1,1,1,3,3-pentachloropropane process purge stream concentration using a secondary refluxed evaporator and secondary product recovery
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United States of America Patent
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Apr 13, 2004
Grant Date -
Oct 23, 2003
app pub date -
Apr 17, 2002
filing date -
Apr 17, 2002
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Abstract
A process for economically producing 1,1,1,3,3-pentachloropropane under conditions which preserve the activity of the catalyst. In a preferred embodiment, a two-stage distillation process is employed. In the two-stage process, the size of the equipment, temperature and vacuum are varied.
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