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Process for preparing tetramethyl glycolide










Image Number 2 for United States Patent #7928251.

The present invention relates to a process for preparing tetramethylglycolide by heating a composition which comprises at least 50% by weight of 2-hydroxy-isobutyric acid and/or tetramethylglycolide to a temperature of at least 100.degree. C.








 
 
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