公开(公告)号：US11014903B2

公开(公告)日：2021-05-25

申请号：US16485602

申请日：2018-02-16

Applicant: TOHOKU UNIVERSITY

Inventor： Naomi Kitakawa ,  Kousuke Hiromori ,  Sayaka Hosokawa ,  Tomoya Watanabe

IPC: C07D311/72 ,  B01J41/05 ,  B01D15/18 ,  B01D15/36 ,  B01D15/42 ,  C11C3/00

Abstract: A vitamin E production method and a vitamin E production device which can highly purify vitamin E in a vitamin E concentrated fraction are provided. A raw oil supply section supplies a raw oil to a series column in which two or more columns including a strongly basic anion exchanger are coupled in series to adsorb vitamin E included in the raw oil on the strongly basic anion exchanger of at least one column from among the series column. A desorption solution supply section supplies a desorption solution to a column on which vitamin E has been adsorbed to desorb vitamin E from the strongly basic anion exchanger of the column.

公开(公告)号：US11691940B2

公开(公告)日：2023-07-04

申请号：US17261211

申请日：2019-08-09

Applicant: TOHOKU UNIVERSITY

Inventor： Naomi Kitakawa ,  Kousuke Hiromori ,  Kazuki Murakami ,  Tomoya Watanabe

IPC: C07C67/08

CPC classification number: C07C67/08

Abstract: A method for producing a polyvalent alcohol ester compound, characterized in that a polyvalent alcohol compound and a carboxylic acid compound are allowed to react in the presence of an acidic solid catalyst swollen with the polyvalent alcohol compound or the carboxylic acid compound without using a solvent to selectively produce a monocarboxylic acid ester or a polycarboxylic acid ester of a polyvalent alcohol. In this manner, a mono-fatty acid ester and a poly-fatty acid ester (e.g., di-fatty acid ester) of a polyvalent alcohol can be selectively and effectively produced from a polyvalent alcohol compound and a fatty acid compound.