Back to results
US 8,802,884 B2Granted
Process for producing aromatic carbonates
AssigneeShell Oil Company
InventorGaro Garbis Vaporciyan
Life of this patent
Estimating the term…
Abstract
This invention provides a method for producing an alkylaryl carbonate comprising: a) contacting a stream comprising an aromatic hydroxy compound and a stream comprising a dialkylcarbonate in a reactive distillation column containing a bed of heterogeneous transesterification catalyst, the bed having a top and a bottom; and b) withdrawing a product stream comprising the alkylaryl carbonate from the reactive distillation column wherein the aromatic hydroxy compound is fed to the column at a first feed point located above the top of the catalyst bed.
Claims12
A method for producing an alkylaryl carbonate comprising:
- a) contacting a stream comprising an aromatic hydroxy compound and water, and a stream comprising a dialkylcarbonate in a reactive distillation column containing a bed of heterogeneous transesterification catalyst, the bed having a top and a bottom;
- and
- b) withdrawing a product stream comprising the alkylaryl carbonate from the reactive distillation column
- wherein the aromatic hydroxy compound is fed to the column at a first feed point located at least one theoretical tray above the top of the catalyst bed;
- wherein the aromatic hydroxy compound has a water content of less than 0.5 wt % when it first contacts the top of the heterogeneous transesterification catalyst bed.
2 more elements
Dependencies are inferred from the claim text.