http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-S57125220-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/C08G73-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G73-14 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G18-34 |
| filingDate | 1981-01-28-04:00^^<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 | 1982-08-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-S57125220-A |
| titleOfInvention | Preparation of polyamide-imide |
| abstract | PURPOSE: To obtain the powdery aromatic polyamide-imide having improved reproducibility of a reached molecular weight, by subjecting an aromatic tricarboxylic acid anhydride, etc. with an aromatic diisocyanate, etc. to precipitation polycondensation using a nitrotoluene as a solvent. n CONSTITUTION: (A) An aromatic polycarboxylic acid generally comprising ≥50mol% aromatic tricarboxylic acid anhydride (e.g., trimellitic acid anhydride, etc.) is reacted with (B) a polyisocyanate comprising generally ≥70mol% aromatic isocyanate (e.g., p-phenylene diisocyanate, etc.) using (C) a tertiary amine (preferably triethylenediamine, etc.) as a catalyst in (D) a solvent of a nitrotoluene (e.g., p-nitrotoluene, etc.) preferably at 120W180°C for 1W10hr. The amount of the raw material monomers based on the solvent D is preferably 0.2W 1mol/l. n COPYRIGHT: (C)1982,JPO&Japio |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2014530955-A |
| priorityDate | 1981-01-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 33.