EP 1009733 A1 20000621 - PROCESS FOR PREPARING ASPARTIC ACID FROM AMMONIUM ASPARTATE, AND CONTINUOUS PROCESS FOR PREPARING POLYSUCCINIMIDE INVOLVING SUCH PROCESS
Title (en)
PROCESS FOR PREPARING ASPARTIC ACID FROM AMMONIUM ASPARTATE, AND CONTINUOUS PROCESS FOR PREPARING POLYSUCCINIMIDE INVOLVING SUCH PROCESS
Title (de)
VERFAHREN ZUR HERSTELLUNG VON ASPARAGINSÄURE AUS AMMONIUM ASPARTAT, UND KONTINUIERLICHES VERFAHREN ZUR HERSTELLUNG DES POLYSUCCINIMIDS MIT DIESEM VERFHAREN
Title (fr)
PROCEDE DE PREPARATION D'ACIDE ASPARTIQUE A PARTIR D'ASPARTATE D'AMMONIUM ET PROCESSUS DE PREPARATION EN CONTINU DE POLYSUCCINIMIDE FAISANT INTERVENIR CE PROCEDE
Publication
Application
Priority
- EP 98946382 A 19980819
- EP 9805268 W 19980819
- EP 97202722 A 19970904
Abstract (en)
[origin: EP0902010A1] The invention relates to a process for the (continuous) preparation of aspartic acid by decomposition of ammonium aspartate in which a concentrated aqueous solution of ammonium aspartate is constantly introduced into a diluent in which water has a low solubility, which diluent is maintained at a temperature at which ammonium aspartate decomposes into aspartic acid and ammonia, and in which the water and the formed ammonia are continuously removed. The invention also relates to a (continuous) process for preparing polysuccinimide starting from fumaric or maleic acid and ammonia involving said process for preparing aspartic acid from ammonium aspartate. <IMAGE>
IPC 1-7
IPC 8 full level
C07C 227/18 (2006.01); C07C 229/24 (2006.01); C08G 69/10 (2006.01); C08G 73/10 (2006.01)
CPC (source: EP)
C07C 227/18 (2013.01); C08G 69/10 (2013.01); C08G 73/1092 (2013.01)
Citation (search report)
See references of WO 9911603A1
Designated contracting state (EPC)
AT BE CH DE DK ES FR GB IE IT LI MC NL SE
DOCDB simple family (publication)
EP 0902010 A1 19990317; AU 9344498 A 19990322; EP 1009733 A1 20000621; JP 2003524576 A 20030819; WO 9911603 A1 19990311
DOCDB simple family (application)
EP 97202722 A 19970904; AU 9344498 A 19980819; EP 9805268 W 19980819; EP 98946382 A 19980819; JP 2000508644 A 19980819