http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-S6456102-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/C08G73-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08J5-18 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D71-64 |
| filingDate | 1987-08-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8d897aa4f6bf632c91d29b41266c044f http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_14ea607b5f49bf99a08a729a0fc4b7c7 |
| publicationDate | 1989-03-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-S6456102-A |
| titleOfInvention | Aromatic polyimide semipermeable membrane and its production |
| abstract | PURPOSE:To obtain aromatic polyimide semipermeable membrane having sufficient resistance to hot water enough for hot sterilization, having also high water permeability and high fractionating capacity by constituting the film of a biphenyl tetracarboxylic acid component and a bis(aminophenoxy) compd. component. CONSTITUTION:An aromatic tetracarboxylic acid component such as 3,3',4,4'-biphenyl tetracarboxylic acid dianhydride, etc., and an aromatic diamine component such as 1,4-bis(4-aminophenoxy)benzene, etc., are dissolved in a phenolic solvent such as 4-chlorophenol, etc. A swelling agent such as polyethylene glycol, etc., is added to the soln., and a soln. of aromatic polyimide is obtd. by carrying out condensation and imidization in the soln. Obtd. dope soln. after filtration of the aromatic polyimide soln. is flowed on a glass plate forming thus liquid thin film, then, the thin film is dipped in a coagulation bath of ethanol, etc. The film is further treated in hot water to obtain a semipermeable membrane having >=0.1m<3>/m<2>.day.kg/cm<2> permeation velocity for pure water. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7964698-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2021119003-A |
| priorityDate | 1987-08-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 32.