http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-112047854-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J2231-49 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C231-24 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J31-26 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C233-03 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C233-18 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C231-12 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C233-18 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J31-26 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C233-03 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C231-24 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C231-12 |
| filingDate | 2020-10-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2021-07-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2021-07-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-112047854-B |
| titleOfInvention | Preparation method of N-vinyl alkyl amide |
| abstract | The invention relates to the technical field of vinyl compound production, in particular to a preparation method of N-vinyl alkylamide. The preparation method comprises the following steps: A) reacting acetaldehyde with alkylamide under the action of a composite alkaline catalyst to obtain N-hydroxyethyl alkylamide, and carrying out esterification reaction on the obtained N-hydroxyethyl alkylamide and acid anhydride to obtain an ester compound; the composite alkaline catalyst comprises inorganic alkali and amine compounds; B) and (3) carrying out medium-temperature cracking on the ester compound, and then carrying out reduced pressure rectification to obtain the N-vinyl alkylamide. The inventor finds that the inorganic base and the amine compound are used as the catalyst simultaneously, so that the dosage of the basic catalyst required by the reaction of the N-hydroxyethyl alkylamide and the anhydride can be obviously reduced, the temperature required by the subsequent cracking reaction is reduced, the reaction system is mild, the energy consumption is saved, and the yield and the purity of the reaction product can be obviously improved. |
| priorityDate | 2020-10-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 108.