| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_630b360599ea5cf4b5bcbc0c6c0a3e2d |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D71-64 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D01F8-16
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D01F6-74
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D53-22
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08J9-28
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D71-64 |
| filingDate |
1987-11-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e32c87305510b2b328f9c36ad9e09f8a
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_abec61f7d28a096c5a38acd06551cb90
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_38da4cb89de20ad70f01f5307079810f
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_533605eb3fa8ace8d6ab3b21368cb441 |
| publicationDate |
1989-05-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
JP-H01123607-A |
| titleOfInvention |
Production of composite separation membrane |
| abstract |
PURPOSE: To improve the separation performance of the above membrane by applying a soln. of aromatic polyimide or amido-imide in dioxane as the main solvent on a porous membrane obtained by forming the membrane of the aromatic copolyimide or amido-imide having a specified composition by a wet process, drying the soln., and heat-treating the obtained material. n CONSTITUTION: The aromatic copolyimide consisting of the materials shown by formulas I and II in 90W70/10W30 molar ratio or the aromatic copolyamido- imide consisting of the materials shown by formulas III and IV in 70W90/30W10 molar ratio is formed into a membrane by a wet process. A soln. of 0.05W10pts. wt. of the copolyimide or amido-imide in the mixed solvent consisting of 100pts. wt. of dioxane and 5W50pts.wt. of the other polar solvents such as DMF and DMSO is applied on the obtained porous membrane, dried, and heat-treated. By this method, a more stable composite membrane having excellent separation performance and permeability than the conventional one not added with dioxane can be obtained. n COPYRIGHT: (C)1989,JPO&Japio |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-H09136985-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2016136294-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2008285316-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-4530652-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-WO2016136294-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10543455-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2005162885-A |
| priorityDate |
1987-11-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |