http://rdf.ncbi.nlm.nih.gov/pubchem/patent/TW-467894-B
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_1e70c0aeade92d7571d955d3b90ea06e |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C51-43 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-43 |
| filingDate | 1998-06-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2001-12-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a17ef86df0a1b510a2ec22a4875adf88 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_51e35396ab048c2536ef3fc8cbc8cdfe |
| publicationDate | 2001-12-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | TW-467894-B |
| titleOfInvention | Improved method for producing crystalline carboxylic acids and apparatus therefor |
| abstract | Improved process for producing purified aromatic carboxylic acid in the form of dried crystals which comprises cooling the crystals in a fluidized state after the drying step to a temperature at or below 100 DEG C prior to packaging and an apparatus therefor. The process comprises: (I) Producing a crude aromatic carboxylic acid by liquid phase oxidation of a precursor of the said aromatic carboxylic acid in an aliphatic carboxylic acid solvent; (ii) recovering the crude aromatic carboxylic acid oxidation product, and dissolving said oxidation product in water; (iii) purifying the dissolved oxidation product, and recovering the purified product from the aqueous solution in the form of crystals; (iv) drying the purified crystals at an elevated temperature in the range of from 100 DEG C up to 180 DEG C; and (v) transferring the dried crystals to a silo for storage, the improvement comprising cooling the purified acid crystals in a fluidized state to a temperature below 100 DEG C prior to, while or after transferring said purified crystals to said silo. |
| priorityDate | 1997-04-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 29.