| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_f06bc663994d3b17c1a11b9ef8ced19b |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D2323-18
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D2323-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D2323-12 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D71-34
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D67-0011
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D67-0013
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D69-02 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D69-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D67-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D71-34 |
| filingDate |
2016-08-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
2019-07-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_68a3d79f12415b741701a1dcbe70a062
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ce6aa65c1aaa9162ab86b20aab4bfbe0
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_fcce6e5beff2aacba566e04589ea0280
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_394c36e23b450ec81ebb8c806b70a27b
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d756601c7232d141682213c4d09a3905
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_286654543756273948c82006463badbd |
| publicationDate |
2019-07-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-10335741-B2 |
| titleOfInvention |
Method for preparing the network-pore polyvinylidene fluoride membrane based on polyvinyl alcohol gel |
| abstract |
A method for preparing the network-pore polyvinylidene fluoride membrane based on polyvinyl alcohol (PVA) gel includes the steps of (1) mix and stir PVA, masking agent and solvent, heat and dissolve the mixture evenly under 105 degree Celsius to obtain a PVA solution; (2) in the PVA solution, add PVDF and pore-forming agent, where the rest shall be added with the solvent until the total mass fraction sum is 1, stir, heat and dissolve the solution evenly to obtain the homogeneous casting solution; (3) the casting solution is filtered, deaerated, phase-separated and solidified as membrane A; (4) removes the PVA gel from membrane A to obtain membrane B; (5) membrane B is washed with water to remove the residual solvent to obtain the PVDF membrane with network-pore structure. The resulting PVDF membrane is an asymmetric membrane with an ultra-thin cortex and an interpenetrating network-pore sub-cortex structure. |
| priorityDate |
2015-09-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |