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TITANIUM-BASED CATALYST SHOWING EXCELLENT ACTIVITY AND SELECTIVITY IN POLYCONDENSATION REACTIONS
TITANIUM-BASED CATALYST SHOWING EXCELLENT ACTIVITY AND SELECTIVITY IN POLYCONDENSATION REACTIONS
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机译:钛基催化剂在缩聚反应中表现出卓越的活性和选择性
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摘要
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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