| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_a3ae63500ac7f6553fdf267a475ed01c |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D201-16 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D201-16 |
| filingDate |
1975-08-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
1977-05-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_79f6cb81669f8b588b000856c6b2779c
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a85b8841da6f9481c70df4c5072c9ed1 |
| publicationDate |
1977-05-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-4021422-A |
| titleOfInvention |
Process for the recovery of ε-caprolactam from reaction mixture of ε-caprolactam and sulphuric acid |
| abstract |
In commercial processes for producing epsilon-caprolactam, the caprolactam product is in admixture with sulfuric acid. An improved process for removing sulfuric acid from the caprolactam results from treating the admixture with ammonia at superatmospheric pressure. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2012019674-A3
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2013053377-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EA-022192-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-102971289-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2012019674-A2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4133810-A |
| priorityDate |
1974-08-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |