| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_c0bdbaa7d1404425011d1b246ed5628a |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D2323-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D2323-12
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D71-54
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y10S264-62
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y10S264-48 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G18-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D67-0009
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C10G31-11
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D67-0011
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D71-76
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J5-18
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D69-12
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D69-08 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C10G31-11
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D71-54
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B32B5-18
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08J9-28
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D67-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G18-10 |
| filingDate |
1987-10-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
1989-05-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_3ee308eb1e7f70fec95ce507161b4115
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_bbc5604060c791c18bc45c9282575868
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ff63c84130527809a2688be527c7ea64 |
| publicationDate |
1989-05-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-4828773-A |
| titleOfInvention |
Highly aromatic anisotropic polyurea/urethane membranes and their use for the separation of aromatics from non-aromatics |
| abstract |
An anisotropic elastomeric membrane preferably made from polyurea/urethane has been prepared. These anisotropic membranes are made from the corresponding polymeric material by preparing the polymeric material in a good solvent containing less than 5 vol % non-solvent, producing a film of the polymer solution on a support with a maximum pore size less than 20 microns, subjecting the film to conditions such that the solvent vapor pressure-time factor is 1000 mm Hg-min. or less, preferably 200 mm Hg-min or less, most preferably approaching 0 mm Hg-min and quenching the membrane film in a non-solvent yielding a three-layered anisotropic membrane. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5120900-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5254795-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5430224-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10737220-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10478778-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2006289352-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0457981-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7638053-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10618008-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9056283-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5095170-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2003150795-A1 |
| priorityDate |
1987-10-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |