Organic compounds -- part of the class 532-570 series – Organic compounds – Oxygen containing
Patent
1988-09-28
1990-03-06
Lone, Werren B.
Organic compounds -- part of the class 532-570 series
Organic compounds
Oxygen containing
C07C 3916, C07C 3700, C07C 3711
Patent
active
049067893
ABSTRACT:
A process for the production of bisphenol A from phenol and acetone, comprises introducing a substantially anhydrous reaction mixture of phenol, acetone, and recycled solution of bisphenol A and reaction by-products in phenol into a reaction zone containing a cation-exchange resin catalyst, such catalyst being a mixture of resin having a macroporous structure and resin having a microporous structure in a ratio of 0.05:1 to 0.5:1 by weight, the mol ratio of phenol to acetone being 5:1 to 30:1, and the concentration of bisphenol A being 12 to 20% by weight. The temperature of the reaction zone is maintained between 60 degrees and 95 degrees C. The resulting reacted reaction mixture is withdrawn from the reaction zone, the concentration of bisphenol A being 21 to 35% by weight and the amount of reaction by-products being 12 to 24% by weight. Such withdrawn reaction mixture is treated to recover bisphenol A product and to provide the recycled solution of bisphenol A and reaction by-products in phenol.
REFERENCES:
patent: 3049569 (1962-08-01), Apel et al.
patent: 3221061 (1965-11-01), Grover et al.
patent: 4301305 (1981-11-01), Kiedik et al.
patent: 4319053 (1982-03-01), Heuser et al.
patent: 4391997 (1983-07-01), Mendiratta
Bek Teodor
Czyz Jerzy
Grzywa Edward
Kiedik Maciej
Kolt Jo
Instytut Ciezkiej Syntezy Organicznej "Blachownia"
Lone Werren B.
Zaklady Chemiczne "Blachownia"
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