Process for purification of dihydroxydiphenylsulfone

Details Process for purification of dihydroxydiphenylsulfone Process for purification of dihydroxydiphenylsulfone

1989-01-13

1990-06-12

Ceperley, Mary E.

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

Organic compounds

Sulfur containing

C07C14710

Patent

active

049334948

ABSTRACT:
Colored dihydroxydiphenylsulfone obtained by a reaction between phenol and sulfuric acid is treated with activated carbon and a hydrotalcite compound in a mixed solvent comprising methanol and water at a weight ratio of from 10/90 to 60/40. According to this process, colored dihydroxydiphenylsulfone can be industrially advantageously purified at a high efficiency.

REFERENCES:
patent: 4458030 (1984-07-01), Manabe et al.
patent: 4656156 (1987-04-01), Misra

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