Process for preparing cyclic polyethers
US4562272A · kind A · utility
2Cited by
2References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 27, 1981 |
| Grant date | Dec 31, 1985 |
| Priority date | — |
| Expiry date | Mar 27, 2001 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G65/00
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The invention relates to a process for preparing cyclic polyethers from cyclic alkylene carbonates in the presence of a solvent, wherein the process is carried out in the presence of a solvent selected from the group containing a carbonyl moiety, nitrile moiety or mixture thereof. In addition, ionic catalysts may be employed to increase the selectivity to cyclic polyether.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.