http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-113603587-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C67-54 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C67-293 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C69-145 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C67-54 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C67-293 |
| filingDate | 2021-06-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2022-08-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2022-08-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-113603587-B |
| titleOfInvention | A kind of preparation method of chromaticity-stable 2-methyl-4-acetoxy-2-butenal |
| abstract | The invention discloses a preparation method of 2-methyl-4-acetoxy-2-butenal with stable chromaticity, comprising the following steps: (1) 2-methylene-4-acetoxybutyraldehyde With auxiliary agent and solvent under the action of catalyst, gas-solid-liquid three-phase hydroisomerization reaction occurs to generate 2-methyl-4-acetoxy-2-butenal; (2) reaction reaches specified conversion After the rate, the reaction was terminated, the temperature was lowered, and the solid-phase catalyst was filtered out; (3) the solvent, hydrogenation by-product, and unreacted raw materials in the rectification separation system were obtained to obtain the product 2-methyl-4-acetoxy-2- Butenal; wherein the auxiliary agent described in step (1) is one or more organic compounds with two functional groups of amino and carbonyl, based on the raw material 2-methylene-4-acetoxybutyraldehyde used, The dosage of additives is 10-100ppm. The 2-methyl-4-acetoxy-2-butenal provided by the invention has low chromaticity, good stability during long-term storage, slow chromaticity growth, and can better meet downstream demands. |
| priorityDate | 2021-06-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 47.