Process for the manufacture of di-t-butylperoxy ketals

Details Process for the manufacture of di-t-butylperoxy ketals Process for the manufacture of di-t-butylperoxy ketals

1975-07-21

1977-10-04

Thomas, Jr., James O.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260610SK, 260610R, C07C17906

Patent

active

040524647

ABSTRACT:
Di-t-butylperoxy ketals are prepared from t-butyl hydroperoxide and the appropriate ketone in the presence of from 1 to 10 times the weight of ketone of ethylbenzene employing an acidic catalyst. Water is removed by azeotropic distillation with ethylbenzene and excess t-butyl hydroperoxide is subsequently removed by azeotropic distillation of additional ethylbenzene to provide a solution of the di-t-butylperoxide ketal in ethylbenzene which is particularly desirable as an initiator for styrene polymerization.

REFERENCES:
patent: 2455569 (1948-12-01), Dickey
patent: 2537853 (1951-01-01), Pezzaglia
patent: 3308163 (1967-03-01), McKellin
patent: 3472901 (1969-10-01), Tijssen et al.

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