http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-112851524-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C209-86 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C211-54 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C211-55 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C209-86 |
| filingDate | 2021-01-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2022-07-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2022-07-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-112851524-B |
| titleOfInvention | Rapid separation method of triphenylamine and diphenylamine |
| abstract | The invention provides a method for rapidly separating triphenylamine and diphenylamine, which comprises the following steps: 1) mixing and heating the triphenylamine crude product and an acid water solution, and reacting to obtain a solution; 2) cooling the solution, crystallizing, and then carrying out solid-liquid separation to obtain liquid and solid; 3) mixing the liquid with alkali for reaction to obtain solid diphenylamine; and mixing the solid with an aqueous solution of alkali for reaction to obtain the solid triphenylamine. The method adopts non-toxic and harmless conventional acid and alkali solution to replace toxic and harmful solvent, takes triphenylamine mixture containing a small amount of diphenylamine as raw material, retains diphenylamine impurity in crystallization mother liquor through one-time protonation reaction crystallization, and completely converts triphenylamine into solid, thereby realizing the separation of triphenylamine and diphenylamine. |
| priorityDate | 2021-01-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 33.