Patent ID: 8283408

Claim:
An uncured composite part comprising: a resin matrix comprising: 50 to 80 weight percent of a cyanate ester resin component based on the total weight of said resin matrix, said cyanate ester resin component comprising one or more cyanate ester resins that do not contain phosphorous; 10 to 40 weight percent of a thermoplastic blend based on the total weight of said resin matrix, said thermoplastic blend comprising polyetherimide and polyamideimide wherein the weight ratio of polyetherimide to polyamideimide is from 5:1 to 1:1; 1 to 15 weight percent of a fire retardant agent based on the total weight of said resin matrix, said fire retardant agent comprising a phosphorous-containing cyanate ester resin; 1 to 10 weight percent of a curative agent component based on the total weight of said resin matrix, said curative agent component comprising a curative agent for said cyanate ester component; and a fibrous reinforcement.