Hydroformylation process
AssigneeDow Technology Investments LLC
InventorsMarinus A. Bigi, Michael A. Brammer
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Abstract
The present invention relates to hydroformylation processes for producing aldehydes. In some embodiments, the process comprises contacting in a reaction zone reactants comprising an olefin, hydrogen and CO in the presence of a rhodium-organophosphite based catalyst, optionally with free organophosphite ligand, and 0.1 to 3 weight percent, based on the total weight of the fluid in the reaction zone, of certain polymers specified herein, such that the solubility of the polymer in the aldehyde is greater than or equal to 1 weight percent at 40° C.
Claims9
A hydroformylation process for producing an aldehyde, the process comprising:
- contacting in a reaction zone reactants comprising an olefin, hydrogen and CO in the presence of a rhodium-organophosphite based catalyst, optionally with free organophosphite ligand, and 0.1 to 3 weight percent, based on the total weight of the fluid in the reaction zone, of at least one polymer having the structure of Formula (I) or Formula (II), respectively:
- wherein R21 and R22 are the same or different C1 to C16 alkyl or alkyl-substituted aryl moieties and m, n, and q are positive numbers or zero whose sum is greater than 50 and p is 3 to 6 inclusive, wherein the polymer average molecular weight is equal to or above 10,000, wherein R23 and R24 are H or a C1 to C4 alkyl moiety, wherein R25 is H or a C1 to C16 alkyl moiety, and wherein R25 can be the same or different for each p moiety within Formula (II), such that the solubility of the polymer in the aldehyde is greater than or equal to 1 weight percent at 40° C.
Dependencies are inferred from the claim text.