Method for preparing taurine
US11773056B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 16, 2021 |
| Grant date | Oct 3, 2023 |
| Priority date | — |
| Expiry date | Oct 15, 2041 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C303/44
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The present invention discloses a method for preparing taurine. According to the method, ethylene oxide reacts with hydrogen sulfite to generate isethionate, after the isethionate and ammonia are subjected to an ammonolysis reaction under a microwave condition, ammonia removal is conducted to obtain a taurine salt solution, the taurine salt solution is converted into a taurine solution through acidification or ion exchange or ion membrane or heating, and taurine is extracted through concentration and crystallization. According to the present invention, the reaction time can be shortened, and the reaction temperature and pressure can be reduced, thereby achieving high yield and reducing energy consumption.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.