| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_46ffc67cd29dd51dbd0bc0e335dd3994 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C67-48
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C67-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C67-54 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C67-56
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C67-54
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C67-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C67-48
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C69-14 |
| filingDate |
1999-04-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d21c79d1bfe99c489776fe14a561ff98
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_cb12a8aba44773b8e036e1aab73e89fb
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9f1d822324a74db20fea88c703f7692c |
| publicationDate |
1999-10-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
CA-2270136-A1 |
| titleOfInvention |
Purification process |
| abstract |
This invention is a process for the removal of acetaldehyde impurities from ethyl acetate formed by reacting acetic acid with ethylene over a catalyst by refining a crude mixture of ethyl acetate, diethyl ether, acetaldehye and water in a column (C) so as to remove (a) refined ethyl acetate as a base product to be further purified, and (b) light ends mixture comprising diethyl ether and acetaldehyde overhead to be fed to an aldehyde removal column; a purge comprising acetaldehyde is removed at or near the top of the aldehyde removal column The process is a very important step in the commercial manufacture of ethyl acetate because the presence of acetaldehyde is detrimental to the esterification catalyst |
| priorityDate |
1998-04-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |