| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_0efa077d881a96aeb1e29b21ef1bbb58 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P20-582 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D307-08 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J21-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D307-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07B61-00 |
| filingDate |
1979-12-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
1981-04-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8817cad7c879536a868ccd78ef0b6995
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_55836865f41e94d29c2f9a2ada454fe1 |
| publicationDate |
1981-04-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-4261900-A |
| titleOfInvention |
Preparation of tetrahydrofuran |
| abstract |
A process for the preparation of tetrahydrofuran by heating a carboxylic acid diester of butane-1,4-diol in the gas phase at above about 160° C. in the presence of an aluminum oxide catalyst which is obtained by drying, at 70°-120° C., an aluminum hydroxide gel which has been precipitated from an aqueous aluminum sulfate solution by means of a basic agent. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5055599-A |
| priorityDate |
1978-12-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |