Curable resin composition comprising cyanate ester and acrylic alkenyl ester

A curable resin composition comprising:

• (a) at least one cyanate ester compound selected from the group consisting of:
• (1) a polyfunctional aromatic cyanate ester monomer having the formula:
• R--O--C.tbd.N).sub.m
• wherein m is 2 to 5 and R is an aromatic organic group, the cyanate groups being bonded to an aromatic ring of said aromatic organic group,
• (2) a homoprepolymer of one or more cyanate ester monomers of (1), and
• (3) a coprepolymer of (1) and an amine;
• (b) at least one compound selected from the group consisting of:
• (1) an alkenyl acrylic ester,
• (2) an alkenyl methacrylic ester,
• (3) a homoprepolymer of one or more alkenyl acrylic esters of (1),
• (4) a homoprepolymer of one or more alkenyl methacrylic esters of (2),
• (5) a coprepolymer of (1) and (2);
• and
• (c) at least one compound selected from the group consisting of:
• (1) a polyfunctional maleimide,
• (2) a homoprepolymer of one or more polyfunctional maleimides of (1), and
• (3) a coprepolyer of (1) and an amine, said composition including a mixture of components (a), (b) and (c), a preliminary reaction product of components (a), (b) and (c), or the combination of said mixture and said preliminary reaction product, the combination of (a) and the preliminary reaction product of (b) and (c), the combination of (b) and the preliminary reaction product of (a) and (c), or the combination of (c) and the preliminary reaction product of (a) and (b).