Abstract
The novel Epoxy resins with a high content of benzyl groups at meta-position were synthesized by the reaction of tetramethylbiphenol with benzyl alcohol. The merit of the substituents at meta-position has been proved by their excellent moisture reliability, dielectric properties and flame retardancy. The groups did not retard Epoxidation rate. The origin of the excellent properties were investigated by changing the content of benzyl groups.