Process for the preparation of storage-stable levulinic acid
US5189215A · kind A · utility
5Cited by
1References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 28, 1991 |
| Grant date | Feb 23, 1993 |
| Priority date | — |
| Expiry date | Oct 28, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C51/347
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for the preparation of color-stable levulinic acid by saponification of acetylsuccinates with aqueous mineral acids, by continuously treating the starting products with steam in counter-current in a reactor cascade, the reaction being carried out above the boiling point of the alcohol being formed in the reaction or above the boiling point of the aqueous azeotrope being formed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.