Process for the preparation of highly pure triethylene diamine

Details Process for the preparation of highly pure triethylene diamine Process for the preparation of highly pure triethylene diamine

2006-12-19

2006-12-19

Tucker, Zachary C. (Department: 1624)

Organic compounds -- part of the class 532-570 series

Organic compounds

Nitrogen attached directly or indirectly to the purine ring...

Reexamination Certificate

active

07151177

ABSTRACT:
Highly pure triethylenediamine is obtained by a process in which triethylenediamine is freed from high boilers and then the triethylenediamine is vaporized from the mixture thus obtained and is passed into a liquid solvent. The process makes it possible in particular to obtain highly pure solutions of triethylenediamine. Crystallization is generally unnecessary.

REFERENCES:
patent: 3993651 (1976-11-01), Keating
patent: 6627756 (2003-09-01), Riechers et al.
patent: 1 070 717 (2000-07-01), None
Derwent 2002-734027/80.
Derwent 2001-193111/20.

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