http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-3524591-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_387abf6afc9a2cd5cfa5cd4d35f8b9fe http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_49e2d2c78f1756794d18b135d883b2e7 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C265-14 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C263-10 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C263-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C265-14 |
| filingDate | 2018-02-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2019-08-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | EP-3524591-A1 |
| titleOfInvention | Process for the preparation of isocyanates |
| abstract | The invention relates to a process for the preparation of aliphatic, cycloaliphatic or araliphatic isocyanates by reacting at least one primary organic amine with a stoichiometric excess of phosgene in the gas phase, comprising the steps a) reaction of the primary organic amine with an excess of phosgene in the gas phase and quenching the process product with a liquid comprising an inert aromatic solvent to obtain a liquid stream containing the isocyanate and a gas stream containing HCl and phosgene, b) separation of the gas stream containing HCl and phosgene obtained in step a) into a gas stream containing HCl and a liquid stream containing phosgene, c) partial vaporization of the liquid stream containing phosgene obtained in step b) to produce a gas stream containing phosgene, d) the gas stream containing phosgene obtained in step c) is at least partially recycled into the reaction in step a), and wherein the gas stream containing phosgene obtained in step c) contains 0.5 wt% or less of the sum of benzene, chlorobenzene and dichlorobenzene. The invention additionally relates to an isocyanate composition. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-4227291-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2023152039-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-111548287-A |
| priorityDate | 2018-02-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 85.