http://rdf.ncbi.nlm.nih.gov/pubchem/patent/DE-2323109-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_2a7abf53561f08a23d8d73afa0c7a892 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P20-584 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J23-94 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C37-07 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C37-84 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C37-84 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J23-94 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C37-07 |
| filingDate | 1973-05-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_df58719843ccae7bc172d2582d8af1d2 |
| publicationDate | 1974-11-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | DE-2323109-A1 |
| titleOfInvention | METHOD FOR MANUFACTURING NAPHTHOL |
| abstract | Title cpd. a starting matl. for may pigments and for naphthylcarbamate insecticides and an antioxidant for rubbers, can be prepd. by catalytic dehydrogenation of 1-tetralone. The present invention describes an improved process which gives less useless by-prods., better conversion efficiency, longer catalyst life (both between regenerations and in total) than previous known methods; it also avoids the use of flammable solvents. The 1-tetralone vapour, mixed with H2O vapour, is passed over the catalyst (Cr-Ni or Nikieselguhr) at 250-370 degrees, the catalyst having been pretreated with a 3-6% soln. of Na2SO4. This gives a liquid from which addn. of CCl4, trichlorethylene, or a mixt. of these ppts. 1-naphthol, which can be recryst. and unchanged 1-tetralone can be distilled for re-use. The catalyst is regenerated by passing H over it. |
| priorityDate | 1973-05-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 32.