To provide a simple, inexpensive and extremely selective method for continuously producing pure dimethylvinylcarbinol(DMVC) from prenol provided with a high space time yield.
(a) The formation of a liquid two-phase mixture in a reactional mixture is avoided during a reaction as far as possible, (b) a formed DMVC is distilled in a reflux ratio of at least 2 and (c) the reactional volume and/or the amount of the prenol added per h and/or the concentration of a protonic acid in the reactional mixture are set so as to provide the product of the quotient obtained by dividing the reactional volume divided by the prenol volume added per h and the proton concentration in the reactional mixture defined as a residence time concentration coefficient with a value of 0.001 h.mol/L to 1 h.mol/L in a method for continuously reacting the prenol with an aqueous solution of the protonic acid in a still or a rectifying column while distilling off the DMVC formed in the state of an azeotropic mixture with water and thereby producing the DMVC.
SIEGEL WOLFGANG DR
THERRE JOERG DR
PAHL MELANIE
AQUILA WERNER DR
SCHAEFER-LUEDERSSEN ULRICH DR
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