| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_a22da5b7dd6ed60a21538e5edb23e051 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P20-582 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C231-14
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C231-12
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C209-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C269-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C231-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C263-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C209-62
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G18-341 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C263-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G18-34 |
| filingDate |
1992-10-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
1993-08-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_3bc59ad0f83a95bfe5ab074e1d0cefd2
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_38004867e7a9ba87ef62564ec6180b94
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7988c0a7acfbd0c40f83cb55ace71965 |
| publicationDate |
1993-08-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-5233010-A |
| titleOfInvention |
Process for preparing isocyanate and carbamate ester products |
| abstract |
A process for preparing an isocyanate having at least two -N=C=O groups is provided which comprises preparing a substituted aromatic amine having at least two -NH2 groups, recovering the substituted aromatic amine having at least two -NH2 groups, and preparing an isocyanate from the substituted aromatic amine having at least two -NH2 groups by (1) contacting the substituted aromatic amine with CO2 under conditions sufficient to produce the corresponding ammonium carbamate salt, and reacting the ammonium carbamate salt with an electrophilic or oxophilic dehydrating agent under conditions sufficient to produce the corresponding isocyanate, or (2) contacting the substituted aromatic amine with CO2 under conditions sufficient to produce the corresponding ammonium carbamate salt, reacting the ammonium carbamate salt with a primary or secondary hydrocarbyl halide in a polar aprotic solvent under conditions sufficient to produce the corresponding carbamate ester, and cracking the carbamate ester under conditions sufficient to produce the corresponding isocyanate. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9069259-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9329486-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9029268-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9243218-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2004039181-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8440389-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2009186793-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-105153059-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9158202-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2010221503-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8987181-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6156932-A |
| priorityDate |
1992-10-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |