| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_adb0e564374fedf34b36103d36e6455a |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J2219-00164 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J19-26
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01F25-31242
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D201-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D223-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01F25-3121 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D201-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01F5-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J19-26 |
| filingDate |
2004-05-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
2008-04-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5a44124926d33b6d82b5f91b017e18e1
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_3c3669c5808ca1a9a56ecd78b6c5d735
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b999b05c36043a41e2f30cd39dd8a02f |
| publicationDate |
2008-04-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-7351820-B2 |
| titleOfInvention |
Process for preparing caprolactam by Beckmann rearrangement |
| abstract |
The invention relates to a process for preparing caprolactam by Beckmann rearrangement of cyclohexanone oxime by feeding cyclohexanone oxime to a reaction mixture comprising (i) sulfuric acid (ii) SO 3 and (iii) caprolactam , wherein the SO 3 content of the reaction mixture is between 9 and 20 wt. % and the molar ratio M of the reaction mixture defined as (n so3 +n H2SO4 )/n cap is between 1 and 1.4, wherein n so3 =quantity of SO 3 in reaction mixture, in mol n so3 =quantity of H 2 SO 4 in reaction mixture, in mol n cap =quantity of caprolactam in reaction mixture, in mol. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9073867-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2012141997-A1 |
| priorityDate |
2003-05-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |