Process for preparing prilled bisphenol A

Details Process for preparing prilled bisphenol A Process for preparing prilled bisphenol A

1993-04-13

1994-12-06

Evans, Joseph E.

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

Organic compounds

Oxygen containing

264 13, 568723, 568724, C07C 3788, C07C 3916

Patent

active

053713028

ABSTRACT:
The invention relates to a process for preparing prilled bisphenol A by granulation which comprises adding compounds soluble in molten bisphenol A, not affecting adversely the melt color of bisphenol A to any significant extent, and have a melting point of 60.degree. C. or more to bisphenol A and granulating and also to a process which comprises adding the reaction mother liquor or cyrstallization mother liquor produced in the manufacturing step of bisphenol A to bisphenol A or the adduct of bispheol A and phenol or a mixture of bispheol A and phenol, removing the phenol, and granulating. The processes yield prilled bispheol A which have high strength and resist powdering.

REFERENCES:
patent: 3518329 (1970-06-01), Hoogendonk
patent: 4160110 (1979-07-01), Carnahan
patent: 4533764 (1985-08-01), Chang et al.
patent: 4894486 (1990-01-01), Neil et al.
patent: 5091591 (1992-02-01), Cipullo

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