| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_b1eb45363dce10e89a25ee61d528e6f8 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G73-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G09F9-30
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08L79-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J5-18 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G09F9-30
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08J5-18
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G73-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08L79-08 |
| filingDate |
2020-12-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_0f56773498496583799fdbf52aa26dfb
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9c103a564335170810c9a620c438603c
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_477e891370e09e2ec31fa4de01ea264c
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_0045c75d9ac19df25c287fcd15c5b9d0
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ccb30c291eb406877bf173aff78d6b02 |
| publicationDate |
2022-06-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
WO-2022133722-A1 |
| titleOfInvention |
Polyimide material and preparation method therefor and application thereof |
| abstract |
The present invention relates to a polyimide material and a preparation method therefor and an application thereof. The polyimide material prepared in the present invention has a structure represented by formula (I), wherein R is selected from the remaining groups after an amino end group is removed from a large-volume diamine having a relative molecular mass greater than 260 or an aromatic diamine having the number of benzene rings greater than 2; Ar is selected from the remaining groups after an oxygen end group is removed from the aliphatic dianhydride or the remaining groups after an oxygen end group is removed from aromatic dianhydride; m and n are each independently selected from a natural number from 100 to 300. The polyimide material prepared in the present invention has excellent solvent resistance, thermal stability and a high glass transition temperature and light transmittance, and a low phase difference and thermal expansion coefficient. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-115445579-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-115445579-B |
| priorityDate |
2020-12-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |