| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_03a1ed60fe1d7a5f793b02cd98391dc5 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C11D3-0036
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G63-81
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G63-672
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C11D3-3715 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-66
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G65-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C11D1-74 |
| filingDate |
2009-07-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c4d3db2f28ba68f2807676c2467963a9
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5733b5dc07f2383611232cfd0c3ca029
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_89d77621adbdf20308d7817d40b832be |
| publicationDate |
2012-05-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
EP-2448992-A1 |
| titleOfInvention |
Process for producing polyether-polyester block copolymer |
| abstract |
The present invention disclo ses a process for producing a polyether-polyester block copolymer with a di(C 1-C 4)alkyl ester of aromatic dicarboxylic acid, an aliphatic diol or aliphatic polyol and a polyether having at least one terminal hydroxyl group in an inert solvent. In the present invention, the inert solvent 5 is used to prevent the di(C 1-C 4)alkyl ester of aromatic dicarboxylic acid from sublimation instead of excessive polyol, such that the subsequent removal of excessive polyol under high temperature and high vacuum is avoided. |
| priorityDate |
2009-07-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |