Phenol alkylation process
AssigneeEthyl Corporation
InventorsSteven L. Wiker, S. Wendell Holmes, Jr., Dixie E. Goins
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Abstract
A process of ortho-alkylating arylhydroxides, e.g., phenol, by passing a mixture of arylhydroxide, olefin and an inert hydrocarbon diluent in the liquid phase through a bed of activated alumina at an elevated temperature and pressure. Conversion and selectivity is improved over that obtained without the diluent.
Claims20
A process for mono-orthoalkylating an arylhydroxide having an unsubstituted ring position ortho with respect to the hydroxy group, said process comprising continuously passing a moxture of said arylhydroxide and olefin in a mole ratio of 0.8-10 moles of olefin per mole of arylhydroxide and an inert hydrocarbon diluent in an amount such that the arylhydroxide:diluent ratio is about 10-90 weight percent arylhydroxide and 90-10 weight percent diluent in the liquid phase through an activated alumina bed at an elevated temperature of 120.degree.-200.degree. C. and under a pressure in the range of 50-2000 psig which is also sufficient to maintain said arylhydroxide, hydrocarbon diluent and olefin in the liquid phase.
Dependencies are inferred from the claim text.