Recovering values from heavy ends in bisphenol-A production

Details Recovering values from heavy ends in bisphenol-A production Recovering values from heavy ends in bisphenol-A production

1993-03-01

1994-04-05

Reamer, James H.

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

Organic compounds

Oxygen containing

C07C 3774

Patent

active

053007026

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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Ketamura et al., Chem. Abst., vol. 110,#135897h(1989).
Nomura et al., Chem Abst., vol. 115,#50,495d(1991).
Hanaue et al., Chem. Abst., vol. 81,#78,458x(1994).

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