| 摘要 |
PURPOSE:To efficiently produce a hydrogenated bisphenol useful as a polymer raw material in a short time by hydrogenating a bisphenol in the presence of a ruthenium catalyst in an alcohol solvent. CONSTITUTION:A bisphenol (e.g. isopropylidene diphenol) is hydrogenated in the presence of a ruthenium catalyst in a >=4C secondary alcohol at 50-250 deg.C under a pressure above the atmospheric pressure for approximately 3hr to produce the hydrogenated bisphenol. The ruthenium catalyst is preferably carried on a carrier (e.g. alumina) because of being readily separated, and is preferably added in an amount of approximately 0.01-0.2wt.% based on the bisphenol of the raw material as the metal ruthenium. Since the reaction conditions are mild and since the reaction is finished in a short time, the deterioration of the catalyst caused by its repeating employments is little, whereby the method is advantageous on the production cost. |
