HIGH MOLECULAR WEIGHT EPOXY RESIN, RESIN FILM USING THE HIGH MOLECULAR WEIGHT EPOXY RESIN, RESIN COMPOSITION, AND CURED PRODUCT

摘要

PROBLEM TO BE SOLVED: To provide an epoxy resin capable of satisfying low linear expansion, self-film formability, and handling property.SOLUTION: There is provided a high molecular weight epoxy resin (C) having a weight-average molecular weight of 30,000 to 80,000 converted into standard polystyrene by gel permeation chromatography (hereinafter GPC) and obtained by reacting a bi-functional epoxy resin (A) containing an epoxy resin (a) represented by general formula (1) (n is a repeating unit, and n is an integer of 0) in an amount of 50 wt.% with a compound (B) having two phenolic hydroxyl groups in one molecule in a solvent.