http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-111699179-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J2467-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J2335-02 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07B61-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D319-12 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D319-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07B61-00 |
| filingDate | 2019-03-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2021-09-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2021-09-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-111699179-B |
| titleOfInvention | Production method of cyclic ester |
| abstract | The production method of the cyclic ester of the present invention is as follows: a mixture (I) containing an aliphatic polyester, a specific polyalkylene glycol diether, and a sulfonic acid compound as a thermal stabilizer is prepared and heated under predetermined conditions to obtain Mixture (II) in solution state. The heating of the mixture (II) was further continued to distill off the cyclic ester produced by the depolymerization reaction together with the polyalkylene glycol diether to obtain a distillate (III). From the distillate (III) Cyclic esters are recovered. At this time, a specific solubilizer is added to at least one of the mixtures (I) and (II). In the present production method, the sulfonic acid compound as a thermal stabilizer is contained in the mixtures (I), (II) and the distillate (III). |
| priorityDate | 2018-03-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 109.