http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-19980081511-A
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P20-584 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C63-34 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C63-38 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C51-265 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-265 |
| filingDate | 1998-04-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1998-11-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | KR-19980081511-A |
| titleOfInvention | Method for preparing 2,6-naphthalenedicarboxylic acid |
| abstract | In preparing 2,6-naphthalenedicarboxylic acid by acidifying 2,6-dimethylnaphthalene with an oxygen-containing gas in a solvent containing a lower aliphatic carboxylic acid in the presence of a catalyst containing cobalt, manganese and bromine. The total amount of cobalt and manganese of the catalyst component is 50 to 300 mg atoms per 1 mol of 2,6-dimethylnaphthalene, and the atomic ratio of manganese and cobalt is 20: 1 to 4: 1, and the oxidation reaction is 200 to A method of producing 2,6-naphthalenedicarboxylic acid, characterized in that the temperature is performed at 250 ° C, and a mother liquor separated from the slurry as an oxidation reaction product through a solid / liquid separation process at a temperature of 150 ° C or higher. After heat treatment at, it circulates to the oxidation reaction process.n n n According to the present invention, the accumulation of substances that inhibit the oxidation reaction is avoided, and the oxidation reaction mother liquor can be circulated and used at an extremely high rate without lowering the reaction yield, and the catalyst component or solvent component in the oxidation reaction mother liquor is also used. This is effectively used. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-100769972-B1 |
| priorityDate | 1997-04-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 49.