| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_5128cfc84a0fb189fceb3cd240c44493 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D2323-385
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J2323-02 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D69-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J9-405
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D67-0093 |
| classificationIPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D06M101-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D06M101-16
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D06M101-18 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D06M14-28
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D71-26
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D71-38
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D69-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D67-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08J9-40
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D01D5-247 |
| filingDate |
1988-07-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_661ed93bcc4895b675096138d7f2a13c |
| publicationDate |
1989-02-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
EP-0302650-A1 |
| titleOfInvention |
Hydrophilic microporous membrane and process for preparing same |
| abstract |
A hollow fiber microporous membrane of a polyolefin having a polyvinyl alcohol chemically bonded to the inner and outer surfaces of the hollow fiber membrane and the surfaces defining the pores thereof exhibits a good hydrophilic property as well as good chemical resistance, mechanical strength, water permeation performance and durability. This membrane has an average pore diameter of 0.01 to 5 µm and a porosity of 20 to 80%. The polyvinyl alcohol/polyolefin composition ratio is constant in the membrane thickness direction of the hollow fiber, the oxygen/carbon atomic ratio X on the outer surface of the hollow fiber microporous membrane is 10 to 50%, and the condition defined by the ratio X/2 ≧ Y is satisfied between said oxygen/carbon atomic ratio X and the oxygen/carbon atomic ratio Y in the entire microporous membrane. The membrane is prepared by irradiating a hollow fiber microporous membrane of a polyolefin with ionizing radiations, reacting the membrane with vinyl acetate and then hydrolyzing the membrane. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8946352-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5075003-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0371178-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0315420-A3
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5160627-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9486746-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4940541-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0559149-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5445771-A |
| priorityDate |
1987-07-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |