http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0912625-B1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_85bea2983cde27a684ee8d32ade289d1 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G65-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G65-2696 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G65-26 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G65-2663 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G65-26 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G65-10 |
| filingDate | 1997-07-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2006-02-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9c685ecf2932fee0ed17ac7136e243dc http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e16a76e57e89c41e47c232d6812d6afb |
| publicationDate | 2006-02-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | EP-0912625-B1 |
| titleOfInvention | Continuous preparation of low unsaturation polyoxyalkylene polyether polyols with continuous addition of starter |
| abstract | A continuous process for the preparation of polyoxyalkylene polyethers using DMC catalysts as the polyoxyalkylation catalyst employs continuous addition of alkylene oxide in conjunction with continuous addition of starter and catalyst to a continuous oxyalkylation reactor. Despite the continuous introduction of starter, the molecular weight distribution of the polyether product is quite narrow, as indicated by the exceptionally low polydispersity of the product. The presence of low molecular weight species during the majority of the polyoxyalkylation also substantially eliminates extremely high molecular weight fractions having molecular weights greater than 100,000 Da, again without appreciably broadening molecular weight distribution. By withdrawing intermediate molecular weight polyether product or diverting a portion of the end product to prepare a catalyst/starter mixture, rapid and sustained reaction rates can be achieved while employing low molecular weight starters. Continuous build ratios in excess of 0.98 can be achieved. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-101922549-B1 |
| priorityDate | 1996-07-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 92.