C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
202/84, 260/496.
C07C 53/08 (2006.01) C07C 45/82 (2006.01) C07C 45/85 (2006.01) C07C 51/573 (2006.01) C07C 53/12 (2006.01) C07C 69/16 (2006.01)
Patent
CA 1189086
ABSTRACT OF THE DISCLOSURE The disclosure relates to a process for removing acetone from reaction mixtures obtained by reacting methyl acetate and/or dimethylether with carbon monoxide and optionally hy- drogen at elevated temperatures to obtain acetic anhydride and optionally ethylidene diacetate in the presence of a catalyst system consisting of carbonyl complexes of noble metals belonging to group VIII of the Periodic System of the elements, acetic acid, an organophosphorus or organonitrogen compound, and methyl iodide in a molar ratio of 1 : (25 - 600) : (10 - 300) : (10 - 300) and optionally compounds of carbonyl- yielding common metals. More particularly, the invention pro- vides for the acetone obtained as a by-product during the reaction to be subjected to condensation at temperatures of 50 to 250°C, under pressures of 0.01 to 150 bars and at a molar ratio as above defined of 1 : (25 - 500) : (10-100) : (15 - 150) so as to obtain predominantly higher-boiling se- condary products, for these latter to be distillatively se- parated together with volatile constituents of the catalyst system; and for resulting distillate to be separated in a successive distilling zone into a low boiler mixture con- sisting of methyl iodide, unreacted methyl acetate and/or dimethylether and residual acetone, and into a base product consisting of acetic acid, acetic anhydride and optionally ethylidene diacetate, and the acetone secondary products.
415681
Erpenbach Heinz
Gehrmann Klaus
Horstermann Peter
Kohl Georg
Fetherstonhaugh & Co.
Hoechst Aktiengesellschaft
LandOfFree
Process for removing acetone from reaction mixtures of... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Process for removing acetone from reaction mixtures of..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for removing acetone from reaction mixtures of... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1322733