| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_2a395c0263026a41022485ebd8a78c4e
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_1f8713f6ace083308920724981592661
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_538dc065215c8ac6e586e893af6f85e9
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_802a62c4ea3ff0d9f135d2b2647002d3 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P20-584 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C45-80
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C45-50 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C29-14
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C45-50 |
| filingDate |
2009-08-19^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
2013-09-24^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5b6deb61504ec4d0b24dd3ab64663032
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_13383ce7207fb6ec751c7906978f998b
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_62f7810ee3b03eeffb8b4e4eeb8d9534 |
| publicationDate |
2013-09-24^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-8541627-B2 |
| titleOfInvention |
Hydroformylation process including catalyst recycle |
| abstract |
An improved hydroformylation catalyst cycle is disclosed wherein the cobalt catalyst is recycled to the hydroformylation reaction mainly as a water soluble carbonyl salt, obtained from extraction of the acidic form of the homogeneous cobalt carbonyl catalyst from the hydroformylation product with an aqueous solution of a salt of a weaker acid. The organic product after extraction is submitted to a further demetalling step in the presence of a dilute acid and an oxidant. The water from this further demetalling step is suitable for use in the upstream extraction step. A free water phase present in the hydroformylation reaction product may be separated upstream from the extraction step and is suitable for use in the further demetalling step, such that the catalyst cycle has no waste water stream. |
| priorityDate |
2008-08-29^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |