http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-107456871-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D2323-46 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D63-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D69-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D61-027 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D01D1-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D01D5-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D67-0088 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D71-06 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D63-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D01D5-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D61-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D01D1-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D71-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D69-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D67-00 |
| filingDate | 2017-08-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2020-10-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2020-10-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-107456871-B |
| titleOfInvention | Preparation method of hollow fiber composite loose nanofiltration membrane |
| abstract | The invention provides a preparation method of a hollow fiber composite loose nanofiltration membrane. The hollow fiber loose nanofiltration membrane with the separation aperture reaching the nanometer level is prepared by mixing and dissolving polyether bravas, dimethylacetamide and polyethylene glycol to prepare spinning membrane casting solution, spinning the spinning membrane casting solution under certain process conditions to prepare a hollow fiber external pressure membrane, and soaking the hollow fiber external pressure membrane in sulfuric acid aqueous solution. The loose nanofiltration membrane has the advantages of simple preparation method, large volume ratio, small occupied area, high treatment efficiency, small separation aperture and the like, has good removal effect on particulate matter colloid, has good removal effect on small molecular organic matters in water, and can intercept molecular weight below 1000 Da. Can be effectively applied to the pretreatment of concentrated water organic matters, such as the separation of antibiotics, dyes and the like with the molecular weight of about 1000 g/mol in water and organic solvents. It also has good effect on removing inorganic substances. |
| priorityDate | 2017-08-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 40.