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公开(公告)号：US20210324139A1
公开(公告)日：2021-10-21
申请号：US17273386
申请日：2019-09-04
发明人： Dieter Scherer , Benjamin Wyler , Jieping Wei , Yanling Yang , Daniel Shan , Reta Zhu , Paul Hanselmann , Tania Kjellerup Lind , Emelie Josefina Nilsson , Vitaly Kocherbitov , Johan Engblom
IPC分类号： C08G65/332
摘要： The invention discloses a method for preparation of polyoxyethylene 1,4-sorbitan fatty acid ester, such as Polysorbate 80, by a reaction of polyoxyethylene 1,4-sorbitan with a fatty acid chloride, and polyoxyethylene 1,4-sorbitan fatty acid esters obtainable by this method.
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公开(公告)号：US20220064135A1
公开(公告)日：2022-03-03
申请号：US17423193
申请日：2020-01-16
发明人： Jieping Wei , Gesa Paradies , Benjamin Wyler , Dieter Scherer , Yanling Yang , Xiaolong Zhang , Weicheng Jiang , Reta Zhu
IPC分类号： C07D307/20
摘要： The invention discloses a method for preparation of 1,4-sorbitan by dehydration of D-sorbitol in aqueous medium, wherein one equivalent of water is removed and a cyclization occurs, followed by a treatment with ethanol and isopropanol.
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公开(公告)号：US11174236B2
公开(公告)日：2021-11-16
申请号：US17265939
申请日：2019-08-26
发明人： Jieping Wei , Yanling Yang , Daniel Shan , Reta Zhu , Paul Hanselmann , Dieter Scherer
IPC分类号： C07D307/20
摘要： The invention discloses a method for preparation of 1,4-sorbitan by dehydration of D-sorbitol, wherein one equivalent of water is removed and a cyclization occurs, followed by a treatment with ethanol and isopropanol.
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