Distillation: processes – separatory – With measuring – testing or inspecting – Of temperature or pressure
Reexamination Certificate
2006-12-12
2006-12-12
Manoharan, Virginia (Department: 1764)
Distillation: processes, separatory
With measuring, testing or inspecting
Of temperature or pressure
C203S049000, C203S075000, C203S077000, C203S078000, C203S080000, C203SDIG025, C540S605000, C540S612000, C558S452000, C564S437000, C564S497000
Reexamination Certificate
active
07147757
ABSTRACT:
The invention relates to a method for separating by distillation a portion or the entirety of an azeptine derivative (III), which is selected from the group consisting of aminohexylidene imine, tetrahydroazepine, hexylhexahydroazepine and of aminohexylhexahydroazepine, out of a mixture (II) containing an azepine derivative (III) and an amine (I). The inventive method is characterized in that the distillation is carried out with a maximum bottom temperature of 150° C.
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Luyken Hermann
Ohlbach Frank
Basf Aktiengesellschaft
Manoharan Virginia
Novak Druce & Quigg LLP
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