http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-114835584-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_9a15fe75ba1c76f6bca4e550721d9d00 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P20-584 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C201-16 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C201-12 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C205-57 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C201-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C201-16 |
| filingDate | 2022-06-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_66a36fed76ece4493b2bbec923216679 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8326473df9cb7d65d81a9b9949ff59ed http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_cef3c0d5d7f157f63a935e36c008da92 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_958aad55685d412920c148ed7045118a http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7d45a04366393ef248d2c05412528085 |
| publicationDate | 2022-08-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-114835584-A |
| titleOfInvention | Method for post-treatment of 3-methyl-4-nitrobenzoic acid and alcohol esterification |
| abstract | The application relates to a method for post-treatment of 3-methyl-4-nitrobenzoic acid and alcohol esterification reaction, relates to the field of fine chemical industry and organic chemistry synthesis, and comprises the following steps: S1. 3-methyl-4- Nitrobenzoic acid is mixed with a solvent, and under the action of an acid catalyst, 3-methyl-4-nitrobenzoate is generated with alkyl alcohol through heating esterification reaction; S2. the reaction solution is subjected to cooling crystallization, filtration separation, The drying step obtains the purified esterification product; S3. the mother liquor after filtration and separation in step S2 is concentrated to recover the solvent, and after concentrating to remove water, the acidic mother liquor is recycled to the next batch; S4. The solvent recovered in step S3 is Recycle to the next batch after dehydration. In this application, acid catalysts such as sulfuric acid and esterification reaction solvents are recycled, which greatly reduces the cost of waste acid water treatment, and reuses raw materials that have not fully reacted to the next batch of production, thereby increasing the yield of the product. Significantly reduce production costs. |
| priorityDate | 2022-06-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 59.