http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-101464009-B1
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G73-1007 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G73-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G73-1028 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08L79-08 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08L79-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G73-10 |
| filingDate | 2007-11-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2014-11-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2014-11-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | KR-101464009-B1 |
| titleOfInvention | Method for producing polyamic acid solution and polyamic acid solution |
| abstract | In the previous step, the diamine and an excess molar amount of the tetracarboxylic acid dianhydride relative to the diamine are reacted in a solvent containing water in an amount exceeding 1/3 molar equivalents relative to the tetracarboxylic acid dianhydride to obtain a polyamic acid solution In a subsequent step, a diamine and / or a tetracarboxylic acid dianhydride are added to the polyamic acid solution so that the diamine component and the tetracarboxylic acid component are substantially equimolar amounts, and then reacted again to prepare a polyamic acid solution , Polyamic acid having a high concentration and low viscosity can be produced with good reproducibility and stability by controlling the polyamic acid to a predetermined low molecular weight. |
| priorityDate | 2006-11-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 79.