Method of preparing a mixture of mannitol and sorbitol by continuous hydrogenation of glucosone
US6476218B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 18, 2000 |
| Grant date | Nov 5, 2002 |
| Priority date | — |
| Expiry date | Apr 18, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07B2200/07
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The invention relates to a method of preparing a mixture of mannitol and sorbitol, charactertized by the fact that continuous hydrogenation of glucosone with a solid matter content equal to at least 30%, preferably between 30 and 50%, is carried out in a succession of fixed catalyst beds disposed in series, which includes a first hydrogenation zone, made up of at least one fixed catalyst bed where hydrogenation is carried out at a temperature equal at the most to 80° C., preferably between 50 and 80° C., and a second hydrogenation zone, made up of at least one fixed catalyst bed where hydrogenation is carried out at a temperature equal to at least 80° C., preferably between 100 to 150° C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.