Toyo Soda Manufacturing Co., Ltd.

Hanzo Tamabayashi

Keiichi Kihara

Tatsuo Hattori

Kanzi Katsuragawa

Yasuhiro Oda

Tetsuo Tanaka

Isao Ono

Ammonium p-styrenesulfonate is produced in a process which comprises reacting an amine having more than 7 carbon atoms and a mineral acid with an alkali metal p-styrenesulfonate in an aqueous media to produce an amine salt of p-styrenesulfonic acid and then reacting ammonia with said amine salt.

Process for producing ammonium p-styrenesulfonate

An alkali metal styrenesulfonate is produced by extracting from an aqueous solution by contacting an aqueous solution containing an alkali metal halide and an alkali metal styrenesulfonate with an organic solvent containing a protonic acid salt of an amine of more than 7 carbon atoms as the extracting reagent, and then back-extracting the styrenesulfonic acid anions with an aqueous solution of an alkali metal hydroxide.

Process for producing alkali metal styrenesulfonate

A process for producing an ammonium p-styrenesulfonate or polymer thereof which comprises

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Shinnanyo, Japan

Hanzo Tamabayashi