| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_c186e9ae8cafab5df5c8d80cfa7b0fa1 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B23B5-16
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D69-125
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D71-36 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D69-12
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D71-36
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B23B5-16 |
| filingDate |
1985-04-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_62014abd8f7c6e7baf47242180bcfb6c
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_36793fae8dc580360703a1ae8ccd5171
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9b8790d3a526d9a260cb5d002e40652b
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1a8656f2bde2190d595cc6462b70ab4b
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_cce090394fb22a83ea5f624499ca2c7f |
| publicationDate |
1986-11-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
JP-S61249502-A |
| titleOfInvention |
Hydrophilic polytetrafluoroethylene filter membrane and its production |
| abstract |
PURPOSE:To obtain the title hydrophilic porous membrane having resistance to both heat and chemicals and suitable for purifying an acidic etching liq. by cross-linking a nonmetallic ion-type fluorine surfactant on a PTFE filter membrane until the surfactant is made insoluble in an aq. soln. CONSTITUTION:A fluorine surfactant is coated on the porous surface of a PTFE filter membrane having narrow pore diameter distribution. At this time, the PTFE filter membrane is placed under 100-150mmHg reduced pressure and immersed in a dilute soln. of the fluorine surfactant to reduce the necessary time. After hydrophilicity is provided to the surface of the PtFE filter membrane by complete immersion in the soln., high-energy radiation rays are irradiated to make the fluorine surfactant insoluble in water. The reaction is preferably carried out under conditions were oxygen is substantially absent. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2016074828-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-112091245-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0463627-A2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0922486-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-103861465-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0922486-B1 |
| priorityDate |
1985-04-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |