http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-S54132486-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_88fbcd2a70a3c49d0aed69a000d55909 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08J9-28 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D71-38 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08J5-18 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D71-26 |
| filingDate | 1978-04-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_bb58ab688b5cd5af5958a2c9c828a036 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6bf5077023b982321b8ca31da1e1e57c http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1812a4db63d6bd37d41b952354d27e65 |
| publicationDate | 1979-10-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-S54132486-A |
| titleOfInvention | Production of liquid mixture separating membraneous product |
| abstract | PURPOSE: To obtain a liquid mixt. separating membrane holding well-balanced permeability over a long term by holding a soln. of a saponified α-olefin-vinyl acetate copolymer under specific conditions; heat peptizing the soln,; and forming the peptized soln. into a membrane in a non-solvent as a solidifying bath. n CONSTITUTION: A saponified α-olefin-vinyl acetate copolymer with a 2W30C α- olefin content of 0.5W60mol% of an ethylene content of 60W90mol% and a saponification degree of vinyl acetate above 80mol%, is dissolved in an alcoholic solvent in the former case and in a (halogenated) hydrocarbon solvent in the latter case to prepare a dope. This dope is held at -5W60°C for 1 hrW15 days to allow microphase separation to take place. The dope is then heat peptized and solidified with a non-solvent with a solubility parameter of 8W12, e.g. acetone to form an asymmetric separating membrane having a microgel-contg. surface thin dense layer and an internal porous layer. n COPYRIGHT: (C)1979,JPO&Japio |
| priorityDate | 1978-04-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 21.