| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_387abf6afc9a2cd5cfa5cd4d35f8b9fe |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C265-14
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C265-12 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C263-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C269-04 |
| classificationIPCInventive |
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/C07C271-52
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C271-20 |
| filingDate |
2017-09-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate |
2019-03-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
EP-3459930-A1 |
| titleOfInvention |
Multistep process for the preparation of hexamethylene diisocyanate, pentamethylene diisocyanate or toluene diisocyanate |
| abstract |
The present invention relates to a multistep process for the preparation of organic diisocyanates by converting the corresponding diamine precursors, urea and hydroxy compounds into monomeric diurethanes, converting these diurethanes into diurethanes of high boiling hydroxy compounds, and finally cleavage of the latter diurethanes to form the diisocyanates and recover the high boiling hydroxy compounds. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-114507160-A |
| priorityDate |
2017-09-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |