WO2011090022A1 - シアン酸エステル化合物およびその硬化物 - Google Patents
シアン酸エステル化合物およびその硬化物 Download PDFInfo
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- WO2011090022A1 WO2011090022A1 PCT/JP2011/050734 JP2011050734W WO2011090022A1 WO 2011090022 A1 WO2011090022 A1 WO 2011090022A1 JP 2011050734 W JP2011050734 W JP 2011050734W WO 2011090022 A1 WO2011090022 A1 WO 2011090022A1
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- 0 C*1C=CC(N*)=CC=C1 Chemical compound C*1C=CC(N*)=CC=C1 0.000 description 3
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D209/00—Heterocyclic compounds containing five-membered rings, condensed with other rings, with one nitrogen atom as the only ring hetero atom
- C07D209/02—Heterocyclic compounds containing five-membered rings, condensed with other rings, with one nitrogen atom as the only ring hetero atom condensed with one carbocyclic ring
- C07D209/44—Iso-indoles; Hydrogenated iso-indoles
- C07D209/46—Iso-indoles; Hydrogenated iso-indoles with an oxygen atom in position 1
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D209/00—Heterocyclic compounds containing five-membered rings, condensed with other rings, with one nitrogen atom as the only ring hetero atom
- C07D209/02—Heterocyclic compounds containing five-membered rings, condensed with other rings, with one nitrogen atom as the only ring hetero atom condensed with one carbocyclic ring
- C07D209/04—Indoles; Hydrogenated indoles
- C07D209/30—Indoles; Hydrogenated indoles with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, directly attached to carbon atoms of the hetero ring
- C07D209/32—Oxygen atoms
- C07D209/34—Oxygen atoms in position 2
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G73/00—Macromolecular compounds obtained by reactions forming a linkage containing nitrogen with or without oxygen or carbon in the main chain of the macromolecule, not provided for in groups C08G12/00 - C08G71/00
- C08G73/06—Polycondensates having nitrogen-containing heterocyclic rings in the main chain of the macromolecule
- C08G73/0622—Polycondensates containing six-membered rings, not condensed with other rings, with nitrogen atoms as the only ring hetero atoms
- C08G73/0638—Polycondensates containing six-membered rings, not condensed with other rings, with nitrogen atoms as the only ring hetero atoms with at least three nitrogen atoms in the ring
- C08G73/0644—Poly(1,3,5)triazines
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G73/00—Macromolecular compounds obtained by reactions forming a linkage containing nitrogen with or without oxygen or carbon in the main chain of the macromolecule, not provided for in groups C08G12/00 - C08G71/00
- C08G73/06—Polycondensates having nitrogen-containing heterocyclic rings in the main chain of the macromolecule
- C08G73/0622—Polycondensates containing six-membered rings, not condensed with other rings, with nitrogen atoms as the only ring hetero atoms
- C08G73/0638—Polycondensates containing six-membered rings, not condensed with other rings, with nitrogen atoms as the only ring hetero atoms with at least three nitrogen atoms in the ring
- C08G73/065—Preparatory processes
- C08G73/0655—Preparatory processes from polycyanurates
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/16—Nitrogen-containing compounds
- C08K5/34—Heterocyclic compounds having nitrogen in the ring
- C08K5/3412—Heterocyclic compounds having nitrogen in the ring having one nitrogen atom in the ring
- C08K5/3415—Five-membered rings
- C08K5/3417—Five-membered rings condensed with carbocyclic rings
Definitions
- the present invention relates to a novel cyanate ester compound, and more particularly to a novel cyanate ester compound having excellent heat resistance, a thermosetting resin composition containing the same, and a cured product thereof.
- thermosetting resins such as phenol resins, melamine resins, bismaleimide resins, unsaturated polyester resins, cyanate ester resins, and epoxy resins are used as matrix resins depending on the intended use.
- the heat resistance of the fiber reinforced composite material depends on the heat resistance of these matrix resins.
- an epoxy resin obtained by glycidylating 1,1,2,2-tetrakis (4-hydroxyphenyl) ethane or a triglycidylaminophenol skeleton is used (for example, Japanese Patent No. 3557330).
- diaminodiphenyl sulfone, polyether sulfone, or polyether imide is blended with an epoxy resin containing an epoxy resin as a main component (for example, JP-A-62-297316).
- thermosetting resin A method for producing a fiber reinforced composite material using a cyanate ester resin as a matrix has also been proposed (for example, JP 2003-12819 A and JP 2006-70115 A).
- the present inventors have now found that a novel cyanate ester compound having a specific structure can impart excellent heat resistance to the cured product.
- the present invention is based on this finding.
- an object of the present invention is to provide a novel cyanate ester compound from which a cured product having excellent heat resistance can be obtained.
- Another object of the present invention is to provide a curable resin composition comprising a novel cyanester compound and a cured product obtained by curing the resin composition.
- R1 represents an aromatic substituent having 6 to 10 carbon atoms or an alkyl group having 1 to 20 carbon atoms
- Each Rx1 independently represents a hydrogen atom, an alkyl group having 1 to 20 carbon atoms, an alkoxy group, or a halogen
- Ry1 each independently represents a hydrogen atom, an alkyl group having 1 to 20 carbon atoms, an alkoxy group, or a halogen
- m represents an integer of 0 to 4
- n represents an integer of 0 to 4.
- the cyanate ester compound by another aspect of this invention is represented by following General formula (2).
- R2 represents an aromatic substituent having 6 to 10 carbon atoms or an alkyl group having 1 to 20 carbon atoms
- Each Rx2 independently represents a hydrogen atom, an alkyl group having 1 to 20 carbon atoms, an alkoxy group, or a halogen
- Each Ry2 independently represents a hydrogen atom, an alkyl group having 1 to 20 carbon atoms, an alkoxy group, or a halogen
- m represents an integer of 0 to 4
- n represents an integer of 0 to 4.
- a curable resin composition comprising the cyanate ester compound and a cured product obtained by curing the curable resin composition.
- the cured product having a high glass transition temperature can be obtained by polymerizing the cyanate ester compound according to the present invention or copolymerizing with another resin. Therefore, it is extremely useful as a high-functional polymer material and becomes a material excellent in thermal, electrical and mechanical properties.
- thermosetting resin composition comprising the cyanate ester compound according to the present invention includes an electrical insulating material, a resist resin, a semiconductor sealing resin, an adhesive for a printed wiring board, an electrical laminate, and a prepreg. It can be used for a wide range of applications such as matrix resin, build-up laminate material, fiber reinforced plastic resin, liquid crystal display panel sealing resin, liquid crystal color filter resin, paint, various coating agents, adhesives, etc. .
- a cured product obtained by curing a thermosetting resin composition has a high glass transition temperature and excellent heat resistance, and therefore can be suitably used for a matrix of a fiber-reinforced composite material.
- the cyanate ester according to the present invention is represented by the following general formula (1).
- R1 represents an aromatic substituent having 6 to 10 carbon atoms or an alkyl group having 1 to 20 carbon atoms, and among them, an aromatic substituent or carbon having 6 to 10 carbon atoms
- An alkyl group having a number of 1 to 10 is preferable. Specific examples include a phenyl group, a methyl group, an ethyl group, an n-propyl group, and an i-propyl group.
- each Rx1 independently represents a hydrogen atom, an alkyl group having 1 to 20 carbon atoms, an alkoxy group, or a halogen.
- a hydrogen atom or one having 1 to 10 carbon atoms is represented.
- An alkyl group is preferable, and a hydrogen atom or an alkyl group having 1 to 3 carbon atoms is particularly preferable.
- Specific examples include a hydrogen atom, a methyl group, an ethyl group, an n-propyl group, and an i-propyl group.
- M represents an integer of 0 to 4.
- Ry1 each independently represents a hydrogen atom, an alkyl group having 1 to 20 carbon atoms, an alkoxy group, or a halogen, and among these, a hydrogen atom or a carbon atom having 1 to 10 carbon atoms.
- An alkyl group is preferable, and a hydrogen atom or an alkyl group having 1 to 3 carbon atoms is particularly preferable.
- Specific examples include a hydrogen atom, a methyl group, an ethyl group, an n-propyl group, and an i-propyl group.
- N represents an integer of 0 to 4.
- a cyanate ester according to another embodiment of the present invention is represented by the following general formula (2).
- R2 represents an aromatic substituent having 6 to 10 carbon atoms or an alkyl group having 1 to 20 carbon atoms.
- an aromatic substituent having 6 to 10 carbon atoms Alternatively, an alkyl group having 1 to 10 carbon atoms is preferable. Specific examples include a phenyl group, a methyl group, an ethyl group, an n-propyl group, and an i-propyl group.
- each Rx2 independently represents a hydrogen atom, an alkyl group having 1 to 20 carbon atoms, an alkoxy group, or a halogen, and among these, a hydrogen atom or 1 to 10 carbon atoms In particular, a hydrogen atom or an alkyl group having 1 to 3 carbon atoms is preferable. Specific examples include a hydrogen atom, a methyl group, an ethyl group, an n-propyl group, and an i-propyl group. M represents an integer of 0 to 4.
- each Ry2 independently represents a hydrogen atom, an alkyl group having 1 to 20 carbon atoms, an alkoxy group or a halogen, and among these, a hydrogen atom or a carbon atom having 1 to 10 carbon atoms.
- An alkyl group is preferable, and a hydrogen atom or an alkyl group having 1 to 3 carbon atoms is particularly preferable.
- Specific examples include a hydrogen atom, a methyl group, an ethyl group, an n-propyl group, and an i-propyl group.
- n represents an integer of 0 to 4.
- the method for producing the compound represented by the general formula (1) is not particularly limited, and for example, it can be produced from a phenol represented by the following general formula (3) by a method known as cyanate synthesis. (Wherein R1, Rx1 and Ry1 have the same meaning as defined in the above formula (1).)
- the phenol represented by the general formula (3) can be obtained by a dehydration reaction between a phenolphthalein derivative represented by the following general formula (4) and an amine derivative or an aniline derivative by a known method (for example, JP, 2005-290378, A). Moreover, you may synthesize
- Rx1 and Ry1 have the same meaning as defined in the above formula (1).
- Examples of the amine derivative used for the synthesis of the phenol represented by the general formula (3) include methylamine, ethylamine, propylamine, isopropylamine, butylamine, sec-butylamine, tert-butylamine, amylamine, hexylamine, heptylamine. Octylamine, nonylamine, decylamine, cyclohexylamine and the like.
- aniline derivative used for the synthesis of the phenol represented by the general formula (3) examples include aniline, o-methylaniline, m-methylaniline, p-methylaniline, o-methoxyaniline, m-methoxyaniline, p -Methoxyaniline, o-ethylaniline, m-ethylaniline, p-ethylaniline, 2,3-dimethylaniline, 2,4-dimethylaniline, 2,5-dimethylaniline, 3,4-dimethylaniline, 3,5 -Dimethylaniline, o-chloromethylaniline, m-chloromethylaniline, p-chloromethylaniline, o-trifluoromethylaniline, m-trifluoromethylaniline, p-trifluoromethylaniline, o-chloroaniline, m- Chloroaniline, p-chloroaniline, o-fluoroaniline, -Fluoro
- the method for producing the compound represented by the general formula (2) is not particularly limited, and for example, it may be produced from a phenol represented by the following general formula (5) by a method known as cyanate synthesis. (Wherein R2, Rx2 and Ry2 have the same meaning as defined in the above formula (2).)
- the production method of the phenol represented by the general formula (5) is not particularly limited, and a known method can be used.
- indoline-2,3-dione represented by the following general formula (6) You may synthesize
- the phenols reacted with the indoline-2,3-dione represented by the general formula (6) include phenol, o-cresol, m-cresol, p- Cresol, o-fluorophenol, m-fluorophenol, p-fluorophenol, o-chlorophenol, m-chlorophenol, p-chlorophenol, o-bromophenol, m-bromophenol, p-bromophenol, p-tert -Butylphenol, p-nonylphenol, 2,4-xylenol, 2,5-xylenol, 3,4-xylenol, 3,5-xylenol, resorcinol and the like, but are not limited thereto.
- the first production method is a method of synthesizing a compound represented by the general formula (6) by N-alkylating or N-arylating an isatin represented by the following general formula (7).
- Rx2 has the same meaning as defined in the above formula (2).
- the second production method is a method of synthesizing the compound represented by the general formula (6) from anilines.
- anilines are amidated with oxalyl chloride and then cyclized using heat or Lewis acid (US Pat. No. 5,198,461, International Publication WO2007 / 070362) : (In the formula, R2 and Rx2 have the same meaning as defined in the above formula (2).)
- US Pat. No. 3,553,244 discloses a method of reacting both in a solvent in the presence of a base so that the cyanide halide is always present in excess in excess of the base.
- Japanese Laid-Open Patent Publication No. 7-53497 discloses a method of synthesis using a tertiary amine as a base and using it in excess of cyan chloride.
- JP-T-2000-501138 discloses a method of reacting trialkylamine and cyanogen halide by a continuous plug flow method.
- Patent No. 2991054 was obtained by adding and reacting a phenolic compound with a tertiary amine and a cyanogen halide in the presence of water and a solvent capable of liquid separation, followed by washing with water and separation.
- a method for precipitation purification from a solution using a secondary or tertiary alcohol or a poor hydrocarbon solvent is disclosed.
- Japanese Patent Application Laid-Open No. 2007-277102 synthesizes cyanate esters by reacting naphthols, cyanogen halides and tertiary amines in a two-phase solvent of water and an organic solvent under acidic conditions. A method is disclosed.
- phenol can be cyanated by reacting the phenol compound represented by the above general formula (3) or (5) with cyanogen chloride in a solvent in the presence of a basic compound. Further, a salt of the phenol compound represented by the general formula (3) or (5) and a basic compound is formed in a solution containing water, and then a two-phase interface reaction with cyanogen chloride is performed. Thus, a cyanate ester can also be synthesized.
- a phenol compound represented by the general formula (3) or (5) is dissolved in an organic solvent, a basic compound such as a tertiary amine is added, and then excess cyanogen halide is added. And react.
- cyan halide is always present in excess, it is said that imidocarbonate produced by reaction of phenolate anion with cyanate ester can be suppressed.
- the reaction temperature must be kept at 10 ° C. or lower, preferably 0 ° C. or lower, more preferably ⁇ 10 ° C. or lower.
- the order of dropping the compounds can be arbitrarily selected.
- a basic compound such as a tertiary amine and a cyanogen halide or a solution thereof may be dropped alternately or simultaneously.
- a mixed solution of a basic compound such as a phenol compound and a tertiary amine and a cyanogen halide or a solution thereof can be simultaneously supplied.
- the reaction temperature since a large amount of heat is generated by the exothermic reaction, the reaction temperature must be kept at 10 ° C. or lower, preferably 0 ° C. or lower, more preferably ⁇ 10 ° C. or lower for the purpose of suppressing side reactions. is there.
- the above reaction may be carried out in a batch, semi-batch, or continuous flow manner, and is not particularly limited.
- a basic compound such as a tertiary amine and cyanogen halide are added in an amount of 0.1 to 8 times mol, preferably 1 to 5 times mol to the phenolic hydroxyl group of the phenol compound, and both are reacted.
- the required amount of basic compounds such as tertiary amines and cyanogen halide increases compared to the case where no substituent is present.
- the cyanide halide cyan chloride, cyanogen bromide and the like can be used.
- the basic compound to be used may be either an organic base or an inorganic base, but when an organic solvent is used, an organic base having high solubility in the solvent is preferable.
- organic bases tertiary amines with few side reactions are preferable.
- the tertiary amine may be any of alkylamine, arylamine, and cycloalkylamine, specifically, trimethylamine, triethylamine, methyldiethylamine, tripropylamine, tributylamine, methyldibutylamine, dinonylmethylamine, Examples include dimethylstearylamine, dimethylcyclohexylamine, diisopropylethylamine, diethylaniline, pyridine, and quinoline.
- Solvents used in the reaction include ketone solvents such as acetone, methyl ethyl ketone, and methyl isobutyl ketone, aromatic solvents such as benzene, toluene, and xylene, diethyl ether, dimethyl cellosolve, diglyme, tetrahydrofuran, methyltetrahydrofuran, dioxane, and tetraethylene glycol.
- ketone solvents such as acetone, methyl ethyl ketone, and methyl isobutyl ketone
- aromatic solvents such as benzene, toluene, and xylene
- diethyl ether diethyl ether
- dimethyl cellosolve diglyme
- tetrahydrofuran methyltetrahydrofuran
- dioxane dioxane
- Ether solvents such as dimethyl ether, halogenated hydrocarbon solvents such as methylene chloride, chloroform, carbon tetrachloride, chlorobenzene, alcohol solvents such as methanol, ethanol, 2-propanol, methyl cellosolve, propylene glycol monomethyl ether, N, N -Aprotic polar solvents such as dimethylformamide, N-methylpyrrolidone, 1,3-dimethyl-2-imidazolidone and dimethyl sulfoxide; Examples include, but are not limited to, nitrile solvents such as tonitrile and benzonitrile, nitro solvents such as nitromethane and nitrobenzene, ester solvents such as ethyl acetate and ethyl benzoate, and hydrocarbon solvents such as cyclohexane. is not. Moreover, these solvents can be used alone or in combination of two or more depending on the reaction substrate.
- the reaction can be cooled by immersing the flask in a direct ice bath, salt-ice bath, dry ice-acetone bath, dry ice-methanol bath, or an appropriately controlled temperature acetone or methanol bath.
- a jacketed device by using a jacketed device and circulating an antifreeze solution such as methanol, ethanol, methanol-water, ethanol-water, ethylene glycol-water, and nybrine with appropriately temperature controlled in the jacket, the reaction system May be cooled.
- an antifreeze solution such as methanol, ethanol, methanol-water, ethanol-water, ethylene glycol-water, and nybrine
- a method of mixing a sufficiently cooled solution in consideration of heat of reaction may be employed.
- the hydrogen chloride salt of a basic compound such as a tertiary amine is usually filtered or removed by washing with water.
- a solvent miscible with water the obtained reaction solution is dropped into water and then extracted with an organic solvent immiscible with water, or the precipitated crystals are collected by filtration.
- the object can be obtained.
- the method of using acidic aqueous solutions, such as dilute hydrochloric acid is also taken.
- a drying operation can be performed using a general method such as addition of sodium sulfate or magnesium sulfate.
- the reaction solution is concentrated, precipitated, or crystallized.
- a method of reducing the pressure while maintaining at 150 ° C. or lower is employed.
- a solvent having low solubility can be used.
- an ether solvent, a hydrocarbon solvent such as hexane, or an alcohol solvent is dropped into the reaction solution or dropped backward. The method can be adopted.
- a method of washing the concentrate of the reaction solution and precipitated crystals with an ether solvent, a hydrocarbon solvent such as hexane, or an alcohol solvent can be employed.
- the crystals obtained by concentrating the reaction solution can be re-dissolved and then recrystallized.
- the reaction solution may be simply concentrated or cooled for crystallization.
- the curable resin composition according to the present invention comprises the above-described cyanate ester compound.
- the curable resin composition may contain a cyanate ester compound other than the cyanate ester compound of the present invention, an epoxy resin, an oxetane resin, and / or a compound having a polymerizable unsaturated group.
- Examples of the cyanate ester compound other than the cyanate ester compound according to the present invention include bisphenol A dicyanate, bisphenol F dicyanate, bisphenol M dicyanate, bisphenol E dicyanate, phenol novolac cyanate, cresol novolac cyanate, dicyclohexane. Examples thereof include, but are not limited to, pentadiene novolac type cyanate, tetramethylbisphenol F dicyanate, and biphenol dicyanate. These cyanate ester compounds can be used alone or in combination.
- Examples of the epoxy resin include bisphenol A type epoxy resin, bisphenol F type epoxy resin, biphenyl type epoxy resin, phenol novolac type epoxy resin, cresol novolac type epoxy resin, xylene novolac type epoxy resin, triglycidyl isocyanurate, and alicyclic type.
- An epoxy resin, a dicyclopentadiene novolak type epoxy resin, a biphenyl novolak type epoxy resin, a phenol aralkyl novolak type epoxy resin, a naphthol aralkyl novolak type epoxy resin, and the like are exemplified, but not limited thereto.
- these epoxy resins can be used 1 type or in mixture of 2 or more types.
- oxetane resin examples include alkyl oxetanes such as oxetane, 2-methyloxetane, 2,2-dimethyloxetane, 3-methyloxetane, 3,3-dimethyloxetane, 3-methyl-3-methoxymethyloxetane, 3,3 '-Di (trifluoromethyl) perfluoxetane, 2-chloromethyloxetane, 3,3-bis (chloromethyl) oxetane, OXT-101 (trademark manufactured by Toagosei Co., Ltd.), OXT-121 (manufactured by Toagosei Co., Ltd.) Trademark) and the like, but is not limited thereto. These oxetane resins can be used alone or in combination.
- a known curing catalyst can be used.
- the curing catalyst include metal salts such as zinc octylate, zinc naphthenate, cobalt naphthenate, copper naphthenate, and acetylacetone iron, and compounds having an active hydroxyl group such as phenol, alcohol, and amine.
- an epoxy resin curing agent and / or an oxetane resin curing agent can be used.
- the epoxy resin curing agent include 2-methylimidazole, 2-ethyl-4-methylimidazole, 2-phenylimidazole, 1-cyanoethyl-2-phenylimidazole, 1-cyanoethyl-2-ethyl-4-methylimidazole, Imidazole derivatives such as 2-phenyl-4,5-dihydroxymethylimidazole and 2-phenyl-4-methyl-5-hydroxymethylimidazole, amines such as dicyandiamide, benzyldimethylamine and 4-methyl-N, N-dimethylbenzylamine
- the compound and phosphine group include, but are not limited to, phosphonium phosphorus compounds.
- a well-known cationic polymerization initiator can be used as a oxetane resin hardening
- Commercially available products may also be used.
- Sanade SI60L, Sanade SI-80L, Sanade SI100L (Sanshin Chemical Co., Ltd.), CI-2064 (Nihon Soda Co., Ltd.), Irgacure 261 ( Ciba Japan Co., Ltd.), Adekaoptomer SP-170, Adekaoptomer SP-150 (manufactured by ADEKA Co., Ltd.) and the like can be suitably used.
- the cationic polymerization initiator can also be used as an epoxy resin curing agent. These curing agents may be used alone or in combination of two or more.
- Examples of the compound having a polymerizable unsaturated group which may be contained in the curable resin composition include vinyl compounds such as ethylene, propylene, styrene, divinylbenzene and divinylbiphenyl, methyl (meth) acrylate, 2-hydroxy Ethyl (meth) acrylate, 2-hydroxypropyl (meth) acrylate, polypropylene glycol di (meth) acrylate, trimethylolpropane di (meth) acrylate, trimethylolpropane tri (meth) acrylate, pentaerythritol tetra (meth) acrylate, di Mono- or polyhydric alcohol (meth) acrylates such as pentaerythritol hexa (meth) acrylate, bisphenol A type epoxy (meth) acrylate, bisphenol F type epoxy (meth) acrylate Epoxy (meth) acrylates such as over preparative, benzocyclobutene resins, including
- the curable resin composition contains a compound having a polymerizable unsaturated group
- a known polymerization initiator can be used as necessary.
- the polymerization initiator include peroxides such as benzoyl peroxide, p-chlorobenzoyl peroxide, di-t-butyl peroxide, diisopropyl peroxycarbonate, di-2-ethylhexyl peroxycarbonate, or azobisiso Examples thereof include but are not limited to azo compounds such as butyronitrile.
- the cured product according to the present invention is obtained by curing the above-described curable resin composition with heat or light.
- thermosetting if the curing temperature is too low, curing does not proceed, and if it is too high, the cured product is deteriorated.
- the cured product obtained by curing the resin composition containing the cyanate ester compound according to the present invention includes electrical insulating materials, sealing materials, adhesives, laminated materials, resists, build-up laminated board materials, civil engineering / architecture, It is preferably used as a fixing material, a structural member, a reinforcing agent, a molding material, etc. in the fields of electronics, automobiles, railways, ships, airplanes, sporting goods, arts and crafts.
- a wide range of applications such as aircraft structural members, satellite structural members and railway vehicle structural members that require weather resistance, flame resistance and high mechanical strength, fiber reinforced composite materials for sports, that is, golf club shafts, fishing rods, etc. Can be used for
- Synthesis Example 1 Synthesis of 2-phenyl-3,3-bis (4-hydroxyphenyl) phthalimidine To a solution of phenolphthalein (31.86 g, 100 mmol) in aniline (65 mL, 717 mmol), concentrated hydrochloric acid (36%, 20.5 mL) , 232 mmol) was added dropwise. Water was distilled off while heating in an oil bath so that the internal temperature was 155 to 165 ° C. Heating and stirring were continued until the raw material phenolphthalein disappeared by analysis by liquid chromatography (about 16 hours). Thereafter, the reaction solution was poured into a mixed solution of concentrated hydrochloric acid (36%, 51.4 mL) and water (600 mL).
- the obtained crystals were added to 150 mL of methanol (Mitsubishi Gas Chemical Co., Ltd., 99.9%), stirred for 1 hour under reflux with heating, and allowed to cool to room temperature.
- the precipitated crystals were filtered, washed with methanol and dried to obtain a product (36.32 g, 92.3 mmol, 92% yield).
- the structure of the obtained compound was identified by NMR spectrum using a nuclear magnetic resonance apparatus (JNM-EX270FT-NMR manufactured by JEOL Ltd.).
- Synthesis Example 2 Synthesis of 2- (4-methylphenyl) -3,3-bis (4-hydroxyphenyl) phthalimidine (abbreviated as BisP-PI-NpTol) p-Toluidine (31.8 g, 717 mmol) was heated to 80 ° C. The mixture was dissolved by heating, and concentrated hydrochloric acid (36%, 20.5 mL, 232 mmol) was added dropwise. Thereafter, phenolphthalein (31.8 g, 100 mmol) was added, and water was distilled off while heating in an oil bath so that the internal temperature became 155 to 165 ° C.
- Activated carbon was removed by filtration, and 5.43 g of activated carbon was newly added and stirred for 1 hour. Then, after removing activated carbon by filtration, concentrated hydrochloric acid (36%) was slowly added dropwise to the filtrate until the filtrate became acidic. After stirring overnight, the mixture was filtered, and the crystals were washed with water until the pH of the washing solution was no longer acidic (4 times). The product was obtained by drying the crystals under vacuum using an oil rotary vacuum pump. For liquid chromatography, Hitachi L-7000 series, D-200 chromatographic integrator was used (TSKgel ODS-120T column manufactured by Tosoh Corporation). As a developing solvent, an acetonitrile-water mixed solvent system was used (flow rate: 1 ml / min).
- Synthesis Example 3 Synthesis of 2-phenyl-3,3-bis (4-hydroxy-3-methylphenyl) phthalimidine (abbreviated as BisOCR-PI-NPh) o-cresolphthalein (25.31 g, 73.1 mmol) Concentrated hydrochloric acid (36%, 15.0 mL, 170 mmol) was added dropwise to the aniline (47.5 mL, 524 mmol) solution. Water was distilled off while heating in an oil bath so that the internal temperature was 155 to 165 ° C. Heating and stirring were continued until the raw material phenolphthalein disappeared by analysis by liquid chromatography (about 20 hours).
- the reaction solution was poured into a mixed solution of concentrated hydrochloric acid (36%, 20 mL) and water (600 mL). After stirring for 4 days, the crystals were obtained by filtration and washing with water. The obtained crystals were dissolved in an aqueous solution (200 mL) of sodium hydroxide (8.00 g, 200 mmol), 5 g of activated carbon was added, and the mixture was stirred for 30 minutes. The activated carbon was removed by filtration, and 5 g of activated carbon was newly added and stirred for 30 minutes. After removing activated carbon by filtration, concentrated hydrochloric acid (36%) was slowly added dropwise to the filtrate until the filtrate became acidic.
- Synthesis Example 4 Synthesis of N-methylisatin A solution of isatin (14.70 g, 100 mmol, manufactured by SIGMA-ALDRICH, purity 98%) in dimethylformamide (hereinafter DMF) (500 ml) was brought to 0 ° C. using an ice bath. After cooling, sodium hydride (4.73 g, 118 mmol, manufactured by Tokyo Chemical Industry Co., Ltd., 60% in oil) was added in small portions over 10 minutes using a spatula. After stirring for 15 minutes, methyl iodide (7.5 mL, 120 mmol) was added in small portions using a Komagome pipette over 10 minutes. After stirring at 0 ° C.
- DMF dimethylformamide
- Synthesis Example 5 Synthesis of 1-methyl-3,3-bis (4-hydroxyphenyl) indoline-2-one (abbreviated as BisP-IST-NMe) Crude product of N-methylisatin obtained in Synthesis Example 4 ( 13.6 g, 84.5 mmol) is dissolved in phenol (32.78 g, 348 mmol), and this solution is added to a mixed solution of phenol (15.14 g, 161 mmol) and concentrated hydrochloric acid (36%, 15.0 mL, 170 mmol). It was added in small portions at 2.5 ° C over 2.5 hours. Thereafter, the mixture was stirred at 35 ° C. for 3 hours and then stirred overnight at room temperature.
- BisP-IST-NMe 1-methyl-3,3-bis (4-hydroxyphenyl) indoline-2-one
- a 75% aqueous phosphoric acid solution (0.081 ml) and a 16% aqueous potassium hydroxide solution (8.8 ml) were added and heated at 100 ° C. for 1 hour, and then 124 ml of toluene was added and allowed to cool.
- the produced crystals were filtered and washed well with toluene.
- the obtained product was stirred and washed with hot water, filtered, washed with hot water, and air-dried to obtain the product (18.65 g, 56.3 mmol, 67%, HPLC evaluation: 98 area%).
- the evaluation by liquid chromatography was performed in the same manner as described above. The synthesis scheme is as shown below.
- the structure of the obtained compound was identified by NMR spectrum as described above.
- the NMR spectrum was as shown in FIG. 1 H-NMR: (270 MHz, chloroform-d, internal standard TMS) ⁇ (ppm) 2.19 (s, 6H), 6.82-6.93 (m, 2H), 7.00-7.15 (m, 5H), 7.17-7.35 (m, 5H) ), 7.50-7.63 (m, 2H), 7.9-8.07 (m, 1H)
- Example 1 30 parts by weight of the cyanate ester (BisP-PI-NPh-DC) obtained in Production Example 1 and 70 parts by weight of bisphenol A dicyanate (trademark skylex manufactured by Mitsubishi Gas Chemical Co., Ltd., the same shall apply hereinafter) are mixed and made of fluoro rubber The mixture was heated and melted in an aluminum cup containing an O-ring (S-100, manufactured by Mori Seika Co., Ltd.) and deaerated with a vacuum pump. Then, it suppressed from the top with the aluminum cup, and it hardened by heating at 205 degreeC, 3 hours, 270 degreeC, 4 hours. After cooling, the aluminum cup was opened to obtain a cured product of a cyanate ester compound.
- Example 2 Example 1 except that the cyanate ester (BisP-PI-NpTol-DC) obtained in Production Example 2 was used instead of the cyanate ester (BisP-PI-NPh-DC) used in Example 1. In the same manner as above, a cured product was obtained.
- Example 3 Example 1 except that the cyanate ester (BisOCR-PI-NPh-DC) obtained in Example 3 was used instead of the cyanate ester (BisP-PI-NPh-DC) used in Example 1. In the same manner as above, a cured product was obtained.
- Example 4 Example 1 except that the cyanate ester (BisP-IST-NMe-DC) obtained in Example 4 was used instead of the cyanate ester (BisP-PI-NPh-DC) used in Example 1. In the same manner as above, a cured product was obtained.
- Example 5 A cured product in the same manner as in Example 2 except that the amount of cyanate ester (BisP-PI-NpTol-DC) was changed to 40 parts by weight and the amount of bisphenol A dicyanate was changed to 60 parts by weight.
- the amount of cyanate ester (BisP-PI-NpTol-DC) was changed to 40 parts by weight and the amount of bisphenol A dicyanate was changed to 60 parts by weight.
- Example 6 100 parts by weight of the cyanate ester (BisP-PI-NPh-DC) obtained in Production Example 1 was heated from room temperature at 10 ° C./min and kept at 250 ° C. for 2 hours to obtain a cured product.
- Example 7 100 parts by weight of the cyanate ester (BisP-PI-NpTol-DC) obtained in Production Example 2 was heated from room temperature at 10 ° C./min and kept at 250 ° C. for 2 hours to obtain a cured product.
- Example 8 100 parts by weight of the cyanate ester (BisP-IST-NMe-DC) obtained in Production Example 4 was heated from room temperature at 10 ° C./min and kept at 250 ° C. for 2 hours to obtain a cured product.
- Example 1 instead of using a mixture of 30 parts by weight of cyanate ester and 70 parts by weight of bisphenol A dicyanate, Example was used except that 100 parts by weight of bisphenol A dicyanate (trademark skylex manufactured by Mitsubishi Gas Chemical Co., Ltd.) was used. In the same manner as in Example 1, a cured product was obtained.
- bisphenol A dicyanate trademark skylex manufactured by Mitsubishi Gas Chemical Co., Ltd.
- Measurement method 1 Dynamic viscoelasticity using a viscoelasticity measuring device (AR2000ex manufactured by TA Instruments Japan Co., Ltd.) while raising the temperature at a rate of 3 ° C./min at a strain of 0.1% and a frequency of 15 Hz. The maximum value of the obtained loss tangent was taken as the glass transition temperature.
- Measurement method 2 In accordance with JIS-K7121, using a differential scanning calorimeter (Seiko Instruments, SSC-5200), the temperature was raised to 400 ° C. at a rate of temperature increase of 10 ° C./min under a nitrogen stream and then cooled. Then, the temperature was raised again to 400 ° C. at a temperature rising rate of 10 ° C./min, and differential scanning calorimetry was performed. The midpoint glass transition temperature at that time was defined as the glass transition temperature.
- the glass transition temperature was measured by Measurement Method 1
- the glass transition temperature was measured by Measurement Method 2.
- the measurement results were as shown in Table 1 below.
