Method for purifying 1,1,1-tris(4-hydroxyphenyl)-alkanes

Details Method for purifying 1,1,1-tris(4-hydroxyphenyl)-alkanes Method for purifying 1,1,1-tris(4-hydroxyphenyl)-alkanes

1996-09-27

1997-09-30

Dees, Jose G.

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

Organic compounds

Oxygen containing

568720, C07C 3768, C07C 3912

Patent

active

056727763

ABSTRACT:
Tris(4-hydroxyphenyl)alkanes such as 1,1,1 -tris(4-hydroxyphenyl)ethane are purified by formation of an adduct with a molar excess of a C.sub.1-4 primary alkyl tertiary amine, preferably triethylamine. Adduct formation is preferably effected in a polar organic solvent such as methanol. The pure tris(4-hydroxyphenyl)alkane may be recovered from the adduct by thermal or aqueous acid-promoted cracking.

REFERENCES:
patent: 4992598 (1991-02-01), Strutz
patent: 5130467 (1992-07-01), Mott
patent: 5202505 (1993-04-01), Murphy

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