Photochemical process for the production of previtamin D3
US6180805A · kind A · utility
4Cited by
5References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 23, 1999 |
| Grant date | Jan 30, 2001 |
| Priority date | — |
| Expiry date | Jun 23, 2019 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J19/121
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A photochemical process for the production of previtamin D.sub.3 or a derivative thereof from 7-dehydrocholesterol is disclosed. The process includes irradiating the 7-dehydrocholesterol in a reactor with a UV radiation source, wherein the UV source includes an excimer or exciplex emitter which emits quasi-monochromatically according to the corona discharge mechanism in the UV range, and recovering previtamin D.sub.3 or a derivative thereof. Previtamin D.sub.3 compositions and derivatives made from this process are also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.