Process for recovering dimethyl terephthalate
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United States of America Patent
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Mar 26, 1996
Grant Date -
N/A
app pub date -
Aug 7, 1995
filing date -
Aug 7, 1995
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A process for recovering dimethyl terephthalate (DMT) comprises the steps of: providing a dimethyl terephthalate stream including dimethyl terephthalate, glycols, and coordination compounds; acidifying the coordination compounds to disassociate the ligands from the metalions; separating the ligands from the metalions; separating the dimethyl terephthalate from the glycols; and recovering the dimethyl terephthalate. Additionally, the process may include the step of basifying the metalions to precipitate the metal; and recovering the metal.
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