摘要 |
The invention relates to a method for removing, by distillation, 6-aminocapronitrile from mixtures that contain 6-aminocapronitrile, adipodinitrile and hexamethylenediamine, by a) removing the hexamethylenediamine from the mixture while obtaining a mixture (I) that has a hexamethylenediamine content of less than 1 wt.- %, b) removing completely or partially the 6-aminocapronitrile from mixture (I) while obtaining a mixture (II) whose content in substances that have a higher boiling point as 6-aminocapronitrile under distillation conditions and that cannot be formed by dimerization reactions when 6-aminocapronitrile is thermally treated is less than 1 wt.- %, and c) completely or partially removing from mixture (II) the hexamethylenediamine that might be present while obtaining a mixture (IV) whose hexamethylenediamine content is higher than that of mixture (II), and a mixture (V) whose hexamethylenediamine content is lower than that of mixture (II).
|
申请人 |
BASF AKTIENGESELLSCHAFT;LUYKEN, HERMANN;OHLBACH, FRANK;FISCHER, ROLF-HARTMUTH;MELDER, JOHANN-PETER;BASSLER, PETER;ANSMANN, ANDREAS;ACHHAMMER, GUENTHER |
发明人 |
LUYKEN, HERMANN;OHLBACH, FRANK;FISCHER, ROLF-HARTMUTH;MELDER, JOHANN-PETER;BASSLER, PETER;ANSMANN, ANDREAS;ACHHAMMER, GUENTHER |