http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-105254556-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D213-30 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D213-30 |
| filingDate | 2015-11-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2018-01-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2018-01-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-105254556-B |
| titleOfInvention | A kind of method for preparing picosulfate sodium |
| abstract | The present invention relates to a kind of method for preparing high purity sodium picosulfate, first pyridine and chlorosulfonic acid are reacted, again 4 are added dropwise into above-mentioned mixed liquor, the pyridine solution of 4 ' [(base of pyridine 2) methylene] bis-phenols is reacted, then by multiple steps such as solvent distillation, extraction, decolouring, washing, drying, picosulfate sodium is prepared.The present invention often walks the temperature of reaction by control, adjusts the reaction sequence between material, the picosulfate sodium for the high-purity being prepared, simple process, has good promotion prospect. |
| priorityDate | 2015-11-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 55.