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AssigneeLucite International UK Limited
InventorsIan Andrew York, Sabina Ziemian
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The invention relates to a method of producing an ethylenically unsaturated carboxylic acid or ester, preferably an α, β ethylenically unsaturated carboxylic acid or ester. The method includes contacting formaldehyde or a suitable source thereof with a carboxylic acid or ester in the presence of a catalyst and optionally in the presence of an alcohol. The catalyst comprises a nitrided metal oxide having at least two types of metal cations, M1 and M2, wherein M1 is selected from the metals of group 2, 3, 4, 13 (called also IIIA) or 14 (called also IVA) of the periodic table and M2 is selected from the metals of groups 5 or 15 (called also VA) of the periodic table. The invention extends to a catalyst system.
A method of producing an ethylenically unsaturated carboxylic acid or ester, such as an α, β ethylenically unsaturated carboxylic acid or ester, comprising the steps of contacting formaldehyde or a suitable source thereof with a carboxylic acid or ester in the presence of a catalyst, wherein the catalyst comprises a nitrided metal oxide having at least two types of metal cations, M1 and M2, wherein M1 is selected from the metals of group 2, 3, 4, 13 (called also IIIA) or 14 (called also IVA) of the periodic table and M2 is selected from the metals of groups 5 or 15 (called also VA) of the periodic table.
A catalyst system for the reaction of formaldehyde or a suitable source thereof with a carboxylic acid or ester, to produce an ethylenically unsaturated carboxylic acid or ester, such as α, β ethylenically unsaturated carboxylic acids or esters, wherein the catalyst comprises a nitrided metal oxide having at least two types of metal cations, M1 and M2, wherein M1 is selected from at least two metals of group 2, 3, 4, 13 (called also IIIA), 14 (called also IVA) of the periodic table and M2 is selected from at least one metal of group 5 or at least one metal of group 15 (called also VA) in the 4th to 6th periods of the periodic table.
Dependencies are inferred from the claim text.