公开(公告)号：US11926639B2

公开(公告)日：2024-03-12

申请号：US17756443

申请日：2020-11-19

Applicant: BASF SE

Inventor： Kathrin Luise Mariethres Werth ,  Thomas Holtmann ,  Rainer Papp ,  Mirko Haider ,  Joachim Wulff-Doering

IPC: C07F5/04

CPC classification number: C07F5/04

Abstract: A process for preparing oligo ethylene glycol methyl ether borate involves feeding boric acid and oligo ethylene glycol monomethyl ether into a reactor, and reacting to obtain a raw product containing oligo ethylene glycol methyl ether borate, water, and unreacted boric acid and oligo ethylene glycol monomethyl ether. The raw product is fed to a reactive distillation device and boric acid is reacted with oligo ethylene glycmonomethyl ether for full conversion of boric acid. A distillate stream containing water is transferred from the top of the reactive distillation device to a condenser, and a condensed liquid stream is recycled to the top of the reactive distillation device. A bottom product stream containing oligo ethylene glycol methyl ether borate is withdrawn from the reactive distillation device. The bottom product stream is partially recycled to a reboiler. The resulting vapor stream is recycled to the bottom of the reactive distillation device.

公开(公告)号：US20230002421A1

公开(公告)日：2023-01-05

申请号：US17756443

申请日：2020-11-19

Applicant: BASF SE

Inventor： Kathrin Luise Mariethres WERTH ,  Thomas Holtmann ,  Rainer Papp ,  Mirko Haider ,  Joachim Wulff-Doering

IPC: C07F5/04

Abstract: A process for preparing oligo ethylene glycol methyl ether borate involves feeding boric acid and oligo ethylene glycol monomethyl ether into a reactor, and reacting to obtain a raw product containing oligo ethylene glycol methyl ether borate, water, and unreacted boric acid and oligo ethylene glycol monomethyl ether. The raw product is fed to a reactive distillation device and boric acid is reacted with oligo ethylene glycmonomethyl ether for full conversion of boric acid. A distillate stream containing water is transferred from the top of the reactive distillation device to a condenser, and a condensed liquid stream is recycled to the top of the reactive distillation device. A bottom product stream containing oligo ethylene glycol methyl ether borate is withdrawn from the reactive distillation device. The bottom product stream is partially recycled to a reboiler. The resulting vapor stream is recycled to the bottom of the reactive distillation device.