Process for the preparation of alkylene glycols
US6479715B1 · kind B1 · utility
1Cited by
4References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 9, 2002 |
| Grant date | Nov 12, 2002 |
| Priority date | — |
| Expiry date | Apr 9, 2022 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C29/106
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The present invention relates to a catalytic process for the preparation of alkylene glycols from alkylene oxide and water. Further, the invention relates to a method of preservation of catalysts in alkylene oxide containing systems. More in particular, it has been found that particular acids have a positive effect on the lifetime of catalyst systems based on anion exchange resins, and particularly those in the bicarbonate form.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.