http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-11028039-B2
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_dfcbe5be0e443d4a10e33db71ac59a98 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C67-37 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C41-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J27-24 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C43-13 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J23-75 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C67-37 |
| filingDate | 2020-01-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2021-06-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7bdac9781616c7cb90a1f450ad907ae1 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ec1e6e270448d19e71d4cd67a89ef3ca |
| publicationDate | 2021-06-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | US-11028039-B2 |
| titleOfInvention | Method for preparing a β-hydroxycarboxylic acid ester |
| abstract | A method of preparing β-hydroxycarboxylic acid ester comprises mixing an alkylene oxide, a monohydric alcohol and a composite catalyst, and performing a carbonylation esterification reaction in a carbon monoxide atmosphere to obtain the β-hydroxycarboxylic acid ester. The composite catalyst comprises a main catalyst, a cocatalyst and a reducing agent. the main catalyst is at least one of a cobalt salt, cobalt oxide and cobalt hydroxide. The cocatalyst is a nitrogen-containing heterocyclic compound. The reducing agent is a base metal. The method is an atomic reaction type process, does not produce three wastes, and has high conversion rate. It is a green environmental protection process. The composite catalyst used does not contain Co2(CO)8. The raw materials and catalyst used are all cheap and easily available. The composite catalyst can be used repeatedly at a lower cost, and is suitable for industrial applications. |
| priorityDate | 2019-03-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 162.