Purifying cumene hydroperoxide

Details Purifying cumene hydroperoxide Purifying cumene hydroperoxide

1986-03-20

1987-03-31

Bascomb, Wilbur

Distillation: processes, separatory

Plural distillations performed on same material

One a filming distillation

203 73, 203 80, 159 49, 568576, B01D 122, C07C17904

Patent

active

046541241

ABSTRACT:
Crude cumene hydroperoxide is purified by subjecting it to an evaporation step at a pressure of about 2 to 10 (preferably 3 to 7) mg Hg abs. and a temperature of about 150.degree. F. to about 210.degree. F. (pref. about 175.degree. F. to 195.degree. F.) to remove light impurities and then subjecting the residue from the first evaporation step to a second evaporation step also at a temperature of about 135.degree. F. to 210.degree. F. (pref. about 150.degree. F. to 185.degree. F.) but at a pressure of about 0.5 to about 8 (preferably 1 to 3) mm Hg abs. to obtain a distillate significantly reduced in color bodies, water, acetophenone, and dimethylbenzyl alcohol, and sodium.

REFERENCES:
patent: 2547938 (1951-04-01), Hall et al.
patent: 2706708 (1955-04-01), Frank et al.
patent: 2722506 (1955-11-01), Ellis
patent: 2735871 (1956-02-01), Smith
patent: 3049477 (1962-08-01), Cooke
patent: 3092587 (1963-06-01), Ester et al.
patent: 3519690 (1970-07-01), Joris et al.
patent: 4316767 (1982-02-01), Saida et al.

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