| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_387abf6afc9a2cd5cfa5cd4d35f8b9fe |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G65-2663
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G18-56
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G65-2603
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G65-2696
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G2-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G2-22 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G2-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G65-26
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G18-56
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G2-22 |
| filingDate |
2022-06-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6cd446d861d007fc6227c8dff0648d4b
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5073d30377d4a7e6815cea059eaceb98
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e2dc36aedc0cc1f8076bf3228302e36c
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_dd114f9d5e210b5a2ff8700c8eaf136d |
| publicationDate |
2022-12-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
WO-2022258570-A1 |
| titleOfInvention |
Process for producing polyoxymethylene-polyoxyalkylene copolymers |
| abstract |
The present invention describes a process for producing a polyoxymethylene-polyoxyalkylene copolymer, comprising reacting a polymeric formaldehyde compound with an alkylene oxide in the presence of a double metal cyanide (DMC) catalyst, the polymeric formaldehyde compound having at least one terminal hydroxyl group. The process comprises providing a suspending agent in a reactor and copolymerizing the polymeric formaldehyde compound with the alkylene oxide, copolymerization taking place at a reactor temperature of 72°C to 84°C. The invention further relates to a polyoxymethylene-polyoxyalkylene copolymer that can be obtained by means of such a process and to the use of same for producing a polyurethane polymer. |
| priorityDate |
2021-06-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |