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Abstract

A curable material comprising a particulate filler and a blend of a fluorine-containing cyanate and a fluorine-containing arylene ether polymer. The cyanate is a monomer having the structure N.tbd.C--O--R--[R.sup.1 ].sub.n --O--C.tbd.N and the fluorine containing arylene ether polymer has the structure X--R--[R.sup.1 ].sub.m --X wherein X is any group capable of reacting with a --C.tbd.N group; R is an aliphatic or aromatic group which may or may not be fluorosubstituted; R.sup.1 is an aliphatic or aromatic group which may or may not be fluoro substituted or R.sup.1 is selected from the group consisting of ether, carbonyl, sulfone, phosphine oxide and sulfide, and at least one of R or R.sup.1 must be fluoro substituted; n is 0-10; and m is 0-100; The material in the cured state comprises a fluorine-containing polycyanurate network having a plurality of discrete phases of said fluorine-containing thermoplastic polymer dispersed therein wherein said thermoplastic polymer phases are of submicron size.

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First Claim