http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-3362430-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_62071bb1d7a0effcd93df39b90ee28b1 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C59-185 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C51-43 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-43 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C59-185 |
| filingDate | 2016-10-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_57fb5642e9a81b1c777ec47022e0ac74 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4c566a66ef52975ea797f0e1803619e6 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6446a4c6746203a55c557f9efe75d35b http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b8588da2b4ac63d94683a9dae68d1381 |
| publicationDate | 2018-08-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | EP-3362430-A1 |
| titleOfInvention | Process for the purification of levulinic acid |
| abstract | The invention is directed to a process for the purification of levulinic acid comprising the following steps: a. Providing a composition 1, comprising at least 75 wt% of levulinic acid; b. Cooling composition 1 to at least one temperature Tc, wherein Tc is a temperature in the range 1.23*(W1) - 104.5 ≤ Tc (º C) ≤ 1.23*(W1) - 89.5, wherein W1 is the weight% of levulinic acid in composition 1, to obtain a cooled composition 1; c. Performing melt crystallization of composition 1 comprising the steps of: i. Bringing the cooled composition 1 into contact with levulinic acid crystal seeds, ii. Allowing the levulinic acid in composition 1 to crystallize at at least one temperature Tc to obtain crystals 1 and liquid 1, and iii. Draining of liquid 1; d. Optionally, treating crystals 1, after draining of liquid 1, by sweating, according to the following steps: i. Heating the crystals 1 at a temperature between 5 and 40 º C to obtain crystals 2 and liquid 2, and ii. Draining of liquid 2; e. Melting the crystals 1 or 2, after draining of liquid 1 or 2, to obtain composition 2, f. Determining the levulinic acid concentration in composition 2 and, in case the levulinic acid concentration is below a predetermined value, repeating steps b, c, optionally d, and e, as many times as necessary to obtain a final composition with a predetermined levulinic acid concentration. |
| priorityDate | 2015-10-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 62.