http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-2033830-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_cd8f87c2e2155f28c291bf199765144f http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_24aca9ded2638ea793d05360dde7a4a0 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D2323-08 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D67-0004 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D67-0086 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B29C67-202 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D71-42 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D67-009 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D67-0083 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B29C67-20 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D71-42 |
| filingDate | 1979-10-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1980-05-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-2033830-A |
| titleOfInvention | Process for producing polyacrylonitrile reverse osmotic membranes |
| abstract | Processes for producing asymmetric polyacrylonitrile membranes for use in reverse osmosis comprise dissolving an acrylonitrile polymer in formamide (FA) containing dimethyl- formamide (DMF); shaping the solution while maintaining its temperature above the gellation point; removing the solvent from the shaped product; heating the thus-obtained membrane at 50-120 DEG C and subjecting it to a plasma treatment. In a first process the solvent is removed by treating one surface of the membrane at a temperature below 15 DEG C with an aqueous solution containing at least 10 weight % of a water- soluble solvent compatible with FA/ DMF. In a second process the solvent is removed by treatment with an inert atmosphere and then at a temperature below 40 DEG C with an aqueous solution containing 0-10% of a water soluble solvent compatible with FA/DMF. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6159370-A |
| priorityDate | 1978-10-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 31.