Purification of tetrahydrofuran
US4413136A · kind A · utility
2Cited by
3References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 2, 1982 |
| Grant date | Nov 1, 1983 |
| Priority date | — |
| Expiry date | Aug 2, 2002 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D307/08
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The amount of methacrolein impurity in tetrahydrofuran made from acetylene and formaldehyde can be significantly reduced by treating it with hydrogen peroxide during an interval in the multi-stage distillation tetrahydrofuran refining procedure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.