| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_f16f3beb32124135db9ff8fca4e3c8b5 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C253-20
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J27-12 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C255-33
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C67-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J21-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07B61-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C323-62
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C313-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C255-32
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C255-50
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C255-49
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C255-54
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J27-12
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C253-00 |
| filingDate |
1982-05-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
1984-03-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7578a901d1ae0a1ef05b5fe67a6d75c5
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e1ce12f880f49bb04b59a16ca084c6a0
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_458fc5133674908d0c445bd545037d84 |
| publicationDate |
1984-03-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-4438042-A |
| titleOfInvention |
Preparation of aromatic/aliphatic nitriles |
| abstract |
Aromatic/aliphatic nitriles having the formula: Ar-A-CN (I) wherein Ar is phenyl or substituted phenyl and A is a direct chemical bond or a hydrocarbon having from 1 to 6 carbon atoms, are conveniently prepared by heating to a temperature ranging from about 450 DEG C. to about 550 DEG C. a formamide or formanilide having the formula: Ar-A-NHCHO (II) or an amide having the formula: Ar-A-CONH2 (III) in the presence of a fluorinated siliceous catalyst, said catalyst having been prepared by (i) impregnating a particulate silica prepared by the precipitation of sodium silicate with sulfuric acid, with a dilute aqueous solution of hydrofluoric acid, said hydrofluoric acid solution having a concentration in HF of less than about 5% by weight, and the ratio by weight of the hydrofluoric acid contained in said aqueous solution thereof to the silica being less than about 5%, followed by (ii) drying the catalyst thus impregnated. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5075486-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4504595-A |
| priorityDate |
1981-05-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |