| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_a2bcaf91101a370a3d64e3190366357f |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J2471-00 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D71-52
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D71-34
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08L27-16
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D67-0088
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J7-0427 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08L27-16
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08J7-056
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D71-52
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D71-34
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D67-00 |
| filingDate |
1990-02-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b082eb3414772ceecd9d6fb7739a434a
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_dbdd92314a2994c945d605caeadb43ac |
| publicationDate |
1990-08-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
WO-9009232-A1 |
| titleOfInvention |
Polymer membranes based on polyvinylidene fluoride |
| abstract |
The invention concerns polymer membranes based on polyvinylidene fluoride (PVDF), a process for their manufacture and their use for ultrafiltration. The membranes are manufactured by known techniques from homogeneous solutions containing 5 to 50 wt.% of PVDF and 0.01 to 30 wt.% of sulphonic acids and/or their salts obtained by sulphonation of the polyether ether ketones of formula (I): -(-O-p-C6H4-O-p-C6H4-CO-p-C6H4-)n-, or by subsequent neutralization of the sulphonic acids. The membranes are then treated with methanolic solutions containing 0.1 to 5 wt.% of the above-mentioned sulphonic acids and/or their salts. The membranes obtained by this process are characterized by excellent hydrophilic properties, high thermal and mechanical stability and high transmembrane flows. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6200703-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0604882-A3
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0604882-A2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5505851-A |
| priorityDate |
1989-02-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |