Preparation of mixtures of butanediols
US4879420A · kind A · utility
9Cited by
2References
18Claims
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Inventor
Key dates
| Filing date | May 6, 1988 |
| Grant date | Nov 7, 1989 |
| Priority date | — |
| Expiry date | May 6, 2008 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C45/59
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Process for preparing 2-alkyl-1,4-butanediols and mixtures with 1,4-butanediol which comprises bringing together, at an initial alkaline pH, and at a temperature and pressure suitable for reaction, a mixture of 4-hydroxybutyraldehyde and/or its cyclic acetal, 2-hydroxytetrahydrofuran, hydrogen, an unsubstituted aliphatic aldehyde, especially formaldehyde, and a hydrogenation catalyst. Also processes for preparing mixtures of tetrahydrofuran and 3-alkyltetrahydrofuran from the diol mixtures, and copolymers from the tetrahydrofuran mixtures.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.