| abstract |
An object of the present invention is to provide a polyfunctional active ester compound from which a resin composition excellent in heat resistance and dielectric properties after curing can be obtained. Moreover, an object of this invention is to provide the resin composition formed using this polyfunctional active ester compound, the hardened|cured material of this resin composition, and the buildup film formed using this resin composition. This invention is a polyfunctional active ester compound represented by following formula (1). [Formula 1] In Formula (1), R< 1> and R< 2> are respectively the same, different, and may be an aryl group which may be substituted, X is each independently an oxygen atom or a divalent group, Y is a divalent It is an organic group, and n is an integer of 1 or more. |