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Hydrophobically associating polymer and preparation method thereof

A hydrophobic association and polymer technology, applied in the field of polymers, can solve the problems of complex conditions and difficult control of the preparation method of hydrophobic association polymers

Inactive Publication Date: 2016-04-13
SICHUAN GUANGYA POLYMER CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the preparation methods of existing hydrophobically associated polymers have complicated conditions and are not easy to control.

Method used

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  • Hydrophobically associating polymer and preparation method thereof
  • Hydrophobically associating polymer and preparation method thereof
  • Hydrophobically associating polymer and preparation method thereof

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preparation example Construction

[0044] The present invention also provides a method for preparing the above-mentioned hydrophobic association polymer, comprising: dissolving the acrylamide monomer in water to obtain a water phase; dissolving the hydrophobic monomer in an organic solvent to obtain an oil phase; Under the action, the water phase is mixed with the oil phase, and heated for polymerization to obtain a hydrophobic association polymer; the hydrophobic monomer is selected from N-alkyl substituted acrylamide, alkyl acrylate, methacrylic acid One or more of alkyl esters, fluorine-substituted alkyl acrylates, fluorine-substituted alkyl methacrylates, allyl alkyl quaternary ammonium salts, acrylamide alkyl sulfonic acids and their sulfonates; The number of carbon atoms in the alkyl group in the N-alkyl substituted acrylamide, alkyl acrylate, alkyl methacrylate, fluorine-substituted alkyl acrylate, and fluorine-substituted alkyl methacrylate is greater than or equal to 4; The number of carbon atoms of th...

Embodiment 1～5

[0061] The synthesis conditions such as the types of monomers and initiators, their feed ratios, and reaction temperatures are shown in Table 1. Initiator in table 1 is PSD structure as shown in formula (VI), and concentration is the mass fraction that accounts for total monomer concentration, and functional monomer is 2-acrylamide-2-sodium methyl propane sulfonate, and hydrophobic monomer is acrylic acid octadecyl esters.

[0062] Weigh a certain amount of deionized water into a 5000ml beaker, add the acrylamide monomer, sodium acrylate monomer and functional monomer in Table 1 into the deionized water, fully dissolve to obtain the water phase; dissolve the hydrophobic monomer in n-decane to obtain the oil phase; mix the water phase with the oil phase, keep the temperature at 30°C, add an initiator to initiate the polymerization reaction, the polymerization reaction is carried out in an adiabatic environment, insert a thermometer in the center of the reaction system to monito...

Embodiment 6～10

[0070] The synthesis conditions such as the types, feed ratios, and reaction temperatures of each monomer and initiator are shown in Table 2. Initiator in table 2 is PSD structure as shown in formula (VI), and concentration is the mass fraction that accounts for total monomer concentration, and functional monomer is 2-acrylamide-2-sodium methyl propane sulfonate, and hydrophobic monomer is acrylic acid octadecyl esters.

[0071] Weigh a certain amount of deionized water into a 5000ml beaker, add the acrylamide monomer, sodium acrylate monomer and functional monomer in Table 2 into the deionized water, fully dissolve to obtain the water phase; dissolve the hydrophobic monomer in n-decane to obtain the oil phase; mix the water phase with the oil phase, keep the temperature to the initiation temperature, add the initiator to initiate the polymerization reaction, the polymerization reaction is carried out in an adiabatic environment, insert a thermometer in the center of the react...

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Abstract

The invention provides a hydrophobically associating polymer and a preparation method thereof. The preparation method comprises the following steps: dissolving acrylamide monomers in water to obtain a water phase; dissolving hydrophobic monomers in an organic solvent to obtain an oil phase; mixing the water phase with the oil phase under the action of an initiator and heating the mixture to carry out polymerization reaction, thus obtaining the hydrophobically associating polymer. Compared with the prior art, the hydrophobically associating polymer has the beneficial effects that monomer units of acrylamide in the hydrophobically associating polymer can provide hydrophilic groups for the hydrophobic association complex, thus ensuring that the polymer has good water solubility; monomer units of the hydrophobic monomers can provide hydrophobic side groups for the hydrophobically associating polymer; hydrophobic association is formed among the hydrophobic side groups in water to form a spatial network structure, thus providing necessary viscoelasticity for a solution; the initiator shown in a formula (V) is an amphiphilic bifunctional initiator and can initiate homopolymerization of the water-soluble monomers and the oil-soluble monomers in respective phases, thus obtaining the hydrophobically associating polymer. The preparation method is simple and is mild in reaction conditions and higher in yield.

Description

technical field [0001] The invention belongs to the technical field of polymers, in particular to a hydrophobic association polymer and a preparation method thereof. Background technique [0002] In oilfield development and application technology, it is usually necessary to modify the formation environment, etc., and it is necessary to use certain performance fluids for mass transfer and transportation. By injecting these fluids into the formation, certain substances will be brought into the formation to act to transform the formation environment. To achieve the purpose of oil and gas field development and increase production. At the same time, related application technologies also require these fluids to have certain specific properties, such as thickening, viscoelasticity, drag reduction, permeability, and improved mobility ratio. Among them, the most commonly used fluid is aqueous solution, which has the advantages of wide source, economy, and convenient construction. By...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/56C08F220/58C08F220/06C08F220/18
CPCC08F220/56C08F220/585C08F220/06C08F220/1818
Inventor 郭拥军李华兵冯春辉蔡术威毛慧斐
Owner SICHUAN GUANGYA POLYMER CHEM
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