| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_5c24684033fba97d1ad845ce453a57e3 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P20-584
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J2540-12
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J2540-32
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J2531-822
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J2231-321 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J31-24
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J31-0239
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J31-0267
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J31-4061
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J31-2404
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07B41-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C45-50
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07F9-5054
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J38-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C45-786
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J31-4053
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J31-4046 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C45-50
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J38-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07B61-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C45-78
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C47-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J31-40
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J31-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J31-24
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07F9-50
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C47-34 |
| filingDate |
1997-05-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_becf8ca407196445443752bb23b74d1b
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ef52b6955efdd2db27dbc43f3c1feb94
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e66b35130e80c6b79bc88b618bffe7a1 |
| publicationDate |
1997-11-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
CA-2204818-A1 |
| titleOfInvention |
Process for preparing aldehydes |
| abstract |
The present invention relates to a process for preparing aldehydes by hydroformylation of olefinically unsaturated compounds with hydrogen and carbon monoxide in homogeneous phase in the presence of a catalyst system comprising rhodium complex compounds and aromatic phosphines in a molar excess and separating off the catalyst system from the hydroformylation reaction mixture by pressure filtration on a semipermeable membrane of an aromatic polyamide. The process comprises carrying out the hydroformylation at a pH of 2.5 to 4.3 using a molar ratio of phosphine:rhodium of at least 60 and at a rhodium concentration of at least 10 ppm by weight, based on the olefinically unsaturated compound used, and using, as aromatic phosphines, special alkylammonium and/or aryl-ammonium salts of sulfonated or carboxylated triarylphosphines. The process according to the invention leads to excellent activities and selectivities in the hydroformylation step itself and also to high retention values in the membrane filtration step. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-103288610-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-103288610-B |
| priorityDate |
1996-05-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |