http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-2144869-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_7c3abccac7bae9414dc8ce09b2d192dc |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C231-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C231-24 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C231-22 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C231-24 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C233-31 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C231-22 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C231-06 |
| filingDate | 2008-05-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c3eeb254a3d928a29adba4bd21c93b3b http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_89f63f20e1cd3a83a1c59c531ec4de0d http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_01699053c5111d33d0a696ea3000dc07 |
| publicationDate | 2010-01-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | EP-2144869-A1 |
| titleOfInvention | Improved process for working up diacetone acrylamide solutions for the preparation of pure diacetone acrylamide |
| abstract | Improved process for working up diacetone acrylamide solutions, obtained by reaction of acetone or diacetone alcohol with acrylonitrile and sulfuric acid and subsequent dilution and neutralization, in which a) the organic phase obtained subsequent to the neutralization, which comprises the crude diacetone acrylamide, is hydrolyzed by addition of an aqueous alkaline solution in order to remove acrylamide, then b) after phase separation has been carried out, the organic phase, which comprises the crude diacetone acrylamide, is neutralized by addition of an acid, and c) in succession, low-boiling-point byproducts are removed by distillation in the presence of one or more polymerization inhibitors, then t-butylacrylamide is removed by distillation and, finally, the diacetone acrylamide is isolated by product distillation, and d) the diacetone acrylamide thus obtained is converted into its final form |
| priorityDate | 2007-05-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 85.