http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5741681-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_6c8d4dc7bd1a30d8fda907fceaeb4e69 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C12P13-20 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C12P13-20 |
| filingDate | 1995-12-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 1998-04-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a7473fc579262d489681712d7858a88e http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ddbd5dd1b09494066c552b9e0a90fe7d http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_aa34e077eb31e7afeb5df0c29d296bca http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_701152405a21f1b203d09d91842871c1 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_3bbeb66010fddd4f60e595efbde49afd |
| publicationDate | 1998-04-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | US-5741681-A |
| titleOfInvention | Method for producing L-aspartic acid |
| abstract | PCT No. PCT/JP95/02526 Sec. 371 Date Aug. 8, 1996 Sec. 102(e) Date Aug. 8, 1996 PCT Filed Dec. 8, 1995 PCT Pub. No. WO96/17950 PCT Pub. Date Jun. 13, 1996L-aspartic acid is produced by repeating the following respective steps: (1) a reaction step of producing ammonium L-aspartate from an aqueous solution containing monoammonium maleate in accordance with an isomerization reaction and an enzyme reaction caused by aspartase in the presence of ammonia; (2) an ammonia-eliminating step of converting substantially all produced ammonium L-aspartate into monoammonium salt by distilling or stripping a reaction solution obtained in the step (1); (3) a crystallization step of crystallizing L-aspartic acid and producing monoammonium maleate from a solution obtained in the step (2) by adding maleic acid, maleic anhydride or both; (4) a solid-liquid separation step of separating L-aspartic acid crystals precipitated in the step (3) from a mother liquor containing monoammonium maleate; and (5) a recycle step of supplying the mother liquor containing monoammonium maleate obtained in the step (4) to the step (1) to be used as a raw material for the reaction. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6320061-B1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6670505-B1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7294672-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6280980-B1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5952206-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2004192837-A1 |
| priorityDate | 1994-12-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 76.