TW201518431A - Thermocurable resin composition, cured product thereof, and display component using the same - Google Patents

Abstract

PROBLEMTO BE SOLVED: To provide a thermocurable resin composition having excellent insulation property and thermal resistance and capable of achieving surface flatness, adhesion and curability with high level and balance and excellent in both high temperature insulating resistance and solvent resistance required for the fabrication process, its cured product and a display component using the same. SOLUTION: A thermocurable resin composition characterized by comprising (a) carboxyl-containing resin as the thermocurable component, (b) epoxy resin, (c) black coloring agent, and (d) at least one selected from the group consisting of barium sulfate, silica and talc.

Description

Thermosetting resin composition, cured product thereof, and display member using the same

The present invention provides a thermosetting resin composition capable of forming a cured product capable of achieving surface flatness, adhesion, and hardenability at a high level and having high temperature insulation resistance and solvent resistance, and A member for a display having the cured product.

In recent years, a touch panel type input device (hereinafter simply referred to as "touch panel") has been introduced as an operation unit on a screen of various electronic devices, including a mobile phone, a personal mobile information terminal, and a notebook computer. In a liquid crystal display device including a touch panel, the touch panel is mounted and fixed after being aligned on a polarizing plate of a display panel of a liquid crystal display device. Further, in the mobile phone or tablet device, when the liquid crystal display portion is viewed from the user side, information or an image is not displayed on the entire transparent glass, and the display portion is displayed on the outer peripheral portion of the substrate. The way is done with a blackened or whitened frame and the information is displayed inside the frame.

This part of the frame is called the decoration part, but it is tied When the display portion is divided into a four-corner shape, it also has a function of shielding a portion that is desired not to be seen (a wiring portion for a touch panel, etc.) from being obscured. Since the decorative part is a part that directly enters the line of sight, it is very important as an appearance device member of the display device of the portable terminal device, and particularly attention is paid to the design. Therefore, as the material, it is possible to form A thermosetting resin composition having a high level and a good balance to achieve color, adhesion, and hardenability, and having a high-temperature insulation resistance and a solvent-resistant cured product which are required in the processing process are required.

Conventionally, as such a thermosetting resin composition, for example, Patent Document 1 discloses that (A) a bismaleimide-triazine resin, (B) an epoxy resin, and (C) carbon are contained. Black composition.

[Previous Technical Literature] [Patent Literature]

[Patent Document 1] Japanese Laid-Open Patent Publication No. 62-266805

In recent years, the level of adhesion required for a curable resin composition containing an epoxy resin is improved, and in particular, both hardenability and adhesion are required, and both high-temperature insulation resistance and solvent resistance are required. Sexually curable resin composition. However, as described in the above Patent Document 1, In the conventional curable composition, it is not possible to achieve adhesion and hardenability at a high level and balance, and to have high-temperature insulation resistance and solvent resistance.

Therefore, an object of the present invention is to provide an insulating property and an excellent heat resistance, and it is possible to achieve surface flatness, adhesion, and hardenability at a high level and balance, and high-temperature insulation resistance and resistance necessary in a manufacturing process. A thermosetting resin composition excellent in both of the solvents, a cured product thereof, and a member for display using the same.

In order to solve the above problems, the present inventors have found that a composition containing a specific carboxyl group-containing resin, an epoxy resin, a black colorant, and a specific insulating filler is insulative, heat-resistant, and adhesive. The solvent resistance is excellent, and thus the present invention has been completed.

That is, the present invention provides the following (1) to (5).

(1) A thermosetting resin composition comprising: (a) a carboxyl group-containing resin as a thermosetting component, (b) an epoxy resin, (c) a black colorant, and (d) sulfuric acid At least one selected from the group consisting of cerium, cerium oxide and talc.

(2) The thermosetting resin composition according to (1), further comprising (e) a coloring agent other than black.

(3) The thermosetting resin composition according to (1) or (2), further comprising a decane coupling agent.

(4) A cured product of the thermosetting resin composition according to any one of (1) to (3), which is formed on On the substrate.

(5) A member for a display characterized by comprising the cured product according to (4) above.

According to the present invention, it is possible to provide an excellent insulating property and heat resistance, and it is possible to form a cured product which can achieve surface flatness, adhesion, and hardenability at a high level and balance, and which has high-temperature insulation resistance and solvent resistance. A thermosetting resin composition. Further, the curable resin composition of the present invention is suitable as a decorative ink for use in a display device.

The curable resin composition of the present invention (hereinafter also referred to as "the composition of the present invention") includes (a) a carboxyl group-containing resin as a thermosetting component, (b) an epoxy resin, and (c) The black coloring agent and (d) at least one selected from the group consisting of barium sulfate, cerium oxide, and talc (hereinafter also referred to as "insulating filler").

Hereinafter, each component used in the composition of the present invention will be described in detail.

[(a) a carboxyl group-containing resin as a thermosetting component]

The resin containing a carboxyl group contained in the thermosetting resin composition of the present invention is a component for causing a thermosetting reaction with an epoxy resin, and specific examples thereof include the resins listed below.

