http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-100730846-B1
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J2201-032 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J2203-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J2201-042 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P20-54 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J2379-08 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J9-26 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H05K1-0346 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G73-10 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G73-10 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/H05K1-03 |
| filingDate | 2001-11-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2007-06-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2007-06-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | KR-100730846-B1 |
| titleOfInvention | Method of removing low molecular weight material from polyimide precursor or polyimide containing low molecular weight material |
| abstract | The present invention relates to a method for effectively removing a low molecular weight material from a polyimide precursor or a polyimide in which a low molecular weight material is microdispersed without using a large amount of an organic solvent. The method for removing low molecular weight material comprises a polymer composition having a microphase separation structure consisting of a continuous phase comprising a polyimide precursor and a discontinuous phase dispersed in the continuous phase and comprising a low molecular weight material, or a polyimide precursor of the polymer composition. The polyimide composition obtained by conversion to polyimide comprises extracting with a combination of supercritical carbon dioxide and a cosolvent to remove low molecular weight material. The cosolvent 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 |
Incoming Links
Total number of triples: 75.