Transition metal complex catalyzed reactions
AssigneeUnion Carbide Corporation
InventorsJohn M. Maher, David R. Bryant
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Abstract
The use of an organic polymer additive to minimize or prevent the rhodium of a rhodiumorganophosphite complex catalyst from precipitating from solution during a liquid recycle hydroformylation process.
Claims6
A method for minimizing or preventing the precipitation of the rhodium of rhodium-phosphite complex catalyst from solution as rhodium metal or rhodium clusters that may occur during a solubilized rhodium-phosphite complex catalyzed, liquid recycle hydroformulation process for producing aldehyde by reacting an olefinic unsaturated compound with carbon monoxide and hydrogen and which involves the recovery of the aldehyde product by distillation from a reaction product solution containing the solubilized rhodium-phosphite complex catalyst and aldehyde product at a distillation temperature in the range of about 50.degree. C. to about 140.degree. C., said method comprising carrying out said distillation of the aldehyde product from a reaction product solution containing the solubilized rhodium-phosphite complex catalyst, aldehyde product, and in addition an organic polymer containing at least three polar functional amide radicals.
Dependencies are inferred from the claim text.