| abstract |
The present invention relates to a process for the continuous production of salt solutions, in particular for the production of hexamethylenediamine adipate, and to an apparatus for carrying out such a process. According to the present invention, in the first step, a substoichiometric amount of alkanediamine reacts in water in the ratio to alkanedicarboxylic acid, and in the subsequent second step, alkanediamine is compensated, It is proposed that the stoichiometric ratio is adjusted by measuring the pH value at a constant temperature. [Selection figure] None |