Patent ID: 9561999
Date: 2017-02-07
CPC Classifications: B01J,C07C

Claim:
1. A method for the continuous production of an aqueous solution of salts by conversion of alkane dicarboxylic acids with 6 to 12 carbon atoms and alkane diamines with 6 to 12 atoms, having the following steps: a) a defined quantity of alkane dicarboxylic acid is metered as solid material through a metering device with a gravimetric throughflow measurement into a first reactor via at least one first feed point and a substoichiometric quantity of undiluted alkane diamine is metered in at at least a second feed point, and also, at the same time, water at at least one third feed point of the first reactor, for the production of an aqueous salt solution in the reactor, b) the formed salt solution is transferred continuously into a subsequently connected second reactor and c) making-up with the alkane diamine is effected in the second reactor, the stoichiometric ratios in the first and second reactor being adjusted by a pH value measurement at a constant temperature.