http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2009043124-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_4bece1cdc2c5e70b4ac4ee46740f46c6 http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_6c7b49ec79400b4b01b1b4ede9305c5b http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_bbb527ce101121533a39ede279f966e0 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C51-265 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-23 |
| filingDate | 2006-05-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_3280f694de71d0d88eaeb76b17b3b933 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_480340fb6430ed163b69d44f0fee2def http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1eb38f0c509a21a381cfa28d68ccf118 |
| publicationDate | 2009-02-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | US-2009043124-A1 |
| titleOfInvention | Process for the production of trimellitic acid |
| abstract | Trimellitic acid is produced by oxidation of pseudocumene in acetic acid at temperatures between 130 and 240° C. in the presence of a catalyst composition containing cobalt, manganese and bromine. The process comprises the stages of:n (i) simultaneously feeding pseudocumene and air or an oxygen-containing gas into a solution containing acetic acid and the catalyst composition, at an addition rate resulting in an oxygen concentration in the off-gas of less than 8 vol %, and at a temperature and a pressure sufficient to result in 5 to 25 mol % of the total amount of oxygen required to oxidize the pseudocumene to trimellitic acid being consumed, and (ii) feeding air or an oxygen-containing gas into the reaction mixture obtained in stage (i) until essentially all of the pseudocumene has been consumed and a molar yield of trimellitic acid of at least 90% has been obtained. nn There is no supplementation of catalyst after stage (i). |
| priorityDate | 2005-05-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 74.