| 摘要 |
Process for the epoxidation of an unsaturated (meth)acrylic compound of formula: <IMAGE> (I) in which R1 is chosen from H and C1-C5-alkyl; R2 is chosen from H, alkyl and aryl; R3 is a straight-chain, branched or cyclic alkylene or oxyalkylene radical having from 1 to 12 carbon atoms, it being possible for one of the carbon atoms of R2, when the latter is an alkyl radical, to be linked to one of the carbon atoms of R3 to form a ring; and A is chosen from O, S, NH and NR4, R4 being a C1-C12-alkyl group; by the action of hydrogen peroxide on the said unsaturated (meth)acrylic compound, at a temperature of between 10 DEG C. and 50 DEG C., in the presence of at least one catalyst chosen from the alkali metal molybdates and the alkali metal pertungstates and in the presence of at least one phase transfer agent.
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