http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-03057656-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_4b1aa2b8a570e7ceaa83e2a0eae6daea |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C51-46 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C51-48 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C53-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-48 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-46 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-42 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D3-34 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C57-04 |
| filingDate | 2003-01-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_dae5f78d1fff79216f6fa80025a7a52e http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_faff533d59bdab631193850788b22d9c http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_babd5d218104ca00aaca205318fec959 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6a7cd39edb568d0735d36d68e2216540 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ed2de220c3abbbdd19c391c366d19f76 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b78702b0d918f04014921afe68cf9823 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ce2f1f06d13ef9057f366a3442bd46e8 |
| publicationDate | 2003-07-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | WO-03057656-A1 |
| titleOfInvention | Acrylic acid recovery utilizing ethyl acrylate and selected co-solvents |
| abstract | A method of recovering acrylic acid from a mixture comprising acrylic acid, water and acetic acid is disclosed, which includes: (a) extracting acrylic acid from the mixture with a solvent mixture comprising ethyl acrylate as the preponderant component thereof and an organic co-solvent selected from the group consisting of toluene, heptane, 1-heptene, methylcyclohexane, cycloheptane, cycloheptadiene, cycloheptatriene, 2,4-dimethyl-1,3 pentadiene, methylcyclohexene and methylenecyclohexene to form an extracted composition; and (b) azeotropically distilling the extracted composition to recover acrylic acid. Also disclosed is an alternate method of recovering acrylic acid which includes: (a) providing a feed stream containing acrylic acid, water, acetic acid, ethyl acrylate and an organic co-solvent selected from the group consisting of toluene, heptane, 1-heptene, methylcyclohexane, cycloheptane, cycloheptadiene, cycloheptatriene, 2,4-dimethyl-1,3 pentadiene, methylcyclohexene and methylenecyclohexene to a distillation column, wherein the weight ratio of ethyl acrylate to the organic co-solvent is from about 80:20 to about 95:5; and (b) azeotropically distilling said feed stream to provide an acrylic acid residue stream. A further embodiment of this invention involves directing the recovered acrylic acid stream to a distillation tower wherein a vapor or liquid side stream is obtained having a purity level of acrylic acid of at least 99%. This material can be subsequently further purified to obtain glacial acrylic acid having a purity of at least 99.8%. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10029976-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2015197197-A1 |
| priorityDate | 2002-01-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 153.