Treatment of bisphenol-A residue streams

Details Treatment of bisphenol-A residue streams Treatment of bisphenol-A residue streams

2009-03-03

2011-10-25

Davis, Brian J (Department: 1621)

Organic compounds -- part of the class 532-570 series

Organic compounds

Oxygen containing

C568S724000, C568S749000

Reexamination Certificate

active

08044248

ABSTRACT:
In a method of reducing the viscosity of a residue stream from the production of bisphenol-A, the residue stream is combined with at least one of (a) a bottoms stream comprising polyalkylaromatic compounds and remaining after the fractionation of an effluent from an aromatics alkylation process to remove monoalkylaromatic compounds, (b) a stream containing at least 90 wt % phenol and (c) a mixture of phenol and said bottoms stream (a) to produce a combined stream.

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Written Opinion of the International Searching Authority, mailed Aug. 28, 2009.
International Search Report, mailed Aug. 28, 2009.

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