Process for crystallizing an adduct of 2,2-di(4-hydroxyphenyl) p

Details Process for crystallizing an adduct of 2,2-di(4-hydroxyphenyl) p Process for crystallizing an adduct of 2,2-di(4-hydroxyphenyl) p

Filed on

1977-09-26

Date issued

1980-06-24

Examiner

Lone, Werren B.

Patent Class

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

SubClass

Organic compounds

SubSubClass

Oxygen containing

Other Related Categories

568718, 568721, 2603478, C07C 3722, C07C 3916

Type

Patent

Status

active

Patent number

042096464

Description

ABSTRACT:
2,2-di(4-hydroxyphenyl) propane, i.e., diphenylolpropane, is purified by preparing a liquid mixture of raw diphenylolpropane, phenol and water and applying reduced pressure thereto corresponding to the vapor pressure of the mixture while simultaneously cooling same whereby an adduct of pure diphenylolpropane and phenol is crystallized.

REFERENCES:
patent: 3192270 (1965-06-01), Meyer et al.
patent: 3275708 (1966-09-01), Bylsma

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