| abstract |
(A) 10 to 60 parts by weight of a dicyclopentadiene type benzoxazine resin, based on 100 parts by weight of the total organic solid components (A), (B), (C) (B) an epoxy resin; (C) an active ester curing agent; (D) phosphorus flame retardant. The prepreg and the laminate made of the halogen-free resin composition have low dielectric constant, low dielectric loss factor, low water absorption, high dimensional stability, high heat resistance and good flame retardancy, processability and chemical resistance. |