Process for enriching enantiomers from an enantiomer mixture
Номер патента: MY191883A
Опубликовано: 18-07-2022
Автор(ы): Heydrich Gunnar, RAULUS Matthias, WLOCH Sebastian
Принадлежит: BASF SE
Опубликовано: 18-07-2022
Автор(ы): Heydrich Gunnar, RAULUS Matthias, WLOCH Sebastian
Принадлежит: BASF SE
Реферат: The present invention relates to a process for enriching enantiomers from an enantio-mer mixture by a fractionating melt crystallization in a melt crystallization apparatus. The invention specifically relates to a process for producing an enantiomer-enriched chiral terpene, in particular of D/L-lsopulegol. The process comprises: i) a crystallization step to obtain a crystallizate and a mother melt and removal of the mother melt from the crystallizate to afford a mother melt fraction; ii) sweating of the crystallizate obtained in step i) to afford a molten sweating frac-tion and iii) subsequent melting of the sweated crystallizate to afford a molten crystallizate fraction, wherein the optical rotation at least of the sweating fraction is determined online using a polarimeter and the changeover from step ii) to step iii) is controlled online by means of at least one control unit. (No suitable figure)
Process for enriching enantiomers from an enantiomer mixture
Номер патента: US20200039904A1. Автор: Gunnar Heydrich,Matthias Rauls,Sebastian WLOCH. Владелец: BASF SE. Дата публикации: 2020-02-06.