http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0204668-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_9f6e45fa92da6f52f758b99b17516efa |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C209-84 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C201-16 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C209-84 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C- http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C211-52 |
| filingDate | 1986-05-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ed95cb0c310132387592ca54c2dbfd90 |
| publicationDate | 1986-12-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | EP-0204668-A1 |
| titleOfInvention | An improved process for purifying crude trifluralin |
| abstract | @ The level of the nitrosamines which may be present in the unrefined trifluralin is reduced to a value below 0.5 ppm, by treating the unrefined trifluralin under agitation, at a temperature from 60 to 90°C, for a time between 10 minutes and 4 hours, with an aqueous solution containing from 15 to 50% by weight of hydrobromic acid in a ratio of 0.2 to 0.8 liters per kilogram of unrefined trifluralin, said aqueous solution of hydrobromic acid being added with an amount of sulphamic acid from 0.1 to 3 g per liter of solution and with an amount of bisulphite of an alkaline metal corresponding to a content of sulphur dioxide from 0.3 to 1.2 g per liter of said hydrobromic acid aqueous solution. n The so obtained refined trifluralin has a content of nitrosamines which is lower than 0.1 ppm. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0254009-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0479384-A1 |
| priorityDate | 1985-06-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 28.