| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_18e28813a90fce26789daad54e1354cc |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J2231-70
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J2531-847
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J2231-322 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07F15-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C253-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07F9-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07F9-65744
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C253-30
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J31-185
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J31-2221
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07F9-145
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07F9-4006 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07B43-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07F9-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07F15-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J27-16
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07F9-40
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C253-10 |
| filingDate |
2013-05-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5a753157c65e1d7a77eacbe41b077edf |
| publicationDate |
2015-04-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
EP-2855492-A1 |
| titleOfInvention |
Process for stabilizing hydrocyanation catalyst |
| abstract |
The invention provides a method of forming a phosphonate diester compound from a ligand hydrolysis product (LHP) of a phosphite ligand used in a nickel-phosphite hydrocyanation catalyst, such as for conversion of 3-pentenenitrile to adiponitrile, which serves to eliminate acidic LHP compound for a hydrocyanation reaction milieu where the acidic LHP can catalyze further catalyst ligand destruction. The invention further provides phosphonate disester compounds prepared by alkylation of diarylphosphite LHP in the presence of a nickel-phosphite catalyst comprising a bidentate ligand, and a continuous hydrocyanation process for production of adiponitrile wherein catalyst ligand breakdown is inhibited through inactivation of ligand hydrolysis products towards further breakdown. A method of stabilizing a hydrocyanation catalyst is provided. |
| priorityDate |
2012-06-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |