| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_70ec63d39d6704bacc5c7068c93ded43 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C7-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C7-005 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C1-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C7-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C7-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C67-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C11-18 |
| filingDate |
1980-07-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6efcf466ad3def360be6299568329cb9
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_34cac5998ee2a75a2588855f51da1a2c
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_3713473340c4696772dc31f8c900665e
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f7543ee673893a61b6dacaf2ab649325 |
| publicationDate |
1981-02-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
EP-0023370-A1 |
| titleOfInvention |
Process for the recovery of isoprene, and isoprene so recovered |
| abstract |
Recovering isoprene from a C 5 hydrocarbon fraction by (i) distillation (D,) to remove hydrocarbons boiling below isoprene; (ii) a liquid-liquid extraction stage (E 1 ) using a sulfolane to form a first raffinate phase rich in normal-pentane and pentenes and a sulfolane extract phase rich in isoprene, subjecting the sulfolane extract phase to liquid-liquid extraction (E 2 ) using a counter-solvent, which is a C 6 or higher alkane, as the extractant to form a second raffinate phase comprising mainly the sulfolane and a counter-solvent extract phase rich in isoprene and distilling (D z ) the counter-solvent extract phase to remove the counter-solvent therefrom; (iii) distillation (0 3 ) to remove hydrocarbons boiling above isoprene, provided stage (iii) does not precede stage (ii). |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-103068773-B
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-103068773-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8246815-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-100458361-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4629533-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2012021232-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5525325-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4647344-A |
| priorityDate |
1979-07-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |