WO2016002241A1 - エポキシ樹脂、硬化性樹脂組成物、硬化物、半導体封止材料、半導体装置、プレプリグ、回路基板、ビルドアップフィルム、ビルドアップ基板、繊維強化複合材料、及び繊維強化成形品 - Google Patents
エポキシ樹脂、硬化性樹脂組成物、硬化物、半導体封止材料、半導体装置、プレプリグ、回路基板、ビルドアップフィルム、ビルドアップ基板、繊維強化複合材料、及び繊維強化成形品 Download PDFInfo
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- WO2016002241A1 WO2016002241A1 PCT/JP2015/052135 JP2015052135W WO2016002241A1 WO 2016002241 A1 WO2016002241 A1 WO 2016002241A1 JP 2015052135 W JP2015052135 W JP 2015052135W WO 2016002241 A1 WO2016002241 A1 WO 2016002241A1
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- C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
- C08G59/02—Polycondensates containing more than one epoxy group per molecule
- C08G59/04—Polycondensates containing more than one epoxy group per molecule of polyhydroxy compounds with epihalohydrins or precursors thereof
- C08G59/06—Polycondensates containing more than one epoxy group per molecule of polyhydroxy compounds with epihalohydrins or precursors thereof of polyhydric phenols
- C08G59/08—Polycondensates containing more than one epoxy group per molecule of polyhydroxy compounds with epihalohydrins or precursors thereof of polyhydric phenols from phenol-aldehyde condensates
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- C08L63/04—Epoxynovolacs
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- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/03—Use of materials for the substrate
- H05K1/0313—Organic insulating material
- H05K1/032—Organic insulating material consisting of one material
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- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/03—Use of materials for the substrate
- H05K1/0313—Organic insulating material
- H05K1/0353—Organic insulating material consisting of two or more materials, e.g. two or more polymers, polymer + filler, + reinforcement
- H05K1/0366—Organic insulating material consisting of two or more materials, e.g. two or more polymers, polymer + filler, + reinforcement reinforced, e.g. by fibres, fabrics
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- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/02—Apparatus or processes for manufacturing printed circuits in which the conductive material is applied to the surface of the insulating support and is thereafter removed from such areas of the surface which are not intended for current conducting or shielding
- H05K3/022—Processes for manufacturing precursors of printed circuits, i.e. copper-clad substrates
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- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/10—Apparatus or processes for manufacturing printed circuits in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern
- H05K3/18—Apparatus or processes for manufacturing printed circuits in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern using precipitation techniques to apply the conductive material
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- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/46—Manufacturing multilayer circuits
- H05K3/4644—Manufacturing multilayer circuits by building the multilayer layer by layer, i.e. build-up multilayer circuits
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- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/46—Manufacturing multilayer circuits
- H05K3/4644—Manufacturing multilayer circuits by building the multilayer layer by layer, i.e. build-up multilayer circuits
- H05K3/4673—Application methods or materials of intermediate insulating layers not specially adapted to any one of the previous methods of adding a circuit layer
- H05K3/4676—Single layer compositions
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- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W74/00—Encapsulations, e.g. protective coatings
- H10W74/01—Manufacture or treatment
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- H10W74/00—Encapsulations, e.g. protective coatings
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- C08J2363/00—Characterised by the use of epoxy resins; Derivatives of epoxy resins
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- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/09—Shape and layout
- H05K2201/09209—Shape and layout details of conductors
- H05K2201/095—Conductive through-holes or vias
- H05K2201/0959—Plated through-holes or plated blind vias filled with insulating material
Definitions
- the present invention provides an epoxy resin, a curable resin composition, and the above-described performance that have a small volume change after heat history in the obtained cured product, are excellent in low thermal expansion and low hygroscopicity, and can exhibit high heat resistance.
- the present invention relates to a cured product, a semiconductor sealing material, a semiconductor device, a prepreg, a circuit board, a buildup film, a buildup board, a fiber reinforced composite material, and a fiber reinforced molded product.
- the curable resin composition consisting of epoxy resin and phenolic hydroxyl group-containing resin is used for adhesives, molding materials, paints, photoresist materials, color developing materials, etc., and the resulting cured product has excellent heat resistance and moisture resistance. It is widely used in the electrical and electronic fields such as semiconductor sealing materials and printed wiring board insulating materials.
- a flip chip connection method in which a semiconductor device and a substrate are joined by solder balls is widely used.
- This flip-chip connection method is a so-called reflow semiconductor mounting method in which solder balls are arranged between a wiring board and a semiconductor and then the whole is heated and melt-bonded. Therefore, the wiring board is placed in a high heat environment during solder reflow. Be exposed.
- solder crack resistance reflow properties
- Patent Document 1 discloses a thermosetting resin composition mainly composed of a naphthol novolac type epoxy resin obtained by reacting naphthol, formaldehyde and epichlorohydrin, such as low thermal expansion. It is described as solving a technical problem.
- the naphthol novolak type epoxy resin is required in recent years although an improvement effect is recognized with respect to the heat resistance, thermal expansion coefficient, and moisture absorption rate of the obtained cured product as compared with a general phenol novolac type epoxy resin.
- the level of high heat resistance, low thermal expansion, and low moisture absorption rate could not be sufficiently satisfied.
- the volume of the cured product obtained from the resin largely changes due to the heat history, the connection failure of the printed wiring board is likely to occur.
- the problem to be solved by the present invention is an epoxy resin that cures less volume after heat history of the obtained cured product, is excellent in low thermal expansion and moisture absorption, and can exhibit high heat resistance, curing It is to provide a functional resin composition, a cured product having the above-mentioned performance, a semiconductor sealing material, a semiconductor device, a prepreg, a circuit board, a buildup film, a buildup board, a fiber reinforced composite material, and a fiber reinforced molded product. .
- cresol-naphthol co-condensed novolak epoxy resin (A), glycidyl ether compound (B) of naphthol, and xanthene compound (C) are essential.
- the epoxy resin containing the xanthene compound as a component and having an area ratio in the GPC measurement of 0.1% to 5.5% has little volume change after heat history in the cured product, and has low thermal expansion and low.
- the inventors have found that the material has excellent hygroscopicity and have completed the present invention.
- the present invention is selected from the group consisting of cresol-naphthol co-condensed novolak epoxy resin (A), naphthol glycidyl ether compound (B), and compounds represented by the following structural formulas (1) to (3).
- R 1 independently represents a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms, and m represents each independently Represents an integer of 1 to 6.
- the present invention further relates to a curable resin composition containing the epoxy resin and a curing agent as essential components.
- the present invention further relates to a cured product obtained by curing reaction of the curable resin composition.
- the present invention further relates to a semiconductor sealing material containing the curable resin composition and an inorganic filler.
- the present invention further relates to a semiconductor device obtained by heat-curing the semiconductor sealing material.
- the present invention further relates to a prepreg obtained by impregnating a reinforcing substrate with a solution obtained by diluting the curable resin composition in an organic solvent and semi-curing the resulting impregnated substrate.
- the present invention further relates to a circuit board obtained by obtaining a varnish obtained by diluting the curable resin composition in an organic solvent, and heating and press-molding a varnish shaped into a plate shape and a copper foil.
- the present invention further relates to a build-up film obtained by applying a solution obtained by diluting the curable resin composition in an organic solvent onto a base film and drying it.
- the present invention provides a build obtained by applying the build-up film to a circuit board on which a circuit is formed, forming irregularities on the circuit board obtained by heating and curing, and then subjecting the circuit board to plating.
- a build obtained by applying the build-up film to a circuit board on which a circuit is formed forming irregularities on the circuit board obtained by heating and curing, and then subjecting the circuit board to plating.
- the present invention further relates to a fiber-reinforced composite material containing the curable resin composition and reinforcing fibers.
- the present invention further relates to a fiber reinforced molded product obtained by curing the fiber reinforced composite material.
- the resulting cured product has little volume change after heat history, is excellent in low thermal expansion and low hygroscopicity, and can exhibit high heat resistance
- the curable resin composition A cured product, a semiconductor encapsulating material, a semiconductor device, a prepreg, a circuit board, a build-up film, a build-up board, a fiber reinforced composite material, and a fiber reinforced molded product having performance can be provided.
- 3 is a GPC chart of a phenol resin obtained in Synthesis Example 1.
- 5 is a GPC chart of an epoxy resin obtained in Synthesis Example 2.
- 3 is an FD-MS spectrum of the epoxy resin obtained in Synthesis Example 2.
- FIG. 3 is a 13 C-NMR spectrum of the epoxy resin obtained in Synthesis Example 2.
- FIG. 6 is a GPC chart of a phenol resin obtained in Synthesis Example 3.
- 10 is a GPC chart of an epoxy resin obtained in Synthesis Example 4.
- 10 is a GPC chart of a phenol resin obtained in Synthesis Example 5.
- 10 is a GPC chart of an epoxy resin obtained in Synthesis Example 6.
- 10 is a GPC chart of a phenol resin obtained in Synthesis Example 7.
- 10 is a GPC chart of an epoxy resin obtained in Synthesis Example 8.
- 10 is a GPC chart of a phenol resin obtained in Synthesis Example 9.
- 10 is a GPC chart of an epoxy resin obtained in Synthesis Example 10.
- 10 is a GPC chart of a phenol resin obtained in Synthesis Example 11.
- 10 is a GPC chart of an epoxy resin obtained in Synthesis Example 12.
- the epoxy resin of the present invention is selected from the group consisting of cresol-naphthol co-condensed novolak epoxy resin (A), glycidyl ether compound of naphthol (B), and compounds represented by the following structural formulas (1) to (3)
- the xanthene compound (C) is an essential component, and the content of the xanthene compound (C) is 0.1% to 5.5% in terms of area ratio in GPC measurement. .
- each R 1 independently represents a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms, and m is independently Represents an integer of 1 to 6.
- Examples of the hydrocarbon group having 1 to 4 carbon atoms represented by R 1 include a methyl group, an ethyl group, a propyl group, an isopropyl group, a butyl group, an isobutyl group, and a t-butyl group.
- Examples of the alkoxy group having 1 to 4 carbon atoms include methoxy group, ethoxy group, propyloxy group, isopropyloxy group, t-propyloxy group, butoxy group, isobutyloxy group, t-butyloxy group and the like.
- R 1 is preferably a hydrogen atom from the viewpoint of obtaining a cured product that is excellent in low thermal expansion and low hygroscopicity and exhibits high heat resistance.
- the epoxy resin of the present invention includes a cresol-naphthol co-condensed novolak type epoxy resin (A), a glycidyl ether compound of naphthol (B), and a group of compounds represented by the structural formulas (1) to (3).
- a mixture containing at least one xanthene compound (C) selected from the group consisting of one or more selected from the group of compounds represented by the structural formulas (1) to (3) By containing the xanthene compound (C) in an area ratio of 0.1% to 5.5% in the GPC measurement, there is little volume change after heat history in the cured product, and it has excellent low thermal expansion and low hygroscopicity and high heat resistance. It has a function that sex can be expressed.
- the content of the xanthene compound (C) is 0.5% to the area ratio in GPC measurement. It is preferably in the range of 5.0%, more preferably in the range of 0.8% to 4.5%.
- the content of the xanthene compound (C) in the epoxy resin is less than 0.1%, many polar groups are generated in the cured product, and the interaction between the xanthene compound skeleton and the molecular skeleton is insufficient. Therefore, the cured product has a large coefficient of thermal expansion and hygroscopicity, and a large volume change after heat history.
- the content exceeds 5.5% the crosslink density in the cured product is lowered, so that the cured product has a large coefficient of thermal expansion and the heat resistance is greatly lowered.
- the content of the naphthol glycidyl ether compound (B) in the epoxy resin of the present invention is such that there is little volume change after heat history, excellent low thermal expansion and low hygroscopicity, and high heat resistance. Since a cured product that can be obtained is obtained, the area ratio in GPC measurement is preferably in the range of 0.1% to 4.0%, and more preferably in the range of 0.5% to 3.5%.
- the epoxy resin of the present invention has a small volume change rate after heat history and a cured product that can exhibit high heat resistance and low hygroscopicity is obtained
- the total content with the xanthene compound (C) is preferably 1.0% to 8.0%, more preferably 2.0% to 7.0% in terms of area ratio in GPC measurement. .
- the epoxy equivalent of the epoxy resin of the present invention is preferably in the range of 220 g / eq to 275 g / eq since a cured product having high heat resistance and a small volume change rate after heat history can be obtained. More preferably, it is in the range of 220 g / eq to 270 g / eq.
- the various content rate in this invention is the abundance ratio of the peak area of each said structure with respect to the total peak area of the epoxy resin of this invention calculated by GPC measurement on the following conditions.
- the epoxy resin of the present invention contains cresol-naphthol co-condensed novolac type epoxy resin (A) as an essential component.
- the cresol-naphthol co-condensed novolak epoxy resin (A) is obtained by bonding a glycidyl ether compound of cresol and a glycidyl ether compound of naphthol through a divalent methylene group.
- Examples of the cresol-naphthol co-condensed novolac type epoxy resin include those represented by the following structural formula (4).
- G represents a glycidyl group
- R represents a hydrogen atom, a methyl group, an ethyl group, or an alkoxy group having 1 to 4 carbon atoms
- a and b represent each independently 1 represents a number of 1 to 20, and n represents an integer of 1 to 3.
- alkoxy group having 1 to 4 carbon atoms examples include methoxy group, ethoxy group, propyloxy group, isopropyloxy group, t-propyloxy group, butoxy group, isobutyloxy group, t-butyloxy group and the like.
- the obtained epoxy resin cured product has a high heat resistance and a low thermal expansion coefficient, and exhibits the property that the volume change after the heat history is small.
- R is preferably a hydrogen atom from the viewpoint that
- the epoxy resin of the present invention contains the glycidyl ether compound (B) of naphthol as an essential component.
- the glycidyl ether compound (B) what is represented by following Structural formula (5) is mentioned, for example.
- G is a glycidyl group
- R is independently a hydrogen atom, a methyl group, an ethyl group, or an alkoxy group having 1 to 4 carbon atoms
- n is an integer of 1 to 3 Indicates.
- R is a hydrogen atom because a change in volume after thermal history in a cured epoxy resin is reduced.
- the epoxy resin of the present invention described in detail above comprises a cresol-naphthol co-condensed novolak type epoxy resin (A), a glycidyl ether compound (B) of naphthol, and a xanthene compound (C), wherein the xanthene compound (C) is It can be produced by blending such that it is contained at a ratio of 0.1% to 5.5% by area ratio of GPC. However, the production by the following method is preferred from the viewpoints of excellent industrial productivity and excellent uniformity of the mixture.
- Such a method for producing an epoxy resin is obtained by subjecting cresol, a naphthol compound, and formaldehyde to a dehydration condensation reaction using an acid catalyst in a range of 60 to 100 ° C. under normal pressure and an inert gas atmosphere.
- a step of obtaining a phenol resin by giving a thermal history in the range of 101 to 119 ° C. under normal pressure and inert gas atmosphere (step 1), and a step of reacting the phenol resin obtained in the above step with epihalohydrin (step 2) ).
- cresol, a naphthol compound, and formaldehyde are subjected to a dehydration condensation reaction using an acid catalyst in the range of 60 to 100 ° C. under normal pressure and an inert gas atmosphere.
- a thermal history is given in the range of 101 to 119 ° C. under normal pressure and inert gas atmosphere.
- Step 1 by using an acid catalyst, a xanthene compound (C) is produced, and further, after a dehydration condensation reaction in the range of 60 to 100 ° C. under normal pressure and inert gas atmosphere, By giving a thermal history in the range of 101 to 119 ° C. under normal pressure and inert gas atmosphere, at the end of step 2, the xanthene compound (C) is 0.1% to 5.5% in terms of the area ratio of GPC.
- the xanthene compound (C) cannot be obtained at the end of step 2. Further, when the reaction is carried out under reduced pressure or in an oxidizing atmosphere, an amount of xanthene compound (C) exceeding the predetermined amount is formed at the end of step 2.
- the thermal history is preferably given for 1 minute to 12 hours so that the temperature of the system is 101 to 119 ° C. under normal pressure and inert gas atmosphere.
- Examples of the acid catalyst used here include inorganic acids such as hydrochloric acid, sulfuric acid and phosphoric acid, organic acids such as methanesulfonic acid, p-toluenesulfonic acid and oxalic acid, boron trifluoride and anhydrous aluminum chloride. And Lewis acids such as zinc chloride.
- the amount used is preferably in the range of 0.001 to 2.0 times the molar amount of the total number of phenolic hydroxyl groups of the raw material components cresol and naphthol compound.
- the inert gas used here is not limited as long as it is an inert gas with respect to the chemical reaction or the compound, but it is preferable to use nitrogen or argon from the viewpoint of production cost.
- examples of the organic solvent used for the reaction include methyl cellosolve, isopropyl alcohol, ethyl cellosolve, toluene, xylene, and methyl isobutyl ketone.
- the amount of the organic solvent used in the present invention is preferably in the range of 10 to 300 parts by mass per 100 parts by mass of the total mass of the raw material components cresol and naphthol compound, from the viewpoint that the resulting resin has a low viscosity.
- cresol in the manufacturing method of an epoxy resin, cresol, a naphthol compound, and formaldehyde are used as a raw material component as mentioned above.
- examples of the cresol used in the production method include o-cresol, m-cresol, and p-cresol. Of these, o-cresol and p-cresol are preferred from the viewpoint of easy control of the molecular weight.
- Naphthol compound used in the production method includes ⁇ -naphthol, ⁇ -naphthol, ⁇ -naphthol, ⁇ -naphthol, an alkyl group such as a methyl group, an ethyl group, a propyl group, and a t-butyl group, a methoxy group, And compounds in which an alkoxy group such as an ethoxy group is substituted by a nucleus.
- ⁇ -naphthol and ⁇ -naphthol are obtained from the viewpoint that the resulting cured epoxy resin has both high heat resistance and low coefficient of thermal expansion, and exhibits a property that volume change after thermal history is reduced. Is preferred.
- Formaldehyde Moreover, as the formaldehyde used for the said manufacturing method, the formalin solution which is the state of aqueous solution, and the paraformaldehyde which is a solid state may be sufficient.
- the proportions of the cresol and naphthol compound used in step 1 are such that the molar ratio (cresol / naphthol compound) is in the range of 0.1 to 2.0. This is preferable because it is easy to adjust.
- the charging ratio of formaldehyde is 0.6 to 2.0 times the molar amount of formaldehyde with respect to the total number of moles of cresol and naphthol compounds, in particular from the viewpoint of excellent low thermal expansion,
- the ratio is preferably 0.6 to 1.5 times.
- the neutralization treatment and the water washing treatment may be performed according to a conventional method.
- a basic substance such as sodium hydroxide or potassium hydroxide can be used as a neutralizing agent.
- the organic solvent is distilled off under reduced pressure heating to contain a cresol-naphthol co-condensed novolac type phenol resin, a naphthol compound, and a xanthene compound.
- the phenol resin which gives the epoxy resin containing the predetermined amount of the xanthene compound (C) is produced.
- Step 2 1 to 10 mol of epihalohydrin is added to 1 mol of cresol-naphthol co-condensed novolak type phenol resin obtained in step 1, and further, 0.1 mol per mol of cresol-naphthol co-condensed novolac type phenol resin.
- Examples thereof include a method of reacting at a temperature of 20 to 120 ° C. for 0.5 to 10 hours while adding or gradually adding 9 to 2.0 mol of a basic catalyst.
- the basic catalyst may be solid or an aqueous solution thereof. When an aqueous solution is used, it is continuously added and water and epihalohydrins are continuously distilled from the reaction mixture under reduced pressure or normal pressure. The solution may be taken out and further separated to remove water and the epihalohydrins are continuously returned to the reaction mixture.
- the epihalohydrin used for preparation is not particularly limited, and examples thereof include epichlorohydrin, epibromohydrin, ⁇ -methylepichlorohydrin, and the like. Among these, epichlorohydrin is preferable because it is easily available industrially.
- the basic catalyst include alkaline earth metal hydroxides, alkali metal carbonates, and alkali metal hydroxides.
- alkali metal hydroxides are preferable from the viewpoint of excellent catalytic activity of the epoxy resin synthesis reaction, and examples thereof include sodium hydroxide and potassium hydroxide.
- these basic catalysts may be used in the form of an aqueous solution of about 10% to 55% by weight or in the form of a solid.
- combination of an epoxy resin can be raised by using an organic solvent together.
- organic solvents examples include, but are not limited to, ketones such as acetone and methyl ethyl ketone, alcohols such as methanol, ethanol, 1-propyl alcohol, isopropyl alcohol, 1-butanol, secondary butanol, and tertiary butanol, methyl
- examples include cellosolves such as cellosolve and ethyl cellosolve, ethers such as tetrahydrofuran, 1,4-dioxane, 1,3-dioxane and diethoxyethane, and aprotic polar solvents such as acetonitrile, dimethyl sulfoxide and dimethylformamide.
- ketones such as acetone and methyl ethyl ketone
- alcohols such as methanol, ethanol, 1-propyl alcohol, isopropyl alcohol, 1-butanol, secondary butanol, and tertiary butanol, methyl
- reaction product of the epoxidation reaction described above is washed with water, and unreacted epihalohydrin and the organic solvent to be used in combination are distilled off by distillation under heating and reduced pressure. Further, in order to obtain an epoxy resin with less hydrolyzable halogen, the obtained epoxy resin is again dissolved in an organic solvent such as toluene, methyl isobutyl ketone, methyl ethyl ketone, and alkali metal hydroxide such as sodium hydroxide or potassium hydroxide. Further reaction can be carried out by adding an aqueous solution of the product.
- organic solvent such as toluene, methyl isobutyl ketone, methyl ethyl ketone, and alkali metal hydroxide such as sodium hydroxide or potassium hydroxide.
- phase transfer catalyst such as a quaternary ammonium salt or crown ether may be present for the purpose of improving the reaction rate.
- the amount used is preferably in the range of 0.1 to 3.0% by mass with respect to the epoxy resin used.
- ⁇ Curable resin composition One selected from the group consisting of the cresol-naphthol co-condensed novolak epoxy resin (A) of the present invention, the glycidyl ether compound (B) of naphthol, and the compounds represented by the structural formulas (1) to (3)
- the epoxy resin containing the above xanthene compound (C) as an essential component can be used in combination with a curing agent.
- a curable resin composition can be produced by blending a curing agent with the epoxy resin.
- curing agent examples include various known curing agents such as amine compounds, amide compounds, acid anhydride compounds, phenol compounds, and the like.
- examples of the amine compound include diaminodiphenylmethane, diethylenetriamine, triethylenetetramine, diaminodiphenylsulfone, isophoronediamine, imidazole, BF 3 -amine complex, and guanidine derivative.
- examples of the amide compound include dicyandiamide. And a polyamide resin synthesized from a dimer of linolenic acid and ethylenediamine.
- Acid anhydride compounds include phthalic anhydride, trimellitic anhydride, pyromellitic anhydride, maleic anhydride, tetrahydrophthalic anhydride, methyltetrahydrophthalic anhydride, methyl nadic anhydride, hexahydrophthalic anhydride, methylhexahydro And phthalic anhydride.
- Phenol compounds include phenol novolac resin, cresol novolac resin, aromatic hydrocarbon formaldehyde resin-modified phenol resin, dicyclopentadiene phenol addition resin, phenol aralkyl resin (Zylok resin), naphthol aralkyl resin, triphenylol methane resin, Tetraphenylolethane resin, naphthol novolak resin, naphthol-phenol co-condensed novolak resin, naphthol-cresol co-condensed novolak resin, biphenyl-modified phenol resin (polyphenolic hydroxyl group-containing compound in which phenol nucleus is linked by bismethylene group), biphenyl Modified naphthol resin (polyvalent naphthol compound in which phenol nucleus is linked by bismethylene group), aminotriazine modified phenol resin (melamine, benzo Polyhydric phenolic hydroxyl group-containing compounds in which phenol nuclei are linked with anamin, etc.
- the curable resin composition may be used in combination with other thermosetting resins in addition to the epoxy resin described in detail above.
- thermosetting resins examples include cyanate ester resins, resins having a benzoxazine structure, maleimide compounds, active ester resins, vinyl benzyl compounds, acrylic compounds, and copolymers of styrene and maleic anhydride.
- the amount used is not particularly limited as long as the effect of the present invention is not impaired, but it is in the range of 1 to 50 parts by mass in 100 parts by mass of the thermosetting resin composition. It is preferable that
- cyanate ester resin examples include bisphenol A type cyanate ester resin, bisphenol F type cyanate ester resin, bisphenol E type cyanate ester resin, bisphenol S type cyanate ester resin, bisphenol sulfide type cyanate ester resin, and phenylene ether type cyanate ester resin.
- cyanate ester resins bisphenol A-type cyanate ester resins, bisphenol F-type cyanate ester resins, bisphenol E-type cyanate ester resins, and polyhydroxynaphthalene-type cyanate ester resins are particularly preferred in that a cured product having excellent heat resistance can be obtained.
- a naphthylene ether type cyanate ester resin or a novolak type cyanate ester resin is preferably used, and a dicyclopentadiene-phenol addition reaction type cyanate ester resin is preferred in that a cured product having excellent dielectric properties can be obtained.
- the resin having a benzoxazine structure is not particularly limited.
- a reaction product of bisphenol F, formalin, and aniline Fa type benzoxazine resin
- a reaction product of diaminodiphenylmethane, formalin, and phenol P- d-type benzoxazine resin
- reaction product of bisphenol A, formalin and aniline reaction product of dihydroxydiphenyl ether, formalin and aniline
- reaction product of diaminodiphenyl ether, formalin and phenol dicyclopentadiene-phenol addition resin and formalin Reaction product of phenol and aniline
- reaction product of phenolphthalein, formalin and aniline reaction product of diphenyl sulfide, formalin and aniline.
- maleimide compound examples include various compounds represented by any of the following structural formulas (i) to (iii).
- R is an m-valent organic group
- ⁇ and ⁇ are each a hydrogen atom, a halogen atom, an alkyl group, or an aryl group, and s is an integer of 1 or more.
- R is a hydrogen atom, an alkyl group, an aryl group, an aralkyl group, a halogen atom, a hydroxyl group or an alkoxy group, s is an integer of 1 to 3, and t is an average of 0 to 10 repeating units.
- R is a hydrogen atom, an alkyl group, an aryl group, an aralkyl group, a halogen atom, a hydroxyl group or an alkoxy group, s is an integer of 1 to 3, and t is an average of 0 to 10 repeating units.
- the active ester resin is not particularly limited, but generally an ester group having high reaction activity, such as phenol esters, thiophenol esters, N-hydroxyamine esters, and esters of heterocyclic hydroxy compounds, is contained in one molecule. A compound having two or more is preferably used.
- the active ester resin is preferably obtained by a condensation reaction between a carboxylic acid compound and / or a thiocarboxylic acid compound and a hydroxy compound and / or a thiol compound.
- an active ester resin obtained from a carboxylic acid compound or a halide thereof and a hydroxy compound is preferred, and an active ester resin obtained from a carboxylic acid compound or a halide thereof and a phenol compound and / or a naphthol compound is preferred. More preferred.
- the carboxylic acid compound include benzoic acid, acetic acid, succinic acid, maleic acid, itaconic acid, phthalic acid, isophthalic acid, terephthalic acid, pyromellitic acid, and the like, or a halide thereof.
- phenol compounds or naphthol compounds include hydroquinone, resorcin, bisphenol A, bisphenol F, bisphenol S, dihydroxydiphenyl ether, phenolphthalein, methylated bisphenol A, methylated bisphenol F, methylated bisphenol S, phenol, o-cresol, m -Cresol, p-cresol, catechol, ⁇ -naphthol, ⁇ -naphthol, 1,5-dihydroxynaphthalene, 1,6-dihydroxynaphthalene, 2,6-dihydroxynaphthalene, dihydroxybenzophenone, trihydroxybenzophenone, tetrahydroxybenzophenone, phloroglucin Benzenetriol, dicyclopentadiene-phenol addition resin, and the like.
- the active ester resin examples include an active ester resin containing a dicyclopentadiene-phenol addition structure, an active ester resin containing a naphthalene structure, an active ester resin that is an acetylated product of phenol novolac, and an activity that is a benzoylated product of phenol novolac.
- An ester resin or the like is preferable, and an active ester resin having a dicyclopentadiene-phenol addition structure and an active ester resin having a naphthalene structure are more preferable because they are excellent in improving peel strength.
- examples of the active ester resin containing a dicyclopentadiene-phenol addition structure include compounds represented by the following general formula (iv).
- R represents a phenyl group or a naphthyl group
- u represents 0 or 1
- n represents an average of 0.05 to 2.5 repeating units.
- R is preferably a naphthyl group
- u is preferably 0, and n is preferably 0.25 to 1.5.
- the curable resin composition of the present invention is cured only by the curable resin composition, but a curing accelerator may be used in combination.
- Curing accelerators include tertiary amine compounds such as imidazole and dimethylaminopyridine; phosphorus compounds such as triphenylphosphine; boron trifluoride amine complexes such as boron trifluoride and trifluoride monoethylamine complexes; thiodipropion Organic acid compounds such as acids; benzoxazine compounds such as thiodiphenol benzoxazine and sulfonyl benzoxazine; sulfonyl compounds and the like. These may be used alone or in combination of two or more.
- the addition amount of these catalysts is preferably in the range of 0.001 to 15 parts by mass per 100 parts by mass of the curable resin composition.
- a non-halogen flame retardant containing substantially no halogen atom may be blended.
- non-halogen flame retardant examples include a phosphorus flame retardant, a nitrogen flame retardant, a silicone flame retardant, an inorganic flame retardant, an organic metal salt flame retardant, and the like. It is not intended to be used alone, and a plurality of the same type of flame retardants may be used, or different types of flame retardants may be used in combination.
- the phosphorous flame retardant can be either inorganic or organic.
- the inorganic compounds include red phosphorus, monoammonium phosphate, diammonium phosphate, triammonium phosphate, ammonium phosphates such as ammonium polyphosphate, and inorganic nitrogen-containing phosphorus compounds such as phosphate amide. .
- the red phosphorus is preferably subjected to a surface treatment for the purpose of preventing hydrolysis and the like.
- the surface treatment method include (i) magnesium hydroxide, aluminum hydroxide, zinc hydroxide, water A method of coating with an inorganic compound such as titanium oxide, bismuth oxide, bismuth hydroxide, bismuth nitrate or a mixture thereof; (ii) an inorganic compound such as magnesium hydroxide, aluminum hydroxide, zinc hydroxide, titanium hydroxide; and A method of coating with a mixture of a thermosetting resin such as a phenol resin, (iii) thermosetting of a phenol resin or the like on a coating of an inorganic compound such as magnesium hydroxide, aluminum hydroxide, zinc hydroxide, or titanium hydroxide
- a method of double coating with a resin may be used.
- organic phosphorus compounds examples include 9,10-dihydro, as well as general-purpose organic phosphorus compounds such as phosphate ester compounds, phosphonic acid compounds, phosphinic acid compounds, phosphine oxide compounds, phosphorane compounds, and organic nitrogen-containing phosphorus compounds.
- the amount of these phosphorus-based flame retardants is appropriately selected depending on the type of phosphorus-based flame retardant, the other components of the curable resin composition, and the desired degree of flame retardancy.
- 100 parts by mass of curable resin composition containing all of flame retardant and other fillers and additives 0.1 to 2.0 parts by mass when red phosphorus is used as a non-halogen flame retardant
- an organophosphorus compound it is also preferably blended in the range of 0.1 to 10.0 parts by mass, and 0.5 to 6.0 parts by mass. It is more preferable to mix in the range.
- the phosphorus flame retardant when using the phosphorus flame retardant, may be used in combination with hydrotalcite, magnesium hydroxide, boron compound, zirconium oxide, black dye, calcium carbonate, zeolite, zinc molybdate, activated carbon, etc. Good.
- nitrogen flame retardant examples include triazine compounds, cyanuric acid compounds, isocyanuric acid compounds, phenothiazines, and the like, and triazine compounds, cyanuric acid compounds, and isocyanuric acid compounds are preferable.
- triazine compound examples include melamine, acetoguanamine, benzoguanamine, melon, melam, succinoguanamine, ethylene dimelamine, melamine polyphosphate, triguanamine, and the like, for example, (1) guanylmelamine sulfate, melem sulfate, melam sulfate (2) Cocondensates of phenols such as phenol, cresol, xylenol, butylphenol and nonylphenol with melamines such as melamine, benzoguanamine, acetoguanamine and formguanamine and formaldehyde, (3) (2) A mixture of a co-condensate and a phenol resin such as a phenol formaldehyde condensate, (4) those obtained by further modifying (2) and (3) above with paulownia oil, isomerized linseed oil or the like.
- cyanuric acid compound examples include cyanuric acid and melamine cyanurate.
- the compounding amount of the nitrogen-based flame retardant is appropriately selected depending on the type of the nitrogen-based flame retardant, the other components of the curable resin composition, and the desired degree of flame retardancy.
- it is preferably compounded in the range of 0.05 to 10 parts by mass, preferably 0.1 to 5 parts by mass. It is more preferable to mix in the range.
- a metal hydroxide, a molybdenum compound or the like may be used in combination.
- the silicone flame retardant is not particularly limited as long as it is an organic compound containing a silicon atom, and examples thereof include silicone oil, silicone rubber, and silicone resin.
- the amount of the silicone-based flame retardant is appropriately selected according to the type of the silicone-based flame retardant, the other components of the curable resin composition, and the desired degree of flame retardancy. It is preferable to add in the range of 0.05 to 20 parts by mass in 100 parts by mass of the curable resin composition containing all of the flame retardant and other fillers and additives.
- inorganic flame retardant examples include metal hydroxide, metal oxide, metal carbonate compound, metal powder, boron compound, and low melting point glass.
- metal hydroxide examples include aluminum hydroxide, magnesium hydroxide, dolomite, hydrotalcite, calcium hydroxide, barium hydroxide, and zirconium hydroxide.
- metal oxide examples include zinc molybdate, molybdenum trioxide, zinc stannate, tin oxide, aluminum oxide, iron oxide, titanium oxide, manganese oxide, zirconium oxide, zinc oxide, molybdenum oxide, cobalt oxide, bismuth oxide, Examples thereof include chromium oxide, nickel oxide, copper oxide, and tungsten oxide.
- metal carbonate compound examples include zinc carbonate, magnesium carbonate, calcium carbonate, barium carbonate, basic magnesium carbonate, aluminum carbonate, iron carbonate, cobalt carbonate, and titanium carbonate.
- metal powder examples include aluminum, iron, titanium, manganese, zinc, molybdenum, cobalt, bismuth, chromium, nickel, copper, tungsten, and tin.
- Examples of the boron compound include zinc borate, zinc metaborate, barium metaborate, boric acid, and borax.
- low-melting-point glass examples include Shipley (Bokusui Brown), hydrated glass SiO 2 —MgO—H 2 O, PbO—B 2 O 3 system, ZnO—P 2 O 5 —MgO system, and P 2 O 5. Glassy compounds such as —B 2 O 3 —PbO—MgO, P—Sn—O—F, PbO—V 2 O 5 —TeO 2 , Al 2 O 3 —H 2 O, and lead borosilicate Can be mentioned.
- the blending amount of the inorganic flame retardant is appropriately selected depending on the kind of the inorganic flame retardant, the other components of the curable resin composition, and the desired degree of flame retardancy.
- it is preferably compounded in the range of 0.05 to 20 parts by mass, and 0.5 to 15 parts by mass. It is more preferable to mix in the range of parts by mass.
- organic metal salt flame retardant examples include ferrocene, acetylacetonate metal complex, organic metal carbonyl compound, organic cobalt salt compound, organic sulfonic acid metal salt, metal atom and aromatic compound or heterocyclic compound. And the like.
- the amount of the organic metal salt flame retardant is appropriately selected depending on the type of the organic metal salt flame retardant, the other components of the curable resin composition, and the desired degree of flame retardancy.
- the curable resin composition of the present invention can contain an inorganic filler as necessary.
