| 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/C07C51-412
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D11-04
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/C07C55-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C57-15
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C59-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C57-13
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C12P7-56 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C55-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C57-15
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C12P7-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D11-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-48
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C57-13 |
| filingDate |
2012-12-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
2016-01-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d91b345fa63d291fa9fcc185d8dd5ad5
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e2287c9e19d4a40297260290bad2e500
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_cb9db9b439c5ae13b53e26040f469ff6 |
| publicationDate |
2016-01-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
AU-2012356770-B2 |
| titleOfInvention |
Polycarboxylic acid extraction |
| abstract |
The invention pertains to method for recovering polycarboxylic acid from an aqueous mixture comprising the steps of: providing an aqueous mixture comprising polycarboxylic acid and at least 5 wt.% dissolved halide salt, based on the total weight of water and dissolved material in the aqueous mixture, extracting the polycarboxylic acid from the aqueous mixture into a first organic liquid comprising an organic solvent selected from the group consisting of ketones and ethers, thereby obtaining an organic polycarboxylic acid solution and an aqueous waste liquid comprising the halide salt, and extracting the polycarboxylic acid from the organic carboxylic acid solution into an aqueous liquid, thereby obtaining an aqueous polycarboxylic acid solution and a second organic liquid. The method according to the invention allows a combined purification and concentration step for feed solutions of polycarboxylic acids. |
| priorityDate |
2011-12-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |