The Electrical Properties for Phenolic Isocyanate-Modified Bisphenol-Based Epoxy Resins Comprising Benzoate Group.

Epoxy resin has been required to have a low dielectric constant (D-k), low dissipation factor (D-f), low coefficient of thermal expansion (CTE), low water absorption, high mechanical, and high adhesion properties for various applications. A series of novel phenolic isocyanate-modified bisphenol-based epoxy resins comprising benzoate group were prepared for practical electronic packaging applications. The developed epoxy resins showed highly reduced dielectric constants (D-k similar to 3.00 at 1 GHz) and low dissipation values (Df similar to 0014 at 1 GHz) as well as enhanced thermal properties.