Process for the continuous preparation of di-tertiary butylcreso

Details Process for the continuous preparation of di-tertiary butylcreso Process for the continuous preparation of di-tertiary butylcreso

1976-12-06

1979-03-13

Thomas, Jr., James O.

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

Organic compounds

Oxygen containing

C07C 3906

Patent

active

041444000

ABSTRACT:
A process for the continuous preparation of a ditertiary butylcresol wherein m- or p-cresol is reacted with isobutene at elevated temperature using H.sub.2 SO.sub.4 as catalyst wherein the process is carried out stepwise by introducing stepwise into a reaction mixture comprising substantially all of the cresol to be reacted with isobutene. The total amount of isobutene introduced is introduced such that less isobutene is charged in a last stage of the process than in the first stage thereof. Thereafter the catalyst is deactivated.

REFERENCES:
patent: 3534111 (1970-10-01), Hess
Weinrich "Ind & Eng. Chem" vol. 35, pp. 264-272 (1943).

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