http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-103613544-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D231-46 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D231-46 |
| filingDate | 2013-12-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2015-12-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2015-12-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-103613544-B |
| titleOfInvention | 4-AA production technique and device thereof |
| abstract | The invention belongs to field of medicine and chemical technology, relate to a kind of 4-AA production technique and device thereof, step is as follows: 1-phenyl-3-methyl-5 pyrazolone and methyl-sulfate are methylated through high temperature, are hydrolyzed generation hydrolyzed solution; 1-phenyl-3-methyl-5 pyrazolone and methyl-sulfate are produced to obtain quinizine oil through high temperature methylation reaction, hydrolysis and alkaline purification; Hydrolyzed solution, quinizine oil are mixed with quinizine quaternary ammonium salt brine solution; Quinizine quaternary ammonium salt brine solution through nitrosification, reduction, neutralization generate 4-AA, temperature cool 20 DEG C for subsequent use.The usage quantity of liquid caustic soda of the present invention, sulfuric acid greatly reduces; Sodium sulfate, hc effluent quantity discharged reduce obviously, environmental friendliness, and technique is simple, and easy to operate, product yield is high. |
| priorityDate | 2013-12-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 43.