| 摘要 |
The present invention concerns a process for the preparation of a terephthalic acid di-ester by the esterification of TPA with an alcohol at normal pressure and temperature. This embodiment comprises contacting TPA with an alcohol in the presence of a catalyst in a reaction zone, wherein the alcohol comprises at least one of a C6 to C10 alcohol, the pressure is at atmospheric pressure and the temperature is maintained at about 180° to 270°C. Moreover, this process employs a reactor fitted with a fractionation column for removing water. The process according to the present invention provides the desired terephthalic acid diester product at good reaction rates with high conversions of the TPA reactant with no observable foaming problems.
|
