Organic compounds -- part of the class 532-570 series – Organic compounds – Oxygen containing
Patent
1998-12-30
2000-10-17
Shippen, Michael L.
Organic compounds -- part of the class 532-570 series
Organic compounds
Oxygen containing
568728, C07C 3912
Patent
active
061334863
ABSTRACT:
The disclosure is of a process for recovering valuable phenol and acetone from by-products of the condensation of phenol and a ketone from a mother liquor obtained for example upon crystallization of a 1:1 adduct of phenol and bisphenol, the mother liquor containing phenol, bisphenol, isomers, contaminant by-products of the condensation reaction of phenol with the ketone and acidic impurities. The mother liquor is distilled/evaporated leaving a tarry residue, which is the feedstock for the process of the invention. The recovery comprises catalytically cracking the feedstock with catalytic proportions of an aromatic sulfonic acid to extract the bisphenol-A values as phenol and acetone.
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Graff Jos H. M.
Maas Christianus J. J.
Oyevaar Martin H.
General Electric Company
Shippen Michael L.
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