| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_09106e43404d6b1977281e2561a126e1 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D2323-08 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D71-62
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D53-228
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D67-0093 |
| classificationIPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D69-00 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D71-64
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D71-28 |
| filingDate |
2009-09-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
2010-10-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ebe8c599a02234f9707607495e50ae26
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a1c6c06bd7406ea9d17cfa8b192c4ac9
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_baf5bd3ef6995070823e94ebe2beb0d1
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1c5578d46678c5ff33bba8cf948252c0
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d4222a85f0147090ecf17039f8b65a0f |
| publicationDate |
2010-10-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-7810652-B2 |
| titleOfInvention |
Method to improve the selectivity of polybenzoxazole membranes |
| abstract |
The present invention discloses a novel method to improve the selectivities of polybenzoxazole (PBO) membranes prepared from aromatic polyimide membranes for gas, vapor, and liquid separations. The PBO membranes that were prepared by thermal treating aromatic polyimide membranes containing between 0.05 and 20 wt-% of a poly(styrene sulfonic acid) polymer. These polymers showed up to 95% improvement in selectivity for CO2/CH4 and H2/CH4 separations compared to PBO membranes prepared from corresponding aromatic polyimide membranes without a poly(styrene sulfonic acid) polymer. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8575414-B2 |
| priorityDate |
2009-09-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |