http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-106892893-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D319-12 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D319-12 |
| filingDate | 2017-03-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2020-09-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2020-09-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-106892893-B |
| titleOfInvention | Method for preparing lactide from lactic acid oligomer |
| abstract | The invention provides a method for preparing lactide by lactic acid oligomer, which comprises the following steps: mixing lactic acid oligomer and active compound for reaction, and then carrying out cracking reaction to obtain lactide; the active compound is an organic substance capable of reacting with a terminal hydroxyl group or a terminal carboxyl group of the lactic acid oligomer. Compared with the prior art, the method utilizes the reaction of the active substance and the terminal hydroxyl or the terminal carboxyl of the lactic acid oligomer, improves the molecular weight of the lactic acid oligomer, does not influence the cracking activity of the lactic acid oligomer, has simple process, obtains lactide with far lower free acid content than the lactide obtained by directly cracking the lactic acid oligomer, and has the same yield as the lactide obtained by directly cracking the lactic acid oligomer. |
| priorityDate | 2017-03-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 175.