| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_c3d2897d8957967372ab255feca0c3f0 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F2810-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07B63-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J2531-002
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P20-584
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J2231-32 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F297-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J31-0271
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J38-42
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F8-20
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J31-40
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F6-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J38-48 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F6-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F8-20 |
| filingDate |
2022-05-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a174af3ae0f80ba2d1bb752ef6cb039e
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4382ccdc106d09604f401df6b48b1c13
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_19f10d7241940cc734fe1aca95f5be39
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_20dc0a4b8d15845de1c1a044fbceffff
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_11279722413035d21945e0c5d1f47ffb |
| publicationDate |
2022-12-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
WO-2022251027-A1 |
| titleOfInvention |
Process for recovering quaternary salt bromination catalyst |
| abstract |
Quaternary ammonium tribromides and quaternary phosphonium tribromides are recovered from an organic solvent by washing with an aqueous hydrazine solution. The hydrazine reacts to form nitrogen, hydrobromic acid and a quaternary ammonium or quaternary phosphonium monobromide. The hydrobromic acid and quaternary ammonium or quaternary phosphonium migrate to the aqueous phase, thereby effecting the removal of the tribromides from the organic solvent. The hydrobromic acid can be neutralized with a quaternary ammonium or quaternary phosphonium hydroxide to produce a quaternary ammonium or quaternary phosphonium monobromide. The monobromides produced can be reacted with elemental bromine to regenerate a tribromide brominating agent. |
| priorityDate |
2021-05-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |