Purification process for hydrophilic organic solvent
US11759774B2 · kind B2 · utility
0Cited by
9References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 16, 2016 |
| Grant date | Sep 19, 2023 |
| Priority date | — |
| Expiry date | Apr 21, 2037 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C41/36
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Methods for the removal of ionic contaminants from a hydrophilic organic solvent by a mixed bed of ion exchange resins are described. A mixed bed of ion exchange resins with gel-type strong-acid cationic ion exchange resin with a specific moisture holding capacity and gel-type anionic ion exchange resin is used in some embodiments of such methods.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.