PHENOLIC RESIN, EPOXY RESIN, EPOXY RESIN COMPOSITION, PREPREG AND CURED PRODUCT OF SAID EPOXY RESIN COMPOSITION OR PREPREG

摘要

Provided are: a phenolic resin which is a constituent of an epoxy resin composition that provides a cured product having high heat resistance and high flame retardancy; an epoxy resin which is derived from the phenolic resin; an epoxy resin composition which contains the phenolic resin or the epoxy resin; a prepreg; and a cured product of the epoxy resin composition or the prepreg. The phenolic resin is obtained by: firstly obtaining a phenolic compound (a) by a reaction between a phenolic compound represented by formula (1) and a compound represented by formula (2); and then reacting the thus-obtained phenolic compound (a) with a phosphorus-containing compound represented by formula (3). (In the formulae, each of R1-R3 independently represents a hydrogen atom or the like; and each of m and k represents an integer of 0-4.)