| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_1e70c0aeade92d7571d955d3b90ea06e |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J2219-00121 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D319-12
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J19-1862 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J19-18
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D319-12 |
| filingDate |
1989-02-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e9f07c4b21e63180382147db4689c752 |
| publicationDate |
1990-09-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
EP-0385000-A1 |
| titleOfInvention |
Atmospheric pressure process for preparing cyclic esters |
| abstract |
This invention relates to an improved process for preparing highly pure cyclic esters by heating a polymer of the corresponding α-hydroxy acid or its ester or a copolymer of α-hydroxy acid or its ester and a thermally stable polyether in the presence of an inert gas at atmospheric pressure. The cyclic ester is carried from the reaction with the inert gas to a solvent system. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-9318019-A1 |
| priorityDate |
1987-02-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |