http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-S56120637-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_696ca0ae93d5cf5a686273601361781f |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P20-52 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J23-34 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-255 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C63-26 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J23-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C67-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07B61-00 |
| filingDate | 1981-02-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_26b5c04db6950ca75f2b171a812ca260 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_465e731b3860c67c0c100e39233c544f |
| publicationDate | 1981-09-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-S56120637-A |
| titleOfInvention | Preparation of high-purity terephthalic acid |
| abstract | PURPOSE: To obtain high-purity terephthalic acid for direct polymerization, by the oxidation of p-tolualdehyde with molecular oxygen, in the presence of water and Mn, Ce, a bromine compound and a mineral acid in a specific proportional as a catalyst. n CONSTITUTION: p-Tolualdehyde is oxidized with molecular oxygen in the presence of water as a solvent, heavy metallic catalysts and a bromine compound. As the heavy metallic catalysts, Mn and Ce are used and the bromine compound is maintained at 0.5W12wt% based on the reaction solution as bromide ions, and the g- equivalent of the hydrogen ions of the mineral acid is maintained at 1W85% based on the total g-equivalent of hydrogen, Mn and Ce ions, and the total g-equivalent of hydrogen ions, Mn and Ce is maintained at 0.5W5 times that of g-equivalent of bormine ions. n COPYRIGHT: (C)1981,JPO&Japio |
| priorityDate | 1981-02-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 33.