Patent ID: 8513469
Filing Date: 2013-08-20
Classification: C07C

Abstract:
1. A hydroformylation process for continuous production of at least one aldehyde product, the process comprising the steps of: contacting under continuous reaction conditions in a hydroformylation reaction fluid, one or more olefinically-unsaturated compounds, carbon monoxide, and hydrogen in the presence of a mixture of a doubly open-ended organopolyphosphite ligand and an organomonophosphine ligand, at least one of said ligands being bonded to a transition metal to form a transition metal-ligand complex hydroformylation catalyst; the organopolyphosphite ligand comprising a plurality of phosphorus (III) atoms each bonded to three hydrocarbyloxy radicals, any non-bridging species of which consists essentially of an aryloxy radical (substituted or unsubstituted); the contacting being conducted in a manner such that the molar ratio of both the organomonophosphine and the organopolyphosphite to the metal is at least 1, and wherein the organomonophosphine ligand is triphenylphosphine and the organopolyphosphite ligand is of the formula: wherein each of R 1 and R 2 is the same or different and represents a substituted or unsubstituted monovalent aryl radical containing from 6 to 40 carbon atoms, and R 28 may be a C 1-20 alkyl or cycloalkly radical or an alkoxy radical; and R 29 may be a hydrogen atom, a C 1-20 alkyl or cycloalkyl radical or an alkoxy radical.