Predicate |
Object |
assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_d9cb217f83556ce2a418344c2d485415 |
classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D2323-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D2325-023 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y10T428-31721 |
classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D53-228 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D67-00113 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D71-64 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D71-82 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D67-0011 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D69-08 |
classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D53-22 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D69-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D71-64 |
filingDate |
2009-10-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b2eecf77d1f5c7d2574b768f5c0bdf23 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_49120f911a85fbe64c8f919b94cfb827 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_dafd57d51d69f220f86cddcba562e6ab |
publicationDate |
2010-05-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
publicationNumber |
US-2010116131-A1 |
titleOfInvention |
Method for manufacturing polyimide asymmetric membrane, and polyimide asymmetric membrane |
abstract |
A process of producing an asymmetric membrane of multicomponent polyimide. The process includes the steps of (1) preparing a multicomponent polyimide blend solution by mixing a polyimide component A having a number-averaged polymerization index N A and a polyimide component B having a number-averaged polymerization index N B , wherein N A and N B satisfies equation 1: n 2.35× N A −2.09 <N B <450×N A −1.12 1 n (2) subjecting the multicomponent polyimide blend solution to further polymerization and imidation reaction, and (3) causing a phase inversion in the resulting multicomponent polyimide blend solution to form an asymmetric membrane. The polyimide component A is raw materials of polyimide A containing a fluorine atom in the chemical structure thereof and/or a polymerization and imidation reaction product of the raw materials. The polyimide component B is raw materials of polyimide B and/or a polymerization and imidation reaction product of the raw materials. |
isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-11179914-B2 |
priorityDate |
2005-01-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
type |
http://data.epo.org/linked-data/def/patent/Publication |