Process for the purification of dihydric phenols

A process comprising the steps of dissolving a dihydric phenol in a solvent to form a solution A, contacting the solution A with an adsorbent material selected from the group consisting of metal oxides, modified metal oxides, activated carbons, and clays, filtering the adsorbent material to form a s...

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Main Authors Ashtekar, Sunil, Malusare, Mahesh, Kishan, Gurram, Narayanan, Pushpa, GV, Ramanarayanan, Dixit, Arun, Nadkarni, Pradeep, Lens, Jan Plen
Format Patent
LanguageEnglish
Published 02.06.2009
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Summary:A process comprising the steps of dissolving a dihydric phenol in a solvent to form a solution A, contacting the solution A with an adsorbent material selected from the group consisting of metal oxides, modified metal oxides, activated carbons, and clays, filtering the adsorbent material to form a solution B, adding an anti-solvent to the solution B to form a solution C, and distilling the solution C, wherein the dihydric phenol is represented by Formula (I): wherein R is a hydrogen atom or an aliphatic functionality having 1 to 6 carbon atoms and n is an integer having a value of 1 to 4.