http://rdf.ncbi.nlm.nih.gov/pubchem/patent/IT-1252299-B
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_69dd830162aa7d47bb6d4faf9117a797 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G- |
| filingDate | 1991-11-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 1995-06-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2a75be0349f98cedf71ee37df11e3912 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a0056f67936e620c78e130389e5a21cb http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4717da3934c7264e254b8f75aff3331d http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_41cf75c9cedbfd6f7b21b5e44b31d2aa http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c5f41c0639b2c07a8a67686d3f79f8ad |
| publicationDate | 1995-06-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | IT-1252299-B |
| titleOfInvention | PERFECTED PROCEDURE FOR THE PREPARATION OF AN ASYMMETRIC MEMBRANE FOR THE SEPARATION OF GASEOUS MIXTURES |
| abstract | An asymmetrical flat membrane, for the separation of gaseous mixtures, having a skin equal to or less than 0.5? M on a spongy support, free or substantially free of defects, is obtained by a process which includes: the preparation of a solution of a PPO [poly (2,6-dimethyl-p-oxyphenylene)] modified by introduction of substitutes trimethyl silyl [-Si (CH3) 3] and hydroxyethyl (-CH2-CH2-OH), in a mixed solvent formyl piperidine and tetrahydrofuran ; - the application of the solution on a support in the form of a film with a thickness from 100 to 500? m; - the partial evaporation of solvent from the film keeping the film in environmental conditions for a period of time not exceeding 30 seconds; and - immersion of the film in an aqueous bath to cause coagulation and membrane formation. |
| priorityDate | 1991-11-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 22.