http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-H07149898-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_424db9d56b06a23aed410fcf5df652f3 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G73-14 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G73-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G73-22 |
| filingDate | 1993-12-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5c7b650b8c6cd223ae4bd52c67b26600 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f7bd95d9cd8a19c6a25013b9bff43c40 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8a1903dbd9dc5f6c9c884f740f6e5050 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_0a5fa7138069e12ea0cd081f228ce7b8 |
| publicationDate | 1995-06-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-H07149898-A |
| titleOfInvention | Method for producing polyamic acid and method for producing polyimide |
| abstract | (57) [Summary] [Structure] An aromatic tetracarboxylic acid dianhydride represented by the following general formula (1) is reacted with an aromatic diamine represented by the following formula (2). A method for producing a polyamic acid having a unit as a main repeating unit, and the following general formula (4), characterized in that the polyamic acid is subjected to dehydration ring closure. A method for producing a polyimide, wherein the unit is the main repeating unit. [Chemical 1] (However, R represents a tetravalent aromatic hydrocarbon group.) [Effect] According to the method for producing a polyimide of the present invention, it has excellent heat resistance, excellent mechanical strength, and a linear expansion coefficient. A polyimide that is small and has excellent thermal dimensional stability can be easily manufactured. Moreover, according to the method for producing a polyamic acid of the present invention, a polyamic acid useful as an intermediate for such a polyimide can be easily and reliably produced. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2006028073-A |
| priorityDate | 1993-12-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 113.