Process for preparing oligo ethylene glycol methyl ether borate

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United States of America Patent

PATENT NO 11926639
APP PUB NO 20230002421A1
SERIAL NO

17756443

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Abstract

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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 A bottom product stream containing oligo ethylene glycol methyl ether borate is withdrawn from the reactive distillation device.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.

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Patent Owner(s)

Patent OwnerAddress
BASF SECARL-BOSCH-STRASSE 38 LUDWIGSHAFEN AM RHEIN 67056

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Haider, Mirko Ludwigshafen am Rhein, DE 5 5
Holtmann, Thomas Ludwigshafen am Rhein, DE 7 13
Papp, Rainer Ludwigshafen am Rhein, DE 25 202
Werth, Kathrin Luise Mariethres Duesseldorf, DE 1 0
Wulff-Doering, Joachim Ludwigshafen am Rhein, DE 3 2

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