http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-102393607-B1
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G65-2606 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G64-0208 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/C08G64-34 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/C08G65-266 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G64-34 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G65-26 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G64-02 |
| filingDate | 2017-06-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2022-05-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2022-05-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | KR-102393607-B1 |
| titleOfInvention | Method for preparing polyether carbonate polyols |
| abstract | The present invention relates to the addition of an alkylene oxide and carbon dioxide onto an H-functional starter material in the presence of a double metal cyanide (DMC) catalyst or in the presence of a metal complex catalyst based on metal zinc and/or cobalt. A process for preparing polyether carbonate polyols by (γ) alkylene oxide and carbon dioxide in the presence of a double metal cyanide catalyst or metal zinc and/or cobalt on H-functional starting material in a reactor added at a total (absolute) pressure of 5 to 120 bar in the presence of a metal complex catalyst based on it, to obtain a reaction mixture comprising polyether carbonate polyol, (δ) the reaction mixture obtained in step (γ) At this initial total (absolute) pressure of 5 to 120 bar it remains in the reactor or is optionally transferred continuously to a subsequent reactor, wherein the content of free alkylene oxides in the reaction mixture is in each case reduced by the post-reaction, wherein during step (δ) the total (absolute) pressure can be reduced by up to 50% and (ζ) the content of readily volatile constituents in the obtained reaction mixture is reduced thermally at a temperature between 80° C. and 200° C. It's about how to be. The present invention provides that (ε) the reaction mixture resulting from step (δ) has, prior to step (ζ), a total (absolute) pressure of ≤ 2.0 bar, preferably 0.5 bar to 2.0 bar, particularly preferably 0.9 bar to 1.1 bar and then maintained at a temperature of 80 to 180° C. for a residence time of at least 0.5 h. After the residence time has elapsed, 5 to 100 ppm of component K is added to the resulting mixture, wherein component K is selected from at least one compound containing phosphorus-oxygen-hydrogen groups. |
| priorityDate | 2016-06-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 368.