Process for the preparation of pure triethylenediamine (TEDA)
AssigneeBASF SE
InventorsOrtmund Lang, Bernd Rumpf, Matthias Frauenkron, Dirk Funhoff, Thomas Manderbach, Bernd Stein
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Abstract
The invention relates to the preparation of pure triethylenediamine (TEDA) by evaporating TEDA from the mixture comprising a solvent or diluent, where the solvent or diluent has a boiling point at atmospheric pressure in the range from 175 to 250° C., passing the vapor-form TEDA into a liquid solvent, and subsequently crystallizing the TEDA out of the resultant solution.
Claims13
A process for the preparation of a solution of pure triethylenediamine (TEDA), which comprises evaporating TEDA from a mixture comprising a solvent or diluent, where the solvent or diluent has a boiling point at atmospheric pressure in the range from 175 to 250° C., and introducing the vapor-form TEDA into a liquid solvent.
Dependencies are inferred from the claim text.