| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_28cfcb5cd6fa763097b146b72286577a |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D2325-022 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D69-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D69-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D69-085
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D61-14
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J3-091
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D67-0011
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D71-68 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08J3-09
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D53-22
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D69-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D67-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D71-68 |
| filingDate |
1987-08-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f702dc489bc644001c8aeda65636549f
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_46c47c1463b05b4688f8d050d1f1e504
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d66831973f71542a3fcedc9bd844fa67
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ee976ea1d84d624d91bed121cf8a31d9
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c4a4de098a0ef20856e639c119cea198
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_02503a6dd8baa3979bd2c9c95a8a317c |
| publicationDate |
1988-03-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
EP-0259288-A2 |
| titleOfInvention |
Process and dope for forming asymmetric gas separation membranes having graded density skins |
| abstract |
A process and dope are disclosed for forming high free volume, asymmetric gas separation membranes having graded density skins and macrovoid-free morphology from a solvent system comprising a Lewis acid, Lewis base, and a Lewis acid:base complex which dissolve hydrophobic polymers. The dopes have high total solids, high viscosity and low coagulation (g) values which enhance rapid gelation without the formation of macrovoids and which minimize densification. The dopc solvent system complexes are readily disassociated by the coagulation medium and the component molecules are miscible in the medium which provides for rapid desolvation of the formed membrane thus providing a membrane having low residual solvent retention. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0420832-A2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-1842581-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0323431-A2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0420832-A3
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0323431-A3 |
| priorityDate |
1986-08-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |