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US 11,976,037 B2Granted
Process for the production of higher carboxylic acid vinyl esters
AssigneeHexion Inc.
InventorsFabrizio Marras, Leo Sliedregt, Alexander Kraynov
Life of this patent
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Abstract
This invention concerns a process for the production of vinyl esters of carboxylic acids with 3 to 20 carbon atoms, via vinylation in the presence of palladium (Pd) catalyst in combination with copper (Cu) as co-catalyst stabilized by organic salts in the presence of ethylene and air or oxygen.
Claims9
A catalyst system comprising:
- a palladium (II) complex catalyst from a palladium precursor and organic salts;
- and
- a copper complex co-catalyst from a copper precursor and organic salts;
- wherein each of the palladium (II) complex catalyst and the copper complex co-catalyst are prepared ex-situ of the catalyst system,
- wherein the copper complex co-catalyst comprises from 2 to 400 molar equivalents to the palladium (II) complex catalyst molar equivalent, and
- wherein the catalyst system is free of copper salt precursors, and wherein each of the organic salts comprise an ionic organic salt, wherein the ionic organic salt comprises of cations based on quaternary or protonated alkyl, aryl or mixed alkyl-aryl ammonium, phosphonium, pyridinium, pyrrolium, piperidinium, pyrrolidiniumm, morpholinium, imidazolium, pyrazolium or a mixture thereof, and anions based on halogens, (halogenated)carboxylates, sulfates, alkylsulfates, alkylsulfonates, trifluoromethane sulfonate, tetrafluoroborate, hexafluorophosphate, phosphates, or a mixture thereof.
3 more elements
Dependencies are inferred from the claim text.