| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_b992e5f7a0ebce9c8b6dff49206f2764 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02A20-131
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D2325-36 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F1-441
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D69-12
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D71-56
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D61-025
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D67-0002 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D61-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D67-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D69-12
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D71-56
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C02F1-44 |
| filingDate |
2022-08-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_cd852f06a09739b52498236cade3e134
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b416540f0e6df813d9b08333df5ff802
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ea1cd6d9dca31da1b5502f823b0d73e6
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_fbdea5a1d27688c6b912296ea1d0264c
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_87901439fa8d3c6c16e24326a633a30a |
| publicationDate |
2022-10-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
CN-115228290-A |
| titleOfInvention |
A kind of preparation method of cleaning-resistant reverse osmosis membrane |
| abstract |
The invention discloses a preparation method of a cleaning-resistant reverse osmosis membrane. The method includes the following steps: 1) after the porous support layer base film is contacted with the aqueous phase solution containing polyfunctional amines and aminophenols, the excess aqueous phase is removed, and then contacted with the polyfunctional acid chloride organic phase solution to obtain a polyamide composite membrane; 2 ) cleaning the polyamide composite membrane obtained in step 1) to obtain a polyamide composite membrane with a certain amount of amine residue; 3) treating the polyamide composite membrane obtained in step 2) with a nitrous acid solution; rinsing and drying to obtain the polyamide composite membrane obtained in step 2). Described cleaning resistant reverse osmosis membrane. The reverse osmosis membrane prepared by the method has the performance of acid and alkali resistance cleaning on the basis of maintaining high flux and high desalination rate. |
| priorityDate |
2022-08-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |