http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-113304619-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F2103-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D2325-36 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D2325-30 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02A20-131 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F1-441 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D67-0093 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D69-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D69-125 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D67-0002 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D67-0006 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D61-025 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D71-56 |
| classificationIPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C02F103-08 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D67-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D61-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D71-56 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C02F1-44 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D69-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D69-02 |
| filingDate | 2021-06-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2022-08-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2022-08-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-113304619-B |
| titleOfInvention | A kind of chlorine-resistant composite reverse osmosis membrane and preparation method thereof |
| abstract | The invention relates to the technical field of reverse osmosis membranes, and discloses a chlorine-resistant composite reverse osmosis membrane and a preparation method thereof. The preparation method includes the following steps: (1) treating the surface of the polysulfone ultrafiltration base membrane with argon plasma, then soaking it in an aqueous solution of chlorosulfonic acid, and then soaking it in an aqueous solution of polyamine, and drying to obtain the first polysulfone ultrafiltration base membrane; (2) ) immersing the polysulfone ultrafiltration base membrane 1 in the organic solution of polybasic acid chloride to obtain the polysulfone ultrafiltration base membrane 2; (3) heat-treating the polysulfone ultrafiltration base membrane 2 to obtain a composite reverse osmosis membrane; (4) dipping the composite reverse osmosis membrane The reverse osmosis membrane is immersed in a reducing solution mixed with a phosphoric acid solution and a formaldehyde solution for reduction treatment to obtain an amide N-methylolated polyamide membrane; (5) The amide N-methylolated polyamide membrane is placed in glutaryl The chlorine-resistant composite reverse osmosis membrane is obtained by cross-linking treatment in an aldehyde solution. The chlorine-resistant composite reverse osmosis membrane prepared by the invention has significantly enhanced chlorine resistance, prolonged service life, reduced economic cost and expanded desalination application range. |
| priorityDate | 2021-06-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 37.