| Predicate |
Object |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C2602-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J2379-08 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01L23-293
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08K5-0025
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08K5-1535
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B05D1-005
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B05D1-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08K5-07
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08K5-101
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08K5-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G73-1032
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G73-1014
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G73-1039
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G73-1042
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C211-09
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09D179-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G73-1067
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G73-1071
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01L21-02118
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01L21-02282
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J5-18
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C321-00 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08K5-101
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08K5-1535
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08K5-07
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08K5-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08J5-18
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G73-10 |
| filingDate |
2014-05-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
2021-02-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate |
2021-02-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
KR-102219067-B1 |
| titleOfInvention |
Improved process for the production of polyimide and polyamic ester polymers |
| abstract |
The present invention relates to a method for purifying a polymer. The method comprises the steps of: (a) providing an organic solution comprising a polyimide or polyamic ester in at least one polar aprotic polymerization solvent; (b) adding at least one purification solvent to the organic solution to prepare a diluent of an organic solution; (c) washing the diluted organic solution with water or an aqueous solution to obtain a washed organic solution; And (d) removing at least a portion of the at least one purification solvent from the washed organic solution to obtain a solution containing the purified polyimide or polyamic ester, wherein the at least one purification solvent is at least one polymerization solvent It has a lower polarity and less water solubility than at least one polymerization solvent at 25°C. The present invention also relates to a method of forming a film on a semiconductor substrate, as well as related purified polymer solutions, films and articles. |
| priorityDate |
2013-05-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |