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AssigneeNippon Shokubai Co., Ltd.
InventorTakafumi Kubo
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The invention provides a method of liquid-phase reaction using a soluble metallic catalyst in which the soluble metallic catalyst is caused to coexist with an anion-exchange resin during the reaction and the reaction is conducted under such conditions that 50% or more of the soluble metallic catalyst is adsorbed onto the anion-exchange resin. The anion-exchange resin having the soluble metallic catalyst adsorbed thereon is separated from the liquid reaction mixture to thereby recover the soluble metallic catalyst and reuse it in a liquid-phase reaction. The soluble metallic catalyst is efficiently used, recovered, and reused with great ease at low cost in various liquid-phase reactions using the soluble metallic catalyst.
A batch method of liquid-phase reaction of a carboxylic acid with an epoxy compound to produce a hydroxy ester of the carboxylic acid using a soluble metallic catalyst in a liquid reaction mixture which comprises causing the soluble metallic catalyst to coexist with an anion-exchange resin during the reaction and conducting the reaction under such conditions that 50% or more of the soluble metallic catalyst is adsorbed onto the anion-exchange resin, which further includes the step of separating the anion-exchange resin having the soluble metallic catalyst adsorbed thereon from the liquid reaction mixture and recovering the soluble metallic catalyst.
Dependencies are inferred from the claim text.