http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2013203668-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_24aca9ded2638ea793d05360dde7a4a0 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C51-16 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C51-252 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C57-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J23-28 |
| classificationIPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07B61-00 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-235 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C57-055 |
| filingDate | 2012-03-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a091daeb566209fd7e3dd0a189f4d97b http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c50f1a37732ef876044b6c6179339100 |
| publicationDate | 2013-10-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-2013203668-A |
| titleOfInvention | Method for producing methacrylic acid |
| abstract | A method for producing methacrylic acid with high productivity over a long period of time is provided. A method for producing methacrylic acid by oxidizing methacrolein with oxygen in a continuous manner, comprising a mixed gas containing methacrolein, isobutylene and oxygen and having an isobutylene content of 300 to 3000 ppm by volume. And then starting the oxidation so that the methacrolein conversion rate at the reactor outlet is at least 85%, then methacrolein conversion rate (X2) at the reactor outlet and methacrolein at the reactor outlet at the start of the oxidation. The oxidation is continued while supplying the mixed gas having an isobutylene content of 300 to 3000 ppm by volume until the difference (X1-X2) from the conversion rate (X1) is 2 to 30%, After the difference (X1-X2) becomes 2 to 30%, the content of isobutylene is 500 ppm by volume or less. While supplying the engagement gas characterized by continuing said oxidation. [Selection figure] None |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2018150797-A1 |
| 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: 129.