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 ternary hydrophobic association polymers and their synthesis, can solve the problems of large dynamic adsorption capacity, large filtration factor, poor resistance to high salt, etc., and achieve Simple synthetic process conditions, good solubility and stability, good temperature and salt resistance

Inactive Publication Date: 2006-06-28
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 th

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

Example Embodiment

[0041] Example 1 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-mouth round bottom equipped with a stirrer, thermometer, reflux condenser, dropping funnel and nitrogen inlet pipe In the alkane flask, add 22.1g (0.10mol) of nonylphenol, keep the temperature of the external bath at 50°C, drop 10mL (0.12mol) of a certain concentration of NaOH solution and 10mL of acetone, and purge with nitrogen. Stir until the solution is transparent, slowly drop in 20mL dissolved phase transfer catalyst (1.2×10 -2 mol) in water. The temperature was raised to 45°C, and 50 mL of organic solution containing 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. Cool down, replace the condenser tube with a distillation device,...

Example Embodiment

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

[0045] First, synthesize an intermolecular association type hydrophobic monomer (allyl-(4-isopropyl-3-methyl)phenyl ether): equipped with a stirrer, thermometer, reflux condenser, dropping funnel and nitrogen Put 15.1g (0.10mol) of p-isopropyl-m-cresol into the 250mL three-neck round-bottom alkane bottle into the tube, keep the temperature of the external bath at 40℃, drop 10mL (0.12mol) of a certain concentration of NaOH solution and 10mL of acetone. Nitrogen. Stir until the solution is transparent, slowly add 20mL dissolved phase transfer catalyst (1.0×10 -2 mol) in water. The temperature is raised to 45°C, and 50 mL of organic solution containing 0.10 mol of allyl chloride is added dropwise. After dropping, the temperature is raised to 50°C and reacted for 1 hour; the temperature is raised to 60°C and refluxed for 2 hours. Cool down, replace the condenser tube with a d...

Example Embodiment

[0047] Example 3 Rheological properties of intermolecular associative terpolymer

[0048] see Figure 5 , The apparent viscosity (Apparent Viscosity, abbreviated as AV) of the hydrolyzed polyacrylamide (HPAM) aqueous solution is approximately a straight line. The apparent viscosity increases with the increase of the polymer concentration, but the increase is not large, basically maintaining a linear increase . The apparent viscosity of the allyl-nonylphenyl ether / acrylamide / sodium acrylate aqueous solution prepared in Example 1 continues to increase with the increase of the polymer concentration, especially when the concentration exceeds a certain value (>2000mg / L ), its apparent viscosity rises sharply. It shows that the polymer has good viscosity increasing 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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IPC IPC(8): C08F220/56C08F216/12C08F220/06
Inventor 冯茹森郭拥军李爱辉薛新生
Owner SICHUAN GUANGYA POLYMER CHEM
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