- a numerical value shows a compounding quantity (weight part) in a table
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Abstract
Description
R1は、炭素数6~10の芳香族置換基、または炭素数1~20のアルキル基を表し、
Rx1は、それぞれ独立して、水素原子、炭素数1~20のアルキル基、アルコキシ基、またはハロゲンを表し、
Ry1は、それぞれ独立して、水素原子、炭素数1~20のアルキル基、アルコキシ基、またはハロゲンを表し、
mは0~4の整数を表し、nは0~4の整数を表す。)
R2は、炭素数6~10の芳香族置換基、または炭素数1~20のアルキル基を表し、
Rx2は、それぞれ独立して、水素原子、炭素数1~20のアルキル基、アルコキシ基、またはハロゲンを表し、
Ry2は、それぞれ独立して、水素原子、炭素数1~20のアルキル基、アルコキシ基、またはハロゲンを表し、
mは0~4の整数を表し、nは0~4の整数を表す。)
上記一般式(1)で表される化合物の製法は、特に限定されず、例えば、下記一般式(3)で表されるフェノールから、シアネート合成として知られる方法により製造することができる。
次に、本発明による硬化性樹脂組成物について説明する。本発明による硬化性樹脂組成物は、上記したシアン酸エステル化合物を含んでなるものである。硬化性樹脂組成物には、本発明のシアン酸エステル化合物以外のシアン酸エステル化合物、エポキシ樹脂、オキセタン樹脂、および/または重合可能な不飽和基を有する化合物等が含まれていてもよい。
本発明による硬化物は、上記した硬化性樹脂組成物を、熱や光などによって硬化させることにより得られる。熱硬化の場合、硬化温度は、低すぎると硬化が進まず、高すぎると硬化物の劣化が起こることから、150℃から300℃の範囲内が好ましい。
フェノールフタレイン(31.86g,100mmol)のアニリン(65mL,717mmol)溶液に濃塩酸(36%,20.5mL,232mmol)を滴下した。内温が155~165℃になるように油浴で加熱しながら、水を留去した。液体クロマトグラフィーによる分析で原料のフェノールフタレインが消失するまで加熱攪拌を続けた(約16時間)。その後、濃塩酸(36%,51.4mL)と水(600mL)との混合溶液に反応溶液を注いだ。30分間攪拌した後、ろ過し水洗することにより結晶を得た。この結晶を水酸化ナトリウム(16.04g,401mmol)の水溶液(800mL)に溶解し、活性炭(5.22g)を加えて1時間攪拌した。活性炭をろ過にて取り除いた後、新たに活性炭5.60gを加えて1時間攪拌した。ろ過にて活性炭をとり除いた後、ろ液が酸性になるまで、ろ液に濃塩酸(36%)をゆっくり滴下した。1晩攪拌した後、ろ過し、洗浄液のpHが酸性でなくなるまで水で結晶を洗い(4回)、油回転式真空ポンプを用い真空下で結晶を乾燥した。得られた結晶を、メタノール(三菱ガス化学株式会社製,99.9%)150mLに加えて、加熱還流下で1時間攪拌し、室温まで放冷した。析出した結晶をろ過した後、メタノールで洗浄、乾燥することにより、生成物を得た(36.32g,92.3mmol,92%収率)。
1H-NMR:(270MHz、DMSO-d6、内部標準TMS)
δ(ppm)6.66(d,4H,J=8.6Hz)、6.92-7.01(m,6H)、7.14-7.28(m,4H)、7.47-7.65(m,2H)、7.83(d,1H,J=6.9Hz)、9.56(s,2H)
p-トルイジン(31.8g,717mmol)を80℃に加温して溶解し、濃塩酸(36%,20.5mL,232mmol)を滴下した。その後フェノールフタレイン(31.8g,100mmol)を加え内温が155~165℃になるように油浴で加熱しながら、水を留去した。液体クロマトグラフィーによる分析で原料のフェノールフタレインがほぼ消失するまで加熱攪拌を続けた(約18時間,HPLC評価:フェノールフタレイン4area%, p-トルイジン20area%,生成物76area%)。濃塩酸(36%,51.4mL)と水(600mL)の混合溶液に反応溶液を注いだ。3日間室温で攪拌後、ろ過し、水洗することにより結晶を得た。得られた結晶を水酸化ナトリウム(10.06g,252mmol)の水溶液(1L)に溶解し、活性炭5.01gを加えて1時間攪拌した。活性炭をろ過にて取り除き、新たに活性炭5.43gを加えて1時間攪拌した。その後、ろ過にて活性炭をとり除いた後、ろ液が酸性になるまで、ろ液に濃塩酸(36%)をゆっくり滴下した。1晩攪拌した後、ろ過し、洗浄液のpHが酸性でなくなるまで水で結晶を洗った(4回)。油回転式真空ポンプを用い真空下結晶を乾燥し、生成物を得た。なお、液体クロマトグラフィーは、日立社製L-7000シリーズ、D-200クロマトインテグレーターを使用した(東ソー社製TSKgel ODS-120Tカラム)。展開溶媒はアセトニトリル-水混合溶媒系を使用した(流速1ml/min)。
1H-NMR:(270MHz、DMSO-d6、内部標準TMS)
δ(ppm)2.20(s,3H)、6.45(d,1H,J=7.9Hz)、6.64(d,4H,J=8.6Hz)、6.73-6.83(m,2H)、6.90-7.05(m,5H)、7.23(d,1H,J=7.6Hz)、7.43-7.63(m,2H)、7.79(d,1H,J=7.3Hz)、9.55(s,2H)
o-クレゾールフタレイン(25.31g,73.1mmol)のアニリン(47.5mL,524mmol)溶液に濃塩酸(36%,15.0mL,170mmol)を滴下した。内温が155~165℃になるように油浴で加熱しながら、水を留去した。液体クロマトグラフィーによる分析で原料のフェノールフタレインが消失するまで加熱攪拌を続けた(約20時間)。濃塩酸(36%,20mL)と水(600mL)との混合溶液に反応溶液を注いだ。4日間攪拌後、ろ過し水洗することにより結晶を得た。得られた結晶を水酸化ナトリウム(8.00g,200mmol)の水溶液(200mL)に溶解し、活性炭5gを加えて30分間攪拌した。活性炭をろ過にて取り除き、新たに活性炭5gを加えて30分間攪拌した。ろ過にて活性炭をとり除いた後、ろ液が酸性になるまで、ろ液に濃塩酸(36%)をゆっくり滴下した。3時間攪拌した後、ろ過し、洗浄液のpHが酸性でなくなるまで水で結晶を洗った(4回)。その後、風乾し、生成物を得た(29.12g,69.1mmol,95%収率, HPLC評価:98area%以上)。なお、液体クロマトグラフィーによる評価は、上記と同様に行った。
1H-NMR:(270MHz、DMSO-d6、内部標準TMS)
δ(ppm)2.17(s,6H)、6.95(d,2H,J=6.6Hz)、7.15-7.29(m,7H)、7.37-7.48(m,3H)、7.55-7.72(m,2H)、7.90(d,1H,J=7.3Hz)
イサチン(14.70g,100mmol,SIGMA-ALDRICH株式会社製,純度98%)のジメチルホルムアミド(以下、DMF)(500ml)溶液を、氷浴を用いて0℃に冷却し、水素化ナトリウム(4.73g,118mmol,東京化成工業株式会社製,60% in oil)を、スパーテルを用いて10分間で少量ずつ加えた。15分攪拌した後、ヨウ化メチル(7.5mL,120mmol)を10分間かけて駒込ピペットを用いて少量ずつ加えた。0℃で1時間攪拌した後、塩酸酸性の水溶液1Lに注いだ。酢酸エチルで抽出後、酢酸エチル相を水で2回洗浄した。濃縮後N-メチルイサチンの粗生成物13.6gを得た(HPLC評価:79area%)。なお、液体クロマトグラフィーによる評価は、上記と同様に行った。
合成例4で得られたN-メチルイサチンの粗生成物(13.6g,84.5mmol)をフェノール(32.78g,348mmol)に溶かし、この溶液をフェノール(15.14g,161mmol)と濃塩酸(36%,15.0mL,170mmol)の混合溶液に、35℃で2.5時間かけて少しずつ加えた。その後35℃で3時間攪拌したのち室温で一晩攪拌した。75%リン酸水溶液(0.081ml)と16%水酸化カリウム水溶液(8.8ml)を加えて100℃で1時間加熱後、トルエン124mlを加えて放冷した。生成した結晶をろ過し、トルエンでよく洗浄した。得られた生成物を熱水で攪拌洗浄したのちろ過し、熱水で洗い、風乾し生成物を得た(18.65g,56.3mmol,67%,HPLC評価:98area%)。なお、液体クロマトグラフィーによる評価は、上記と同様に行った。合成スキームは、以下に示される通りである。
1H-NMR:(270MHz、DMSO-d6、内部標準TMS)
δ(ppm)3.19(s,3H)、6.69(d,4H,J=8.6Hz)、6.90-7.10(m,6H)、7.19-7.33(m,2H)、9.44(s,2H)
<2-フェニル-3,3-ビス(4-シアナトフェニル)フタルイミジン(BisP-PI-NPh-DCと略記)の合成>
合成例1で得られた2-フェニル-3,3-ビス(4-ヒドロキシフェニル)フタルイミジン(30mmol)をジクロロメタン(90mL)に懸濁させ、氷浴中で冷却しながらトリエチルアミン(90mmol)を加え、発熱終了後室温に昇温した。一方、36%塩酸(90mmol)、水(50mL)、40%塩化シアンのジクロロメタン溶液(90mmol,三菱ガス化学株式会社製)、およびジクロロメタン(8mL)をジャケット付きのフラスコに入れ、ジャケット内に-10℃のメタノールを循環させて冷却し、攪拌下、温度を0℃以下に制御しながら上で調製した溶液を滴下した。1時間攪拌後さらにトリエチルアミン(30mmol)のジクロロメタン(9mL)溶液を滴下した。反応終了を液体クロマトグラフィーで確認し、室温に昇温後、有機相を分離した。塩化シアンを減圧留去したのち、水(100mL)で5回洗浄した。有機相を濃縮し生成物を得た。なお、液体クロマトグラフィーによる確認は、上記と同様に行った。
1H-NMR:(270MHz、クロロホルム-d、内部標準TMS)
δ(ppm)6.82-6.94 (m,2H)、7.07-7.36(m,12H)、7.48-7.66(m,2H)、8.03(d,1H,J=6.6Hz)
<2-(4-メチルフェニル)-3,3-ビス(4-シアナトフェニル)フタルイミジン(BisP-PI-NpTol-DCと略記)の合成>
合成例2で得られた2-(4-メチルフェニル)-3,3-ビス(4-ヒドロキシフェニル)フタルイミジン(30mmol)をジクロロメタン(90mL)に懸濁させ、氷浴中で冷却しながらトリエチルアミン(90mmol)を加え、発熱終了後室温に昇温した。一方、36%塩酸(90mmol)、水(50mL)、40%塩化シアンのジクロロメタン溶液(90mmol)、およびジクロロメタン(8mL)をジャケット付きのフラスコに入れ、ジャケット内に-10℃のメタノールを循環させて冷却し、攪拌下、温度を0℃以下に制御しながら上記の溶液を滴下した。1時間攪拌後さらにトリエチルアミン(30mmol)のジクロロメタン(9mL)溶液を滴下した。反応終了を液体クロマトグラフィーで確認し、室温に昇温後、有機相を分離した。塩化シアンを減圧留去したのち、水(100mL)で5回洗浄した。有機相を濃縮し生成物を得た。なお、液体クロマトグラフィーによる確認は、上記と同様に行った。
1H-NMR:(270MHz、クロロホルム-d、内部標準TMS)
δ(ppm)2.29(s,3H)、6.71(d,2H,J=8.2Hz)、7.01(d,2H,J=4.2Hz)、7.06-7.14(m,1H)、7.17-7.33(m,8H)、7.48-7.69(m,2H)、7.97-8.08(m,1H)
<2-フェニル-3,3-ビス(4-シアナト-3-メチルフェニル)フタルイミジン(BisOCR-PI-NPh-DCと略記)の合成>
合成例3で得られた2-フェニル-3,3-ビス(4-ヒドロキシ-3-メチルフェニル)フタルイミジン(30mmol)をジクロロメタン(90mL)に懸濁させ、氷浴中で冷却しながらトリエチルアミン(90mmol)を加え、発熱終了後室温に昇温した。一方、36%塩酸(90mmol)、水(50mL)、40%塩化シアンのジクロロメタン溶液(90mmol)、およびジクロロメタン(8mL)をジャケット付きのフラスコに入れ、ジャケット内に-10℃のメタノールを循環させて冷却し、攪拌下、温度を0℃以下に制御しながら上で調製した溶液を滴下した。1時間攪拌後さらにトリエチルアミン(30mmol)のジクロロメタン(9mL)溶液を滴下した。反応終了を液体クロマトグラフィーで確認し、室温に昇温後、有機相を分離した。塩化シアンを減圧留去したのち、水(100mL)で5回洗浄した。有機相を濃縮し生成物を得た。なお、液体クロマトグラフィーによる確認は、上記と同様に行った。
1H-NMR:(270MHz、クロロホルム-d、内部標準TMS)
δ(ppm)2.19(s,6H)、6.82-6.93(m,2H)、7.00-7.15(m,5H)、7.17-7.35(m,5H)、7.50-7.63(m,2H)、7.99-8.07(m,1H)
<1-メチル-3,3-ビス(4-シアナトフェニル)インドリン-2-オン(BisP-IST-NMe-DCと略記)の合成>
合成例5で得られた1-メチル-3,3-ビス(4-ヒドロキシフェニル)インドリン-2-オン(30mmol)をDMF(50mL)に懸濁させ、氷浴中で冷却しながらトリエチルアミン(90mmol)を加えた。一方、40%塩化シアンのジクロロメタン溶液(135mmol)とDMF(15ml)の溶液をジャケット付きのフラスコに入れ、ジャケット内に-10℃のメタノールを循環させて冷却し、攪拌下、温度を0℃以下に制御しながら上で調製した溶液を滴下した。1時間攪拌後さらにトリエチルアミン(30mmol)のDMF(10mL)溶液を滴下した。反応終了を液体クロマトグラフィーで確認し、室温に昇温した。塩化シアンを減圧留去したのち、塩化メチレン(300ml)を加えて水(150mL)で5回洗浄した。有機相を濃縮し生成物を得た。なお、液体クロマトグラフィーによる確認は、上記と同様に行った。
1H-NMR:(270MHz、クロロホルム-d、内部標準TMS)
δ(ppm)3.32(s,3H)、6.99(d,1H,J=7.6Hz)、7.11-7.43(m,11H)
製造例1において得られたシアン酸エステル(BisP-PI-NPh-DC)30重量部とビスフェノールAジシアネート(三菱ガス化学株式会社製 商標skylex、以下同じ)70重量部とを混合し、フッ素ゴム製Oリング(S-100:株式会社森清化工製)を入れたアルミカップ中にて加熱溶融させて真空ポンプで脱気した。その後、アルミカップで上から抑え、205℃,3時間、270℃,4時間加熱して硬化させた。冷却後、アルミカップを開けて、シアン酸エステル化合物の硬化物を得た。
実施例1で用いたシアン酸エステル(BisP-PI-NPh-DC)に代えて、製造例2で得られたシアン酸エステル(BisP-PI-NpTol-DC)を用いた以外は、実施例1と同様にして硬化物を得た。
実施例1で用いたシアン酸エステル(BisP-PI-NPh-DC)に代えて、実施例3で得られたシアン酸エステル(BisOCR-PI-NPh-DC)を用いた以外は、実施例1と同様にして硬化物を得た。
実施例1で用いたシアン酸エステル(BisP-PI-NPh-DC)に代えて、実施例4で得られたシアン酸エステル(BisP-IST-NMe-DC)を用いた以外は、実施例1と同様にして硬化物を得た。
実施例2において、シアン酸エステル(BisP-PI-NpTol-DC)の配合量を40重量部とし、ビスフェノールAジシアネートの配合量を60重量部に代えた以外は実施例2と同様にして硬化物を得た。
製造例1において得られたシアン酸エステル(BisP-PI-NPh-DC)100重量部を室温から10℃/minで昇温し、250℃にて2時間保持し硬化物を得た。
製造例2で得られたシアン酸エステル(BisP-PI-NpTol-DC)100重量部を室温から10℃/minで昇温し、250℃にて2時間保持し硬化物を得た。
製造例4で得られたシアン酸エステル(BisP-IST-NMe-DC)100重量部を室温から10℃/minで昇温し、250℃にて2時間保持し硬化物を得た。
実施例1において、シアン酸エステル30重量部とビスフェノールAジシアネート70重量部との混合物を用いる代わりに、ビスフェノールAジシアネート(三菱ガス化学株式会社製 商標skylex)100重量部を用いた以外は、実施例1と同様にして硬化物を得た。
上記のようにして得られた硬化物から、約50mm×約5mm×約2mmの小片を切り出しまたは採取し、後記するガラス転移温度測定用の試料とした。この試料を用いて、下記の2種の方法により、ガラス転移温度を測定した。なお、ガラス転移温度が高いほど、硬化物の耐熱性が優れるといえる。
測定方法1:粘弾性測定装置(ティー・エイ・インスツルメント・ジャパン社製 AR2000ex)を使用し、歪み0.1%、周波数15Hzで3℃/分の割合で昇温しながら動的粘弾性の測定を行い、得られた損失正接の極大値をガラス転移温度とした。
測定方法2:JIS-K7121に準拠し、示差走査熱量計(セイコーインスツル社製、SSC-5200)を用い、窒素気流下、昇温速度10℃/分で400℃まで昇温した後冷却し、昇温速度10℃/分で400℃まで再昇温し示差走査熱量測定を実施した。その際の中間点ガラス転移温度をガラス転移温度とした。
Claims (12)
- 前記一般式(1)において、R1が、炭素数6~10の芳香族置換基、または炭素数1~10のアルキル基を表し、Rx1が、それぞれ独立して、水素原子、炭素数1~10のアルキル基、またはハロゲンを表わし、Ry1が、それぞれ独立して、水素原子、炭素数1~10のアルキル基、またはハロゲンを表す、請求項1記載のシアン酸エステル化合物。
- 前記一般式(1)において、R1が、炭素数6~10の芳香族置換基、またはメチル基、エチル基、n-プロピル基、もしくはi-プロピル基を表し、Rx1が、それぞれ独立して、水素原子、炭素数1~5のアルキル基、またはハロゲンを表し、Ry1が、それぞれ独立して、水素、炭素数1~5のアルキル基、またはハロゲンを表す、請求項1記載のシアン酸エステル化合物。
- 前記一般式(1)において、R1が、炭素数6の芳香族置換基またはメチル基もしくはエチル基を表し、Rx1が、それぞれ独立して、水素原子、または炭素数1~3のアルキル基を表し、Ry1が、それぞれ独立して、水素原子、または炭素数1~3のアルキル基を表す、請求項1記載のシアン酸エステル化合物。
- 前記一般式(1)において、R1が、フェニル基またはメチル基を表し、Rx1が、水素原子を表わし、Ry1が、それぞれ独立して、水素原子またはメチル基を表す、請求項1記載のシアン酸エステル化合物。
- 前記一般式(2)において、R2が、炭素数6~10の芳香族置換基、または炭素数1~10のアルキル基を表し、Rx2が、それぞれ独立して、水素原子、炭素数1~10のアルキル基、またはハロゲンを表し、Ry2が、それぞれ独立して、水素原子、炭素数1~10のアルキル基、またはハロゲンを表す、請求項2記載のシアン酸エステル化合物。
- 前記一般式(2)において、R2が、炭素数6~10の芳香族置換基、またはメチル基、エチル基、n-プロピル基もしくはi-プロピル基を表し、Rx2が、それぞれ独立して、水素原子、炭素数1~5のアルキル基またはハロゲンを表し、Ry2が、それぞれ独立して、水素、炭素数1~5のアルキル基またはハロゲンを表す、請求項2記載のシアン酸エステル化合物。
- 前記一般式(2)において、R2が、炭素数6の芳香族置換基、またはメチル基もしくはエチル基を表し、Rx2が、それぞれ独立して、水素原子または炭素数1~3のアルキル基を表わし、Ry2が、それぞれ独立して、水素原子または炭素数1~3のアルキル基を表す、請求項2記載のシアン酸エステル化合物。
- 前記一般式(2)において、R2が、フェニル基またはメチル基を表し、Rx2が、水素原子を表し、Ry2が、それぞれ独立して、水素原子またはメチル基を表す、請求項2記載のシアン酸エステル化合物。
- 請求項1~10のいずれか一項に記載のシアン酸エステル化合物を含んでなる、硬化性樹脂組成物。
- 請求項11記載の硬化性樹脂組成物を硬化させてなる硬化物。
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CN2011800067824A CN103025713A (zh) | 2010-01-20 | 2011-01-18 | 氰酸酯化合物及其固化物 |
EP11734628.8A EP2527324A4 (en) | 2010-01-20 | 2011-01-18 | CYANATE STARTER COMPOUND AND HARDENING PRODUCT THEREOF |
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WO2015060418A1 (ja) * | 2013-10-25 | 2015-04-30 | 三菱瓦斯化学株式会社 | シアン酸エステル化合物、該化合物を含む硬化性樹脂組成物及びその硬化物 |
KR20170036733A (ko) * | 2014-07-22 | 2017-04-03 | 사빅 글로벌 테크놀러지스 비.브이. | 고열 단량체 및 그를 이용하는 방법 |
WO2016123458A1 (en) | 2015-01-29 | 2016-08-04 | Drexel University | Thermoset polymers having a triazine network obtained by reaction of cyanate esters with dicyanamide room temperature ionic liquids |
JP6915586B2 (ja) * | 2018-04-26 | 2021-08-04 | 信越化学工業株式会社 | 熱硬化性樹脂組成物 |
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TW201134807A (en) | 2011-10-16 |
US20130023640A1 (en) | 2013-01-24 |
JPWO2011090022A1 (ja) | 2013-05-23 |
EP2527324A1 (en) | 2012-11-28 |
US8779162B2 (en) | 2014-07-15 |
CN103025713A (zh) | 2013-04-03 |
EP2527324A4 (en) | 2013-08-07 |
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