The crosslinkable resin composition and imide resin and its manufacturing method

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PROBLEM TO BE SOLVED : To provide a crosslinkable resin composition which is excellent in solubility in a general-purpose organic solvent, provides a cured product having high resin strength and durability, and can be applied to an industrial component material.SOLUTION : A hemiacetal ester compound solution contains a hemiacetal ester compound obtained by adding a vinyl ester compound represented by formula (A) and a tetracarboxylic acid, and an organic solvent. In formula (A), Rto Rare each independently hydrogen, a halogen atom or a monovalent organic group; Rand Rare each independently a monovalent organic group; and an organic group having a reactive group in Rand Ris 35 mol% or less.SELECTED DRAWING : None