http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0016441-A2
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_75a9b43328a2cbfcf60da8b223a321c7 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C271-06 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C239-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C67-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C271-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C269-00 |
| filingDate | 1980-03-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_80c0f4342b8238b248b88a5982b6be5d http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_54e239a81160a1f86d8a685ad5732fdc |
| publicationDate | 1980-10-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | EP-0016441-A2 |
| titleOfInvention | A method for the preparation of a mixture of diphenyl methane dicarbamates and polymethylene polyphenyl carbamates |
| abstract | A method for increasing the4,4' disubstituted isomer of the diphenylmethane dicarbamates produced by the acid catalyzed condensation of an N-aryl carbamic acid ester, such as ethylphenylcarbamate,with a carbonyl compound, such as formaldehyde, which comprises carrying out the condensation in a single phase system with a dilute solution of the N-aryl carbamic acid ester in an inert solvent having a dielec- tricconstantof at least20 at20°C. The solvent must have good solubility for the carbamates, which carbamates are employed in the solvent at concentrations of from about 0.1 to 50 weight per cent to provide a product enriched with the 4,4' diphenylmethane dicarbamate isomer. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/FR-2649103-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0410900-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0032733-B1 |
| priorityDate | 1979-03-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 111.