A kind of synthetic method for the low molecular weight cationic polymer of template polymerization
A cationic polymer, low molecular weight technology, applied in the field of synthesis of low molecular weight cationic polymers, to achieve the effect of moderate reaction temperature, less side reactions, and easy dissolution
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Embodiment 1
[0024] Low molecular weight cationic polymers were prepared in the following manner:
[0025] 1) Add a certain amount of DAC into ultrapure water, and after it is completely dissolved, make a 10% DAC aqueous solution for later use;
[0026] 2) Put 0.5% AIBN (azobisisobutyronitrile) initiator, 0.5% sodium formate chain transfer agent, and 0.4% p-hydroxyanisole inhibitor in sequence (first AIBN, then sodium formate, and finally p-hydroxybenzene methyl ether) into the aqueous solution, and stirred at room temperature, dissolved, mixed evenly, and then a mixed aqueous solution was obtained for subsequent use;
[0027] 3) Flow nitrogen into the reactor where the mixed aqueous solution is placed to drive oxygen for more than 30 minutes:
[0028] 4) The reactor was placed in a constant temperature water bath at 80°C for 4 h, then left to cool and mature at room temperature for 4 h, and then the product was purified with acetone, washed with absolute ethanol, and vacuum-dried to obta...
Embodiment 2
[0030] Low molecular weight cationic polymers were prepared in the following manner:
[0031] 1) Add a certain amount of DAC into ultrapure water, and after it is completely dissolved, make a 15% DAC aqueous solution for later use;
[0032] 2) Put 0.8% AIBN (azobisisobutyronitrile) initiator, 0.8% sodium formate chain transfer agent, and 0.5% p-hydroxyanisole polymerization inhibitor in sequence (first AIBN, then sodium formate, and finally p-hydroxybenzene methyl ether) into the aqueous solution, and stirred at room temperature, dissolved, mixed evenly, and then a mixed aqueous solution was obtained for subsequent use;
[0033] 3) Flow nitrogen into the reactor where the mixed aqueous solution is placed to drive oxygen for more than 30 minutes:
[0034] 4) The reactor was placed in a constant temperature water bath at 80°C for 4 h, then left to cool and mature at room temperature for 5 h, and then the product was purified with acetone, washed with absolute ethanol, and vacuu...
Embodiment 3
[0036] Low molecular weight cationic polymers were prepared in the following manner:
[0037] 1) Add a certain amount of DAC into ultrapure water, and after it is completely dissolved, make a 20% DAC aqueous solution for later use;
[0038] 2) Put 1.2% AIBN (azobisisobutyronitrile) initiator, 1.0% sodium formate chain transfer agent, and 0.7% p-hydroxyanisole inhibitor in sequence (first AIBN, then sodium formate, and finally p-hydroxybenzene methyl ether) into the aqueous solution, and stirred at room temperature, dissolved, mixed evenly, and then a mixed aqueous solution was obtained for subsequent use;
[0039] 3) Flow nitrogen into the reactor where the mixed aqueous solution is placed to drive oxygen for more than 30 minutes:
[0040] 4) The reactor was placed in a constant temperature water bath at 90°C for 3 hours, then left to cool and mature at room temperature for 4 hours, and then the product was purified with acetone, washed with absolute ethanol, and vacuum-dried...
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