Recovering values from heavy ends in bisphenol-A production
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United States of America Patent
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Apr 5, 1994
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N/A
app pub date -
Mar 1, 1993
filing date -
Mar 1, 1993
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Abstract
In the production of bisphenol-A from the reaction of phenol and acetone, values are recovered from a 'heavy ends' fraction by passing the fraction through a thin-film evaporator, making a light fraction which is fractionally distilled into three portions, two of which have recoverable proportions of bisphenol-A, and recovering bisphenol-A from at least one of them.
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