http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-S57170935-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/C08J9-28 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D53-22 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08J9-04 |
| filingDate | 1981-04-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_29e36be266133c21001b529657974eed http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_88fa9952ae73b9c1d4c08067a52aa717 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7bfbb0b342ae32de53e0e08bac82eaf9 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_48f839e9868962f13e272608d6743ebb http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4dcb9d4fe90ceb3f826d995428dcdaf4 |
| publicationDate | 1982-10-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-S57170935-A |
| titleOfInvention | Preparation of porous polyimide film |
| abstract | PURPOSE: To obtain a porous film for separating a fluid having high reproducibility and permeability, by forming a film from a dope prepared by dissolving a specific aromatic polyimide in a mixture solution of a solvent capable of dissolving the polymer and a solvent incapable of dissolving the polymer, drying the formed film under heating. n CONSTITUTION: (A) An aromatic polyimide, having repeating units expressed by the formula (R is residue after removing the amino group from an aromatic diamine), preferably having a logarithmic viscosity number of 0.5W4 measured by using a solution thereof in a concentration of 0.5g/100ml solvent at 30°C is dissolved uniformly in a mixture solution of (i) 100pts.wt. phenolic compound solvent, e.g. a halogenated phenol, capable of dissolving the polyimide (A) in a concentration ≥5wt%, and having a melting point ≤80°C and a boiling point ≤280°C, with (ii) 5W150pts.wt. aromatic solvent, e.g. phenanthrene, incapable of dissolving the polyimide (A) in a concentration ≥3wt%, and having a lower evaporation rate than the solvent (i) to give a concentration of about 3W30wt%, and the resultant dope is formed into a thin film, which is then dried at about 50W400°C to remove the respective solvents slowly and give the aimed film. n COPYRIGHT: (C)1982,JPO&Japio |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-S59115738-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-H02293030-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-S6274410-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-S6336286-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-H03100493-U http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-WO2017073766-A1 |
| priorityDate | 1981-04-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
| Predicate | Subject |
|---|---|
| isDiscussedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/compound/CID995 http://rdf.ncbi.nlm.nih.gov/pubchem/substance/SID414326734 |
Total number of triples: 25.