Production of the from 1,4-butanediol using a polybenzimidazole catalyst
US5099039A · kind A · utility
2Cited by
6References
7Claims
0Family size
Assignee
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Key dates
| Filing date | Nov 6, 1990 |
| Grant date | Mar 24, 1992 |
| Priority date | — |
| Expiry date | Nov 6, 2010 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D307/08
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for converting 1,4-butanediol to tetrahydrofuran using polybenzimidazole to catalyze the reaction. The conversion is accomplished by heating the 1,4-butanediol in the presence of the PBI. The THF product may be distilled from the reaction solution as an azeotrope with water. To function as the catalyst, the PBI must first be pre-treated with a strong aqueous acid such as sulfuric acid. The catalyst may be in the form of microporous resin beads, hollow fibers, or other forms of PBI. This process exhibits a high selectivity for producing THF without side reactions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.