http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-112876395-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J2531-845 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C2601-16 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J31-16 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C403-12 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C403-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J31-16 |
| filingDate | 2021-01-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2023-01-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2023-01-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-112876395-B |
| titleOfInvention | A kind of preparation method of vitamin A acetate |
| abstract | The invention discloses a preparation method of vitamin A acetate. The method reacts raw materials vinyl ionol, organic phosphine compound and five-carbon aldehyde under the action of a catalyst to form vitamin A acetate, and adopts a one-step method to synthesize vitamin A acetate , to avoid the problems of many by-products and serious equipment corrosion caused by the liquid acid catalyst in the reaction; at the same time, it also solves the defects of large amount of alkali catalyst and difficult disposal of spent alkali. |
| priorityDate | 2021-01-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 100.