EP 0000158 B1 19811014 - PROCESS FOR THE CONTINUOUS PRODUCTION OF AQUEOUS SOLUTIONS OF SALTS OF ALKANE DICARBOXYLIC ACIDS WITH ALKANE DIAMINES
Title (en)
PROCESS FOR THE CONTINUOUS PRODUCTION OF AQUEOUS SOLUTIONS OF SALTS OF ALKANE DICARBOXYLIC ACIDS WITH ALKANE DIAMINES
Publication
Application
Priority
DE 2728818 A 19770627
Abstract (en)
[origin: US4233234A] 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.
IPC 1-7
IPC 8 full level
C07C 51/00 (2006.01); C07C 51/41 (2006.01); C07C 55/14 (2006.01); C07C 55/02 (2006.01); C07C 67/00 (2006.01); C07C 209/00 (2006.01); C07C 211/09 (2006.01)
CPC (source: EP US)
C07C 51/412 (2013.01 - EP US); C07C 209/68 (2013.01 - EP US)
C-Set (source: EP US)
Designated contracting state (EPC)
BE DE FR GB NL
DOCDB simple family (publication)
EP 0000158 A1 19790110; EP 0000158 B1 19811014; DE 2728818 A1 19790104; DE 2728818 B2 19790830; DE 2728818 C3 19800508; DE 2861152 D1 19811224; IT 1096589 B 19850826; IT 7824770 A0 19780620; JP S5412317 A 19790130; JP S6223736 B2 19870525; US 4233234 A 19801111
DOCDB simple family (application)
EP 78100176 A 19780616; DE 2728818 A 19770627; DE 2861152 T 19780616; IT 2477078 A 19780620; JP 7659278 A 19780626; US 91492578 A 19780612