| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_c7ad58d3c0b071069a8ee0cb8c8ba2e8 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G71-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C269-04 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C271-28
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C269-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C269-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C265-14
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C263-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G71-04 |
| filingDate |
1992-12-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4a3c6e8e1f9bfb38dac995bb46ffe2e1
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1d7043b12d9bf08abfc88d990e1487df
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5c791c74c5c639c2d747e52f0c9b521b |
| publicationDate |
1993-06-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
EP-0547444-A1 |
| titleOfInvention |
Process for the preparation of high-purity aromatic di- and/or polyurethanes |
| abstract |
The invention relates to a process for the preparation of high-purity aromatic di- and / or polyurethanes by reacting the corresponding aromatic di- and / or polyamines with unsubstituted carbamates with the release of ammonia, the reaction being carried out in the presence of excess carbamates, the after The reaction mixture present is freed of any solvent used and the aromatic di- and / or polyurethanes formed are purified by extraction with water. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0818441-A1 |
| priorityDate |
1991-12-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |