PRODUCTION OF POLYALCOHOL RESIN

PROBLEM TO BE SOLVED: To provide a method for producing a polyalcohol resin useful as a resin, etc., for food wrapping, by which a hydrogenation is effectively carried out under a safe and mild reaction condition by using a ruthenium catalyst as a hydrogenation catalyst. SOLUTION: (A) A hydrogen reduction of a cyclic ketone/formaldehyde resin, preferably a cyclohexanone/formaldehyde resin is carried out in the presence of (B) a ruthenium catalyst in the method for producing a polyalcohol resin. The component B is preferably the catalyst supported with a carrier such as alumina so that the carrying proportion of the ruthenium metal may be 5-15 wt.% based on the carrier-supported catalyst. Further, the hydrogen reduction reaction is preferably carried out, for example, under about 1-100 atm at about 0-250 deg.C.