Color number improvement in polyhydric alcohols by hydrogenation
AssigneeBASF SE
InventorsMatthias Dernbach, Detlef Kratz, Achim Stammer, Mathias Haake, Michael Koch, Gerhard Schulz
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Abstract
A process for greatly improving the color index of polyhydric alcohols, especially trimethylolpropane, by hydrogenation comprises using, in the hydrogenation, an alcohol which has already been purified by distillation. The catalysts used are those conventionally employed in hydrogenations, preferably copper, nickel, palladium or ruthenium catalysts.
Claims18
A process for improving the color index of polyhydric alcohols, selected from the group consisting of trimethylolethane, trimethylolpropane, trimethylolbutane, neopentyl glycol and pentaerythritol, by catalytic hydrogenation, wherein the polyhydric alcohol used in the hydrogenation has been purified by distillation following is preparation.
Dependencies are inferred from the claim text.