Process for preparing 4,4'-dihydroxydiphenylmethane

Details Process for preparing 4,4'-dihydroxydiphenylmethane Process for preparing 4,4'-dihydroxydiphenylmethane

1989-03-02

1990-06-26

Lone, Werren B.

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

Organic compounds

Oxygen containing

568722, 568724, C07C 3720, C07C 3916

Patent

active

049373927

ABSTRACT:
A process for preparing 4,4'-dihydroxydiphenylmethane, which comprises reacting phenol with formaldehyde in the presence of an acidic catalyst and separating the aimed 4,4'-dihydroxydiphenylmethane from the crude dihydroxydiphenylmethane thus obtained, is disclosed. According to this process, 4,4'-dihydroxydiphenylmethane can be separated from its isomers and oligomers at a high purity and at a high yield, compared with those achieved by known methods. Thus highly useful 4,4'-dihydroxydiphenylmethane can be advantageously prepared on an industrial scale.

REFERENCES:
patent: 3073868 (1963-01-01), Prahl et al.
patent: 4294993 (1981-10-01), Li

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