| 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 |
1975-03-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
1976-11-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_90c2b4b872516760a9d17f825f3ba8e4 |
| publicationDate |
1976-11-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-3993651-A |
| titleOfInvention |
Triethylenediamine recovery |
| abstract |
A process is provided for recovering substantially pure triethylenediamine in liquid propylene glycol solutions directly from a crude triethylenediamine reaction mixture without the need to purify the triethylenediamine by crystallization. The process includes initially admixing propylene glycol with a crude triethylenediamine liquid reaction product mixture. The admixture thus formed is then distilled under conditions such that the triethylenediamine and propylene glycol codistill. The codistillate is then collected as the substantially pure triethylenediamine solute in liquid propylene glycol solution. The collected codistillate being substantially free of reaction by-products can be used directly to catalyze urethane systems. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-1223172-A3
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2004186291-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-1223172-A2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7151177-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-103664964-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6552194-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2004220405-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4233447-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7074926-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-102584833-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6627756-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7345173-B2 |
| priorityDate |
1975-03-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |