Purification of 4,4-dihydroxybiphenyl

Details Purification of 4,4-dihydroxybiphenyl Purification of 4,4-dihydroxybiphenyl

1982-05-10

1983-11-08

Lone, Werren B.

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

Organic compounds

Oxygen containing

568753, C07C 3770

Patent

active

044144229

ABSTRACT:
4,4'-Dihydroxybiphenyl is purified to remove sulfur-containing impurities, color bodies and/or phenyl-substituted phenol compounds by heating in the presence of a mixture of water and a water-miscible organic compound selected from acetone and C.sub.1-6 alkanols or diols for a time sufficient to remove substantial quantities of the sulfur-containing impurity, color bodies and/or phenyl-substituted phenol compound and thereafter recovering the purified 4,4'-dihydroxybiphenyl.

REFERENCES:
patent: 3326986 (1967-06-01), Dugan et al.
patent: 3919330 (1975-11-01), Kwantes et al.
patent: 3972950 (1976-08-01), Kwantes
patent: 4242527 (1980-12-01), Mark et al.
patent: 4300000 (1981-11-01), Reinitz
patent: 4320234 (1982-03-01), Mark et al.
patent: 4340768 (1982-07-01), Jinbo et al.

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