http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-110975621-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D71-68 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D61-025 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D67-0006 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D61-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D71-68 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D67-00 |
| filingDate | 2019-12-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2022-05-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2022-05-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-110975621-B |
| titleOfInvention | Reverse osmosis membrane based on weak base-weak acid buffer system and preparation method thereof |
| abstract | The invention belongs to the technical field of reverse osmosis membranes, and particularly relates to a reverse osmosis membrane based on a weak base-weak acid buffer system and a preparation method thereof. The method comprises the following steps: coating aqueous phase solution on the base film; drying, and then coating an oil phase solution; finally, carrying out post-treatment to obtain the reverse osmosis membrane; the aqueous phase solution comprises polyamine, a weak base-weak acid buffer system and an alcohol hydrophilic additive; the oil phase solution comprises polybasic acyl chloride and an oil phase solvent. The weak base-weak acid buffer system adopted by the invention has the advantages of simple and easily-controlled cost, good retention rate, improved water flux, good stability and low preparation cost. |
| priorityDate | 2019-12-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 77.