Process for preparing 2,5-dihydroxyterephthalic acid
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United States of America Patent
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Mar 25, 2014
Grant Date -
Dec 6, 2012
app pub date -
May 29, 2012
filing date -
May 30, 2011
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Abstract
The present invention provides a process for preparing 2,5-dihydroxyterephthalic acid which comprises reacting a dialkali metal salt of hydroquinone with carbon dioxide in a reaction medium in the presence of a potassium salt represented by formula (I):
wherein n is an integer of 1-17.
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