Predicate |
Object |
assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_574bc8fd24e08fc5a292d012c5a28e48 |
classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G18-44 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G64-305 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G18-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G63-64 |
classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G64-30 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07F5-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G18-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J31-26 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G18-44 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-64 |
filingDate |
2004-04-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
grantDate |
2008-04-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9d69ab87dfcf5aae6a91e5469c064895 |
publicationDate |
2008-04-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
publicationNumber |
EP-1477508-B1 |
titleOfInvention |
Ytterbium(III)acetylacetonate as catalyst for the preparation of aliphatic oligocarbonate-polyols |
abstract |
Oligocarbonate diols (I) having a number average mol. wt. of 500-5000 g/mol are prepared by transesterification of organic carbonates with aliphatic polyols in the presence of ytterbium (III) acetylacetonate. An independent claim is included for an NCO-terminated polymer prepared by reaction of a stoichiometric excess of organic (poly)isocyanates with oligocarbonate diols (I). |
priorityDate |
2003-05-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
type |
http://data.epo.org/linked-data/def/patent/Publication |