http://rdf.ncbi.nlm.nih.gov/pubchem/patent/RU-2388744-C2
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_d648658dd620f548c24de39659a5e9e3 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-235 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J19-24 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C63-26 |
| filingDate | 2005-08-29^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2010-05-10^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_de3576baf90359194560d3bd800dd8db http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d4d9b4e641e6f18414a6133625d6c560 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_70161090a1ab5b653f3295108c37112c http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_be7dc38c47702611c4d10e5867b0254c http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_792499b18bff6d113d1cbd23560ba524 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6b32243fdc7c48e5d098231c8f3aab9f |
| publicationDate | 2010-05-10^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | RU-2388744-C2 |
| titleOfInvention | Crude terephthalic acid composition and method of obtaining said composition |
| abstract | FIELD: chemistry. n SUBSTANCE: invention relates to liquid-phase catalytic oxidation of an aromatic compound and to the obtained crude terephthalic acid. Oxidation is carried out in a bubble column reactor which ensures a highly efficient process at relatively low temperature. Particles of the obtained terephthalic acid, which contains approximately less than 100 parts weight/million of 2,6-dicarboxyfluorenone, have transmission factor at 340 nm (%T 340 ) greater than approximately 25%, additionally contains approximately less than 12 parts weight/million of 4,4-dicarboxystilbene and/or contains approximately less than 400 parts weight/million of isophthalic acid. Particles of the obtained terephthalic acid, characterised by average size ranging from approximately 20 to approximately 150 micrometres, are dissolved in tetrahydrofuran for one minute to concentration of a least approximately 500 parts/million and/or is characterised by average BET surface area greater than approximately 0.6 m 2 /g. n EFFECT: product can be extracted and purified using methods which are cheaper than those which can be used if the acid is obtained via a high-temperature oxidation method. n 37 cl, 36 dwg, 5 tbl, 1 ex |
| priorityDate | 2004-09-02^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
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