Nitto Kagaku Kogyo Kabushiki Kaisha

Masahide Ozaki

Kenzo Ariyama

Iwao Ohshima

Yasuo Ogawa

Seiichi Chiba

Process for purifying an acrylamide including the steps of (1) adding an inorganic base (excluding ammonia) to an aqueous solution containing 15 to 60% by weight of the acrylamide at a temperature of up to 60.degree.C in an amount of 0.1 to 1.5 wt. % based on the acrylamide and (2) blowing a gas, inert to the acrylamide, into the resulting mixture at a hydrogen ion concentration of a pH of 12 to 13.7 and if necessary, (3) subjecting the so treated acrylamide solution to an active carbon adsorption treatment.

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Yokohama, Japan

Masahide Ozaki