http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2020354305-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_2b3a5804607b36edd5ee6eb5f180fdeb http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_0ac806e1cce218e491867de37e4d3e25 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C68-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C269-00 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C68-00 |
| filingDate | 2018-03-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_262da2d1736d197646a3573361dc405b http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5b4300a3300c55ed2c208de105734053 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_0dc58954cc55c26077b4c54ef1dd141f http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5aaa33251f00f0239b24a2d93d675c3f |
| publicationDate | 2020-11-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | US-2020354305-A1 |
| titleOfInvention | Method for preparing dialkyl carbonate by alcoholysis of urea |
| abstract | A dialkyl carbonate is prepared by reacting urea with an alkyl monohydric alcohol at 70° C. to 150° C. under normal pressure or reduced pressure. The reaction is conducted for 6 h to 30 h under stirring and reflux, with one or more of magnesium, calcium, aluminum, chromium, manganese, iron, cobalt, nickel, copper and zinc as a primary catalyst and one or more compounds including an electron-donating nitrogen, phosphonis, oxygen or sulfur atom as a catalyst promoter. The dialkyl carbonate is prepared under low reaction temperature and normal pressure or reduced pressure, with high selectivity and high yield. With simple operations, high safety and low cost for the process, the method has prominent industrial application prospects. |
| priorityDate | 2018-02-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 173.