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
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Embodiment 1
[0049] The preparation of the acrylamide water-soluble amphoteric polymer containing benzene ring modification, the steps are as follows:
[0050] (1) Weigh 3.36g (0.04735mol) of acrylamide and 0.6975g (0.0025mol) of methacryloyloxyethyl-N,N-dimethylpropanesulfonate amphoteric monomer and dissolve them in water. Nitrogen tube, condenser tube and a 100mL three-neck flask with a stirring magnet, stir at room temperature until completely dissolved;
[0051] (2) Add 0.0177g (0.15mmol) hydrophobic monomer methylstyrene and 1.44g (0.1mol.L) to the system obtained in step (1) -1 ) emulsifier sodium lauryl sulfate, feed nitrogen and fully stir at room temperature;
[0052] (3) Add 0.054g (4mmol.L) to the system obtained in step (2) -1 ) Initiator potassium persulfate, after being stirred evenly, placed in a constant temperature water bath at 25° C., and deoxygenated with nitrogen gas for 0.5 hour;
[0053](4) The system obtained in step (3) was reacted at 65°C for 6 hours to obtain...
Embodiment 2
[0060] The preparation of the acrylamide water-soluble amphoteric polymer containing benzene ring modification, the steps are as follows:
[0061] As described in Example 1, the difference is that the dosage of acrylamide in step (1) is 3.3548g (0.04725mol), and the dosage of hydrophobic monomer methylstyrene in step (2) is 0.0295g (0.25mmol).
[0062] 3.632 g of water-soluble polymer powder containing benzene ring modified acrylamide was obtained, with a yield of ≥89%.
Embodiment 3
[0064] The preparation of the acrylamide water-soluble amphoteric polymer containing benzene ring modification, the steps are as follows:
[0065] (1) Weigh 3.34765g (0.04715mol) of acrylamide and 0.6975g (0.0025mol) of methacryloyloxyethyl-N,N-dimethylpropanesulfonate amphoteric monomer and dissolve it in water. Nitrogen tube, condenser tube and a 100mL three-neck flask with a stirring magnet, stir at room temperature until completely dissolved;
[0066] (2) Add 0.04136g (0.35mmol) hydrophobic monomer methylstyrene and 1.44g (0.1mol.L) to the system obtained in step (1) -1 ) emulsifier sodium lauryl sulfate, feed nitrogen and fully stir at room temperature;
[0067] (3) Add 0.054g (4mmol.L) to the system obtained in step (2) -1 ) Initiator potassium persulfate, after being stirred evenly, placed in a constant temperature water bath at 25° C., and deoxygenated with nitrogen gas for 0.5 hour;
[0068] (4) The system obtained in step (3) was reacted at 70°C for 6 hours to obt...
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