Azobisisobutyronitrile → Vinylphosphonic Acid Acrylamide

Participants

Reaction Conditions

Reaction Steps

In a 10 liter flask equipped with a stirrer, a capacitor, and a dropping device, 3,500 g of ethanol was charged and then heated to 70° C. After dissolving 231.1 g (2.14 mol) of a vinylphosphonic acid monomer, 1368.9 g (19.26 mol) of acrylamide, and 52 g of AIBN in 1,000 g of ethanol, this solution was added dropwise in a reactor over 4 hours. During dropwise addition of the monomer solution, a white precipitate was formed. While maintaining at 70° C., the monomer solution was heated and stirred for 2 hours, followed by stopping of heating and further cooling to room temperature. The precipitated white powder was separated by filtration, washed with 1,000 g of ethanol and then dried.

Provenance & Evidence