Process for producing ammonium p-styrenesulfonate
AssigneeToyo Soda Manufacturing Co., Ltd.
InventorsKanzi Katsuragawa, Tatsuo Hattori, Keiichi Kihara, Hanzo Tamabayashi
Life of this patent
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Abstract
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.
Claims5
A process for continuously producing ammonium p-styrenesulfonate from an alkali metal p-styrenesulfonate which comprises producing an amine salt of p-styrenesulfonic acid by contacting an aqueous solution of an alkali metal p-styrenesulfonate with a mineral acid salt of an organic amine having more than 7 carbon atoms in an organic solvent;
- contacting the organic solution of an amine salt of p-styrenesulfonic acid with ammonia to produce ammonium p-styrenesulfonate and to produce said organic amine;
- and reacting said organic amine with a mineral acid to reproduce said mineral acid salt of said organic amine and recycling said reproduced salt back to the first step.
Dependencies are inferred from the claim text.