(1) a carboxyl group-containing copolymer resin obtained by copolymerizing one or more of an unsaturated carboxylic acid such as (meth)acrylic acid and a compound having an unsaturated double bond; (2) One or more copolymers of an unsaturated carboxylic acid such as methyl acrylate or the like and a compound having an unsaturated double bond, by glycidyl (meth) acrylate or 3,4-epoxycyclohexyl a compound having an epoxy group and an unsaturated double bond such as a methyl (meth) acrylate or a (meth)acrylic acid chloride or the like, wherein an ethylenically unsaturated group is added as a pendant, whereby a obtained carboxyl group-containing resin; (3) a compound having an epoxy group and an unsaturated double bond such as glycidyl (meth) acrylate or 3,4-epoxycyclohexylmethyl (meth) acrylate And a copolymer of a compound having an unsaturated double bond other than the above, reacting with an unsaturated carboxylic acid such as (meth)acrylic acid, and reacting the resulting secondary hydroxyl group with a polybasic acid anhydride to obtain a carboxyl group. a resin; (4) an acid anhydride having an unsaturated double bond such as maleic anhydride; a copolymer of a compound having an unsaturated double bond, a carboxylic acid-containing resin obtained by reacting a compound having a hydroxyl group and an unsaturated double bond, such as 2-hydroxyethyl (meth) acrylate; (5) a carboxyl group-containing resin obtained by reacting a functional epoxy compound with an unsaturated monocarboxylic acid to react a generated hydroxyl group with a saturated or unsaturated polybasic acid anhydride; (6) polymerizing a hydroxyl group containing a polyvinyl alcohol derivative or the like After reacting with a saturated or unsaturated polybasic acid anhydride, the resulting carboxylic acid is separated from one molecule a resin having a carboxyl group obtained by reacting a compound having an epoxy group and an unsaturated double bond; (7) a polyfunctional epoxy compound, an unsaturated monocarboxylic acid, having at least one alcoholic hydroxyl group in one molecule, And a carboxyl group-containing resin obtained by reacting a reaction product of a compound having one reactive group other than an alcoholic hydroxyl group reactive with an epoxy group with a saturated or unsaturated polybasic acid anhydride; (8) having at least 2 in one molecule The polyfunctional oxetane compound of the oxetane ring is reacted with an unsaturated monocarboxylic acid to react a primary hydroxyl group of the obtained modified oxetane resin with a saturated or unsaturated polybasic acid anhydride The obtained carboxyl group-containing resin; and (9) after reacting the polyfunctional epoxy resin with the unsaturated carboxylic acid, the carboxylic acid-containing resin obtained by reacting the polycarboxylic acid anhydride further has one epoxy in the molecule The resin containing a carboxyl group obtained by reacting a compound having one or more ethylenically unsaturated groups with an ethane ring, and the like, may be mentioned, but is not limited thereto.

Among these, the carboxyl group-containing resin of the above (2), (5), (7), and (9) is preferable, and in particular, from the viewpoint of thermosetting property and hardening film property, the above (5) The resin containing a carboxyl group is preferred. In addition, the term "(meth)acrylate" means the term acrylate, methacrylate, and the like, and the similar expressions are the same for the following other similar expressions.

Further, the acid value of the carboxyl group-containing resin is preferably in the range of 10 to 150 mgKOH/g, more preferably 30 to 100 mgKOH/g. If the acid value of the resin containing a carboxyl group is 10 mgKOH/g or more, the density is The properties are more favorable, and if it is 50 mgKOH/g or less, the thermal stability of the cured product is further improved.

Further, the mass average molecular weight of the carboxyl group-containing resin varies depending on the resin skeleton, but is generally from 1,000 to 30,000, and more preferably from 5,000 to 20,000. When the mass average molecular weight is 1,000 or more, the non-stick property is further improved, and the hardness of the cured product is also more sufficient. Further, when the mass average molecular weight is 20,000 or less, the adhesion and the curability can be more satisfactorily balanced.

The blending amount of the carboxyl group-containing resin is preferably 15 to 60 parts by mass, more preferably 25 to 50 parts by mass, per 100 parts by mass of the nonvolatile component of the total composition. When the amount is 15 parts by mass or more, the deep curing property is more sufficient. When the amount is 50 parts by mass or less, the viscosity is optimized, and the coating property or the like is not lowered.

[(b) Epoxy resin]

The epoxy resin (b) used in the thermosetting resin composition of the present invention is a component for imparting heat resistance, and preferably contains an epoxy compound having an aromatic skeleton. The epoxy compound having an aromatic skeleton may be used alone or in combination of two or more. Further, from the viewpoint of further improving the adhesion between the glass substrate and the molded body, the epoxy compound is preferably an epoxy compound having an alicyclic skeleton. The epoxy compound having an alicyclic skeleton may be used alone or in combination of two or more. In addition, a modified epoxy resin can also be used in combination.

An epoxy compound having an aromatic skeleton is exemplified by: a bisphenol A type epoxy compound, a bisphenol F type epoxy compound, a cresol novolac type epoxy compound, a phenol novolak type epoxy compound, and a polybasic acid compound having an aromatic skeleton is reacted with epichlorohydrin A glycidyl ester type epoxy compound, a glycidyl ether type epoxy compound having an aromatic skeleton, and the like. From the viewpoint of further improving the strength and heat resistance of the molded body, the epoxy compound having an aromatic skeleton preferably has a bisphenol skeleton or a novolak skeleton.

The epoxy equivalent of the epoxy compound having an aromatic skeleton is preferably 100 or more and 1,000 or less. When the epoxy equivalent is 100 or more, the formability of the curable composition is further improved. When the epoxy equivalent is 1000 or less, the strength of formability is further improved.

Specific examples of the epoxy compound having the above alicyclic skeleton include 2-(3,4-epoxy)cyclohexyl-5,5-spiro-(3,4-epoxy)cyclohexane-m. - Dioxane, 3,4-epoxycyclohexenylmethyl-3',4'-epoxycyclohexenecarboxylate, dicyclopentadiene dioxide, vinylcyclohexene monooxide 1,2-epoxy-4-vinylcyclohexane, 1,2:8,9-diepoxylimene, ε-caprolactone modified tetrakis(3,4-epoxycyclohexylmethyl)butane A 1,2-epoxy-4-(2-oxiranyl)cyclohexane adduct of tetracarboxylic acid ester or 2,2-bis(hydroxymethyl)-1-butanol. From the viewpoint of further improving the heat resistance of the molded body, the epoxy compound having an alicyclic skeleton is preferably 1,2-epoxy of 2,2-bis(hydroxymethyl)-1-butanol- 4-(2-oxiranyl)cyclohexane adduct.

