http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-H0549882-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_d9cb217f83556ce2a418344c2d485415 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D71-64 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D67-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D53-22 |
| filingDate | 1991-08-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e7ebea6ac4448ae266e36356e4a3dc0c http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_48f839e9868962f13e272608d6743ebb |
| publicationDate | 1993-03-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-H0549882-A |
| titleOfInvention | Highly selective gas separation membrane and its manufacturing method |
| abstract | (57) [Summary] (Modified) [Structure] Biphenyltetracarboxylic acids and / or aromatic tetracarboxylic acid containing 80 to 100 mol% of 2,2-bis (3,4-dicarboxyphenyl) hexafluoropropane "Specific repeating units (A), (B), and (C) (wherein R 1 is based on an aromatic diamine compound) obtained by polymerizing and imidizing a component and an aromatic diamine component It is a divalent aromatic residue. (In the formula, R 2 is a divalent aromatic residue based on an aromatic diamine compound.) (In the formula, R is based on an aromatic tetracarboxylic acid. A gas separation membrane formed of a soluble aromatic polyimide having a tetravalent aromatic residue, and R 3 is a divalent aromatic residue based on an aromatic diamine compound. , Unsaturated compounds-plasma treated Has been. [Effect] It has a highly practical gas separation performance in which the permeation rate of helium gas is sufficiently high and the gas separation property (selective permeability) between helium and nitrogen is extremely high. It can be manufactured industrially with good reproducibility. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2007167852-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5882382-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5811196-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2007090348-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5690870-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2019534141-A |
| priorityDate | 1991-08-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 172.