Process for preparing tetrahydrofuran
US4093633A · kind A · utility
14Cited by
3References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 28, 1977 |
| Grant date | Jun 6, 1978 |
| Priority date | — |
| Expiry date | Jan 28, 1997 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D307/08
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
In the process for preparing tetrahydrofuran by the dehydrocyclization of 1,4-butanediol in the presence of a non-volatile acid catalyst, wherein vapor mixture of water and tetrahydrofuran is continuously taken out from the reaction zone and subjected to the azeotropic distillation in three distillation columns operated under specified conditions thereby obtaining tetrahydrofuran of high quality in a high yield.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.