http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2022380303-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_efbc93fa15ca59046e84ca5c5c84c433 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F04C19-004 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D3-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C263-20 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D3-106 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C263-20 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D3-10 |
| filingDate | 2020-09-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_37a5375dd73a9456304d59ce43624922 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c1ce13eeab5070bf498f79e9df9a6ac3 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_74ad05080b12b4dc7d62e1f620c2d12f http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_59315913d3d286dd4e857f0daba2baa3 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9d89131163988621f25b0169131d14ee http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_eed9e2943bc10691273c98c56305a800 |
| publicationDate | 2022-12-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | US-2022380303-A1 |
| titleOfInvention | Process for the distillation of isocyanates |
| abstract | The present invention relates to a process for distillative purification of a crude isocyanate obtained by phosgenation of the corresponding amine in a distillation apparatus under vacuum to obtain the corresponding isocyanate, characterized in that at least one liquid ring compressor is used to generate the vacuum in the distillation apparatus, a particular operating liquid is used for the at least one liquid ring compressor, the pressure p on the suction side of the at least one liquid ring compressor is 10 to 200 mbar(a), the operating temperature of the at least one liquid ring compressor is −17° C. to +15° C. and the operating liquid at the exit from the at least one liquid ring compressor has an AC value of less than 35 000 ppm, to a corresponding use of at least one liquid ring compressor for generating a vacuum in an apparatus for distillation of a crude isocyanate and to a corresponding process for operating a liquid ring compressor for providing the vacuum for distillative purification of an isocyanate obtained by phosgenation of the corresponding amine in a distillation apparatus to obtain the corresponding isocyanate. |
| priorityDate | 2019-09-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 204.