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    PROCESS FOR ENRICHING ENANTIOMERS FROM AN ENANTIOMER MIXTURE
    5.
    发明申请
    PROCESS FOR ENRICHING ENANTIOMERS FROM AN ENANTIOMER MIXTURE 审中-公开

    公开(公告)号：US20200039904A1

    公开(公告)日：2020-02-06

    申请号：US16338633

    申请日：2017-10-05

    申请人： BASF SE

    发明人： Sebastian WLOCH ,  Gunnar HEYDRICH ,  Matthias RAULS

    IPC分类号： C07C29/17 ,  C07C29/78 ,  B01D9/00

    摘要： The present invention relates to a process for enriching enantiomers from an enantiomer 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-Isopulegol. 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 fraction 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.

    METHOD FOR OBTAINING CRYSTALLINE 2'-FUCOSYLLACTOSE
    7.
    发明申请
    METHOD FOR OBTAINING CRYSTALLINE 2'-FUCOSYLLACTOSE 有权

    公开(公告)号：US20210388014A1

    公开(公告)日：2021-12-16

    申请号：US17286474

    申请日：2019-10-17

    申请人： BASF SE

    发明人： Michael PUHL ,  Sebastian WLOCH ,  Peter OEDMAN ,  Anne-Catrin LETZEL ,  Hartwing SCHROEDER ,  Jacek MALISZ ,  Daniel SEIBERT-LUDWIG ,  Emiel Jan KAPPERT ,  Chung Huan WONG ,  Michael BARROS GROSS ,  Martin VIERTELHAUS

    IPC分类号： C07H1/08 ,  C07H3/06

    摘要： The present invention relates to a method for obtaining crystalline 2′-fucosyllactose from a 2′-FL raw material, which contains 2′-FL as a main constituent and at least 0.5% by weight, frequently at least 1% by weight, in particular at least 2% by weight, more particularly at least 5% by weight, and especially at least 8% by weight,based on the total amount of mono-and oligosaccharides in the raw material, of one or more mono- or oligosaccharides different from 2′-FL, where the method comprises a)providing a solution of the 2′-FL raw material in water, which does not contain more than 10% by weight, preferably not more than 7% by weight, more preferably not more than 5% by weight of organic solvents, based on the total amount of water; b) effecting the crystallization of 2′-FL from the solution provided in step a) by inducing conditions of a controlled super saturation in the solution; and c) separating crystalline 2′-FL from the mother liquor, and where during controlled supersaturation in step b) not more than 10% by weight, preferably not more than 7% by weight, more preferably not more than 5% by weight of organic solvents are present, based on the total amount of water present during step b).