http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0941984-A3
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_696ca0ae93d5cf5a686273601361781f |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C69-54 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C67-20 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C253-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01C3-0241 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C67-327 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C231-06 |
| classificationIPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C235-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C255-12 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01C3-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C231-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C67-20 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C69-675 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C69-54 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C67-327 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C253-00 |
| filingDate | 1999-02-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ce4fb926f590fc37eb73dc519aca6684 |
| publicationDate | 2000-04-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | EP-0941984-A3 |
| titleOfInvention | Method of producing a methyl methacrylate |
| abstract | A method of producing methyl methacrylate comprises Step 1 ofnproducing acetone cyanhydrin from hydrogen cyanide and acetone; Step 2 ofnproducing α-hydroxyisobutyramide by hydrating acetone cyanhydrin; Step 3 ofnproducing methyl α-hydroxyisobutyrate and ammonia by a reaction ofnα-hydroxyisobutyramide and methanol; Step 4 of producing methyl methacrylatenby dehydrating methyl α-hydroxyisobutyrate; and Step 5 of producingnhydrogen cyanide in vapor phase by reacting methanol and the ammonianobtained in Step 3 over a solid catalyst in the presence of molecular oxygen.nBy using methanol in the step 3, the conversion ratio ofnα-hydroxyisobutyramide into methyl α-hydroxyisobutyrate can be increasednbecause the equilibrium of the reaction is easily sifted toward the product sidenby removing ammonia being produced from the reaction system. The use ofnmethanol in the step 3 produces additional advantages of efficiently linking thensteps to eliminate the steps for separation and purification, thereby reducingnthe production cost. |
| priorityDate | 1998-03-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 46.