Process for a continuous production of polyetherols
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United States of America Patent
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Feb 17, 2015
Grant Date -
Jan 24, 2013
app pub date -
Jul 18, 2012
filing date -
Jul 19, 2011
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Abstract
A process for a continuous production of a polyetherol first involves reacting a catalyst (5) with an alcohol starter (3) or an alkoxylated precursor, to give a mixture comprising an alcoholate and water. Water is then removed from the mixture. The process further involves feeding the alcoholate into a bubble column and feeding an alkylene oxide into the bottom of a compartment of the bubble column, such that the alkylene oxide rises in the alcoholate. The alkylene oxide then reacts with the alcoholate or a secondary product from the reaction between the alcoholate and alkylene oxide, to give the polyetherol.
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