and reacted with a magnetic stirrer at room temperature for 24 to 25 hours. Distillation, and adding methanol for multiple rotary evaporation to obtain the 1st generation yellow solid product, wherein the molar ratio of the 0.5...

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Abstract

The invention provides a resin framework monomer taking 2,4-diacetyl-3-(4-bromophenyl)ethyl glutarate as a core. The molecular formula of the resin framework monomer is as shown in a formula I. The invention further provides a preparation method of the resin framework monomer, and the method comprises the following steps: mixing 2,4-diacetyl-3-(4-bromophenyl)ethyl glutarate and aliphatic diamine for modification to generate a reaction core, and performing grafting on the reaction core alternately to generate a 0.5-genreation product, a 1-genreation product, 1.5-genreation product, 2-genreation product and a 2.5-genreation product in sequence and finally generate a 3-genreation product, namely the resin framework monomer, wherein methyl acrylate is adopted as a reactant in reaction processes of half-generation preparation, and aliphatic diamine is adopted as a reactant in reaction processes of whole-generation preparation. The resin framework monomer prepared by the invention has a rigid structural main chain and thus has favorable salt resistance and thermal stability, and the effect is improved when the resin framework monomer is applied in an oilfield oil displacement polymer.

Description

technical field [0001] The invention belongs to the field of polymer materials, and in particular relates to a dendritic skeleton monomer with 2,4-diacetyl-3-(4-bromophenyl)glutaric acid diethyl ester as the core, a preparation method and application thereof. Background technique [0002] Dendrimer is a new type of synthetic macromolecule that appeared in the mid-1980s. It has a highly geometrically symmetric structure, and at the same time has a large number of functional groups on the surface and a controllable internal cavity. It is a class of three-dimensional, A new type of polymer compound that can control and design the size, shape, structure and functional groups of molecules from the molecular level. Dendritic macromolecules have better monodispersity, non-crystallinity and solubility than traditional macromolecules, and due to less entanglement between molecules, the viscosity is extremely low, and a large number of reactive or functional groups can be introduced a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C231/02C07C237/10C08G83/00C09K8/588
Inventor 侯经洲施雷庭叶仲斌陈洪汪士凯刘尧波但松林
Owner SOUTHWEST PETROLEUM UNIV
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