Method of preparing lactide from lactate
US8759545B2 · kind B2 · utility
1Cited by
1References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 31, 2012 |
| Grant date | Jun 24, 2014 |
| Priority date | — |
| Expiry date | Aug 31, 2032 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D319/12
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The present invention provides a method of preparing lactide with a high yield from lactate obtained through a fermentation process. In certain embodiments, the invention provides a method of preparing high-purity lactide with a high yield, wherein the method comprises treating lactate with a specific solvent, using a catalyst, and phase-separating the resultant. In accordance with the invention, costs for manufacturing polylactic acid can be considerably reduced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.