| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_03627f82d4edc6567f9627df6efdde5d |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C53-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C51-487
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C51-12 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C53-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-487
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07B61-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-12 |
| filingDate |
1996-09-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_0473877a1965174b14eb5cce12964845
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_80ea2c6633fd8e07115d28af49de0e48
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a044b3af6e15b52cb912587fdb766531
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9e699d8abeac3cfcd0a036630e673ffa
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9aa1965f5ebd85675d1c558b812414e8
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9b6b05f32a8a6eb60a68795f4ca0a94a
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f5d29433c610b3a2f5f31e4f2ce78551
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_20c01a925e41b6987525dbf07f52da87
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_989bc603d837e3cfb25f548524ca3017 |
| publicationDate |
1997-03-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
WO-9710198-A1 |
| titleOfInvention |
Removal of carbonyl impurities from a carbonylation process stream |
| abstract |
A process to reduce carbonyl impurities in a carbonylation reaction for the production of acetic acid is described. The methyl iodide recycle stream which is directed to a carbonylation reactor for carbonylating methanol or methyl acetate to acetic acid, is treated to remove carbonyl impurities by reacting the methyl iodide stream formed in the reaction with an aqueous amino compound which reacts with the carbonyls to form water soluble nitrogenous derivatives, separating an organic methyl iodide phase from an aqueous derivative phase and distilling the methyl iodide phase to remove heavier impurities. The treatment of the methyl iodide recycle stream to the carbonylation reactor has been found to greatly reduce the carbonyls present in the acetic acid product. The formation of nitrile from the nitrogenous derivative during distillation may be minimized by adding water to the system. |
| priorityDate |
1995-09-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |