Loading patent…
AssigneeAir Products and Chemicals, Inc.
InventorsDorai Ramprasad, Francis Joseph Waller
Estimating the term…
This invention relates to a process for producing ethylidene diacetate by the reaction of acetic anhydride, acetic acid, hydrogen and carbon monoxide at elevated temperatures and pressures in the presence of an alkyl halide and a heterogeneous, bifunctional catalyst that is stable to hydrogenation and comprises an insoluble polymer having pendant quaternized heteroatoms, some of which heteroatoms are ionically bonded to anionic Group VIII metal complexes, the remainder of the heteroatoms being bonded to iodide. In contrast to prior art processes, no accelerator (promoter) is necessary to achieve the catalytic reaction and the products are easily separated from the catalyst by filtration. The catalyst can be recycled without loss in activity.
A process for producing ethylidene diacetate which comprises reacting acetic anhydride, hydrogen, carbon monoxide and acetic acid in the presence of an alkyl iodide and a bifunctional catalyst that is stable to hydrogenation and comprises an insoluble polymer having pendant quaternized heteroatoms, some of which heteroatoms are ionically bonded to anionic Group VIII metal complexes, the remainder of the heteroatoms being bonded to iodide, under conditions sufficient to form ethylidene diacetate and recovering the formed ethylidene diacetate.
A process for producing ethylidene diacetate which comprises reacting acetic anhydride, hydrogen, carbon monoxide and acetic acid in the presence of methyl iodide and a bifunctional catalyst that is stable to hydrogenation and comprises an insoluble polymer having quaternized pyridine groups, some of which pyridine groups are ionically bonded to Rh(CO).sub.2 I.sub.2 !.sup.-, the remainder of the pyridine groups being bonded to iodide, under conditions sufficient to form EDA and recovering the formed EDA.
Dependencies are inferred from the claim text.