http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-113582869-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C231-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C269-04 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C233-56 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C271-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C269-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C231-02 |
| filingDate | 2021-09-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2022-06-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2022-06-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-113582869-B |
| titleOfInvention | Process method for producing oxamide and methyl carbamate in series |
| abstract | The invention discloses a process method for producing oxamide and methyl carbamate in series. The method takes urea, dimethyl oxalate and methanol as raw materials, two reactions with opposite thermodynamic characteristics are carried out in series, ammonolysis and alcoholysis reactions in a system are sequentially triggered by regulating and controlling material ratio and feeding sequence, the single-kettle yield of oxamide and methyl carbamate is greatly improved, and the content of byproducts such as ammonium methyl oxalate, methyl formate, N-methyl carbamate and urea acetal in the product is controlled to be below 1%. In addition, the method disclosed by the invention does not need to introduce a catalyst, so that the problem of separation of subsequent products and the catalyst is avoided, the production cost of the process is directly reduced, and the method has positive significance for conversion of oxalate and urea to high value-added chemicals. |
| priorityDate | 2021-09-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 44.