| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_efbc93fa15ca59046e84ca5c5c84c433 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08L75-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G63-823
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G18-4277
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G18-4269
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G63-64
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G63-664 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-664
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-82
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-42
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G18-42 |
| filingDate |
2019-12-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_bd93c4bfe72829e4592887dfa21f930f
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_200e5865b198e8ce02a56af5af64cb81
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ec3c6eee4ca93612bddc82da47c4f1c3
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_943592cd0dc0395c07fa181d8fbeb39c
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_aff5f83cacdf20dd16d3950a82db965b
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_3f0173c85570b2c12d2fd05a59b247ea |
| publicationDate |
2020-06-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
WO-2020127582-A1 |
| titleOfInvention |
Method for producing a polyoxyalkylene polyester polyol |
| abstract |
The invention relates to a method for producing a polyoxyalkylene polyester polyol by reacting a polyoxyalkylene polyol with a lactone in the presence of a Brønsted acid catalyst, wherein the catalyst has a pKa value of 1 or less; the number-average molar mass of the polyoxyalkylene polyol is ≥ 1000 g/mol, preferably ≥ 1500 g/mol, particularly preferably ≥ 2000 g/mol; and in the lactone a CH2 group is bonded to the ring oxygen. The invention further relates to polyoxyalkylene polyester polyols obtainable using the method according to the invention, and to a method for producing polyurethanes by reacting the polyoxyalkylene polyester polyols according to the invention with polyisocyanates. |
| priorityDate |
2018-12-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |