http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-S6445349-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_129e393582e6bdf4029baf2206522f45 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C229-26 |
| filingDate | 1987-08-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_3670d32b705c6276493acc7297154b3a http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7a3aa3734c46f451f4f8829b4189879d http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_3b036025edb87044b7d1a7acd599adbe |
| publicationDate | 1989-02-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-S6445349-A |
| titleOfInvention | Production of dl-lysine |
| abstract | PURPOSE:To obtain DL-lysine useful as a basic salt-forming agent for an acidic drug such as aspirin, with economical means in high purity, by racemizing an optically active lysine and treating with a free acid. CONSTITUTION:1mol. (2 equivalent) of an optically active lysine is racemized at 130-200 deg.C by using 0.4-5 times weight of water in the presence of 1-2 equivalent of an acid (e.g. hydrochloric acid). To improve the quality of the product, the racemization reaction liquid is added with 2.1-3 equivalent [based on 1mol. (2 equivalent) of lysine] of an acid (e.g. hydrochloric acid) and treated with the acid at 120-180 deg.C. If necessary, the reaction product is subjected to activated carbon treatment for removing coloring impurities, ion exchange treatment to remove the acid and obtain free DL-lysine, etc. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-106187799-A |
| priorityDate | 1987-08-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 24.