| Predicate |
Object |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J5-18
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y10T428-31721 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G73-16
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G73-1007
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G69-26
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G69-32 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C233-75
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C233-80
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G73-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G69-32
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G69-26 |
| filingDate |
1991-11-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate |
1993-06-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
KR-930010089-A |
| titleOfInvention |
Polyimide copolymer and preparation method thereof |
| abstract |
The present invention is a copolymer having excellent processability and mechanical properties by regularly arranging two types of aromatic organic acid dianhydride and aromatic diamine used as monomers while maintaining excellent heat resistance of aromatic polyimide. And to a method for producing the same.n n n The polyimide copolymer according to the present invention is formula (I) in an organic solventn n n n n n n n n n n n n It is selected from the group represented by)). |
| priorityDate |
1991-11-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |