http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-112266347-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D203-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D203-08 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D203-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D203-08 |
| filingDate | 2020-11-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2022-11-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2022-11-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-112266347-B |
| titleOfInvention | A kind of preparation method of high-purity ethyleneimine |
| abstract | The present invention relates to a method for obtaining high-purity ethyleneimine. The steps are as follows: (1) adding an aqueous alkali metal hydroxide solution to the crude product of ethyleneimine containing monoethanolamine and ethylamine impurities; (2) Add arylsulfonyl chloride to the mixed solution until the precipitate in the mixed solution is no longer dissolved; (3) Distill the mixed solution and collect fractions to obtain high-purity ethylene imine products. The method of the present invention utilizes the huge difference in reaction phenomena between primary amines, secondary amines and arylsulfonyl chlorides, realizes efficient separation of ethyleneimine and impurity primary amines, and obtains high-purity ethyleneimine products with a content greater than 99.9%, and the raw materials are cheap Easy to obtain, mild reaction conditions, simple operation process. |
| priorityDate | 2020-11-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 45.