| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_5393d655670d61ef5bf83d3ed6bf3fa5
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_3c9b9b70e6cfbc4c780e77facb6fef60 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C7-144
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C9-10 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C5-22 |
| filingDate |
2007-09-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2e211e936a6357c1dff7d93109875e23
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_595d3c16497cbbc11a2dd701239a1a1b |
| publicationDate |
2009-03-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-2009069617-A1 |
| titleOfInvention |
Processes for the Isomerization of Normal Butane to Isobutane |
| abstract |
In a normal butane isomerization process where the isomerization effluent ( 108, 114 ) is fractionated in a deisobutanizer ( 116 ) operated such that a lower boiling fraction ( 118 ) is provided containing at least 80 mass-% isobutane and a higher boiling fraction ( 122 ) containing normal butane and at least 10 mass-% isobutane. The higher boiling fraction ( 122 ) is contacted with a selectively permeable membrane ( 124 ) to provide a permeate ( 126 ) containing normal butane-containing and a retentate ( 128 ) containing at least 80 mass-% isobutane. The preferred membranes are sieving membranes having a C 4 Permeate Flow Index of at least 0.01 and a C 4 Permeate Flow Ratio of at least 1.25:1. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-11306047-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10926226-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2021211604-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10953369-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-2609807-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9051230-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2012271080-A1 |
| priorityDate |
2007-09-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |