| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_0efa077d881a96aeb1e29b21ef1bbb58 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C229-24
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C227-06 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C229-24
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C227-06 |
| filingDate |
1994-09-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_32959b721bbb74ef18c76d4375b10815
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e5824ec2b703f854046a9b60fdd7b49c
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f7a8ef85ae10e02de9a1b294d5d5e582
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6981e1877cd797eecb09a5b17677e738
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_75ec76cafdb86357916820e877f5e5fb |
| publicationDate |
1996-03-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
DE-4434172-A1 |
| titleOfInvention |
Process for the preparation of D, L-aspartic acid |
| abstract |
A process is disclosed for preparing D,L-aspartic acid by heating aqueous solutions of ammonium salts of the maleic acid. The molar ratio of maleic acid to ammonia ranges from 1:1 to 1:50. The process is carried out at temperatures from 60 to 250 DEG C and pressures of at least 1 bar. The pressure applied during the reaction is adjusted to ensure that the reaction mixture is almost completely present in liquid phase. Excess ammonia is removed and the reaction solution is acidified so as to release D,L-aspartic acid, which is then isolated. |
| priorityDate |
1994-09-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |