Benzene-ring-containing modified acrylamide water-soluble amphoteric polymer and preparation method thereof

A technology of amphoteric polymer and acrylamide, which is applied in the field of water-soluble polymer synthesis to achieve the effect of improving temperature resistance, wide application potential and reducing surface tension

Inactive Publication Date: 2014-10-08
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the above method does not involve modifying polyacrylamide

Method used

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  • Benzene-ring-containing modified acrylamide water-soluble amphoteric polymer and preparation method thereof
  • Benzene-ring-containing modified acrylamide water-soluble amphoteric polymer and preparation method thereof
  • Benzene-ring-containing modified acrylamide water-soluble amphoteric polymer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0048] Example 1.

[0049] The preparation of benzene ring-modified water-soluble amphoteric polymer of acrylamide is as follows:

[0050] (1) Weigh 3.36g (0.04735mol) of acrylamide and 0.6975g (0.0025mol) of methacryloxyethyl-N,N-dimethylpropanesulfonate amphoteric monomer and dissolve it in water. Nitrogen tube, condenser tube and 100mL three-necked flask with stirring magnet, stir at room temperature until completely dissolved;

[0051] (2) Add 0.0177g (0.15mmol) hydrophobic monomer methyl styrene and 1.44g (0.1mol.L) to the system obtained in step (1) -1 ) Sodium lauryl sulfate as an emulsifier, and nitrogen gas at room temperature and fully stirred;

[0052] (3) Add 0.054g (4mmol.L) to the system obtained in step (2) -1 ) Potassium persulfate as the initiator, stir well and place it in a constant temperature water bath at 25°C, and deoxidize with nitrogen for 0.5 hours;

[0053] (4) The system obtained in step (3) was reacted at 65°C for 6 hours to obtain a milky white uniform muc...

Example Embodiment

[0059] Example 2.

[0060] The preparation of benzene ring-modified water-soluble amphoteric polymer of acrylamide is as follows:

[0061] As described in Example 1, the difference is that the feeding amount of acrylamide in step (1) is 3.3548 g (0.04725 mol), and the feeding amount of hydrophobic monomer methyl styrene in step (2) is 0.0295 g (0.25 mmol).

[0062] 3.632 g of benzene ring-modified water-soluble polymer powder of acrylamide is obtained, and the yield is ≥89%.

Example Embodiment

[0063] Example 3.

[0064] The preparation of benzene ring-modified water-soluble amphoteric polymer of acrylamide is as follows:

[0065] (1) Weigh 3.34765g (0.04715mol) of acrylamide and 0.6975g (0.0025mol) methacryloyloxyethyl-N,N-dimethylpropanesulfonate amphoteric monomer and dissolve it in water. Nitrogen tube, condenser tube and 100mL three-necked flask with stirring magnet, stir at room temperature until completely dissolved;

[0066] (2) Add 0.04136g (0.35mmol) hydrophobic monomer methyl styrene and 1.44g (0.1mol.L) to the system obtained in step (1) -1 ) Sodium lauryl sulfate as an emulsifier, and nitrogen gas at room temperature and fully stirred;

[0067] (3) Add 0.054g (4mmol.L) to the system obtained in step (2) -1 ) Potassium persulfate as the initiator, stir well and place it in a constant temperature water bath at 25°C, and deoxidize with nitrogen for 0.5 hours;

[0068] (4) The system obtained in step (3) was reacted at 70°C for 6 hours to obtain a milky white uniform...

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Abstract

The invention relates to a benzene-ring-containing modified acrylamide water-soluble amphoteric polymer and a preparation method thereof. Amphoteric monomer methylacryloyloxyethyl-N,N-dimethylpropyl sulfonate (DMAPS), hydrophobic monomer methyl styrene (alpha-MST) and acrylamide (AM) are copolymerized in a lauryl sodium sulfate (SDS) emulsion by using potassium persulfate (KPS) as an initiator. Due to the introduction of the benzene ring structure comprising large steric hindrance, the water-soluble hydrophobic association polymer prepared by the method has the advantages of excellent hydrophobic associativity, excellent surface activity and excellent temperature/salt/shear resistance, can be used as a high molecular surfactant, and has wide application potential in the fields of oil-gas exploitation, paints, medicine and the like.

Description

technical field [0001] The invention relates to a benzene ring-modified acrylamide water-soluble polymer and a preparation method thereof, belonging to the technical field of water-soluble polymer synthesis. Background technique [0002] Polyacrylamide (PAM) is a water-soluble polymer that is widely used in oil fields. However, polyacrylamide and partially hydrolyzed polyacrylamide (HPAM) aqueous solution also have some defects in application, such as poor mechanical shear stability, easy to degrade when placed for a long time or at a higher temperature; the carboxyl group of partially hydrolyzed polyacrylamide Can react with divalent ions, etc. Therefore, the synthesis of temperature-resistant and salt-resistant copolymers is the main development trend of polyacrylamide polymers. Among them, the hydrophobic association polymer (HAWP) can form a three-dimensional reversible network structure through hydrophobic association in aqueous solution. This structure is less affect...

Claims

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Application Information

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IPC IPC(8): C08F220/56C08F220/36C08F212/12
Inventor 谭业邦王晓藜王鑫
Owner SHANDONG UNIV
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