Separation of methoxy isopropyl amine of methoxy isopropyl amine / water azeotropes.

摘要

A process for the recovery of methoxyisopropylamine from the reaction of methoxyisopropanol and ammonia under amination conditions. Water is produced as a byproduct and in the distillation separation an azeotrope is formed which includes about 14% water and 86% methoxyisopropylamine. The improvement for enhancing separation of the azeotrope includes initially distilling the mixture of methoxyisopropylamine, methoxyisopropanol and water under sufficient elevated pressure wherein an azeotrope of water and methoxyisopropylamine overhead and an essentially water free bottoms of methoxyisopropylamine and methoxyisopropanol are formed. The overhead from this initial distillation column is charged to a second distillation column operated at reduced pressure wherein an organic free bottoms containing primarily water is obtained. The bottoms from the elevated pressure distillation column is fractionated in a product column and product methoxyisopropylamine is recovered as an overhead and methoxyisopropanol as a bottoms.PPThe overheads from the lower pressure distillation column is returned to the elevated pressure column and all of the methoxyisopropylamine is recovered.