http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9126917-B2
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_d6660167441edb2ac3d2d8445b278307 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C47-565 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C45-80 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C45-80 |
| filingDate | 2012-12-13^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2015-09-08^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_3220e26ff5215275a7159f01773ab5df http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_890192437e759970eb3bcfac02518078 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5cf90acbdbc8f68fc242990d473bb736 |
| publicationDate | 2015-09-08^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | US-9126917-B2 |
| titleOfInvention | Method for purifying vanillin by liquid-liquid extraction |
| abstract | A method is described for purifying vanillin, and derivatives thereof, from an initial solution of vanillin or of a vanillin derivative in a solvent S1 containing impurities, comprising the following steps: a) a step of evaporating the solvent S1 in the presence of water from such initial solution to obtain an aqueous solution of vanillin or of a vanillin derivative; b) a step of liquid/liquid extraction by bringing the aqueous solution obtained at the end of step a) into contact with a solvent S2, at a pH of greater than 8 and less than 10, to obtain an organic phase and an aqueous phase containing vanillin or a vanillin derivative and residual solvent S2; c) a step of precipitating, at a pH between 4 and 7.5, the vanillin contained in the aqueous phase obtained at the end of step b); and d) a step of isolating the vanillin or derivative thereof. |
| priorityDate | 2011-12-15^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
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