METHOD FOR HYDROGENATING METHYLOL ALKANALS

Disclosed is a method for the catalytic hydrogenation of methylol alkanals of general formula (I), wherein R1 and R2 independently represent an additional methylol group or an alkyl group with 1 to 22 C atoms, or an alkyl group with 1 to 22 C atoms, or an aryl group or aralkyl group with 6 to 33 C a...

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1. Verfasser: MATTHIAS DERNBACH
Format: Patent
Sprache:eng ; spa
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Zusammenfassung:Disclosed is a method for the catalytic hydrogenation of methylol alkanals of general formula (I), wherein R1 and R2 independently represent an additional methylol group or an alkyl group with 1 to 22 C atoms, or an alkyl group with 1 to 22 C atoms, or an aryl group or aralkyl group with 6 to 33 C atoms, in the liquid phase on a hydrogenation catalyst. The inventive method is characterized in that a pH value ranging between 6.3 and 7.8 is adjusted in the hydrogenation feed by adding at least one tertiary amine. Proceso para la hidrogenacion catalitica de metilolalcanales de la formula (ver formula) en donde R1 y R2 son cada uno, independientemente uno del otro, un grupo metilol adicional o un grupo alquilo que tiene de 1a 22 atomos de carbono o un grupo arilo o aralquilo que tiene de 6 a 33 atomos de carbono, en la fase liquida sobre un catalizador de hidrogenacion, en donde el pH de la alimentacion de hidrogenacion se establece a de 6.3 a 7.8 mediante adicion de cuando menos una amina terciaria.