Acrylamide monomer and acrylamide copolymer, method of preparation, application and oil displacement agent
An acrylamide copolymer and acrylamide copolymerization technology are applied in the application of acrylamide copolymer, acrylamide copolymer and its preparation method, and the field of oil displacing agent, which can solve the problems of poor temperature resistance and salt resistance, and achieve less curling. , Improve salt resistance, large volume effect
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Embodiment 1
[0092] This example is used to illustrate the acrylamide monomer and acrylamide copolymer provided by the present invention and the preparation method thereof.
[0093] (1) Preparation of acrylamide monomer
[0094] Add 98 kg of concentrated sulfuric acid to the reaction kettle, add 530 kg of acrylonitrile, cool the mixture to -5°C, stir well, add 70.14 kg of 3-methyl-2-butene, and keep the temperature of the reaction system below 5°C . Continue to stir the reaction for 2h, static, and crystals are precipitated. After filtering, washing, refining and drying, the pure monomer was obtained, and the product yield was 95.5%, and the acrylamide monomer M1 was obtained.
[0095] (2) Preparation of acrylamide copolymer
[0096] Add 927.09 kg of AM, 720.60 kg of acrylamide monomer M1, and 6590.76 kg of deionized water into the batching kettle. While stirring, control the temperature of the solution with frozen brine to -7°C, and add sodium hydroxide to adjust the pH to 7. Pump the...
Embodiment 2
[0100] This example is used to illustrate the acrylamide monomer and acrylamide copolymer provided by the present invention and the preparation method thereof.
[0101] (1) Preparation of acrylamide monomer
[0102] Add 117.6 kg of concentrated sulfuric acid into the reaction kettle, add 1060 kg of acrylonitrile, cool the mixture to 15°C, stir evenly, add 70.14 kg of 3-methyl-2-butene, and keep the temperature of the reaction system below 5°C. Continue to stir the reaction for 4h, static, and crystals are precipitated. After filtering, washing, refining and drying, the pure monomer was obtained, and the product yield was 96%, and the acrylamide monomer M2 was obtained.
[0103] (2) Preparation of acrylamide copolymer
[0104] Add 1108.85 kg of AM, 88.4 kg of acrylamide monomer M2, and 2793.5 kg of deionized water into the batching kettle. While stirring, control the temperature of the solution with frozen brine to 15°C, and add sodium hydroxide to adjust the pH to 5. Pump t...
Embodiment 3
[0106] This example is used to illustrate the acrylamide monomer and acrylamide copolymer provided by the present invention and the preparation method thereof.
[0107] (1) Preparation of acrylamide monomer
[0108] Add 107.8 kg of concentrated sulfuric acid into the reaction kettle, add 636 kg of acrylonitrile, cool the mixture to 5°C, stir evenly, add 70.14 kg of 3-methyl-2-butene, and keep the temperature of the reaction system below 5°C. Continue to stir the reaction for 3h, static, and crystals are precipitated. After filtering, washing, refining and drying, the pure monomer was obtained, and the product yield was 97%, and the acrylamide monomer M3 was obtained.
[0109] (2) Preparation of acrylamide copolymer
[0110] Add 1,080.4 kg of AM, 176.8 kg of temperature-resistant and salt-resistant monomer M3, and 3,771.6 kg of deionized water into the batching kettle. While stirring, use frozen brine to control the solution temperature at 0°C, and add sodium hydroxide to adj...
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