http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-101891683-B
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_49a0d70666db31dab3b0e63213f6ddf2 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D231-48 |
| filingDate | 2010-07-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2013-06-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5401b1c817f562179f41c7105112e81a http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_09b1ec69c01e86763baad5791fcbe81b http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_65f701a87dad507720573583cf9bf3a2 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_0fe1baca7f4344d752eb1bce523b7c4d http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_94d97361f156f2d61e35319cddf93cfd http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_88b09b728ef8834ef9e2e0eb2ad16d03 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b372d9e721b2b422222f739980a76d12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c8a0cfc360e71e0b3f8efdd716e94c53 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_880ba41ddb70792c171410b8128a8c76 |
| publicationDate | 2013-06-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-101891683-B |
| titleOfInvention | Aminopyrine production method |
| abstract | The invention relates to an aminopyrine production method, which comprises the following steps of: the preparation of sulfuric acid antipyrine, nitrosation, first hydrogenation reduction reaction, second hydrogenation reduction reaction, and decoloring, crystallization and drying performed on the crude product of the aminopyrine obtained by the second hydrogenation reduction reaction. Filter-pressing reaction is added between the first hydrogenation reduction reaction step and the second hydrogenation reduction reaction step, and comprises the following steps of: adding activated carbon and the oily 4-amino antipyrine obtained in the first hydrogenation reduction reaction step into a decoloring tank, controlling the temperature to be 80 to 90 DEG C, stirring the solution, adjusting a pH value to be 7.0 to 7.5, and then performing the filter-pressing on the solution in the decoloring tank with a three-liner filter to obtain 4-amino antipyrine filter-pressing liquid. The method has the advantages of improving the yield of the aminopyrine at the premise of ensuring the quality of the product, improving the working environment, saving labor, reducing labor intensity, saving energy, reducing emission and reducing the production cost. |
| priorityDate | 2010-07-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 40.