| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_5c24684033fba97d1ad845ce453a57e3 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01B25-237
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01B25-462
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01B25-461 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01B25-46
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01B25-234
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01B25-237 |
| filingDate |
1985-11-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_dd7d35773c3a86659edd87b946523188
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_aaacabcea7021357a6610ccd7eab23c0 |
| publicationDate |
1986-05-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
EP-0182171-A2 |
| titleOfInvention |
Process for removing impurities from phosphoric acid |
| abstract |
The present invention relates to a process for the removal of impurities from a wet process phosphoric acid which has been pre-cleaned by a liquid-liquid extraction with an organic solvent, by first removing the extractant residues from the latter, then stripping with steam or hot gas, then the acid with a dialkyldithiophosphate and a finely divided Bringing adsorbent into contact and finally treating the liquid phase with water vapor and hydrogen peroxide. |
| priorityDate |
1984-11-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |