http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-3882297-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_387abf6afc9a2cd5cfa5cd4d35f8b9fe |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P20-141 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G2650-22 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G2261-12 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G65-2663 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G65-2609 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G65-266 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G64-34 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G65-2603 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G65-2696 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G64-34 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G65-26 |
| filingDate | 2020-03-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2021-09-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | EP-3882297-A1 |
| titleOfInvention | Process for producing polyether carbonate polyols |
| abstract | The invention relates to a process for starting up the reactor for the continuous production process of polyether carbonate polyols by the addition of alkylene oxide and carbon dioxide in the presence of a DMC catalyst and / or a metal complex catalyst based on the metals cobalt and / or zinc on H-functional starter substance, wherein (α) a subset of H-functional starter substance and / or a suspension medium that has no H-functional groups are mixed in a reactor together with DMC catalyst and / or a metal complex catalyst based on the metals zinc and / or cobalt, the DMC catalyst and / or the metal complex catalyst in the mixture have a concentration s, (γ) After step (α), H-functional starter substance, alkylene oxide and DMC catalyst and / or a metal complex catalyst based on the metals zinc and / or cobalt are continuously metered into the reactor during the addition and the resulting reaction mixture is continuously discharged from the reactor becomes, whereby a steady state is reached, characterized in that in step (α) the concentration s of the catalyst used, based on the mixture resulting from step (α), is in the range of 10 y ≥ s ≥ 1.1 y, where y is the catalyst concentration based on the reaction mixture in step (γ), the steady state in step (γ), and that in step (γ) alkylene oxide is metered in with a mass flow X 1 and X 1 is continuously increased until the mass flow X 2 required for the steady state in the reactor is reached, the time to reach X 2 being at least one hour. |
| priorityDate | 2020-03-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
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