http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5907057-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_376f5e0a3ba9745609c699d755cfd622 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C227-08 |
| classificationIPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C229-24 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C227-08 |
| filingDate | 1998-05-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 1999-05-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_992dce7f0232d0fcbcaa9aa732e06fde http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_3eedd17d27ac9b33ec8f4af1bd910bb4 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_82501262ba73f9af7136abae2bfe3ad9 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_89d0efe116b2fe29fbb5b62a5dd1a841 |
| publicationDate | 1999-05-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | US-5907057-A |
| titleOfInvention | Production of D,L-aspartic acid |
| abstract | The present invention is directed to a method for the production of D,L-aspartic acid. The method comprises reacting an unsaturated dicarboxylic acid or anhydride, such as, maleic acid, fumaric acid, maleic anhydride, or mixtures thereof, with excess aqueous ammonia at an elevated temperature and pressure for a time sufficient to produce diammonium D,L-aspartate. The produced diammonium D,L-aspartate is then neutralized to D,L-aspartic acid. Excess unreacted ammonia and various by-products may be recycled and re-used in the method, thereby minimizing waste and reducing cost. The produced D,L-aspartic acid may be subsequently used to make polyaspartic acid. |
| priorityDate | 1996-06-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 58.