Transesterification of methyl methacrylate
AssigneeFrancaise d'Organo Synthese
InventorPhilippe Gabillet
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Abstract
Methyl methacrylate is efficiently transesterified with a heavy alcohol in the presence of (i) defined amounts of a lithium catalyst incrementally added to the reaction medium, and (ii) an azeotrope-forming compound which forms, together with the methanol produced, an azeotrope distilling at a temperature of less than about 60.degree. C.
Claims8
A process for the preparation of methacrylic ester, comprising transesterifying methyl methacrylate with an alcohol heavier than methanol, wherein from 6 to 30 ppm of a lithium catalyst is incrementally added to the medium during transesterification, and wherein transesterification is carried out in the presence of an azeotrope-forming compound which forms, together with the methanol of reaction, an azeotrope which distills at a temperature of less than about 60.degree. C.
Dependencies are inferred from the claim text.