Hydrocarboxylation of methylene dipropionate in the presence of propionic acid and a heterogeneous catalyst
Номер патента: EP2831031A1
Опубликовано: 04-02-2015
Автор(ы): Kelley Margaret Moran, Mesfin Ejerssa Janka, Robert Thomas Hembre, Scott Donald Barnicki, Stephen Neal Falling
Принадлежит: Eastman Chemical Co
Опубликовано: 04-02-2015
Автор(ы): Kelley Margaret Moran, Mesfin Ejerssa Janka, Robert Thomas Hembre, Scott Donald Barnicki, Stephen Neal Falling
Принадлежит: Eastman Chemical Co
Реферат: Disclosed is a process for the production and purification of glycolic acid glycolic acid derivatives by the carbonylation of methylene dipropionate in the presence of a solid acid catalyst and propionic acid. This invention discloses hydrocarboxylations and corresponding glycolic acid separations wherein the propionic acid stream is readily removed from the glycolic acid and the propion acid is recycled.
Hydrocarboxylation of methylene dipropionate in the presence of propionic acid and a heterogeneous catalyst
Номер патента: WO2013148507A1. Автор: Stephen Neal Falling,Scott Donald Barnicki,Robert Thomas Hembre,Mesfin Ejerssa Janka,Kelley Margaret Moran. Владелец: EASTMAN CHEMICAL COMPANY. Дата публикации: 2013-10-03.