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US 4,397,785 AGranted
Preparation of 3,3'5,5'-tetratertiary butyl diphenoquinone
AssigneeThe Dow Chemical Company
InventorRobert M. Strom
Life of this patent
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Abstract
Oxidative coupling products of 2,6-ditertiary butyl phenol are formed by contacting the 2,6-ditertiary butyl phenol with an oxygen-containing gas in the presence of a heterogeneous oxidative coupling catalyst in methanol.
Claims6
A process for producing 3,3',5,5'-tetratertiary butyl diphenoquinone comprising contacting 2,6-ditertiary butyl phenol with a heterogeneous oxidative coupling catalyst in the presence of an oxygen-containing gas in a liquid reaction medium comprising methanol.
Dependencies are inferred from the claim text.