TITANIUM-BASED CATALYST SHOWING EXCELLENT ACTIVITY AND SELECTIVITY IN POLYCONDENSATION REACTIONS
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United States of America Patent
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Issued Date -
Jan 23, 2014
app pub date -
Jul 26, 2013
filing date -
Mar 28, 2008
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Abandoned
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Abstract
A polycondensation reaction mixture is disclosed which includes a catalyst, acyclic esters, ethylene glycol, and water. The catalyst is a titanium atrane. The polycondensation reaction mixture is prepared by the steps of (a) contacting a solution comprising a titanium (IV) alkoxide compound and a first solvent with an organic acid; (b) contacting the solution formed in step (a) with a substituted or unsubstituted trialkanolamine to form an impure catalyst; (c) purifying the impure catalyst to form the titanium atrane catalyst; and (d) bringing the catalyst into contact with the acyclic esters under conditions that produce the ethylene glycol and water.
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