http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-108047034-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C51-44 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C51-265 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C67-54 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C67-08 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C67-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C63-26 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C63-24 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C69-78 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C69-82 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C69-80 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C63-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-44 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C63-16 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C67-54 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-265 |
| filingDate | 2017-12-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2021-02-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2021-02-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-108047034-B |
| titleOfInvention | Method for coproducing methyl benzoic acid, methyl benzoate and phthalic diester |
| abstract | The invention discloses a method for coproducing methyl benzoic acid, methyl benzoate and phthalic diester, which comprises the following steps: (1) continuously introducing dimethylbenzene, a catalyst and an oxygen-containing gas into an oxidation reactor for reaction, and controlling the introduction amount of the oxygen-containing gas to ensure that the concentration of tail oxygen is not more than 5 percent to obtain an oxidation reaction liquid; (2) feeding the obtained oxidation reaction liquid into a primary distillation tower for rectification separation to obtain a low-boiling-point component and a primary distillation tower bottom liquid; (3) rectifying the primary distillation tower residue in a rectifying tower to obtain a methyl benzoic acid product and rectifying tower residue; (4) mixing the tower bottom liquid of the rectifying tower with alcohol to carry out esterification reaction, and controlling the reaction end point to be that the content of methyl benzoic acid is less than 0.5 wt% to obtain esterification reaction liquid; (5) rectifying and separating the obtained esterification reaction liquid to respectively obtain methyl benzoate and phthalic diester products. The invention has the advantages of simple process, less equipment investment, environmental protection and good comprehensive economic benefit. |
| priorityDate | 2017-12-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 126.