http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-S59136106-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_b19eaa8e535da4e4bceed99917a68153 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D2325-12 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D67-0011 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D71-68 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D67-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D71-68 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08J9-28 |
| filingDate | 1983-01-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1f895a71e7f398046b1fc8a45def89d7 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_cf7fc6490ae09042654e3f37f9d3d0f7 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5c90c9f375ceb52d9146baac3dfb28e5 |
| publicationDate | 1984-08-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-S59136106-A |
| titleOfInvention | Manufacture of separating membrane made of polysulfone |
| abstract | PURPOSE:To manufacture easily a separation membrane made of polysulfone having superior divisibility, water permeability and high mechanical strength by dissolving polysulfone in a solvent incorporating ethylene carbonate having a specified concentration and making a membrane by a wet process. CONSTITUTION:In a solvent incorporating 20-70wt% ethylene carbonate and the rest N-methyl-2-pyrrolidone, about 10-30% polysulfone is added and heated to obtain a solution for making a membrane. The solution is cast, dipped immediately and coagulated in a coagulation liquid such as water to obtain a polysulfone separation membrane having high water permeability and mechanical strength. At >=70% concentration of ethylene carbonate in above described solution, about >=150 deg.C polysulfone melting point is required and the control of the manufacturing condition becomes difficult. On the other hand, at <=20% concentration, a high water-permeability value cannot be obtd., so the concentration is regulated to above described values. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-S6189237-A |
| priorityDate | 1983-01-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 24.