| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_070200d874bdb0c1330a6e2c59e519e5 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J2379-08 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J31-0244
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09D179-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G73-1039
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G73-1042
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G73-1067
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J5-18
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G73-1021 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G73-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J31-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08J5-18 |
| filingDate |
2019-11-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e58c54b6bb4e2a78e2a9d18704bd8736
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4926b7d040e7e145e956c5e511ef6182 |
| publicationDate |
2020-05-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-2020148844-A1 |
| titleOfInvention |
Polyimide film manufacturing method |
| abstract |
The present disclosure relates to a method for producing a polyimide film. The method includes: providing a polyamic acid copolymer including at least a semi-aromatic polyamic acid obtained by reacting cyclobutane-1,2,3,4-tetracarboxylic (CBDA) with an aromatic cyclic diamine; and adding dehydrating agent and a pyridine catalyst having an ortho substituent into the polyamic acid copolymer to carry out a chemical imidization reaction of the polyamic acid copolymer to prepare a polyimide film. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-11603440-B2 |
| priorityDate |
2018-11-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |