http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-S54131666-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_cd8f87c2e2155f28c291bf199765144f |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08J9-28 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08J5-18 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D71-42 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D71-38 |
| filingDate | 1978-04-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a102ef09c9736c083c11b33fefe12e59 |
| publicationDate | 1979-10-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-S54131666-A |
| titleOfInvention | Manufacturing of acrylonitrile polymer semipermeable membrane |
| abstract | PURPOSE: To manufacture the title membrane having asymmetric porous structure and excellent separation characteristics and mechanical strength, by forming a film from a dope of an acrylonitrile polymer in dimethyl formamide containing formamide at specific temperature, and removing the solvent from the film. n CONSTITUTION: 10W35 wt% of an acrylonitrile polymer containing ≥80 wt% of acrylonitrile unit and having an intrinsic viscosity of 0.4W4, is dissolved in a mixed solvent of formamide and dimethylformamide (1/99W28/72). The dope is formed to the membrane having desired shape at a temperature higher than the gelation temperature by 1W50°. The membrane is passed through an inert atmosphere immediately after the forming, and subjected to the solvent removal process. n EFFECT: Highly asymmetric structure. Adjustable rate of permeation and salt-removing efficiency. n COPYRIGHT: (C)1979,JPO&Japio |
| priorityDate | 1978-04-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 19.