Patent ID: 8053077

Claim:
A composite prepared by a method comprising: impregnating a reinforcing structure with a curable composition at a temperature of about 10 to about 40° C., wherein the curable composition comprises about 30 to about 80 parts by weight of an epoxy resin, about 20 to about 60 parts by weight of a polyfunctional poly(arylene ether) having a polydispersity index of 2 to 2.2, an intrinsic viscosity of about 0.03 to about 0.2 deciliter per gram measured in chloroform at 25° C., and a number average molecular weight less than or equal to 900 atomic mass units, about 2 to about 100 parts by weight of a solvent having an atmospheric boiling point of about 50 to about 250° C., and an amount of a curing promoter effective to cure the epoxy resin; wherein all parts by weight are based on 100 parts by weight total of the epoxy resin and the polyfunctional poly(arylene ether); and wherein the composite exhibits one or more of a water absorption less than or equal to 0.2 weight percent after 24 hours immersion in water at 23° C.; a methylene chloride absorption less than or equal to 1.3 weight percent after 30 minutes immersion in methylene chloride at 23° C. followed by 10 minutes in air at 23° C.; a dielectric constant less than or equal to 3.4 measured at 23° C. and 2.4 gigahertz; and a dissipation factor less than or equal to 0.015 measured at 23° C. and 2.4 gigahertz.