ACTIVE ESTER RESIN, EPOXY RESIN COMPOSITION, CURED PRODUCT THEREOF, PREPREG, CIRCUIT BOARD, AND BUILD-UP FILM

摘要

There is provided a novel active ester resin which has a high solubility in a variety of solvents. The active ester resin includes a structural moiety in which a structural unit (I) in which a plurality of arylene groups (a) are bonded to each other via an alicyclic hydrocarbon group is bonded to another structural unit (I) or an aryl group (d) via an arylene dicarbonyloxy group (c), wherein at least one of the arylene groups (a) in the molecule has a structural part (b) represented by Structural Formula (i) and positioned on its aromatic nucleus (in the formula, each R1 independently represents a methyl group or a hydrogen atom; Ar1 represents a phenylene group, a naphthylene group, or a phenylene group or naphthylene group which has one to three alkyl groups each having 1 to 4 carbon atoms on its aromatic nucleus; and n is 1 or 2).

主权项

1. An active ester resin comprising a structural moiety in which a structural unit (I) in which a plurality of arylene groups (a) are bonded to each other via an alicyclic hydrocarbon group is bonded to another structural unit (I) or an aryl group (d) via an arylene dicarbonyloxy group (c), wherein at least one of the arylene groups (a) in the resin has a structural part (b) represented by Structural Formula (i) and positioned on its aromatic nucleus(where each R1 independently represents a methyl group or a hydrogen atom; Ar1 represents a phenylene group, a naphthylene group, or a phenylene group or naphthylene group which has one to three alkyl groups each having 1 to 4 carbon atoms on its aromatic nucleus; and n is 1 or 2).