| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_802cb425a297a0766bc7d8cdc2f03898 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D487-08 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D487-08 |
| filingDate |
1978-12-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
1980-11-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_97af1c9e2fc61140a1696b964aec095c
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_41adbb12dad93b88548393d042578d52 |
| publicationDate |
1980-11-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-4233447-A |
| titleOfInvention |
Process for purifying triethylenediamine |
| abstract |
A process is provided for recovering substantially pure triethylenediamine in liquid lower alkylene diol solutions directly from the crude triethylenediamine reaction mixture without resort to a need to purify the triethylenediamine by crystallization. The process includes initially admixing a lower alkylene diol with a crude triethylenediamine liquid reaction product mixture. The admixture thus formed is then heated to remove water and other low boiling impurities. The crude triethylene diaminediol bottoms mixture is then codistilled to recover a pure triethylene diamine product in diol solvent which can be used directly to catalyze urethane systems. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-1258485-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6552194-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2001064281-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6627756-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7345173-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2005044440-A3
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-1070717-A1 |
| priorityDate |
1978-12-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |