| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_696ca0ae93d5cf5a686273601361781f |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C51-235 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C63-307
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07B61-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J27-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C63-313
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-235
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J27-128
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-265 |
| filingDate |
2001-06-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_bf642a3432bc4de1837e375c3220d145
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6e26af8e5b0b3ae0c745ed0dac526f13
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a2de52c75cd90b0a1a0abf0bbbc54f86
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_3adced8f537391557cf3243bc79d58c3
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f5ebc9f498f342d8241fd073984f5fe8 |
| publicationDate |
2002-01-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
EP-1167335-A2 |
| titleOfInvention |
Process for producing aromatic polycarboxylic acid |
| abstract |
A process for producing a polycarboxylic acidnwhich comprises performing liquid phase oxidation ofnpolyalkyl-substituted aromatic aldehyde and/or oxidenderivative of polyalkyl-substituted aromatic aldehyde asnraw material for oxidation with molecular oxygen at twonstages in water solvent in the presence of a catalystncomprising bromine or both bromine and a heavy metal(s)nat a temperature of 180 to 280 °C , thereby producingntrimellitic acid or pyromellitic acid, wherein saidnliquid phase oxidation is performed in a continuousnoperation at the first stage and in a continuousnoperation or in a batch operation at the second stagenand a total amount of bromine in said catalyst isndivided to add separately at each the first stage andnthe second stage. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-1398307-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-2269973-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-2269973-A4
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6835852-B2 |
| priorityDate |
2000-06-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |