Method melt crystallization for preparing high-purity glabridin
US12344593B2 · kind B2 · utility
Inventors
Key dates
| Filing date | May 8, 2024 |
| Grant date | Jul 1, 2025 |
| Priority date | — |
| Expiry date | May 8, 2044 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D493/04
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The present invention provides a melt crystallization method for preparing high-purity glabridin, belonging to the field of chemical purification technology. The method mainly includes steps of melt crystallization, sweating, and material melting. This invention adopts a fractionating melt crystallization method to purify glabridin. The melt crystallization method was utilized in the present invention for purification, and can obtain ultra-high purity products with purity more than 99.9%. This method has the characteristics of simple operation, no need for a large amount of solvent, high product purity, environmental protection, and low energy consumption. It is a green separation and purification process. The technology is suitable for high demand of the market on high-purity glabridin, and has strong market competitive advantages.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.