Process for preparing 1,3-alkanediols from 3-hydroxyesters
US6617477B2 · kind B2 · utility
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18References
19Claims
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Key dates
| Filing date | Nov 29, 2001 |
| Grant date | Sep 9, 2003 |
| Priority date | — |
| Expiry date | Nov 29, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J23/72
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for preparing an 1,3-alkanediol from a 3-hydroxyester includes hydrogenating a 3-hydroxyester in an alcohol-containing solvent in the presence of a hydrogenation catalyst prepared by adding an alkaline precipitator to an aqueous solution containing a copper salt to form particles, and then aging the particles following addition of colloidal silica thereto. Novel hydrogenation catalysts so prepared are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.