http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-2046729-A2
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_63a838fb7b3e23f9d9d43c7f75188187 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C253-10 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C255-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C253-10 |
| filingDate | 2007-07-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_988ca185d54f8045ff97e9a90bee0336 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a649ca01d3711ba966dec8094df21005 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d19025ff2971d61dfd1e76e4d5dabca8 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d6032e23f8e4793b90a33843df866eb8 |
| publicationDate | 2009-04-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | EP-2046729-A2 |
| titleOfInvention | Hydrocyanation process with reduced yield losses |
| abstract | The invention provides a hydrocyanation process for the production of adiponitrile and other dinitriles having six carbon atoms, the process comprising: a) forming a reaction mixture in the presence of at least one Lewis acid, said reaction mixture comprising ethylenically unsaturated nitrites having five carbon atoms, hydrogen cyanide, and a catalyst precursor composition, by continuously feeding ethylenically unsaturated nitrites, hydrogen cyanide, and a catalyst precursor composition; b) controlling X and Z, wherein X is the overall feed molar ratio of 2-pentenenitriles to all unsaturated nitrites and Z is the overall feed molar ratio of hydrogen cyanide to all unsaturated nitrites, by selecting a value for X in the range from about 0.001 to about 0.5, and a value for Z in the range from about 0.5/1 to about 0.99/1, such that the value of quotient Q, Formula (I), wherein Q is in the range from about 0.2 to about 10, wherein 3PN is 3- pentenenitriles and 4PN is 4-pentenenitrile; and c) withdrawing a reaction product mixture comprising adiponitrile; wherein the ratio of the concentration of 2-pentenenitriles to the concentration of 3-pentenenitriles in the reaction mixture is from about 0.2/1 to about 10/1; wherein the catalyst precursor composition comprises a zero-valent nickel and at least one multidentate phosphorus-containing ligand; wherein the multidentate phosphorus-containing ligand is selected from the group consisting of a phosphite, a phosphonite, a phosphinite, a phosphine, and a mixed phosphorus-containing ligand or a combination of such members; and wherein the multidentate phosphorus-containing ligand gives acceptable results according to at least one protocol of the 2- Pentenenitrile Hydrocyanation Test Method. |
| priorityDate | 2006-07-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 107.