http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-19980077010-A
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C63-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C51-42 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C63-06 |
| filingDate | 1997-04-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1998-11-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | KR-19980077010-A |
| titleOfInvention | Recovery method of ultra high purity benzoic acid from waste of terephthalic acid manufacturing process |
| abstract | The present invention relates to a method for recovering ultra-high purity benzoic acid from various unreacted and by-products of wastes produced in the production process of terephthalic acid, which is a raw material of polyester, and instead of using a catalyst having a ring-reducibility in the purification process of terephthalic acid. A mild catalyst having selective reducibility is used to reduce the production of 4-carboxybenzaldehyde and not to produce para-toluic acid, thereby obtaining high purity terephthalic acid and simultaneously recovering ultrapure benzoic acid from the waste. |
| priorityDate | 1997-04-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 27.