http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9045406-B2
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_24aca9ded2638ea793d05360dde7a4a0 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C57-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J23-28 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C51-16 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C51-252 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-25 |
| filingDate | 2013-03-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2015-06-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c50f1a37732ef876044b6c6179339100 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a091daeb566209fd7e3dd0a189f4d97b |
| publicationDate | 2015-06-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | US-9045406-B2 |
| titleOfInvention | Process for producing alkyl methacrylate |
| abstract | An object of the present invention is to provide a process for producing methacrylic acid with good productivity over a long period of time. n The present invention provides a process for producing methacrylic acid by oxidizing methacrolein with oxygen in a continuous manner, comprising supplying a mixed gas containing methacrolein, isobutylene and oxygen and having a content of isobutylene of 300 to 3000 volume ppm, initiating the oxidation so that the methacrolein conversion at an outlet of a reactor becomes at least 85% and, thereafter, continuing the oxidation while the mixed gas having a content of isobutylene of 300 to 3000 volume ppm is supplied until a difference (X1−X2) between methacrolein conversion (X2) at the outlet of the reactor and methacrolein conversion (X1) at the outlet of the reactor at the time of the initiation of oxidation comes into the range of 2 to 30%, and continuing the oxidation while the mixed gas having a content of isobutylene of 500 volume ppm or less is supplied, after the difference (X1−X2) comes into the range of 2 to 30%. |
| priorityDate | 2012-03-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 133.