Abstract: A curable resin composition comprising a mixture and/or a preliminary reaction product of (a) at least one cyanate compound selected from the group consisting of polyfunctional cyanate esters, prepolymers of said cyanate esters, coprepolymers of said cyanate esters and an amine and mixtures thereof, (b) at least one compound having two or more acrylic ester groups represented by the formula ##STR1## wherein R.sup.1 is organic group comprising as member constituting a main chain or ring C and optionally O and/or N and optionally as a pendant hydroxy and/or halogen, when R.sup.1 contains aromatic group, R.sup.1 has 6-35 carbon atoms, and when R.sup.1 contains no benzene ring, R.sup.1 has 1-15 carbon atoms, X is hydrogen or methyl, n is integer of 2, 3, 4, 5 or 6 and valency of R.sup.1 is the same as n, and optionally (c) at least one compound selected from the group consisting of polyfunctional maleimides, prepolymers of the maleimides or coprepolymers of the maleimides and an amine is disclosed.

Abstract: A curable resin composition comprising a mixture and/or a preliminary reaction product of (a) polyfunctional cyanate ester, prepolymer of the cyanate ester, or coprepolymer of the cyanate ester and an amine, and (b) alkenyl acrylic esters, alkenyl methacrylic esters, prepolymers of alkenyl acrylic esters, prepolymers alkenyl methacrylic esters, coprepolymers of alkenyl acrylic esters and alkenyl methacrylic esters and mixtures thereof, and a curable resin composition comprising a mixture or a preliminary reaction product of above component (a), above component (b) and (c) a polyfunctional maleimide, prepolymer of the maleimide or coprepolymer of the maleimide and an amine are disclosed. Cured resin having excellent impact-resistance, adhesive power, heat-resistance and chemical-resistance can be prepared from the compositions.

Abstract: A curable resin composition comprising(A) 80 to 99 parts by weight of a polyfunctional cyanate ester, a cyanate ester prepolymer, or a prepolymer of a cyanate ester and an amine, and(B) 20 to 1 parts by weight of a polyimide of the following formula (I), (II) or (III) ##STR1## wherein n is an integer of from 1 to 5, ##STR2## wherein n is an integer of from 1 to 5, and R is --OH, --NH.sub.2, ##STR3## wherein n is an integer of from 1 to 5.

Abstract: A curable resin composition comprising (i) a catalytic composite comprising a peroxide and other catalytic component and (ii) a mixture or a preliminary reaction product of (a) a polyfunctional cyanate ester, prepolymer of the cyanate ester or coprepolymer of the cyanate ester and an amine and (b) a polyfunctional maleimide, prepolymer of the maleimide or coprepolymer of the maleimide and an amine and optionally (c) other component is disclosed. The composition cures rapidly at a low temperature and is preferable from view point of quantity production and workability. The composition is excellent in respect of adhering property, heat-resistance, moisture-resistance and chemical-resistance, and is useful for preparing laminated products, molded products, paint, powder paint, adhesive or varnish.

Abstract: A curable resin composition comprising a mixture and/or a preliminary reaction product of (a) at least one cyanate compound selected from the group consisting of polyfunctional cyanate esters, prepolymers of said cyanate esters, coprepolymers of said cyanate esters and an amine and mixtures thereof, (b) at least one polyisocyanate compound selected from the group consisting of polyisocyanates, prepolymers of said polyisocyanates, coprepolymer of said polyisocyanates and an acid anhydride and mixtures thereof and (c) at least one maleimide compound selected from the group consisting of polyfunctional maleimides, prepolymer of said maleimides, coprepolymers of said maleimides and an amine and mixtures thereof is disclosed.

Abstract: A curable resin composition comprising a mixture and/or a preliminary reaction product of (a) polyfunctional cyanate ester, prepolymer of the cyanate ester, or coprepolymer of the cyanate ester and an amine, (b) acrylic esters, methacrylic esters, prepolymers of acrylic esters, prepolymers methacrylic esters, coprepolymers of acrylic esters and methacrylic esters and mixtures thereof, and (c) a polyfunctional maleimide, prepolymer of the maleimide or coprepolymer of the maleimide and an amine are disclosed. Cured resin having excellent impact-resistance, adhesive power, heat-resistance and chemical-resistance can be prepared from the compositions.

Abstract: A method for coating an article which comprises coating the article first with (I) at least one imide resin selected from the group consisting of polyester imide resins, polyamideimide resins, polyhydantoin resins and mixtures thereof, and then with (II) cyanate ester resin which comprises as essential components (a) at least one cyanate compound selected from the group consisting of polyfunctional cyanate esters, prepolymer of said cyanate esters, coprepolymer of said cyanate esters and an amine and mixtures thereof and (b) at least one maleimide compound selected from the group consisting of polyfunctional maleimides, prepolymer of said maleimides, coprepolymer of said maleimides and an amine and mixtures thereof is disclosed.

Abstract: Curable resin compositions comprising a mixture and/or a preliminary reaction product of (a) at least one cyanate compound selected from the group consisting of polyfunctional cyanate esters, prepolymers of said cyanate esters, coprepolymers of said cyanate esters and an amine and mixtures thereof and (b) a polyamideimide resin and optionally (c) at least one maleimide compound selected from the group consisting of polyfunctional maleimides, prepolymers of said maleimides, coprepolymers of said maleimides and an amine and mixtures thereof are disclosed.

Abstract: Curable resin compositions comprising a mixture and/or a preliminary reaction product of (a) at least one cyanate compound selected from the group consisting of polyfunctional cyanate esters, prepolymers of said cyanate esters, coprepolymers of said cyanate esters and an amine and mixtures thereof and (b) a polyester imide resin and optionally (c) at least one maleimide compound selected from the group consisting of polyfunctional maleimides, prepolymers of said maleimides, coprepolymers of said maleimides and an amine and mixtures thereof are disclosed.