Transesterification process
AssigneeGreat Lakes Chemical Corporation
InventorJonathan Simon Hill
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Abstract
A process for the preparation of a phosphate ester is disclosed. A triaryl phosphate is reacted with an alcohol in the presence of a catalytic quantity of a base to produce the phosphate ester product. The base has a base strength of less than 11, and is preferably potassium fluoride or potassium carbonate. Trialkyl phosphates, dialkyl monoaryl phosphates, monoalkyl diaryl phosphates, and mixtures of these compounds can be produced by this process.
Claims32
A process for the production of a phosphate ester product comprising a trialkyl phosphate, a dialkyl monoaryl phosphate, an alkyl diaryl phosphate, or a mixture thereof, the process comprising transesterifing a triaryl phosphate with an aliphatic alcohol in the presence of a catalytic quantity of a base having a base strength of less than 11, in which the base is a hexanoate, an amine, an acetate, a carbonate, a bicarbonate, a phosphite, a hypophosphite, a phosphate, a tungstate, a fluoride, or an oxide.
A process for the production of a phosphate ester product comprising a trialkyl phosphate, a dialkyl monoaryl phosphate, an alkyl diaryl phosphate, or a mixture thereof, the process comprising transesterifing a triaryl phosphate with an aliphatic alcohol in the presence of a catalytic quantity of a base having a base strength of less than 11 in which the process is carried out in the presence of a Lewis acid co-catalyst.
Dependencies are inferred from the claim text.