Patent · US Expired

Process for the preparation of L-ascorbic acid

US6197977A · kind A · utility

4Cited by

4References

13Claims

0Family size

Assignee

BASF SE

Inventors

Andreas Böttcher · Mettmann, DE
Hans Gurski · Lambsheim, DE
Thomas Kuntze · Böhl-Iggelheim, DE
Karsten Kjaergaard · Aarhus, DK

Key dates

Filing date	Apr 20, 2000
Grant date	Mar 6, 2001
Priority date	—
Expiry date	Apr 20, 2020

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07D307/62
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

The invention relates to a process for the preparation of L-ascorbic acid, which comprises lactonizing a melt of alkyl 2-keto-L-gulonate under acidic conditions.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.