Chemistry of carbon compounds – Miscellaneous organic carbon compounds – C-metal
Patent
1978-06-12
1980-11-11
Breitenstein, G. T.
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
C-metal
528335, C07C 8714
Patent
active
042332346
ABSTRACT:
A process for the continuous preparation of an aqueous solution of a salt of an alkanedicarboxylic acid of 6 to 12 carbon atoms and an alkanediamine of 6 to 12 carbon atoms by reacting the particular alkanedicarboxylic acid with the particular alkanediamine in an aqueous solution of the salt to be prepared. The aqueous salt solution is recycled from a first mixing zone via a transport zone and a second mixing zone into the first mixing zone, liquid alkanediamine and an aqueous solution of alkanedicarboxylic acid are introduced between the first and second mixing zones. Less than the equivalent amount of alkanediamine is introduced, the remaining amount of liquid alkanediamine is added after the second mixing zone, and aqueous salt solution is taken off the first mixing zone at the rate at which it is formed. The salt prepared is used for the manufacture of a nylon.
REFERENCES:
patent: 2130947 (1938-09-01), Carothers
patent: 3294758 (1966-12-01), Gabler
patent: 3294759 (1966-12-01), Gabler
patent: 3952051 (1976-04-01), Ogawa et al.
Dietl Ernst
Duffner Paul
Pilz Georg
Rotzoll Rudi-Heinz
Thiel Gerhard
BASF - Aktiengesellschaft
Breitenstein G. T.
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