| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_03d0f52bb4069f8a19d70dcfb697c67a
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_b7ae6d34b516dd84dffb8c23dd1b62b3
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_704661512ebd76bf812ecd5a3cddfb3f |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J2365-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D2325-30 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G61-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D67-0027
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D67-003
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J9-28
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D71-44 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G61-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D67-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08J9-28
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D71-44 |
| filingDate |
1997-12-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_250b9a53bda668e0983fdd692bfbe18a
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4b8cb116987bf8fed385cd7fc72940c7 |
| publicationDate |
1998-06-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
WO-9824540-A1 |
| titleOfInvention |
Microporous membranes and process for the production thereof |
| abstract |
Microporous membranes excellent in chemical resistance, particularly suitable for microfiltration, and easy of disposal; and a process for the production thereof. Specifically, microporous membranes characterized by being made from a polymer prepared by the ring-opening polymerization of a compound of the chemical formula (I) and by having a bubble point of 10 to 1000 kPa as determined using ethanol (according to the testing method stipulated in JIS K 3832), the polymer including the open-ring polymers and copolymers represented by the chemical formula (II), for example, norbornene resins. A process for the production of a microporous membrane, characterized by casting a solution prepared by dissolving under heating an open-ring polymer of a compound of the chemical formula (I) in a solvent (a) in which the polymer is soluble to form a film, rapidly cooling this film, and extracting the solvent (a) from the resulting film with a cleaning solvent (b) in which the polymer is insoluble to thereby obtain a microporous membrane having a bubble point of 10 to 1000 kPa as determined using ethanol (according to the testing method stipulated in JIS K 3832). |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2008222929-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2023127417-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2017095675-A |
| priorityDate |
1996-12-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |