Ortho-alkylation catalysts based on magnesium and prepared by calcining in presence of feed mixture of reactants
AssigneeGeneral Electric Company
InventorsJames G. Bennett, Freddie L. Tungate
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Abstract
Ortho-alkylated phenols are prepared by reacting phenol unsubstituted in at least one ortho position with an alcohol in the presence of an ortho-alkylation catalyst consisting of magnesium carbonate, magnesium hydroxide or a mixture of both. The catalyst is used in the absence of a promoter compound and with or without polymeric binder.
Claims5
A catalyst composition for the ortho-alkylation of a phenol consisting of a calcination residue derived from heating at a temperature sufficient to produce calcination , said temperature being between 400.degree. and 460.degree. C., a magnesium-containing material selected from the group consisting of magnesium carbonate, basic magnesium carbonate, magnesium hydroxide and mixtures of any of the foregoing, in the presence of a vaporized ortho-alkylation feed mixture comprising a phenolic compound and an alkyl alcohol, said heating being carried out in situ in an ortho-alkylation reactor.
Dependencies are inferred from the claim text.