| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_8b919a09598a02c07e8429b1441b76e1 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G73-105
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G73-1067
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G73-1064
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G73-1014 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G73-10 |
| filingDate |
1989-05-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
1990-09-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f167166d4c79ec421e5579b01acdcf29
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_54b8cc90b42891e276b79150987615f1 |
| publicationDate |
1990-09-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-4956450-A |
| titleOfInvention |
Process for forming end-capped polyamic acids polyimides |
| abstract |
This invention discloses a process where a portion of an amine terminated polyamic acid intermediate is end-capped with an aromatic monoanhydride additionally substituted with a free carboxylic acid or ester thereof. The polyamic acids of this invention are readily converted to high molecular weight polyimides which may contain a small amount of amide groups. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5171822-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5461137-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5461138-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-114479073-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2015108457-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-03085030-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5145943-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5280102-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5432001-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5243024-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6777525-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2003073803-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2013289202-A1 |
| priorityDate |
1989-05-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |