Process for perfecting the color index of polyhydric alcohols

摘要

"PROCESS FOR IMPROVING THE COLOR INDEX OF POLYIMIDAL ALCOHOLS". A process for greatly improving the color index of polyhydric alcohols, especially trimethylolpropane, by hydrogenation, involves using, in hydrogenation, an alcohol that has already been purified by distillation. The catalysts used are those conventionally used in hydrogenations, preferably copper, nickel, palladium or ruthenium catalysts.