| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_387abf6afc9a2cd5cfa5cd4d35f8b9fe |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G65-2603
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/C08G64-34 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G65-26
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G64-34 |
| filingDate |
2015-05-26-04:00^^<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_2d750e680be3912657e136e5595430be
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ecae65aaa7db15718a093b2ac7abf9fb
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_0c8af9b6e93e021134555a2be71b657b
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9c24732bf853ae61e57b9f88d2ddefa7 |
| publicationDate |
2016-11-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
EP-3098250-A1 |
| titleOfInvention |
Method for manufacturing polyether carbonate polyols |
| abstract |
The invention relates to a process for the preparation of polyether carbonate polyols by addition of alkylene oxides and carbon dioxide to carboxylic acids in the presence of a double metal cyanide (DMC) catalyst, wherein one or more carboxylic acids are metered continuously into the reactor during the reaction, characterized in that the carboxylic acid is at least difunctional and has one with a pKa greater than or equal to 1.5, and - The addition of one or more carboxylic acid is such that at any point in the process according to the invention, the molar concentration of unreacted carboxylic acid in the reaction mixture a value in the amount of 0.001 mol / g multiplied by the mass used per liter of reaction mixture of the catalyst in grams not exceeds, and - Two carboxylic acid groups present in the same molecule are separated from each other by at least one carbon atom.n n n The process furthermore relates to polyethercarbonate polyols obtained by the process according to the invention. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-115785471-B
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-115785471-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-114269806-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2021018753-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-3771724-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2020058852-A1 |
| priorityDate |
2015-05-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |