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Water-solubility molecule associatad three-construction units hydrophobic associated polymer and synthesizing process thereof

A hydrophobic association and intermolecular technology, applied in the field of intermolecular association type ternary hydrophobic association polymer and its synthesis, can solve the problems of large filtration factor, large dynamic adsorption capacity, poor resistance to high salt, etc. The effect of good solubility and stability, simple synthesis process conditions, good temperature resistance and salt resistance

Inactive Publication Date: 2008-06-04
SICHUAN GUANGYA POLYMER CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] Hydrophobic association polymers have high-efficiency viscosity-increasing properties through the formation of supramolecular structures, which have been generally recognized by researchers in the field of polymer chemistry, but their solubility varies greatly. bad sex
[0012] (2) Problems of high temperature resistance, high salt resistance and poor long-term stability caused by intramolecular chain association
[0014] (3) Injectability of hydrophobically associated polymer solutions
[0015] During the laboratory research on the hydrophobic association polymer solution, it was found that there are phenomena such as large filtration factor, high injection pressure, poor pressure transmission in the long core, and no viscosity of the solution after passing through the core (the effect of series cores is not good).
[0016] (4) The stability of hydrophobically associated polymers in sewage
The root cause of problems such as high temperature resistance, high salt resistance, and poor long-term stability caused by intramolecular chain associations lies in the presence of intramolecular chain associations in the solution. The dynamic balance of the association between molecular chains, while the temperature rises and the salinity increases, long-term stirring is conducive to the balance shifting to the left, that is, it is beneficial to the association within the molecular chain, resulting in poor high temperature resistance, high salt resistance and long-term stability Poor performance and large dynamic adsorption capacity

Method used

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  • Water-solubility molecule associatad three-construction units hydrophobic associated polymer and synthesizing process thereof
  • Water-solubility molecule associatad three-construction units hydrophobic associated polymer and synthesizing process thereof
  • Water-solubility molecule associatad three-construction units hydrophobic associated polymer and synthesizing process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Embodiment 1 The synthesis of allyl-nonylphenyl ether / acrylamide / sodium acrylate terpolymer

[0042] First synthesize the intermolecular associative hydrophobic monomer (allyl-(p-nonyl)phenyl ether): in a 250mL three-port round bottom equipped with a stirrer, a thermometer, a reflux condenser, a dropping funnel, and a nitrogen inlet tube Add 22.1 g (0.10 mol) of nonylphenol to the alkane bottle, keep the external bath temperature at 50°C, add a certain concentration of NaOH solution 10 mL (0.12 mol) and acetone 10 mL dropwise, and blow nitrogen. Stir until the solution is transparent, slowly drop into 20mL dissolved phase transfer catalyst (1.2×10 -2 mol) in aqueous solution. The temperature was raised to 45°C, and 50 mL of organic solution dissolved with allyl chloride (0.10 mol) was added dropwise. After dropping, the temperature was raised to 60°C, and reacted for 1 hour; the temperature was raised to 65°C, and refluxed for 4 hours. Lower the temperature, replace t...

Embodiment 2

[0044] The synthesis of embodiment 2 allyl-(4-isopropyl-3-methyl) phenyl ether / acrylamide / sodium acrylate terpolymer

[0045] Synthesize the intermolecular associative hydrophobic monomer (allyl-(4-isopropyl-3-methyl)phenyl ether) at first: in the room equipped with stirrer, thermometer, reflux condenser, dropping funnel and nitrogen ventilation Add 15.1 g (0.10 mol) of p-isopropyl-m-cresol into a 250 mL three-necked circular bottom alkane bottle, keep the temperature of the external bath at 40°C, add 10 mL (0.12 mol) of a certain concentration of NaOH solution and 10 mL of acetone dropwise, and pass nitrogen. Stir until the solution is transparent, slowly drop into 20mL dissolved phase transfer catalyst (1.0×10 -2 mol) in aqueous solution. Raise the temperature to 45°C, add dropwise 50mL organic solution dissolved with 0.10mol of allyl chloride, after the drop is complete, raise the temperature to 50°C, and react for 1 hour; raise the temperature to 60°C, and reflux for 2 h...

Embodiment 3

[0047] The rheology of embodiment 3 intermolecular association type terpolymers

[0048] See Figure 5 , the apparent viscosity (Apparent Viscosity, abbreviated as AV)-concentration relationship of hydrolyzed polyacrylamide (HPAM) aqueous solution is approximately a straight line, and the apparent viscosity increases with the increase of polymer concentration, but the increase is not large, and basically maintains a linear increase . The apparent viscosity of the allyl-nonylphenyl ether / acrylamide / sodium acrylate aqueous solution prepared in Example 1 continued to increase with the increase of the polymer concentration, especially when the concentration exceeded a certain value (>2000mg / L ), the apparent viscosity increases sharply. It shows that the polymer has better viscosity-increasing property in aqueous solution.

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Abstract

The invention relates to a compounding method to form water solubility intermolecular association ternary hydrophobic association polymer that includes acrylamide, sodium acrylate, and allyl-alkylphenyl aether three constructions. The method includes the following steps: using acetone as reacting solvent, alkylphenols and allyl chloride as raw material, benzyl triethyl ammonium chloride as phase-transfer catalyst, reacting for 4-8 hours at 40-60 degree centigrade to form drainage monomer allyl-alkylphenyl aether; adding sodium acrylate, acrylamide and allyl-alkylphenyl aether monomer into reactor according to the mol ratio as 20-30:69.2-79.2:0.8, adding inducing agent, sealing reacting for 2-6 hours to gain terpolymer. The terpolymer has good temperature resistance, saline tolerance, dissolubility and high temperature stability. The invention is easy to compound and has mild condition.

Description

Technical field [0001] The invention relates to an intermolecular association type ternary hydrophobic association polymer and a synthesis method thereof. Background technique [0002] Water-soluble polymers ("Water-Soluble Polymers", Yan Ruixuan, Chemical Industry Press, 1999.6) can effectively increase the viscosity of aqueous solutions. Commonly used polymer products include polyacrylamide and biopolymers and their derivatives, such as partially hydrolyzed polyacrylamide (HPAM), copolymers of acrylamide and sodium acrylate, biopolymers (xanthan gum), cellulose ether compounds , polyvinylpyrrolidone, etc. HPAM has been widely used in polymer flooding in my country and achieved good results. However, HPAM products have poor shear stability and poor temperature and salt resistance. Xanthan gum has excellent salt resistance and shear resistance, but poor injectability and temperature resistance, and is expensive. Both HPAM and xanthan gum are difficult to meet the needs o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F220/56C08F220/06C08F216/12
Inventor 冯茹森郭拥军李爱辉薛新生
Owner SICHUAN GUANGYA POLYMER CHEM
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