| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_c72d118f5664072de841f9c5c34b9d99 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G73-1007
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G73-1053 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D307-89
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G73-10 |
| filingDate |
2001-12-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
2002-12-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a720032585b831ccdaca369ac12cda22
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f96833ee4bb85f0cc82a273faaa842c9
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_87c2ebcded3575ca113a45fd542105d7
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b4f9d93c9926c4e0a182d2ab8d0581e2 |
| publicationDate |
2002-12-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-6498224-B1 |
| titleOfInvention |
Methods for the preparation poly(etherimide)s |
| abstract |
A new method for the synthesis of poly(etherimide)s comprises transimidation of bis(imide) (IV)in the presence of a substituted phthalic anhydride or 4-substituted tetrahydrophthalic anhydride to yield dianhydride (V)which may then be reacted with a diamine to produce poly(etherimide)s. By-product substituted N-alkylphthalimide or 4-substituted N-alkyltetrahydrophthalic anhydride may be recycled or converted to 4-substituted N-alkylphthalimide for use in the formation bisimide (IV), obviating the need for a nitration step. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6881815-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10407397-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2005023903-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2004015328-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-11661416-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2023173367-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-11787776-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10377860-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2004063897-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-11459314-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6849706-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7153394-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9382382-B2 |
| priorityDate |
2001-12-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |