| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_1374dd16777534b65ad4422333245af8 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C201-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J37-20
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J37-28
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J27-16
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J27-02 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C201-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J37-20
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J27-16
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C201-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J37-28
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C67-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C205-12
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J21-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J27-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07B61-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J27-02 |
| filingDate |
1974-02-25^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate |
1976-12-31^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
GB-1459858-A |
| titleOfInvention |
Nitration of halobenzenes |
| abstract |
1459858 Nitration of halobenzenes TEIJIN Ltd 25 Feb 1974 [26 Feb 1973] 8457/74 Heading C2C A process for nitrating halogenated benzene derivatives comprises reacting a halogenated benzene derivative with nitric acid in the liquid phase in the presence of a catalyst composed of an oxyacid of sulphur or phosphorus supported on silica-alumina and/or alumina. Preferably the catalyst is one prepared by impregnating the carrier with sulphuric acid or phosphoric acid, and then calcining it at a temperature of at least 100 C. The reaction is preferably carried out at room temperature to about 100 C., and the nitric acid is preferably used in an amount of 5 to 50 mol. per cent based on the halogenated benzene. After the reaction, the catalyst is preferably separated by filtration and the product is preferably separated by distillation. |
| priorityDate |
1973-02-26^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |