http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-S57131229-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_24aca9ded2638ea793d05360dde7a4a0 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G73-14 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G73-00 |
| filingDate | 1981-02-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_34635416d45b2cdfc418e57c229a8eb4 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ba6b3d48a3592add16c8935a49f03e56 |
| publicationDate | 1982-08-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-S57131229-A |
| titleOfInvention | Production of aromatic polyamide-imide |
| abstract | PURPOSE: To obtain the titled good powder-form polymer having good boiling- water resistance, by subjecting an aromatic polycarboxylic acid to precipitation polycondensation with a polyisocyanate in the presence of a combination of a dicarboxylic acid anhydride and a tert. amine catalyst by using a specified solvent. n CONSTITUTION: A polymer is obtained in the form of precipitate by reacting, with heating, an aromatic polycarboxylic acid consisting mainly of an aromatic tricarboxylic acid anhydride (e.g., trimellitic anhydride) with a polyisocyanate consisting mainly of an aromatic diisocyanate (e.g., diphenylmethane 4,4'-diisocyanate) in the presence of a combination of a catalyst which is a tert. amine (e.g., trimethylamine or triethylamine) and a dicarboxylic acid anhydride (e.g., phthalic anhydride) by using a solvent selected from the group consisting of nitrobenzene, nitrotoluenes, benzonitrile and acetonitrile. It is possible to obtain an aromatic polyamide-imide having prominently excellent boiling-water resistance, by conducting the reaction in the presence of the dicarboxylic acid anhydride. n COPYRIGHT: (C)1982,JPO&Japio |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2013065714-A1 |
| priorityDate | 1981-02-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 43.