| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for decomposing an ester oligomer (high-boiling point compound) containing succinic acid and/or 4-hydroxybutyric acid, and 1,4-butanediol as constituents, in particular, a high-boiling point compound (ester oligomer) by-produced in a method for producingγ-butyrolactone, and to provide a method for producing an industrially advantageous C4 product group, in particularγ-butyrolactone. SOLUTION: This method for decomposing the ester oligomer includes the steps, wherein an aqueous solution of the ester oligomer containing succinic acid and/or 4-hydroxybutyric acid, and 1,4-butanediol as the constituents is brought into contact with an immobilized enzyme that has ester hydrolysis ability, and is decomposed into respective constituents. COPYRIGHT: (C)2008,JPO&INPIT
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