http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-100643133-B1
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C213-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C213-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C215-76 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C213-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C213-08 |
| filingDate | 2004-11-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2006-11-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2006-11-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | KR-100643133-B1 |
| titleOfInvention | Improved Method of Making Benzidine Compounds |
| abstract | The present invention relates to an improved process for producing a benzidine compound disubstituted with a hydroxyl group by a stepwise reaction of an aqueous sulfuric acid solution and a hydrochloric acid solution, starting from a benzidine compound disubstituted with an alkoxy group, and neutralizing and final purification. will be.n n n According to such a production method of the present invention, a benzidine compound useful as a raw material of a polyimide film for a flexible circuit board can be produced synthetically with a yield of at least 70% and a purity of at least 95%.n n n Benzidine, 4,4'-diaminodiphenyl, benzidine compound disubstituted with alkoxy group, benzidine compound disubstituted with hydroxy group |
| priorityDate | 2004-11-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 18.