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1. (WO2018052680) CYCLIC PROCESS FOR PRODUCING TAURINE

Pub. No.:    WO/2018/052680    International Application No.:    PCT/US2017/048352
Publication Date: Fri Mar 23 00:59:59 CET 2018 International Filing Date: Fri Aug 25 01:59:59 CEST 2017
IPC: C07C 303/02
C07C 303/32
Applicants: VITAWORKS IP, LLC
Inventors: HU, Songzhou
Title: CYCLIC PROCESS FOR PRODUCING TAURINE
Abstract:
There is disclosed a process for producing taurine from ammonium isethionate by the ammonolysis of alkali isethionate in the presence of alkali ditaurinate or alkali tritaurinate, or their mixture, to inhibit the formation of byproducts and to continuously convert the byproducts of the ammonolysis reaction to alkali taurinate. Alkali taurinate is reacted with ammonium isethionate to obtain taurine and to regenerate alkali isethionate. The production yield is increased to from 90% to nearly quantitative. The ammonolysis reaction is catalyzed by alkali salts of hydroxide, sulfate, sulfite, phosphate, or carbonate.