http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-2621878-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_8e0bf0928b608797b70bbc2b91c7e52e |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C45-80 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C47-127 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C45-80 |
| filingDate | 2011-09-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_427b1319f80e06a1d917d1a9350ed27a http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ad23b829e77ee2db9e970d6da0b9632c http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d0aca24095976f71770a51d2a2d6fcbf http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_eb4472218f7bb4f543bcb89d07757b8c |
| publicationDate | 2013-08-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | EP-2621878-A1 |
| titleOfInvention | Process for purifying aqueous glyoxal solutions |
| abstract | A process for purifying an aqueous glyoxal solution comprising at least one acid by extractive acid removal, comprising the steps of i) mixing and dispersion of the aqueous glyoxal solution with an ion exchanger solution comprising 20 to 60% by weight of a tertiary amine and 80 to 40% by weight of an organic solvent which does not have unlimited miscibility with water at a temperature of 30 to 100°C, ii) phase separation and removal of the ion exchanger solution laden with the acid from the aqueous glyoxal solution at temperatures of 30 to 100°C, and iii) regeneration of the ion exchanger solution by contacting with a basic compound for neutralization of the acid and removal of the basic compound, iv) mixing and dispersion of the ion exchanger solution with water to free it of salts formed in the neutralization to obtain a dispersion of water and ion exchanger solution, v) phase separation and removal of the aqueous phase from the ion exchanger solution, and recycling of the ion exchanger solution into step i), which comprises phase separation and removal of the aqueous phase in step v) in such a way that the content of the aqueous phase of the regenerated ion exchanger solution obtained in step v) is < 1% by weight. |
| priorityDate | 2010-10-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 54.