http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0457694-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_f66694c501147990420510b2425765af |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G73-14 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G18-345 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G18-0828 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G18-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G73-14 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G18-34 |
| filingDate | 1991-04-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_795a531d270ab7112520a8d1f51dd585 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7e38fea4b521b11d83089c306152e210 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e84652871243305648e6317a685a6d25 |
| publicationDate | 1991-11-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | EP-0457694-A1 |
| titleOfInvention | Process for the preparation of semi-ordered polyamide-imides |
| abstract | The present invention relates to a process for obtaining semi-ordered polyamide-imides.n n n 1) réaction entre une partie d'un diisocyanate aromatique et la totalité de l'anhydride trimellique en présence de diméthylalkylène urée de pH ≦ 7 jusqu'à dissolution du composé intermédiaire, 2) addition successivement de un ou plusieurs diacides aromatiques et du reste du diisocyanate aromatique dans la diméthylalkylène urée de pH ≦ 7 jusqu'à dissolution complète du polyamide-imide obtenu. More particularly, it consists in carrying out the polycondensation in two distinct phases: 1) reaction between part of an aromatic diisocyanate and all of the trimellic anhydride in the presence of dimethylalkylene urea of pH ≦ 7 until dissolution of the intermediate compound, 2) successively adding one or more aromatic diacids and the remainder of the aromatic diisocyanate in dimethylalkylene urea of pH ≦ 7 until complete dissolution of the polyamide-imide obtained. n n n The semi-ordered polymers thus obtained have a lower TG than the statistical polymers, which facilitates their shaping. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/AU-691380-B2 |
| priorityDate | 1990-05-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 31.