| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_6cfc033f059d282fcd915bc8be2ae53f |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C263-04 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C265-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C263-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C265-14
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C265-12
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C-
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J31-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J31-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07B61-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J31-16
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C67-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C241-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G18-76 |
| filingDate |
1976-08-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
1980-07-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_0d0605e95cf492ff4e95ccd421e01d64
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_69ca5475038c4c561657bba14ea23e96
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_dced472e747925392cfcdf18e10fb052 |
| publicationDate |
1980-07-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
CA-1082728-A |
| titleOfInvention |
Process for preparation of aromatic isocyanates |
| abstract |
A PROCESS FOR PREPARATION OF AROMATIC ISOCYANATES ABSTRACT OF THE DISCLOSURE A process is described for preparing aromatic isocyanates by contacting an aromatic carbamate of the formula R(NHCO2R')n at 150-350°C under reduced pressure with one or more metal or metal compound catalysts dissolved in an inert solvent. In the formula R is a divalent aromatic, R' is a monovalent aliphatic, alicyclic or aromatic with at most 8 carbon atoms and n is 1 or 2. The metal is dissolved in a concentration of at least 1/1000% by weight of the solvent. The vapors of the resulting aromatic isocyanate and alcohol or phenol are fractionally condensed under reduced pressure and the aromatic isocyanate is separately collected. |
| priorityDate |
1975-08-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |