| 摘要 |
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, C5-C16 alkenes of formula R1-CH=CH2 or R2-CH=CH-R3, C5 to C12 cycloalkenes, which contain no branching on the C=C-bond, excess isobutene or mixtures thereof, at temperatures of 0 DEG C. to 80 DEG 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.
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