| 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/B01F25-31242
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D201-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01F25-3121
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J19-26
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D223-10 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D223-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J19-26
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01F5-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D201-04 |
| filingDate |
2004-05-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c541d7cabf9ae3b351a4cdd6ca0218b8
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_258a8aaba6285f9cfacdb91c24b4dd08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5a44124926d33b6d82b5f91b017e18e1 |
| publicationDate |
2008-04-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
EA-009914-B1 |
| titleOfInvention |
CONTINUOUS METHOD FOR PRODUCING CAPROLACTAM |
| abstract |
The invention relates to a continuous method for producing caprolactam by Beckmann rearrangement of cyclohexanone oxime, and said method comprises: a) feeding (i) oleum and (ii) cyclohexanone oxime to the first reaction mixture containing caprolactam, sulfuric acid and SO, b) feeding (iii) part of the first the reaction mixture and (iv) cyclohexanone oxime into the second reaction mixture containing caprolactam, sulfuric acid and SO, c) withdrawing a portion of the second reaction mixture, and further the method involves producing cyclohexanone oxime, which is fed to the reaction mixtures by: 1 ) preparing an organic phase containing cyclohexanone oxime dissolved in an organic solvent; 2) isolation of cyclohexanone oxime by distillation from the indicated organic phase. |
| priorityDate |
2003-05-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |