Process for the production of 2,6-di-tert-butylphenol

Details Process for the production of 2,6-di-tert-butylphenol Process for the production of 2,6-di-tert-butylphenol

1990-12-11

1992-02-25

Lone, Werren B.

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

Organic compounds

Oxygen containing

568784, 568785, 568794, C07C 3711, C07C 3714

Patent

active

050915940

ABSTRACT:
For producing 2,6-di-tert-butylphenol and products therefrom, utilizing small quantities of aluminum tris-(2-tert-butylphenolate as a catalyst by reaction of 2-tert-butylphenol with isobutene in the liquid phase, the reaction is performed in the presence of diluents such as liquid saturated aliphatic or cycloaliphatic hydrocarbons, C.sub.5 -C.sub.16 alkenes of formula R.sub.1 --CH.dbd.CH.sub.2 or R.sub.2 --CH.dbd.CH--R.sub.3, C.sub.5 to C.sub.12 cycloalkenes, which contain no branching on the C.dbd.C-bond, excess isobutene or mixtures thereof, at temperatures of 0.degree. C. to 80.degree. C., pressures of 0.1 to 11 bars and catalyst amounts of 0.005 to 5 mol %, based on 2-tert-butylphenol. High conversions are obtained with few undesirable trialkylated products.

REFERENCES:
patent: 3355504 (1967-11-01), Coffield et al.
patent: 4631349 (1986-12-01), Goins et al.
patent: 4870215 (1989-09-01), Wilker et al.

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