Acrylic amide modified graft copolymer, preparation method and application thereof
A graft copolymer and acrylamide technology, applied in the field of acrylamide modified graft copolymer and its preparation, can solve the problems of easy plugging of pores and throats, large hydrodynamic radius of comb-shaped polymers, etc.
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Embodiment 1
[0036] 20.000 grams of acrylamide, 2.600 grams of 2-acrylamide-2-methylpropanesulfonic acid, 6.510 grams of allyl octylphenol polyoxyethylene ether (the adduct EO of polyoxyethylene ether is 20), 18 Dissolve 8.200 g of alkyl dimethyl allyl ammonium chloride in 320 ml of distilled water, add it to a three-necked reaction flask, adjust the pH of the solution to 4 with NaOH, and the reaction temperature is 65°C, and pass through N 2 After 30 minutes, add 8.20 mL of 0.05 mol / L potassium persulfate initiator solution, react for 32 hours, and dilute the polymer with water to obtain a PAB concentrated solution.
Embodiment 2
[0038] 20.000 grams of acrylamide, 17.310 grams of 2-acrylamido-2-tetradecylethanesulfonic acid, 11.400 grams of allyl octylphenol polyoxyethylene ether (the adduct EO of polyoxyethylene ether is 40), Dissolve 5.720 g of dodecyl dimethyl allyl ammonium chloride in 680 ml of distilled water, add it to a three-necked reaction flask, adjust the pH of the solution to 7 with NaOH, the reaction temperature is 75°C, and pass through N 2 After 30 minutes, add 14.00 mL of 0.05 mol / L potassium persulfate initiator solution, react for 36 hours, and dilute the polymer with water to obtain a PAB concentrated solution.
Embodiment 3
[0040] 20.000 grams of acrylamide, 5.120 grams of vinylbenzenesulfonic acid, 4.360 grams of 4-vinylbenzyl nonylphenol polyoxyethylene ether (EO is 10), dodecyldimethyl (4-vinylbenzyl) Dissolve 2.380 grams of ammonium chloride in 290 milliliters of deionized water, adjust the pH to 3.5 with NaOH, the reaction temperature is 55 ° C, and pass through N 2 After 30 minutes, add 3.08 mL of 0.05 mol / L ammonium persulfate initiator solution, and react for 12 hours. The polymer was dissolved in water to obtain a PAB concentrated solution.
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