Flame retardant electrical laminate.

摘要

A flame retardant electrical laminate prepared by impregnating a base material with a halogen-containing unsaturated polyester resin which is prepared by dissolving a halogen-containing unsaturated polyester into a polymerizable monomer; and then curing the halogen-containing unsaturated polyester resin; wherein the halogen-containing unsaturated polyester has a molecular weight per 1 mole of unsaturated group of 350 to 1,000, and the cured halogen-containing unsaturated polyester resin has a glass transition temperature of 30 to 90 DEG C. Such electrical laminates not only have excellent flame redardancy but also excellent punching quality at wide temperature range including room temperature.