Method for producing taurine and method for removing impurity from reaction system for producing taurine
US10604478B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 22, 2019 |
| Grant date | Mar 31, 2020 |
| Priority date | — |
| Expiry date | Aug 22, 2039 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C309/14
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Provided is a method for producing taurine including: providing a reaction solution comprising alkali metal taurinate and/or alkali metal isethionate, passing at least a portion of the reaction solution through a column of basic anion exchange resin, adsorbing anions of alkali metal taurinate and/or alkali metal isethionate to the basic anion exchange resin, and collecting an eluate comprising at least one impurity, desorbing anions of alkali metal taurinate and/or alkali metal isethionate from the basic anion exchange resin with an alkaline solution, and collecting a desorption liquid comprising alkali metal taurinate and/or alkali metal isethionate, subjecting the desorption liquid comprising alkali metal taurinate to acidification or subjecting the desorption liquid comprising alkali metal isethionate to aminolysis and acidification, thereby obtaining taurine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.