Recrystallization of bisphenol A by azeotropically drying the so

Details Recrystallization of bisphenol A by azeotropically drying the so Recrystallization of bisphenol A by azeotropically drying the so

1985-12-30

1987-01-20

Lone, Werren B.

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

Organic compounds

Oxygen containing

C07C 3784, C07C 3768

Patent

active

046381023

ABSTRACT:
This invention discloses a high yield azeotropic separation procedure for isomers of bisphenol A. Specifically, the o,p'-isomer is separated from the p,p'-isomer by removal of a cosolvent thus producing crystallization. Water and an organic solvent not miscible with water are used as cosolvents.

REFERENCES:
patent: 2791616 (1957-05-01), Luten, Jr.
patent: 3207795 (1965-09-01), Prahl et al.
patent: 3326986 (1967-06-01), Dugan et al.
patent: 4156098 (1979-05-01), Li
patent: 4242527 (1980-12-01), Mark
patent: 4294993 (1981-10-01), Li
patent: 4354046 (1982-10-01), Ladewig et al.

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