| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_42f27437cc239fa0cb21abbbe22f09a9 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G73-1014
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G73-1082 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G73-10 |
| filingDate |
1989-12-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
1992-12-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_cba21069e8f0091a1b395d79d7b6862c |
| publicationDate |
1992-12-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-5175241-A |
| titleOfInvention |
Polyimide with reduced anhydride content |
| abstract |
Polyimide resins, which have reduced anhydride content when molded, are prepared by a novel reaction process that includes reacting an esterified aromatic tetracarboxylic acid or anhydride monomer with a primary aromatic diamine until substantially no free monomer remains to form a polyamide-acid (the molar ratio of esterified monomer to diamine ranging from 1:1 to 1:2); reacting the polyamide-acid with a low molecular weight end-capping agent to form an end-capped polyamide-acid; and heating the end-capped polyamide-acid to form the polyimide. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7041778-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6103864-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6837464-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6494405-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6334589-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8883956-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7858734-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/RU-2671719-C2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5357032-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5453484-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2009143521-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6375125-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6184333-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6777525-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-105037725-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2013172513-A1 |
| priorityDate |
1989-12-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |