http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5110982-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_696ca0ae93d5cf5a686273601361781f |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P20-582 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C51-265 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-265 |
| filingDate | 1991-01-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 1992-05-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_13d3ca3d7461a1922beb8780b0b0752d http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_61855bf123d82c307fbf7a01619e1b65 |
| publicationDate | 1992-05-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | US-5110982-A |
| titleOfInvention | Process for producing 2,6-napthalene dicarboxylic acid |
| abstract | A process for producing 2,6-naphthalene dicarboxlic acid which comprises oxidizing a 2-alkyl-6-acyl naphthalene with molecular oxygen-containing gas in the presence of a catalyst containing cobalt, manganese and bromine in an acetic acid solvent, characterized in that the oxygen concentration in the exhaust gas is controlled so as to satisfy the following equation: n n 15/(X+7.5)+0.1≦Y≦90/(X+8)+0.4 (1) n n wherein Y is oxygen concentration (volume %) in the exhaust gas and X (cm) is a distance between the inlet for an oxygen gas and the surface of the reaction solution in a static state, and the catalyst further contains an aromatic acid in which at least two carboxylic acid groups are in an orthposition or its precursor as a co-catalyst, and that part of all of the mother liquor from which the 2,6-naphthalene dicarboxylic acid crystal has been separated is cooled to remove the precipitated impurities, and thereafter is reused in the oxidation reaction, is disclosed. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2004210084-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6740776-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-107641078-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-100882761-B1 |
| priorityDate | 1990-01-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 138.