http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-S6475465-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_95585944cd76ddfb6dc33ed2a0b84403 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-685 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G73-16 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-68 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D01F6-74 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-60 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D209-48 |
| filingDate | 1987-09-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_462b0e45c577abf4e0f618fd4b874807 |
| publicationDate | 1989-03-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-S6475465-A |
| titleOfInvention | Novel diimidodicarboxylic acid and production thereof |
| abstract | NEW MATERIAL:A diimidodicarboxylic acid expressed by formula I (R1 and R2 are halogen, 1-6C alkyl, cyclohexyl, phenyl or 1-4C alkoxy; m and n are 1 or 2). EXAMPLE:1,4-Bis[(4-carboxy)phthalimido]-2,5-dimethylbenzene. USE:A raw material for polyester imides having better melt polymerizability than that of well-known diimidodicarboxylic acid. PREPARATION:A compound expressed by formula II is reacted with trimellitic acid anhydride in a molar amount of preferably twice based on the above- mentioned compound, preferably in an inert gas atmosphere, such as nitrogen or argon, in the presence of a polar solvent, such as dimethylacetamide or dimethylformamide, at 150-180 deg.C temperature under ordinary - higher pressure, normally for 5-10hr to efficiently afford the aimed compound expressed by formula I. |
| priorityDate | 1987-09-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 28.