Polymer with surface activity as well as preparation method and application of polymer

A surface active and polymer technology, applied in the polymer field, can solve the problems of poor temperature resistance and salt resistance of polymer surfactants, poor polymerization activity of polymer surfactants, and poor surface activity of copolymers. Effects of oil/water interfacial tension, fluidity-controlled oil/water interfacial tension, and good resistance to cationic precipitation

Active Publication Date: 2018-03-20
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In US4138381, US4463151 and EP426864, alkyl or alkylphenol polyoxyethylene ether acrylate surface-active monomers are copolymerized with acrylamide monomers, mainly utilizing the association of hydrophobic groups of surface-active monomers in water. Thereby, the viscosity of the copolymer is greatly increased, and the copolymer containing the surface active monomer component has better salt tolerance, but the amphiphilic macromonomer component is difficult to gather to the interface in the binary copolymer, therefore, The synthesized copolymer has poor surface activity
[0008] In CN1178802A, a terpolymer is obtained by copolymerizing acrylamide monomers, surface active macromonomers and ionic monomers. The copolymer has high viscosity but poor surface activity
Sun Lili and others from Southwest Petroleum Institute synthesized a new polymer surfactant (PS1) by homogeneous polymerization method. The polymer surfactant is a terpolymer of acrylamide, acrylic acid and methyl methacrylate. The ability of molecular surfactants to reduce surface tension is not as good as t

Method used

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  • Polymer with surface activity as well as preparation method and application of polymer
  • Polymer with surface activity as well as preparation method and application of polymer
  • Polymer with surface activity as well as preparation method and application of polymer

Examples

Experimental program
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Effect test

Embodiment 1

[0075] This example is used to illustrate the polymer with surface active function and its preparation method according to the present invention.

[0076] Adopt aqueous solution polymerization method, in the adiabatic polymerization reactor that has surface thermocouple, add 0.25g as the structural monomer GNR-1 shown in formula (13) (Nantong Hantai Chemical Co., Ltd.) as water-soluble surface active monomer, 19.75 g acrylamide, 5.0 g of 2-acrylamido-2-methylpropanesulfonic acid and distilled water, based on the total content of monomers and distilled water, the total content of monomers is 10% by weight, fully stirred into the polymerization reaction bottle The solution in the solution becomes a transparent solution. Then add 25 mg of auxiliary agent urea, 75 mg of disodium edetate, 1 mL of ammonia water and 10 mg of isopropanol, and at the same time adjust the pH value of the system to 6 with sodium hydroxide, and feed high-purity nitrogen with a volume concentration of 99.9...

Embodiment 2

[0080] This example is used to illustrate the polymer with surface active function and its preparation method according to the present invention.

[0081] Adopt aqueous solution polymerization method, in the adiabatic polymerization reactor that has surface thermocouple, add 0.1875g structural monomer GNR-1 (Nantong Hantai Chemical Co., Ltd.) as shown in formula (13) as water-soluble surface active monomer, 24.1875 g acrylamide, 13.125 g of 2-acrylamido-2-methylpropanesulfonic acid and distilled water, based on the total content of monomers and distilled water, the total content of monomers is 15% by weight, fully stirred into the polymerization reaction bottle The solution in the solution becomes a transparent solution. Then add 25 mg of auxiliary agent urea, 75 mg of disodium edetate, 1 mL of ammonia water and 10 mg of isopropanol, and at the same time adjust the pH value of the system to 7 with sodium hydroxide, and feed high-purity nitrogen with a volume concentration of 9...

Embodiment 3

[0085] This example is used to illustrate the polymer with surface active function and its preparation method according to the present invention.

[0086] Adopt aqueous solution polymerization method, in the adiabatic polymerization reactor that has surface thermocouple, add 0.25g as the structural monomer GNR-2 (Nantong Hantai Chemical Co., Ltd.) shown in formula (14) as water-soluble surface active monomer, 34.75g Acrylamide, 15g of 2-acrylamido-2-methylpropanesulfonic acid and distilled water, based on the total content of monomers and distilled water, the total content of monomers is 20% by weight, fully stirred to the The solution turned into a clear solution. Then add 50mg of auxiliary agent urea, 100mg of disodium ethylenediaminetetraacetic acid, 1mL of ammonia water and 5mg of N,N-methylenebisacrylamide, and at the same time adjust the pH value of the system to 8.0 with sodium hydroxide. High-purity nitrogen for 30 minutes to remove oxygen from the polymerization flas...

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Abstract

The invention relates to the field of polymers, and particularly discloses a polymer with surface activity as well as a preparation method and application of the polymer. The polymer comprises a structure unit A, a structure unit B and a structure unit C, wherein the structure unit A has a structure as shown in formula (1); the structure unit B has a structure as shown in formula (2); the structure unit C has a structure as shown in formula (3). The polymer with the surface activity is good in surface activity, capable of thickening aqueous medium and resistant to temperature and salinity. Theformulas are as shown in the description.

Description

technical field [0001] The present invention relates to the field of polymers, in particular to a polymer with surface active function, a method for preparing the polymer with surface active function, a polymer with surface active function prepared by the method, and the Application of polymers with surface active functions as oil displacement agents. Background technique [0002] In order to solve the problem of poor temperature resistance and salt resistance of polymers used for oil displacement, researchers proposed a method of introducing functional monomers into the molecules and increasing the molecular weight of polymers to improve the apparent viscosity and temperature resistance of polymer aqueous solutions. Salt performance, thus developed hydrophobic association polymers, comb polymers, temperature-resistant and salt-resistant polymers, etc., but these polymers do not have surface activity and oil washing ability. [0003] In the tertiary oil recovery technology,...

Claims

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Application Information

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IPC IPC(8): C08F220/56C08F220/58C08F226/02C09K8/584
CPCC08F220/56C09K8/584C08F220/585C08F226/02
Inventor 王晓春赵方园杨捷
Owner CHINA PETROLEUM & CHEM CORP
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