| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_8fc0668fd5cbfe23cea7d9bdd5de932a |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D487-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08L63-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G59-4042
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D209-48
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08L79-085 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08J5-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D487-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08L79-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G59-50
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D209-48
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08L63-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G59-40 |
| filingDate |
1991-10-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_dc29fab78cc05095cbe3b2c34fa83010
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_64871706c6fd48a6e837dbc33b912dbd
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b45fcce50f4e71e8f82e43b9230ad066 |
| publicationDate |
1992-04-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
CA-2093322-A1 |
| titleOfInvention |
Epoxy resins based on diaminobisimide compounds |
| abstract |
A method for the preparation of a diaminobisimide compound of formula (I) substantially free of oligomers, wherein Ar1 is an optionally substituted aromatic residue which provides for good conjugation between the nitrogen containing groups; and Ar is an optionally substituted aromatic residue characterized in that at least two molar proportions of an aromatic dia-mine of the formula (II): H2N-Ar1=NH2 wherein Ar1 is as defined above, are heated with one molar proportion of an aro-matic tetracarboxylic acid of the formula (III): (HOOC)2Ar(COOOH)2, or the corresponding dianhydride, wherein Ar is as defined above, optionally in the presence of a polar solvent and optionally including 0.1 to 2 molar proportions of a tertiary amine. The compounds of formula (I) are useful curing agents in epoxy resin formulations. |
| priorityDate |
1990-10-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |