http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-908757-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_1e70c0aeade92d7571d955d3b90ea06e |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C51-097 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C55-14 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C55-14 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-097 |
| filingDate | 1961-03-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1962-10-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-908757-A |
| titleOfInvention | Process for producing adipic acid and a ketone oxime |
| abstract | Adipic acid and a ketoxime are prepared by reacting cyclohexanol with adipomononitrolic acid, reacting the resulting adipomonohydroxamic acid with a ketone, and separating adipic acid and the oxime of the ketone from the reaction mixture. Specified ketones are cyclohexanone, acetone and methyl ethyl ketone. A preferred procedure comprises (1) reacting adipomononitrolic acid with cyclohexanol to produce adipomonohydroxamic acid and cyclohexyl nitrite and distilling off the latter; (2) heating the adipomonohydroxamic acid with the ketone to produce adipic acid and the ketoxime; (3) neutralising with an aqueous base, extracting the ketoxime with a non-aqueous solvent, and crystallising adipic acid from the aqueous phase; (4) oxidising the cyclohexylnitrite with nitric acid to form adipomononitrolic acid and nitrous acid; (5) recycling the nitrolic acid to step (1); and (6) oxidising the nitrous acid with air and recycling the nitric acid to step (4). If cyclohexanone is used as the ketone, steps (1) and (2) may be carried out concurrently by using a cyclohexanol/cyclohexanone mixture obtained by the liquid-phase air oxidation of cyclohexane. Adipomononitrolic acid may be prepared by reacting cyclohexanone with nitric acid containing at least an equimolar quantity, based on the cyclohexanone, of NO2; the NO2 may be supplied by carrying out the reaction in the presence of cyclohexyl nitrite. Adipomononitrolic acid is also prepared by the action of nitric acid on cyclohexyl nitrite. Specification 633,354 is referred to. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2022174628-A1 |
| priorityDate | 1960-04-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 33.