http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0619833-B1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_1e70c0aeade92d7571d955d3b90ea06e |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G63-823 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-82 |
| filingDate | 1992-12-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 1995-07-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8b83894cd46cc9d0dff469515fefc9e3 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_81a57dca4631752af59976c3e41e64e1 |
| publicationDate | 1995-07-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | EP-0619833-B1 |
| titleOfInvention | Rare earth metal coordination compounds as lactone polymerization catalysts |
| abstract | A process for polymerizing lactide and up to 20 mole percent of another lactone is disclosed. The catalysts used have the formula MZ3 wherein M is scandium, yttrium, bismuth, a lanthanide series rare earth metal or a mixture thereof and the Zs are independently the same or different highly coordinating ligands. The preferred metals M are lanthanum, cerium, praseodymium and neodymium with lanthanum being especially preferred. The preferred ligands are betadiketones, betaketoesters and malonate anions with the betadiketones such as 2,2,6,6-tetramethyl-3,5-heptanedionates being especially preferred. |
| priorityDate | 1991-12-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 227.