http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-3931316-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_ecde08b86ab7c9b49cd8213226e8306b |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C273-00 |
| classificationIPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C275-70 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C273-00 |
| filingDate | 1974-12-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 1976-01-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2326b5562b4ea61b7202d2e6550bffc1 |
| publicationDate | 1976-01-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | US-3931316-A |
| titleOfInvention | Method of preparing O-methyl-isourea hydrogen sulfate and O-methyl-isourea sulfate from cyanamide |
| abstract | O-Methyl-isourea hydrogen sulfate is prepared from cyanamide, methanol, and sulfuric acid in a yield of better than 90% when crystalline cyanamide is added to a mixture of sulfuric acid and methanol containing 50 - 150 parts by weight methanol per part sulfuric acid and holding the resulting composition at -10° to 20°C. The recovered O-methyl-isourea hydrogen sulfate is further converted to O-methyl-isourea sulfate with yields greatly exceeding 50%, and even 80%, by holding a mixture of approximately equimolar amounts of cyanamide and of the hydrogen sulfate in a liquid medium essentially consisting of methanol at 5° to 40°C until the O-methyl-isourea sulfate is formed and can be recovered. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2005171372-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2018210633-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5705666-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7105694-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-113387843-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-1486484-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2748170-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-1486484-A4 |
| priorityDate | 1974-08-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 48.