http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-111672337-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F2101-38 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F2103-30 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D69-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F1-285 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D17-0202 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D67-0006 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D71-36 |
| classificationIPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C02F103-30 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C02F101-38 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D17-022 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D67-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C02F1-28 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D69-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D71-36 |
| filingDate | 2020-05-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2022-01-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2022-01-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-111672337-B |
| titleOfInvention | Preparation method of hydrophilic PTFE (polytetrafluoroethylene) filter membrane suitable for treating oil-containing anionic dye wastewater and filter membrane |
| abstract | The invention relates to a preparation method of a hydrophilic PTFE filter membrane suitable for treating oil-containing anionic dye wastewater and the filter membrane, and belongs to the technical field of membrane modification. The preparation method comprises the following steps: a) preparing a chitosan acetic acid aqueous solution; b) adding citric acid and potassium dihydrogen phosphate into the chitosan acetic acid aqueous solution to dissolve so as to form a first reaction solution; c) adding a fluorocarbon surfactant into the first reaction liquid to form a second reaction liquid; d) and (3) immersing the PTFE filter membrane into the second reaction solution for reaction, and obtaining the hydrophilic PTFE filter membrane after the reaction is finished. The filter membrane is suitable for treating oily wastewater, is particularly suitable for treating oily dye wastewater, and has the advantages of high hydrophilicity, strong oil-water separation capability and good anionic dye removal capability. |
| priorityDate | 2020-05-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 38.