| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_9ce023a6c13740cb05a67332f11a29f9 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P20-584
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J2231-4277 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07F9-025
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J31-0268
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C17-208
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J31-4053
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07B39-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C45-63
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J31-26
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J31-0271
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J31-0237
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C17-38 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C25-13
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07F9-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07B61-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J31-40
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C205-12
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C45-63
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07B39-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C17-20
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C17-38
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07F9-54 |
| filingDate |
1998-12-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_92fc0972ea72120e01477837ea90a0bd
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b628928e236083851baf32d0f47fcaa2
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_632784b962cb7f45d2f30591e440142f |
| publicationDate |
1999-08-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
CA-2320283-A1 |
| titleOfInvention |
Catalyst recovery for halogen exchange reactions |
| abstract |
It has been found possible to separate catalytically-active aminophosphonium catalysts from mixtures composed predominately of aminophosphonium catalyst residue(s) and heavy ends form a halogen exchange reaction conducted in an aprotic solvent/diluent by extracting such mixtures with a neutral or acidic aqueous extraction solvent medium. Various ways of isolating form the halogen exchange reaction product mixture a mixture composed predominately of aminophosphonium catalyst residue(s) and heavy ends are described. Halogen exchange processes in which the catalytically-active aminophosphonium catalysts are separated for reuse are also described. Since aminophosphonium catalysts are expensive, the present process technology fulfills a need which has existed for an effective way of recovering such catalysts in catalytically active form enabling reuse of such materials, especially as halogen exchange catalysts. |
| priorityDate |
1998-02-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |