Patent ID: 7087707

Claim:
A cyanate ester comprising the formula: wherein Ar 1 is a divalent aromatic radical selected from the group consisting of substituted or unsubstituted phenyl, substituted or unsubstituted o-phenyl, substituted or unsubstituted m-phenyl, and substituted or unsubstituted p-phenyl; wherein Ar 2 is a divalent aromatic radical selected from the group consisting of a substituted or unsubstituted aromatic ring, substituted or unsubstituted fused aromatic rings, a substituted or unsubstituted aromatic ring assembly with or without intervening groups, and combinations thereof, with the proviso that when Ar 2 is substituted or unsubstituted phenyl, then Ar 1 is substituted or unsubstituted m-phenyl, Ar 2 is substituted or unsubstituted m-phenyl, or both; and wherein n is a positive integer.