| Predicate |
Object |
| 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/C07D223-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D201-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01F25-3121 |
| classificationIPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07B61-00 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01F5-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D223-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D201-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J19-26 |
| filingDate |
2004-05-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate |
2007-07-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
JP-2007520445-A |
| titleOfInvention |
Method for preparing caprolactam |
| abstract |
The present invention relates to a method for preparing caprolactam by Beckmann rearrangement of cyclohexanone oxime by supplying cyclohexanone oxime to a reaction mixture containing (i) sulfuric acid, (ii) SO 3 and (iii) caprolactam. The SO 3 content of the reaction mixture is 9-20% by weight and the molar ratio M of the reaction mixture, defined as (n SO 3 + n H 2 SO 4 ) / n cap , is 1-1.4, where n SO 3 = SO 3 amount of mol units in the reaction mixture, n H2SO4 = H 2 SO 4 amount of mol units in the reaction mixture, n cap = caprolactam amount of mol units in the reaction mixture. |
| priorityDate |
2003-05-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |