| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_b55c349b43c3ecba4977fd52cc8f8c67 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J2379-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J2201-042
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J2203-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J2201-032
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P20-54 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H05K1-0346
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G73-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J9-26 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H05K1-03
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08J9-28
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08J9-26
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G73-10 |
| filingDate |
2001-11-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
2004-01-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8759944600c45d234a39b62d4ff3a6e8
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8b3918f99d03e500a974b0e7ee3a1987
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d7801423940cabae20bd01d28b9d371c
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e9430173234e223697c182e7b1037b3a |
| publicationDate |
2004-01-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
TW-570943-B |
| titleOfInvention |
Method of removing low molecular weight substance from polyimide precursor or polyimide containing low molecular weight substance |
| abstract |
A method of efficiently removing a low molecular weight substance from a polyimide precursor or polyimide in which the low molecular weight substance is dispersed as micro-domains, without using a large amount of an organic solvent. The method of removing a low molecular weight substance comprises subjecting either a polymer composition having a micro-domain structure made up of a continuous phase comprising a polyimide precursor and, dispersed therein, a discontinuous phase comprising a low molecular weight substance or a polyimide composition obtained from the polymer composition by converting the polyimide precursor into a polyimide to extraction with a combination of supercritical carbon dioxide and a co-solvent to thereby remove the low molecular weight substance. The co-solvent is preferably an aprotic polar solvent, more preferably a nitrogen compound solvent or a sulfur compound solvent. |
| priorityDate |
2000-11-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |