Halogen-free, flame-retardant insulating epoxy resin composition and circuit board comprising insulation layer formed thereof

摘要

A halogen-tree, flame-retardant insulating epoxy resin composition which comprises (1) an epoxy resin, (2) a curing agent for the epoxy resin, (3) a phosphate of a resorcinol type, (4) aluminum hydroxide, and (5) a cure accelerator for the epoxy resin. The composition displays necessary flame retardant properties and sufficient insulating properties after the formation of an insulating layer in a circuit board, withstands a plating process, and does not cause the bleedout of the insulation layer formed. A circuit board with flame retardant properties comprising insulation layers formed of the epoxy resin composition is also disclosed.