http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4352922-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_d816e9611efad49f0f71391032a0bf3f |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G73-14 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C51-31 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-31 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G73-14 |
| filingDate | 1981-03-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 1982-10-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b34564a0ff44cb5c16de9da8a127263e http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_315c4a6e02115c24bf9605d0752fe0c1 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2bd899888925f0b93b4f1238ce55d35d |
| publicationDate | 1982-10-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | US-4352922-A |
| titleOfInvention | Method of producing an improved poly-(amide-imide) resin by reacting a phenanthrene with formaldehyde followed by oxidizing to produce a polycarboxylated product followed by reaction with an aromatic diamine |
| abstract | According to the present invention, there is provided an improved method of producing a poly-(amide-imide) resin comprising the steps of: (1) reacting a phenanthrene with formaldehyde or a formaldehyde donor in the presence of an acid catalyst to give a phenanthreneformaldehyde reaction product having substantially only methylene bridges; (2) removing from the reaction product unreacted phenanthrene; (3) treating the reaction product with formaldehyde or a formaldehyde donor in the presence of an acid catalyst to give a high molecular weight product having substantially only methylene bridges; (4) oxidizing the high molecular weight product to break the 9, 10 bond in the phenanthrene moieties to produce a polycarboxylated reaction product; (5) reacting the polycarboxylated reaction product with an aromatic diamine to produce a poly-(amide-imide) resin. The resin would find use as a lamp capping cement, as a high temperature insulator, in copper clad high temperature printed circuits, in electrical heater panels, in transformers and in glass or asbestos laminates for use as compressor blades. |
| priorityDate | 1980-03-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 42.