http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-S5958041-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_1374dd16777534b65ad4422333245af8 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D71-68 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08J9-28 |
| filingDate | 1982-09-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4e27767520b2ba832ec5f1b3cda4266e http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_bdcb1ee024be16591c948fa08bf7ad9f |
| publicationDate | 1984-04-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-S5958041-A |
| titleOfInvention | Preparation of porous polysulfone membrane |
| abstract | PURPOSE: To prepare the titled porous membrane having excellent permeability and suitable as a membrane filter and a blood-treatment membrane, by forming a solution composed of a polysulfone resin, a solvent of the resin, a cationic metal salt, and an alcohol in the form of a film, and coagulating the film in a coagulation bath. n CONSTITUTION: A polysulfone resin solution is prepared by mixing (A) a polysulfone resin preferably a polymer containing ≥50mol% of the recurring unit of formula I or formula II with (B) a solvent which dissolves ≥15wt% of the polysulfone resin at ≤50°C, (C) a univalent or bivalent cationic metal salt, and (D) a 2W15C monohydric alcohol. The concentration of the resin, the salt and the alcohol in the resin solution are 8W35wt%, 0.3W7wt% and 15W55wt%, respectively, and the weight ratio of alcohol/polysulfone resin is ≥2.5. The solution is cast or spun at a temperature near the clouding point (±30°C) to form a membrane, and the product is immersed and coagulated in a coagulation bath (water or an aqueous organic liquid) to obtain a porous membrane having micropores with 0.05W5μ diameter at the surface layer. n COPYRIGHT: (C)1984,JPO&Japio |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0121911-A2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-S60222112-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-S6336805-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-S63139930-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-S636033-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-H03267132-A |
| priorityDate | 1982-09-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 22.