| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_c03364e7230dcbaab10dd7d9a7aac19e |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J2379-08 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G73-1078
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G73-1067
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G73-1007
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G73-1039
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J5-18 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08L79-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08J5-18
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G73-10 |
| filingDate |
2020-08-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8e45fa703c02e7437a8e447e4e2e8ce0
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_3059582b931eb8ac577b2c0318cf9593
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ab0b409e6fd52bd60be76bda620536a2
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_378f2af2e97d03a86d20616ce6f2eba9 |
| publicationDate |
2021-02-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
WO-2021031924-A1 |
| titleOfInvention |
Colorless transparent polyimide film containing fluorine and cardo structure and preparation method therefor |
| abstract |
A polyimide film containing a fluorine substituent and a Cardo structure and a preparation method therefor. The polyimide film has excellent heat resistance, transparency and mechanical properties. The transparent polyimide film has a glass transition temperature (Tg) of 360°C or more, a coefficient of thermal expansion (CTE) of 50 ppm/°C or less, a modulus of 4.0 GPa or more, b* not greater than 5, and a yellowness index not greater than 8. The transparent polyimide film can be used as an optical film in the fields of display substrates or liquid crystal displays (LCDs) and organic light emitting diodes (OLEDs) and a substrate in other fields. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2023002576-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2023002556-A1 |
| priorityDate |
2019-08-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |