http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5821320-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_034bd2161632fd520429808a882d48af |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G73-1007 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G73-10 |
| filingDate | 1997-05-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 1998-10-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_662a76db7f205667bc31c3e5db8214d3 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6c25496cabbb99f14d7acfe6cd051301 |
| publicationDate | 1998-10-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | US-5821320-A |
| titleOfInvention | Method of producing the aromatic polyimide |
| abstract | 18.4 grams of 4,4'-(hexafluoroisopropyridine)diphthalic acid dianhydride and 7.5 grams of 1,4-phenylenediamine dihydrochloride are mixed in a solvent consisting of 80 ml of N-methyl-2-pyrrolidone and 20 ml of dichlorobenzene and are heated at an argon atmosphere to raise its temperature from a room temperature to 170° C. slowly and to be reacted for five hours while an azeotropic dihydration of water which is generated at 170° C. is conducted. After the reaction is completed, a reaction product is precipitated in methanol, the precipitate is washed with methanol and dried at 80° C. FIG. 1 shows the infrared spectra of the reaction product. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5969087-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2005142691-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7285446-B2 |
| priorityDate | 1996-05-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 567.