| 摘要 |
PURPOSE:To obtain a hydrogenated bisphenol useful as a raw material for resins under a mild condition in excellent selectivity and in high yield while suppressing by-products by hydrogenating a bisphenol in the presence of a nickel-based catalyst and a metal oxide. CONSTITUTION:A compound of formula I (R<1> and R<2> are H or 1-5C alkyl; m and n are 1-2; X is single bond, 1-15C alkylene or cycloalkylene) in the presence of a nickel-based catalyst (e.g. Raney nickel) and two or more kinds of metal oxides (e.g. calcium oxide-magnesium oxide) of the group III of the periodic table in a solvent (e.g. methanol) or in the absence of a solvent at 100-250 deg.C under 10-100kg/cm<2>G pressure while stirring to give a compound of formula II. The amount of the nickel-based catalyst used is 0.3-10wt.% based on the bisphenol. In the case of the metal oxide, for example, being calcium oxide/ magnesium oxide, the amount of the metal oxide in the weight ratio of 1/20-20/1 used is 3-200wt.% based on the nickel metal. The hydrogenated bisphenol A is useful as a raw material for polyester, polycarbonate, polyurethane, etc. |
