METHOD FOR HYDROGENATION OF METHYLOLALKANALS TO GIVE POLYVALENT ALCOHOLS WITH LOW ACETAL CONTENT

摘要

The invention relates to a method for production of polyvalent alcohols with low acetal content by catalytic hydrogenation of methylolalkanals of general formula (I), where R¹ and R² independently = a further methylol or C₁ - ₂₂ alkyl group or C₆ - C₃₃ aryl or aralkyl group in the liquid phase on a hydrogenation catalyst, characterised in that at least one tertiary amine, inorganic base or inorganic or organic acid is added to the hydrogenation feed to adjust the pH value of the hydrogenation product to 7.0 to 9.0.