| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_c1244030b40cabe6f4fd81e13fb24385 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D487-08 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07B61-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D487-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J27-188 |
| filingDate |
1991-03-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2870de6eb23fed3b8c9ff46a953cfcc9
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_58da54310af52f80dee84593a838bc93 |
| publicationDate |
1991-10-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
EP-0454305-A1 |
| titleOfInvention |
Method for manufacture of triethylenediamine |
| abstract |
Triethylenediamine can be obtained by contacting an aqueous solution containing 5 to 50 wt.% of a N-hydroxyethyl piperazine having the formula:n n wherein R is CH₂CH₂OH or hydrogen, with a titania-supported tungstopyrophosphate catalyst cyclization catalyst, preferably comprising 0.01 to 10 wt% of phosphorus and 0.1 to 30 wt% of tungsten, at a temperature of 250 to 400°C. |
| priorityDate |
1990-04-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |