http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-3897402-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_04650c4315071ee8af7d26e3441a53b1 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G73-1085 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G73-0677 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G73-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G73-06 |
| filingDate | 1973-08-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 1975-07-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ee14e238b302e5ae0fca2ea875b542ac http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_039c7a015a1dcc34968152b8187d7473 |
| publicationDate | 1975-07-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | US-3897402-A |
| titleOfInvention | High temperature polyimides from 2,3-diacylsuccinic acid diester with diamines |
| abstract | Polyimides which are stable at temperatures up to about 450* C. to 500* C. and which are useful for high temperature applications are prepared by reacting 2,3-diacylsuccinic diesters with diamines in a 1:1 molar ratio. Polyimides are also produced by reacting 2,3-diacylsuccinic diesters with diamines in a 2:1 molar ratio to form bis(pyrrole-3,4-diesters), hydrolysing the tetraesters to form the corresponding bis(pyrrole-3,4dicarboxylic acids), dehydrating the tetracarboxylic acids to form the corresponding bis(pyrrole-3,4-anhydrides), reacting the dianhydrides with aliphatic or aromatic diamines to form poly(amic acids), and thermally cyclizing the poly-(amic acids) to form polyimides. Alternatively, the aforementioned tetraesters, tetracarboxylic acids, and dianhydrides can each be reacted with bis(orthophenylenediamines) to form poly-(imidazopyrrolones) which are also useful for high-temperature applications. |
| priorityDate | 1971-05-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 57.