公开(公告)号：US20210363095A1

公开(公告)日：2021-11-25

申请号：US17339940

申请日：2021-06-05

申请人： Nankai University ,  Tianjin Nankai University Castor Engineering S&T Co., Ltd.

发明人： Feng YE ,  Liangnian HE ,  Hongru LI ,  Gang LI ,  Fei YOU ,  Qingrui WANG ,  Song GAO ,  Xing HE ,  Xiaoying CUI

IPC分类号： C07C69/732 ,  C07C67/08 ,  B01J31/02

摘要： The disclosure is about a method capable of realizing the preparation and in-situ separation of the oligomeric ricinoleate, which uses the ricinoleic acid as raw material, and uses a protonic acid-type ionic liquid as a catalyst to cause the dehydration and esterification reactions between ricinoleic acid molecules. By continuously distilling out the generated water under a reduced pressure, the oligomeric ricinoleate with a polymerization degree of 2 to 10 is obtained. After the reaction, a method of washing with water or static stratification is selected to recover the catalyst according to the miscibility of the catalyst and reaction system. In his disclosure, renewable raw materials are used, the process is clean and pollution-free, and the operation is simple.