Abstract: The cyanate ester compound of the present invention is obtained by cyanating a modified naphthalene formaldehyde resin.

Abstract: The present invention is a cyanate ester compound represented by the following formula (1): wherein Ar represents an aromatic ring; R1 each independently represents a hydrogen atom, an alkyl group, or an aryl group; n each independently represents an integer of 1 to 3; m+n is the same as the total number of hydrogen atoms in a monovalent aromatic group containing the aromatic ring and the hydrogen atoms; R2 represents a hydrogen atom (excluding a case where Ar represents a benzene ring; n each represents 1; R1 represents a hydrogen atom; m each represents 4, and a cyanate group is bonded to the benzene ring in the 4-position relative to an adamantyl group), or an alkyl group having 1 to 4 carbon atoms; and R3 represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms.

Abstract: A curable resin composition which can achieve a cured product in which the generation of cracks upon curing is suppressed and which has both a low thermal expansion rate and a low water absorbability is provided. The curable resin composition comprises: at least a cyanate ester compound (A) represented by the following formula (I); a metal complex catalyst (B); and an additive (C), wherein the additive (C) contains any one or more selected from the group consisting of a compound represented by the following general formula (II), a compound represented by the following general formula (III), and a tertiary amine.

Abstract: A method for efficiently producing a cyanogen halide with suppressed side effects, and a method for producing a high-purity cyanate ester compound at a high yield includes contacting a halogen molecule with an aqueous solution containing hydrogen cyanide and/or a metal cyanide, so that the hydrogen cyanide and/or the metal cyanide is allowed to react with the halogen molecule in the reaction solution to obtain the cyanogen halide, wherein more than 1 mole of the hydrogen cyanide or the metal cyanide is used based on 1 mole of the halogen molecule, and when an amount of substance of an unreacted hydrogen cyanide or an unreacted metal cyanide is defined as mole (A) and an amount of substance of the generated cyanogen halide is defined as mole (B), the reaction is terminated in a state in which (A):(A)+(B) is between 0.00009:1 and 0.2:1.

Abstract: There is provided a novel dicyanatophenyl-based difunctional cyanate ester which is in a liquid form at ordinary temperature and can obtain a cured product having an excellent low thermal expansion rate. There is disclosed a cyanate ester compound represented by the following formula (I): (wherein R1 represents a hydrocarbon group having 2 to 20 carbon atoms).

Abstract: The present invention is a cyanate ester compound represented by the following formula (1): wherein Ar represents an aromatic ring; R1 each independently represents a hydrogen atom, an alkyl group, or an aryl group; n each independently represents an integer of 1 to 3; m+n is the same as the total number of hydrogen atoms in a monovalent aromatic group containing the aromatic ring and the hydrogen atoms; R2 represents a hydrogen atom (excluding a case where Ar represents a benzene ring; n each represents 1; R1 represents a hydrogen atom; m each represents 4, and a cyanate group is bonded to the benzene ring in the 4-position relative to an adamantyl group), or an alkyl group having 1 to 4 carbon atoms; and R3 represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms.

Abstract: The cyanate ester compound of the present invention is obtained by cyanating a modified naphthalene formaldehyde resin.

Abstract: A method for efficiently producing a cyanogen halide with suppressed side effects, and a method for producing a high-purity cyanate ester compound at a high yield includes contacting a halogen molecule with an aqueous solution containing hydrogen cyanide and/or a metal cyanide, so that the hydrogen cyanide and/or the metal cyanide is allowed to react with the halogen molecule in the reaction solution to obtain the cyanogen halide, wherein more than 1 mole of the hydrogen cyanide or the metal cyanide is used based on 1 mole of the halogen molecule, and when an amount of substance of an unreacted hydrogen cyanide or an unreacted metal cyanide is defined as mole (A) and an amount of substance of the generated cyanogen halide is defined as mole (B), the reaction is terminated in a state in which (A):(A)+(B) is between 0.00009:1 and 0.2:1.

Abstract: A curable resin composition which is in a liquid form at ordinary temperature and provides a cured product having excellent heat resistance and a low thermal expansion rate is provided. The curable resin composition according to the present invention comprises: a cyanate ester compound (A) represented by the following formula (I); and a curing accelerator (B): wherein R1 represents a hydrocarbon group having 2 to 20 carbon atoms.

Abstract: There is provided a novel cyanate ester compound that can provide a cured product possessing excellent heat resistance. The cyanate ester compound is represented by general formula (1): wherein R1 represents an aromatic substituent having 6 to 10 carbon atoms or an alkyl group having 1 to 20 carbon atoms; Rx1's each independently represent a hydrogen atom, an alkyl or alkoxy group having 1 to 20 carbon atoms, or a halogen; Ry1's each independently represent a hydrogen atom, an alkyl or alkoxy group having 1 to 20 carbon atoms, or a halogen; m is an integer of 0 to 4; and n is an integer of 0 to 4.

Abstract: A curable resin composition which can achieve a cured product in which the generation of cracks upon curing is suppressed and which has both a low thermal expansion rate and a low water absorbability is provided. The curable resin composition comprises: at least a cyanate ester compound (A) represented by the following formula (I); a metal complex catalyst (B); and an additive (C), wherein the additive (C) contains any one or more selected from the group consisting of a compound represented by the following general formula (II), a compound represented by the following general formula (III), and a tertiary amine.

Abstract: There is provided a novel dicyanatophenyl-based difunctional cyanate ester which is in a liquid form at ordinary temperature and can obtain a cured product having an excellent low thermal expansion rate. There is disclosed a cyanate ester compound represented by the following formula (I): (wherein R1 represents a hydrocarbon group having 2 to 20 carbon atoms).

Abstract: There is provided a novel cyanate ester compound that can provide a cured product possessing excellent heat resistance. The cyanate ester compound is represented by general formula (1): wherein R1 represents an aromatic substituent having 6 to 10 carbon atoms or an alkyl group having 1 to 20 carbon atoms; Rx1's each independently represent a hydrogen atom, an alkyl or alkoxy group having 1 to 20 carbon atoms, or a halogen; Ry1's each independently represent a hydrogen atom, an alkyl or alkoxy group having 1 to 20 carbon atoms, or a halogen; m is an integer of 0 to 4; and n is an integer of 0 to 4.