http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-S59135239-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_b19eaa8e535da4e4bceed99917a68153 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08J9-28 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D71-68 |
| 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_5c90c9f375ceb52d9146baac3dfb28e5 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_cf7fc6490ae09042654e3f37f9d3d0f7 |
| publicationDate | 1984-08-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-S59135239-A |
| titleOfInvention | Production of porous polysulfone membrane |
| abstract | PURPOSE: To facilitate the production of a porous polysulfone membrane capable of being used to filter a relatively high MW compound, by producing the porous membrane by a wet process in which a mixture containing ethylene carbonate is used as a coagulant. n CONSTITUTION: In the production of a porous polysulfone membrane by a wet process, use is made of a coagulant which is a mixture containing 15W90wt% ethylene carbonate. The polysulfone solution used is preferred to contain not only a good solvent but also a swelling agent. Examples of the swelling agents used include alcohols. When the ethylene carbonate content of the coagulant is below 15wt%, the effect of preventing skin layer formation is lowered, and the permeability, for example, is lowered to the order of 1,000(1/hr.m 3 .atm). When the content is above 90wt%, the workability in membrane formation becomes poor because ethylene carbonate is solid at normal temperature. n COPYRIGHT: (C)1984,JPO&Japio |
| 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
| Predicate | Subject |
|---|---|
| isDiscussedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/compound/CID7303 http://rdf.ncbi.nlm.nih.gov/pubchem/substance/SID419518788 |
Total number of triples: 15.