A commercially available product of the epoxy compound having the above alicyclic skeleton may, for example, be PNE-177 manufactured by Changchun Synthetic Resin Factory Co., Ltd. (phenol novolak type epoxy resin), CNE-200EL (cresol novolac type epoxy resin), BNE200D75 (bisphenol A type novolac epoxy resin), CELLOXIDE 2021, CELLOXIDE 2021A, CELLOXIDE 2021P manufactured by Daicel Chemical Co., Ltd. CYCLOMER A200 exemplified by CELLOXIDE 2081, CELLOXIDE 2000, CELLOXIDE 3000, (meth) acrylate compound having epoxy group, methyl group having methyl glycidyl group like CYCLOMER M100, MGMA Acrylate, CYRACURE, manufactured by Dow Chemical Co., Ltd., and the like. It is not limited to this.

The blending amount of the epoxy compound is appropriately adjusted so as to be moderately hardened by imparting heat, and is not particularly limited. The blending amount of the epoxy compound is preferably 10 parts by mass or more and 60 parts by mass or less, more preferably 20 parts by mass or more and 50 parts by mass or less, based on 100 parts by mass of the above-mentioned (a) carboxyl group-containing resin. It is preferably 25 parts by mass or more and 45 parts by mass or less. When the blending amount of the epoxy compound is in the above range, the curable composition is more effectively cured by heating, and the heat resistance of the molded body is further improved.

[(c) Black colorant]

The black coloring agent contained in the composition of the present invention may be any one which exhibits black color and does not chemically react with the above-mentioned carboxyl group-containing resin or epoxy resin, for example, CIPigment black 6, 7, 9, and 18. The carbon black-based coloring agent shown, the graphite-based coloring agent shown by CIPigment black 8, 10, etc., CIPigment black 11, 12, and 27, An iron oxide-based coloring agent represented by Pigment Brown 35 or the like: an iron oxide of KN-370 manufactured by Toda Industries, Ltd., a titanium black of 13M manufactured by Mitsubishi Materials Co., Ltd., and a coloring agent represented by CIPigment black 20, etc. , a cobalt oxide-based coloring agent such as CIPigment black 13, 25, and 29, an acidified copper-based coloring agent such as CIPigment black 15 and 28, and a manganese-based coloring such as CIPigment black 14 and 26 Agent, bismuth oxide based colorant shown by CIPigment black 23, nickel oxide based coloring agent shown by CIPigment black 30, enamel coloring agent shown by CIPigment black 31, 32, Pigment Black The aniline-based coloring agent and molybdenum sulfide or strontium sulfide shown in 1 can also be exemplified as suitable coloring agents. These coloring agents may be used singly or in combination as appropriate.

Particularly preferred is carbon black, and examples thereof include carbon black manufactured by Mitsubishi Chemical Corporation, M-40, M-45, M-50, MA-8, MA-100, and carbon black 1255 manufactured by Columbia Chemicals Company.

When the blending amount of the black colorant is too large, the insulation property is lowered, and the cost is also increased. Further, if the amount is too small, the color or the opacity may be insufficient. The amount of the non-volatile component of the thermosetting composition of the present invention is preferably from 1 to 25 parts by mass, more preferably from 3 to 20 parts by mass.

[(d) at least one of barium sulfate, cerium oxide, and talc]

(d) Insulating at least one selected from the group consisting of barium sulfate, cerium oxide and talc used in the thermosetting resin composition of the present invention The filler not only improves the high-temperature insulation resistance of the cured product by use, but also improves the surface flatness, suppresses deformation caused by heating of the processing process, and maintains surface flatness, thereby preventing scratches. Or microcrack. In particular, from the viewpoint of improving the flatness of the surface, the insulating filler preferably contains barium sulfate. On the other hand, from the viewpoint of preventing microcracks, it is more preferable that the insulating filler contains at least one of talc and cerium oxide.

In terms of the particle diameter of the insulating filler, the average particle diameter of barium sulfate is preferably 0.05 to 5.00 μm, the average particle diameter of ceria is 0.1 to 5.0 μm, and the average particle diameter of talc is 0.1 to 5.0 μm. When the average particle diameter of the insulating filler is at most the upper limit of the above range, the dispersibility or surface flatness is further improved. In addition, when the average particle diameter of the insulating filler is at least the lower limit of the above range, the hardenability or high-temperature electrical resistance is further improved.

In view of further improving the high-temperature insulation resistance, the total blending amount of the insulating filler is preferably 30 to 70 by mass based on 100 parts by mass of the total of the (a) carboxyl group-containing resin and (b) epoxy resin. More preferably, it is 40 to 60 parts by mass. Further, barium sulfate, cerium oxide, and talc may be used commercially.

Commercially available products of barium sulfate include: sedimentary barium sulfate #100, sedimentary barium sulfate #300, sedimentary barium sulfate SS-50, BARIACE B-30, BARIACE B-31, BARIACE B-32, BARIACE B -33, BARIACE B-34, BARIFINE BF-1, BARIFINE BF-10, BARIFINE BF-20, BARIFINE BF-40 (manufactured by Huan Chemical Industry Co., Ltd.), surface-treated barium sulfate B-30, B-34 (manufactured by Nippon Chemical Industry Co., Ltd.), W-1, W-6, W-10, C-300 (manufactured by Takehara Chemical Industry Co., Ltd.) .

Commercial products of cerium oxide include AEROSIL 50, AEROSIL 200, AEROSIL 380, AEROSIL A300, etc. A series, RY300, etc. RY series (made by Japan AEROSIL Co., Ltd.); WACKER HDK S13, WACKER HDK V15, WACKER HDK N20 (all manufactured by Asahi Kasei Corporation); "FINESILB" (product name, manufactured by TOKUYAMA Co., Ltd.), "FINESIL" (manufactured by TOKUYAMA Co., Ltd.), "SYLYSIA" (made by FUJI SILYSIA Chemical Co., Ltd.), SNOWTEX UP, SNOWTEX OUP (Nissan Chemical Industry) Company system), Nipsil L-300, Nipsil KQ (manufactured by NIPPON SILICA Industrial Co., Ltd.), etc.

Commercial products of talc powder include LMS-100, LMS-200, LMS-300, LMS-3500, LMS-400, LMP-100, PKP-53, PKP-80, PKP-81 (FUJI TALC Industry) Company system), D-600, D-800, D-1000, P-2, P-3, P-4, P-6, P-8, SG-95 (manufactured by Nippon Talc Co., Ltd.). These systems can be used alone or in combination.

[decane coupling agent]

The thermosetting resin composition of the present invention preferably further contains a decane coupling agent. By using a coupling agent, not only the adhesion to the glass substrate which can withstand boiling water for 1 hour can be obtained, but also the adhesion between the thermosetting component and the insulating filler in the molded body is good. Decane coupling agent can only One type may be used, or two or more types may be used in combination.

The decane coupling agent is not particularly limited, and examples thereof include a general epoxy decane coupling agent, an amino decane coupling agent, a cationic decane coupling agent, a vinyl decane coupling agent, a decyl methacrylate coupling agent, and a decyl decane. A coupling agent and a composite coupling agent thereof.

The blending amount of the decane coupling agent is preferably 0.1 to 10 parts by mass based on 100 parts by mass of the total of the (a) carboxyl group-containing resin and (b) epoxy resin. When the amount is 0.1 part by mass or more, the effect is more remarkable. When the amount is 10 parts by mass or less, the thermosetting resin composition is not thickened, and the cost is also advantageous. More preferably, it is 8 mass parts or less, and still more preferably 1 to 5 mass parts.

Commercial products of the decane coupling agent include, for example, KA-1003, KBM-1003, KBE-1003, KBM-303, KBM-403, KBE-402, KBE-403, KBM-1403, KBM-502, KBM. -503, KBE-502, KBE-503, KBM-5103, KBM-602, KBM-603, KBE-603, KBM-903, KBE-903, KBE-9103, KBM-9103, KBM-573, KBM-575 , KBM-6123, KBE-585, KBM-703, KBM-802, KBM-803, KBE-846, KBE-9007 (all are trade names, manufactured by Shin-Etsu Silicone Co., Ltd.), Silquest A-186, Silquest A- 187 (all are trade names, manufactured by Momentive Performance Materials) and the like. These may be used alone or in combination of two or more.

Further, in the composition of the present invention, the following additives may be included to adjust the desired physical properties or the manufacturing process as needed. Manufacturing conditions used.

[hardening catalyst]

The hardening catalyst may be blended in order to promote the hardening speed or to lower the heating temperature. Examples of the hardening catalyst include imidazole, 2-methylimidazole, 2-ethylimidazole, 2-ethyl-4-methylimidazole, 2-phenylimidazole, 4-phenylimidazole, and 1-cyano group. Imidazole derivatives such as ethyl-2-phenylimidazole, 1-(2-cyanoethyl)-2-ethyl-4-methylimidazole; dicyandiamide, benzyldimethylamine , 4-(dimethylamine)-N,N-dimethylbenzylamine, 4-methoxy-N,N-dimethylbenzylamine, 4-methyl-N,N-dimethyl An amine compound such as benzylamine, a hydrazine compound such as diammonium adipate or bismuth sebacate; a phosphorus compound such as triphenylphosphine or the like. For example, a commercially available hardening catalyst is, for example, 2MZ-A, 2MZ-OK, 2PHZ, 2P4BHZ, 2P4MHZ (all trade names of imidazole compounds) manufactured by Shikoku Chemicals Co., Ltd., and U manufactured by SAN-APRO Co., Ltd. -CAT3503N, U-CAT3502T (all trade names of blocked isocyanate compounds of dimethylamine), TNK 110 Dyhard (dicyandiamine), DBU, DBN, U-CATSA102, U manufactured by Ningxia Shizuishan National Chemical Group Co., Ltd. -CAT5002 (all of which are bicyclic guanidine compounds and their salts). These may be used alone or in combination of two or more.

[light stabilizer]

Further, in the thermosetting resin composition of the present invention, a hindered amine light stabilizer can be blended for the purpose of reducing photodegradation of the cured product.

Examples of the hindered amine light stabilizers include: TINUVIN 622LD, TINUVIN 144; CHIMASSORB944LD, CHIMASSORB 119FL (all of which are manufactured by BASF JAPAN); MARK LA-57, LA-62, LA-67, LA-63, LA -68 (all of which are manufactured by ADEKA); Sanol LS-770, LS-765, LS-292, LS-2626, LS-1114, LS-744 (all of which are manufactured by Sankyo Lifetech Co., Ltd.).

[Adhesion promoter]

In the thermosetting resin composition of the present invention, an adhesion promoter can be used in order to improve the adhesion between the layers or the adhesion to a substrate such as polyimide. The adhesion promoter may, for example, be benzimidazole or benzo Oxazole, benzothiazole, 2-mercaptobenzimidazole, 2-mercaptobenzoene Azole, 2-mercaptobenzothiazole (trade name: ACCEL M manufactured by Kawaguchi Chemical Industry Co., Ltd.), 3-morpholinomethyl-1-phenyl-triazole-2-thione, 5-amino-3-morpholine Methyl-thiazole-2-thione, 2-mercapto-5-methylthio-thiadiazole, triazole, tetrazole, benzotriazole, carboxybenzotriazole, benzotriazole containing an amine group, A decane coupling agent or the like. These may be used alone or in combination of two or more.

[Antioxidants]

The curable resin composition of the present invention may contain a radical scavenger such as to invalidate generated radicals or decompose the generated peroxide into a harmless substance in order to prevent oxidation, thereby avoiding generation. new An antioxidant such as a peroxide decomposing agent for free radicals. The antioxidant used in the present invention can prevent oxidative degradation of a resin containing a carboxyl group or an epoxy resin, and can suppress yellowing. Examples of the antioxidant include a phenol antioxidant, a phosphorus antioxidant, and an amine antioxidant. Among them, a phenolic antioxidant is particularly preferred. The antioxidant may be used singly or in combination of two or more.

[Coloring agent other than black colorant]

Further, one or more kinds of coloring agents other than the black coloring agent may be added as needed. As the other coloring agent, any of a pigment, a dye, and a coloring matter can be used. For example, a blue colorant, a red colorant, a purple colorant, a yellow colorant, a green colorant, a white colorant, an orange colorant, a brown colorant can be used. Particularly preferred are at least one of a blue colorant and a red colorant, and both may be used.

The blue coloring agent is a compound in which a pigment such as a phthalocyanine or a quinone is classified into a pigment (Pigment), a dye is classified as a solvent (Solvent), and the like, and specifically, The color index number.

Pigment systems can be used: Pigment Blue 15, Pigment Blue 15:1, Pigment Blue 15:2, Pigment Blue 15:3, Pigment Blue 15:4, Pigment Blue 15:6, Pigment Blue 16, Pigment Blue 60; Solvent Blue 35, Solvent Blue 63, Solvent Blue 68, Solvent Blue 70, Solvent Blue 83, Solvent Blue 87, Solvent Blue 94, Solvent Blue 97, Solvent Blue 122, Solvent Blue 136, Solvent Blue 67, Solvent Blue 70; In addition to the above, a metal-substituted or unsubstituted phthalocyanine compound can also be used.

The red coloring agent is a monoazo type, a bisazo type, an azo lake type, a benzimidazolone type, an anthracene type, a diketopyrrolopyrrole type, a condensed azo type, an anthraquinone type, a quinone type. The ketone system or the like is specifically a color index number as described below.

Monoazo system: Pigment Red 1,2,3,4,5,6,8,9,12,14,15,16,17,21,22,23,31,32,112,114,146,147 ,151,170,184,187,188,193,210,245,253,258,266,267,268,269; bisazo system: Pigment Red 37,38,41; monoazo lake system: Pigment Red 48:1,48:2,48:3,48:4,49:1,49:2,50:1,52:1,52:2,53:1,53:2,57:1,58 :4,63:1,63:2,64:1,68

Benzimidazolone series: Pigment Red 171, Pigment Red 175, Pigment Red 176, Pigment Red 185, Pigment Red 208; lanthanide: Solvent Red 135, Solvent Red 179, Pigment Red 123, Pigment Red 149, Pigment Red 166, Pigment Red 178, Pigment Red 179, Pigment Red 190, Pigment Red 194, Pigment Red 224; Diketopyrrolopyrrole: Pigment Red 254, Pigment Red 255, Pigment Red 264, Pigment Red 270, Pigment Red 272; condensed azo system: Pigment Red 220, Pigment Red 144, Pigment Red 166, Pigment Red 214, Pigment Red 220, Pigment Red 221, Pigment Red 242; Line: Pigment Red 168, Pigment Red 177, Pigment Red 216, Solvent Red 149, Solvent Red 150, Solvent Red 52, Solvent Red 207; Quinone®: Pigment Red 122, Pigment Red 202, Pigment Red 206, Pigment Red 207 , Pigment Red 209.

A purple coloring agent, specifically, a Pigment Violet 19, 23, 29, 32, 36, 37, 38, 42; Solvent Violet 13, 36; CIPigment brown 25; CIPigment black 1, CIPigment black 7 , Pigment Violet 37 (bisoxazine) and the like.

The yellow coloring agent is a monoazo type, a bisazo type, a condensed azo type, a benzimidazolone type, an isoindolinone type, an anthraquinone type, etc., and specifically, the following coloring agent is mentioned. . Monoazo system: Pigment Yellow 1,2,3,4,5,6,9,10,12,61,62,62:1,65,73,74,75,97,100,104,105,111 , 116, 167, 168, 169, 182, 183; bisazo system: Pigment Yellow 12, 13, 14, 16, 17, 55, 63, 81, 83, 87, 126, 127, 152, 170, 172, 174,176,188,198; Condensed azo system: Pigment Yellow 93, Pigment Yellow 94, Pigment Yellow 95, Pigment Yellow 128, Pigment Yellow 155, Pigment Yellow 166, Pigment Yellow 180; benzimidazole ketone series: Pigment Yellow 120, Pigment Yellow 151, Pigment Yellow 154 , Pigment Yellow 156, Pigment Yellow 175, Pigment Yellow 181; isoindolinone series: Pigment Yellow 110, Pigment Yellow 109, Pigment Yellow 139, Pigment Yellow 179, Pigment Yellow 185; lanthanide: Solvent Yellow 163, Pigment Yellow 24, Pigment Yellow 108, Pigment Yellow 193, Pigment Yellow 147, Pigment Yellow 199, Pigment Yellow 202.

The green coloring agent is a phthalocyanine system or a lanthanide system. Specifically, Pigment Green 7, Pigment Green 36, Solvent Green 3, Solvent Green 5, Solvent Green 20, Solvent Green 28, or the like can be used. In addition to the above, a metal-substituted or unsubstituted phthalocyanine compound can also be used.

Orange coloring agent, specifically, can be cited as: CI color orange 1, CI color orange 5, CI color orange 13, CI color orange 14, CI color orange 16, CI color orange 17, CI Color orange 24, CI color orange 34, CI color orange 36, CI color orange 38, CI color orange 40, CI color orange 43, CI color orange 46, CI color orange 49, CI color Orange 51, CI color orange 61, CI color orange 63, CI color orange 64, CI color orange 71, CI color orange 73 and so on.

The brown coloring agent, specifically, C.I. color brown 23, C.I. color brown 25, and the like.

Examples of the white coloring agent include zinc oxide represented by CI color white 4, titanium oxide represented by CI color white 6, and zinc sulfide represented by CI color white 7, but the viewpoint of coloring power and non-toxicity In particular, the titanium oxide is, for example, TR-600, TR-700, TR-750, TR-840, Ishihara Sho. R-550, R-580, R-630, manufactured by Fuji Titanium Industrial Co., Ltd. R-820, CR-50, CR-60, CR-90, rutile type titanium oxide such as KR-270, KR-310, and KR-380 manufactured by Titan Industrial Co., Ltd., TA-100, TA-made by Fuji Titanium Industrial Co., Ltd. 200, TA-300, TA-500, A100, A220 manufactured by Ishihara Sangyo Co., Ltd., anatase-type titanium oxide such as KA-15, KA-20, KA-35, and KA-90 manufactured by Titan Industrial Co., Ltd.

[Organic solvents]

Further, the thermosetting resin composition of the present invention can be used as a diluent for the dilution of the composition or the viscosity adjustment applied to the substrate or the carrier film.

Examples of such an organic solvent include ketones, aromatic hydrocarbons, glycol ethers, glycol ether acetates, esters, alcohols, aliphatic hydrocarbons, and petroleum solvents. More specifically, ketones such as methyl ethyl ketone and cyclohexanone; aromatic hydrocarbons such as toluene, xylene, and tetramethylbenzene; 赛路苏, methyl 赛苏苏, 丁Kesailusu, carbitol, methyl carbitol, butyl carbitol, propylene glycol monomethyl ether, dipropylene glycol monomethyl ether, dipropyl Glycol ethers such as diol diethyl ether and triethylene glycol monoethyl ether; ethyl acetate, butyl acetate, dipropylene glycol methyl ether acetate, propylene glycol methyl ether acetate, propylene glycol ethyl Esters such as ether acetate, propylene glycol butyl ether acetate; alcohols such as ethanol, propanol, ethylene glycol, propylene glycol; aliphatic hydrocarbons such as octane and decane; petroleum ether, naphtha, A petroleum solvent such as hydrogenated naphtha or solvent naphtha. These organic solvents may be used singly or in combination of two or more. The blending amount of the organic solvent is not particularly limited and may be appropriately added as needed.

The thermosetting resin composition of the present invention can be adjusted, for example, to a viscosity suitable for a coating method by using the above organic solvent, and by a dip coating method, a shower coating method, a roll coating method, or a bar coating method. A method such as a screen printing method or a curtain coating method is applied to a substrate, and the organic solvent contained in the composition is volatilized and dried (precure) at a temperature of about 50 to 300 ° C to form no Viscous coating film.

[wet dispersant]

The thermosetting resin composition of the present invention may contain a wetting dispersant in order to adjust the filling property of the minute concave portion of the composition, the surface smoothness of the cured film, and the defoaming property or surface tension of the composition. Examples of the commercially available product include wet dispersants BYK-110, BYK-111, and BYK-183 manufactured by BYK-Chemie GMBH. The wetting dispersing agent may be used alone or in combination of two or more. The blending amount of the wetting dispersant is preferably 0.01 to 5 parts by mass, more preferably 1 to 5 parts by mass, per 100 parts by mass of the total composition (solid content).

[Leveling agent]

The leveling agent may, for example, be a polyacrylate polymer, a polyether modified dimethyl polyoxyalkylene copolymer, a polyester modified dimethyl polyoxyalkylene copolymer, or a polyether modified methyl group. An alkyl polyoxyalkylene copolymer, an aralkyl modified methyl alkyl polyoxyalkylene copolymer, a polyether modified methyl alkyl polyoxyalkylene copolymer, and the like. The leveling agent may be used alone or in combination of two or more. The blending amount of the leveling agent is preferably 0.01 to 5 parts by mass, more preferably 1 to 5 parts by mass, per 100 parts by mass of the total of the (a) carboxyl group-containing resin and (b) epoxy resin.

[antifoaming agent]

A specific example of the antifoaming agent is commercially available as a defoaming agent composed of a non-polyoxygenated foaming polymer solution, and BYK (registered trademark)-054 manufactured by BYK-Chemie‧JAPAN Co., Ltd. , -055, -057, -1790, etc., as a deuterium-based antifoaming agent, BYK (registered trademark) -063, -065, -066N, -067A, which are manufactured by BYK-Chemie‧JAPAN Co., Ltd. -077, and dimethyl phthalate SH200 series manufactured by Dow Corning Toray Silicon Co., Ltd., etc.

[substrate]

Examples of the substrate used in the present invention include a resin film such as a polyimide film or a PET film, a glass substrate, a ceramic substrate, a metal substrate, and a wafer plate. Among them, a polyimide film or a PET film can be preferably used. A resin film or a glass substrate such as a film. The material and shape of the substrate are selected depending on the intended use or performance of the molded article, and two or more materials and shapes may be used alone or in combination. From the viewpoint of adhesion, a glass substrate is more preferable.

[manufacturing / mixing method]

The thermosetting resin composition of the present invention can be produced by uniformly mixing the above-mentioned essential components and other additive components used as needed. As the mixing method, a well-known method can be used, and it is not specifically limited. It can be a method of mixing without using a disperser, or a method of mechanically mixing by various dispersers such as a kneader, a roll, an attritor, or a bead mill.

In a particularly preferred method, the insulating filler, the solvent, and the dispersing agent are blended in advance, and the dispersion liquid dispersed by a disperser such as a rolling mill is mixed with another curable resin component, and the roller is reused as needed. a method in which the rolling mill is dispersed, or a part of the resin component, the insulating filler, the solvent, and the dispersing agent are blended in advance, and the dispersion liquid dispersed by a disperser such as a rolling mill is mixed with another curable resin component, and A method obtained by dispersing a roll mill again in response to the need.

In addition, in the case of adding a coloring agent, it is preferable to add or mix in a water or an organic solvent, and to dissolve or finely disperse in a mixed liquid in which a powder such as a coloring agent is dispersed. A liquid made up of a toner dispersant.

[Coating method]

After the thermosetting resin composition is prepared in a specific composition as described above, for example, the viscosity of the coating method can be adjusted with an organic solvent, and by, for example, a dip coating method, a shower coating method, a roll coating method, or the like. A method such as a bar coating method, a screen printing method, or a curtain coating method is applied to a substrate. Among them, a shower coating method, a roll coating method, a bar coating method, or a screen printing method are more suitable, and a screen printing method is particularly suitable.

[Examples]

Hereinafter, the present invention will be specifically described by way of examples, but the present invention is not limited to the examples. In addition, unless otherwise indicated, "part" means a mass part, and "%" means a mass %.

(Examples 1 to 9 and Comparative Examples 1 to 3)

The components shown in the following Table 1 were blended in the ratio (parts by mass) shown in Table 1, and the mixture was preliminarily mixed by a stirrer, and then kneaded by a 3-roll mill to prepare a thermosetting resin composition. Paste.

*6 Nipsil L300, Nippon Silica Industries, Inc., average particle size 2.2μm

*7 SG-95, manufactured by Nippon Talc, containing magnesium citrate, average particle size (D50): 2.5 μm

*8 TNK 110 Dyhard, Ningxia Shizuishan National Chemical (Group) Co., Ltd., dicyandiamide

*9 BYK-183, BYK-ChemieGmbH, high molecular weight block copolymer with pigment affinity group

*10 BYK-110, BYK-ChemieGmbH, copolymer containing acid groups

*11 Diethylene glycol monoethyl ether acetate manufactured by DEAC, Polynt UK Ltd.

*12 BYK-354, BYK-ChemieGmbH, polyacrylate leveling agent

*13 Silquest A-187 Momentive Performance Materials, organic decane

*14 Cromophtal Violet B, made by BASF JAPAN, purple colorant (Pigment Violet 37)

*15 OSTAPLAST YELLOW AGR, Synthesia, a, s, 蒽醌, yellow colorant

*16 Irgazin DPP Red Ultra Opaque, made by BASF JAPAN, red colorant

*17 R-KB-6, rutile-type titanium oxide prepared by Bayer AG and surface-treated with alumina

(Evaluation of the production of glass substrates)

The pastes of the thermosetting resin compositions obtained in the above Examples 1 to 9 and Comparative Examples 1 to 3 were each screen-printed using a 420 mesh screen to dry the film thickness of the cured film. 6 μm was applied to a glass substrate (soda lime glass manufactured by Central Glass Co., Ltd., thickness: 0.7 mm), and the coated glass substrate was placed in an oven (DH-62, manufactured by Yamato Scientific Co., Ltd.), and baked at 150 ° C. After 30 minutes, an evaluation glass substrate on which a hardened film of 6 μm was formed was produced.

The glass substrate on which the cured film of each thermosetting resin composition was formed was evaluated by the following method with respect to various characteristics as follows.

<Light shielding (OD value)>

The film side of the glass substrate was placed on a measuring instrument and attached to a transmission densitometer (manufactured by SAKATA INX ENG, model: X-Rite 361T, light source wavelength: 400 to 800 nm), and the OD value was evaluated as follows.

○: OD value exceeds 4

△: The OD value is 3 or more and 4 or less.

×: The OD value is less than 3

<Hot water resistance (hot water test)>

After the glass substrate was immersed in boiling water at 100 ° C for 60 minutes, water on the surface was taken out and removed, and water immersion or precipitation of the film was visually confirmed. Then, a transparent adhesive tape (manufactured by NICHIBAN Co., Ltd., horizontal width: 18 mm) was completely attached to the film side of the evaluation glass substrate, and one end of the tape was directly peeled off while maintaining a right angle to the glass substrate, and the film was visually evaluated as follows.

○: No change was confirmed.

△: A slight change was confirmed.

×: The immersion of water or the peeling of the film was confirmed.

<High temperature crack resistance>

The glass substrate was placed in a DENG YNG high-temperature oven (manufactured by Dengying Instruments Co., Ltd., model: DH-400), and heated at 280 ° C for 1 hour using an electron microscope (50 times, manufactured by OLYMPUS, model: MEASURING) MICROSCOPE STM-MJS2), the film surface of the glass substrate was evaluated in the following manner.

○: no crack

△: crack occurrence rate exceeds 0, less than 10%

×: The crack occurrence rate is 10% or more

<High temperature insulation resistance>

The glass substrate was baked at 280 ° C for 60 minutes in an oven, and a resistance meter (manufactured by Agilent Technologes, high resistance meter 4339B, component test fixture (component) was used to make the distance between the positive electrode and the negative electrode 0.5 cm. The positive electrode and the negative electrode of the test fixture) 16339A) were sandwiched between the film of the glass substrate, and the electric resistance of the film was measured under the conditions of a voltage of 500 V and a time of 60 seconds, and the electric resistance of the film was evaluated as follows.

○: Resistance exceeds 10 ¹⁰ Ω

△: The electric resistance is 10 ⁸ or more and 10 ¹⁰ Ω or less.

×: The resistance is less than 10 ⁸ Ω

<surface flatness>

Using a surface roughness meter (manufactured by Kosaka Laboratory, model: SE3500), measuring length: 2.5 mm, longitudinal magnification: 1000, horizontal magnification: 100, cutoff: 0.8 mm, speed: 0.5 mm/s The thickness of the surface of the film (maximum height of the peak, RmaxD) was measured 3 times under conditions, and evaluated as follows.

○: RmaxD is less than 1.5μm

△: RmaxD is 1.5 or more and less than 2 μm

×: RmaxD is 2 μm or more

<Pencil hardness test>

According to JIS K5400 (1990 version), a pencil of 4B to 9H which has been flattened at the front end of the refill is pressed with a pencil hardness tester at a temperature of about 45° (manufactured by Toyo Seiki Co., Ltd., model: C221A), and recorded. The hardness of the pencil which does not peel off the film is produced.

<sulfur resistance>

The glass substrate was immersed in a 10 vol% sulfuric acid aqueous solution at 25 ° C for 30 minutes, washed with water, and then water was removed, and water immersion or film dissolution was visually observed. Then, a transparent adhesive tape (manufactured by NICHIBAN Co., Ltd., horizontal width: 18 mm) was completely attached to the film side of the evaluation glass substrate, and one end of the tape was directly peeled off while maintaining a right angle to the glass substrate, and the film was visually evaluated as follows.

○: No change was confirmed.

△: A slight change was confirmed.

×: The immersion of water or the peeling of the film was confirmed.

<hydrochloric acid resistance>

The glass substrate was immersed in a 10 vol% hydrochloric acid aqueous solution at 25 ° C for 30 minutes, washed with water, and then the water was removed, and the water immersion was visually confirmed. Into or dissolved in the film. Then, a transparent adhesive tape (manufactured by NICHIBAN Co., Ltd., horizontal width: 18 mm) was completely attached to the film side of the evaluation glass substrate, and one end of the tape was directly peeled off while maintaining a right angle to the glass substrate, and the film was visually evaluated as follows.

○: No change was confirmed.

△: A slight change was confirmed.

×: The immersion of water or the peeling of the film was confirmed.

<Alkaline resistance>

The glass substrate was immersed in a 10 vol% aqueous NaOH solution at 25° C. for 30 minutes, washed with water, and then water was removed to visually confirm the infiltration of water or the dissolution of the film. Then, a transparent adhesive tape (manufactured by NICHIBAN Co., Ltd., horizontal width: 18 mm) was completely attached to the film side of the evaluation glass substrate, and one end of the tape was directly peeled off while maintaining a right angle to the glass substrate, and the film was visually evaluated as follows.

○: No change was confirmed.

△: A slight change was confirmed.

×: The immersion of water or the peeling of the film was confirmed.

<Solvent resistance>

A small amount of ethanol (95 vol%), dipropylene glycol monomethyl ether (DPM) (100 vol%), and isopropyl alcohol (IPA) (100 vol%) were added to a lens paper made by Kimberly-Clark. The lens of the solvent is repeatedly wiped on the glass substrate for about 20 times, and then visually observed. The surface of the film.

○: No change was confirmed.

△: A slight change was confirmed.

×: The film was peeled off.

<Adhesiveness (checkerboard adhesion test method)>

According to JIS K5400, 100 pieces (10×10) of 1 mm checkerboard were made on the film of the sample, so that the transparent adhesive tape was completely attached to the checkerboard (manufactured by NICHIBAN, width: 18 mm), and one end of the tape was directly applied to the glass. The substrate was peeled off at a right angle, and the number of checkers remaining without being completely peeled off was investigated.

In Table 2 below, the number of remaining checkerboards is taken as a numerator, and the total number (100 pieces) of the checkerboard is used as a denominator to record the result.

○: The checkerboard is 100% residual.

△: The checkerboard remains 95% or more and does not reach 100%.

×: The checkerboard residue is less than 95%.

The results of the above various evaluation tests are shown in Table 2.

As shown in Table 2, in any of Examples 1 to 9 of the present embodiment, adhesion, surface flatness, and hardenability can be achieved at a high level and balance, and high-temperature insulation resistance and Solvent resistant. In particular, when the amount of the barium sulfate is a specific amount (30 to 70 parts by mass based on 100 parts by mass of the total of the carboxyl group-containing resin and the epoxy resin), the high-temperature insulation resistance becomes More good. On the other hand, Comparative Example 1 using a composition containing no carboxyl group-containing resin, Comparative Example 2 using a composition containing no barium sulfate, and a composition containing no epoxy resin In Comparative Example 3, any one of them could not achieve adhesion, surface flatness, and hardenability at a high level and balance, and could not have high-temperature insulation resistance and solvent resistance.

Claims (5)

A thermosetting resin composition comprising: (a) a carboxyl group-containing resin as a thermosetting component, (b) an epoxy resin, (c) a black colorant, and (d) a barium sulfate, two At least one selected from the group consisting of cerium oxide and talc. The thermosetting resin composition according to claim 1, further comprising (e) a coloring agent other than black. The thermosetting resin composition according to claim 1 or 2, further comprising a decane coupling agent. A cured product of the thermosetting resin composition according to any one of claims 1 to 3, which is formed on a substrate. A member for a display characterized by comprising the cured product according to claim 4.