The method of producing high quality cationic acrylamide polymer

It provides a method for producing a high viscosity and high solubility of high molecular weight cationic acrylamide polymer. The method of the present invention is characterized by polymerizing at pH2~6 a monomer mixture comprising acrylamide and cationic monomers obtained by hydrating acrylonitrile by the catalytic action of nitrile hydratase.