Purification of 1, 1, 1-tris(4'-hydroxyphenyl)ethane

Details Purification of 1, 1, 1-tris(4'-hydroxyphenyl)ethane Purification of 1, 1, 1-tris(4'-hydroxyphenyl)ethane

1990-02-09

1991-02-12

Raymond, Richard L.

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

Organic compounds

Oxygen containing

568756, C07C 3912

Patent

active

049925989

ABSTRACT:
A process for the purificationof 1,1,1-tris(4'-hydroxyphenyl)ethane by washing a crude admixture containing both it and impurities with a saturated solution of 1,1,1-tris(4'-hydroxyphenyl)ethane in water and methanol; and isolating the washed crude admixture from the effluent and dissolving the washed crude admixture in methanol, and adding water and sodium borohydride to the dissolved, washed crude admixture to form a precipitate of 1,1,1-tris(4'-hydroxyphenyl)ethane, and filtering the precipitate to form a resultant purified 1,1,1-tris(4'-hydroxyphenyl)ethane and a filtrate. Another embodiment of the invention provides iteratively repeating the process by washing an additional crude admixture batch with the filtrate from a prior purification.

REFERENCES:
patent: 2789143 (1957-04-01), Arnold et al.
patent: 3544514 (1970-12-01), Schnell
patent: 3579542 (1971-05-01), Meyer et al.
patent: 3644538 (1972-02-01), Starnes
patent: 3969421 (1976-07-01), d'Ostrowick et al.
patent: 4337369 (1982-06-01), Vanderpool et al.
patent: 4385191 (1983-05-01), Petrille et al.
patent: 4394496 (1983-07-01), Schrader

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