Process for making isoidide
US10059719B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 9, 2016 |
| Grant date | Aug 28, 2018 |
| Priority date | — |
| Expiry date | Sep 9, 2036 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C29/132
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A process is provided for making isoidide, wherein a dextrose feed is first converted by a combination of epimerization and hydrogenation to an iditol-enriched mixture of hexitols in the presence of hydrogen and in the further presence of a single, dual purpose catalyst, and the iditol is then conventionally fully dehydrated to provide isoidide. In one general embodiment, the dehydration is performed on the iditol-enriched mixture of hexitols to provide an isohexides product mixture including isoidide, and the isoidide is recovered therefrom. In another general embodiment, iditol is separated from the iditol-enriched mixture of hexitols, and at least a portion of this iditol is then dehydrated to provide an isoidide product.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.