http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-101415483-B1
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C51-265 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C63-26 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C51-47 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-265 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C63-26 |
| filingDate | 2007-12-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2014-07-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2014-07-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | KR-101415483-B1 |
| titleOfInvention | Method for producing isophthalic acid |
| abstract | Isophthalic acid is subjected to solid-liquid separation to obtain a mother liquor. (1) The mother liquor is adjusted to a bromine ratio of 0.3 to 3 and then brought into contact with a pyridine ring-containing chelating resin heated at 35 to 140 ° C to form a heavy metal ion (2) contacting the pyridine ring-containing chelating resin having undergone the adsorption step with a water acetic acid having a water concentration of 1 to 15% by weight to form a mixture containing the by-produced carboxylic acid mixture An eluting step (A) for obtaining an eluent, (3) an eluting step (B) for obtaining an eluent containing heavy metal ions and bromide ions derived from the catalyst, and (4) a series of replacement steps for regenerating the pyridine ring- Wherein the catalyst is recovered and at least a part of the catalyst is reused for the liquid phase oxidation reaction. |
| priorityDate | 2006-12-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 119.