Predicate |
Object |
assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_199450d8e2d705a2b559ce4c32e5dcb3 |
classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D11-0426 |
classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C59-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D11-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C57-15 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C12P7-56 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C55-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C57-13 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C12P7-44 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C51-48 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C51-412 |
classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C59-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-48 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C12P7-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D11-04 |
filingDate |
2012-12-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
grantDate |
2019-11-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e2287c9e19d4a40297260290bad2e500 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d91b345fa63d291fa9fcc185d8dd5ad5 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_cb9db9b439c5ae13b53e26040f469ff6 |
publicationDate |
2019-11-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
publicationNumber |
CA-2859707-C |
titleOfInvention |
Lactic acid extraction |
abstract |
The invention pertains to a method for recovering lactic acid from an aqueous mixture comprising the steps of - providing an aqueous mixture comprising lactic acid and at least 5 wt. % dissolved magnesium chloride, based on the total weight of water and dissolved material in the aqueous mixture, - extracting the lactic acid from the aqueous mixture into a first organic liquid comprising an organic solvent selected from the group consisting of C5+ ketones, diethylether and methyl-tertiary-butyl-ether, thereby obtaining an organic lactic acid solution and an aqueous waste liquid comprising magnesium chloride, and - extracting the lactic acid from the organic lactic acid solution into an aqueous liquid, thereby obtaining an aqueous lactic acid solution and a second organic liquid. The method according to the invention allows a combined purification and concentration step for feed solutions of lactic acid. |
priorityDate |
2011-12-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
type |
http://data.epo.org/linked-data/def/patent/Publication |