Mitsubishi Gas Chemical Company, Inc.

Makoto Tsubuku

Masayuki Katagiri

Tomoo Tsujimoto

Taketo Ikeno

Takashi Kobayashi

Masanobu Sogame

Yuuichi Sugano

Yoshinori Mabuchi

Keita Tokuzumi

Kenji Arii

Yoshihiro Kato

Go Higashihara

Sotaro Hiramatsu

Kenj Arii

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

Cyanate ester compound, curable resin composition containing said compound, and cured product of said composition

The present invention is a cyanate ester compound represented by the following formula (1): 

Cyanate ester compound, curable resin composition containing the same, and hardened product thereof

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. 

Curable resin composition and cured product thereof

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.

Method for producing cyanogen-halide, cyanate ester compound and method for producing the same, and resin composition

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 Rrepresents a hydrocarbon group having 2 to 20 carbon atoms).

Cyanate ester compound, curable resin composition containing cyanate ester compound, and cured product thereof

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.

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Niigata, Japan

Makoto Tsubuku