Preparation method of epoxy resin diluent containing benzene ring structure

The invention belongs to the technical field of epoxy resin diluent preparation, and particularly relates to a preparation method of an epoxy resin diluent containing a benzene ring structure. The method comprises the following steps: fusing a catalyst with one of polyphenol or benzene ring-containing polyether according to a certain mass ratio, then dropwise adding epoxy chloropropane to carry out ring-opening reaction, and after the reaction is finished, carrying out curing and monomer removal to obtain chlorohydrin ether; and carrying out ring-closure reaction on the chlorohydrin ether and strong base, curing after the reaction is finished, and then carrying out liquid separation, neutralization and refining to obtain the epoxy resin diluent containing the benzene ring structure. The epoxy resin diluent containing the benzene ring structure, which is prepared by the method disclosed by the invention, has the advantages of high reaction activity, high bonding strength and good intermiscibility with epoxy re