http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-3619252-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_387abf6afc9a2cd5cfa5cd4d35f8b9fe |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G65-2615 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G65-2663 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G65-2603 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G64-34 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G64-34 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G65-26 |
| filingDate | 2016-05-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_345501cecef28444fcb6f976e10ed35a http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_0c741f394849593a72d14d81fd077a9f http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_0c8af9b6e93e021134555a2be71b657b http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9c24732bf853ae61e57b9f88d2ddefa7 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a9a3b886f39b1d8424810273fcaeb168 |
| publicationDate | 2020-03-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | EP-3619252-A1 |
| titleOfInvention | Method for producing polyether carbonate polyols |
| abstract | The invention relates to a method for producing polyether carbonate polyols by agglomeration of alkyl oxides and carbon dioxide on carboxylic acid in the presence of a double metal cyanide (DMC) catalyst, wherein one or more carboxylic acids are continually added to the reactor during the reaction, characterized in that the carboxylic acid is at least difunctional and has a pKa value greater than or equal to 1.5, and the adding of the one or more carboxylic acids occurs such that, at any time in the method according to the invention, the molar concentration of unconverted carboxylic acid in the reaction mixture does not exceed a value in the amount of 0.001 mol/g multiplied by the mass of the catalyst used per liter of reaction mixture, specified in grams, and two carboxylic acid groups present in the same molecule are separated from each other at least by one carbon atom. The method further relates to the polyether carbonate polyols obtained according to the invention. |
| priorityDate | 2015-05-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 344.