Abstract: A process is provided for the removal of water from a mixture of ethylene diamine and water and for the preparation of ethylene diamine having a water content below the azeotropic equilibrium water content between ethylene diamine and water, by distilling the mixture in the presence of a distillation adjuvant comprising one or more compounds selected from the group consisting of piperazine, diethylene, triamine, hydroxethyl ethylene diamine, and aminoethyl piperazine. The adjuvant can be removed later if desired.
Type:
Grant
Filed:
June 13, 1975
Date of Patent:
June 28, 1977
Assignee:
Beroi Kemi AB
Inventors:
Jan Tore Tornquist, Karl Goran Dahlberg