Process for the production of cyclohexyladipates and adipic acid
AssigneeE. I. Du Pont de Nemours and Company
InventorsWilliam C. Drinkard, Gerald C. Grunewald, Ronald Reimer
Life of this patent
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Abstract
Cyclohexyladipates are formed in a staged reactor, e.g. a reactive distillation column. A mixture containing a major amount of benzene and a minor amount of cyclohexene is fed to the lower portion of the reaction zone and adipic acid is fed to the upper portion of the reaction zone, cyclohexyladipates are formed and removed from the lower portion of the reaction zone and benzene is removed from the upper portion of the reaction zone. The reaction zone also contains an acid catalyst.
Claims9
A process for the production of cyclohexyladipates in a staged reaction zone containing an acid catalyst, said staged reaction zone having a upper portion and a lower portion, said staged reaction zone having a temperature above about 100 degrees C. and at a pressure greater than 20 psig, which comprises (a) feeding to the lower portion of the staged reaction zone a mixture containing a major amount of benzene, and a minor amount of cyclohexene, (b) feeding to the upper portion of the staged reaction zone, adipic acid, (c) removing cyclohexyladipates from the lower portion of the staged reaction zone, and (d) removing benzene from the upper portion of the staged reaction zone.
Dependencies are inferred from the claim text.