http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-105218358-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C51-487 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C51-43 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C51-42 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-487 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C63-307 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-43 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-42 |
| filingDate | 2015-09-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2017-09-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2017-09-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-105218358-B |
| titleOfInvention | A kind of process for purification of thick trimesic acid |
| abstract | The invention discloses a kind of process for purification of thick trimesic acid, comprise the following steps：(1) aoxidize：Oxygen-containing gas is passed through into the mixture of thick trimesic acid and solvent and carries out oxidation reaction, by controlling the amount of oxygen-containing gas to control tail oxygen concentration to be no more than 5.0%, thick trimesic acid is 1 with solvent quality ratio:2~10, reaction temperature is 200~280 DEG C, and 0.9~3.6MPa of reaction pressure, the reaction time is 0.2~4 hour, obtains oxidation liquid；(2) cure：The oxidation liquid that step (1) is obtained insulated and stirred under 120~200 DEG C, 0.2~3MPa obtains dispersed phase solution in 0.5~4 hour；(3) crystallize：After the further decrease temperature and pressure of dispersed phase solution that step (2) is obtained to 15~110 DEG C and normal pressure, trimesic acid product is filtrated to get.The present invention has technique simple, environmental protection, high income, and product purity is high, the measured advantage of matter, and the purity of obtained trimesic acid is more than 99.9%, and average grain diameter is more than 120 microns. |
| priorityDate | 2015-09-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 46.