- the inorganic filler include fused silica, crystalline silica, alumina, silicon nitride, and aluminum hydroxide.
- fused silica When particularly increasing the blending amount of the inorganic filler, it is preferable to use fused silica.
- the fused silica can be used in either a crushed shape or a spherical shape. However, in order to increase the blending amount of the fused silica and suppress an increase in the melt viscosity of the molding material, it is preferable to mainly use a spherical shape.
- the filling rate is preferably high in consideration of flame retardancy, and is particularly preferably 20% by mass or more with respect to the total mass of the curable resin composition.
- electroconductive fillers such as silver powder and copper powder, can be used.
- the curable resin composition of the present invention may contain various compounding agents such as a silane coupling agent, a release agent, a pigment, and an emulsifier, if necessary.
- the curable resin composition of the present invention is a semiconductor encapsulant, a semiconductor device, a prepreg, and a printed circuit board because the obtained cured product is excellent in low thermal expansion and low hygroscopicity and can exhibit high heat resistance. It can be applied to build-up substrates, build-up films, fiber-reinforced composite materials, fiber-reinforced resin molded products, conductive pastes, and the like.
- the curable resin composition, the curing accelerator, and a compounding agent such as an inorganic filler are extruded as necessary.
- fused silica is usually used as the inorganic filler, but when used as a high thermal conductive semiconductor encapsulant for power transistors and power ICs, crystalline silica, alumina, nitridation having higher thermal conductivity than fused silica.
- High filling such as silicon, or fused silica, crystalline silica, alumina, silicon nitride, or the like may be used.
- the filling rate is preferably 30 to 95% by mass of inorganic filler per 100 parts by mass of the curable resin composition. Among them, flame retardancy, moisture resistance, solder crack resistance improvement, wire In order to reduce the expansion coefficient, it is more preferably 70 parts by mass or more, and further preferably 80 parts by mass or more. 2.
- the semiconductor sealing material is cast or molded using a transfer molding machine, an injection molding machine or the like, and further at 50 to 200 ° C. A method of heating for ⁇ 10 hours is mentioned.
- a curable resin composition blended with an organic solvent and varnished is used as a reinforcing substrate (paper, glass cloth, glass nonwoven fabric, aramid paper, aramid cloth). And a glass mat, a glass roving cloth, etc.), followed by heating at a heating temperature corresponding to the solvent type used, preferably 50 to 170 ° C.
- the mass ratio of the resin composition and the reinforcing substrate used at this time is not particularly limited, but it is usually preferable that the resin content in the prepreg is adjusted to 20 mass% to 60 mass%.
- organic solvent used here examples include methyl ethyl ketone, acetone, dimethylformamide, methyl isobutyl ketone, methoxy propanol, cyclohexanone, methyl cellosolve, ethyl diglycol acetate, propylene glycol monomethyl ether acetate, etc.
- a polar solvent having a boiling point of 160 ° C. or lower such as methyl ethyl ketone, acetone, dimethylformamide, etc.
- the non-volatile content is preferably 40% by mass to 80% by mass.
- the prepreg is laminated by a conventional method, and a copper foil is appropriately laminated at 170 to 300 ° C. under a pressure of 1 to 10 MPa. For example, a method of heating and pressing for 10 minutes to 3 hours can be mentioned.
- step 1 As a method for obtaining a build-up substrate from the curable resin composition of the present invention, a method through Steps 1 to 3 can be mentioned.
- step 1 first, the curable resin composition appropriately blended with rubber, filler, and the like is applied to a circuit board on which a circuit is formed using a spray coating method, a curtain coating method, or the like, and then cured.
- step 2 if necessary, after drilling a predetermined through-hole portion or the like on the circuit board coated with the curable resin composition, by treating with a roughening agent and washing the surface with hot water, Unevenness is formed on the substrate, and a metal such as copper is plated.
- step 3 the operations of steps 1 and 2 are sequentially repeated as desired to build up the resin insulating layer and the conductor layer having a predetermined circuit pattern alternately to form a build-up substrate.
- the through-hole portion is preferably formed after the outermost resin insulating layer is formed.
- the build-up board of the present invention is obtained by subjecting a copper foil with a resin obtained by semi-curing the resin composition on a copper foil to thermocompression bonding at 170 to 300 ° C. on a wiring board on which a circuit is formed. It is also possible to produce a build-up substrate by forming the chemical surface and omitting the plating process.
- Build-up film As a method for obtaining a build-up film from the curable resin composition of the present invention, for example, a curable resin composition is applied on a support film and then dried, and then a resin composition layer is formed on the support film. The method of forming is mentioned.
- the curable resin composition of the present invention is used for a build-up film, the film is softened under the lamination temperature condition (usually 70 ° C. to 140 ° C.) in the vacuum laminating method, and is applied to the circuit board simultaneously with the lamination of the circuit board. It is important to show fluidity (resin flow) in which existing via holes or through holes can be filled with resin, and it is preferable to blend the above-described components so as to exhibit such characteristics.
- the diameter of the through hole of the circuit board is usually 0.1 to 0.5 mm, and the depth is usually 0.1 to 1.2 mm, and it is preferable that the resin can be filled in this range.
- the composition is applied to the surface of the support film (Y), Further, there is a method in which the organic solvent is dried by heating or hot air blowing to form the layer (X) of the curable resin composition.
- organic solvent used herein examples include ketones such as acetone, methyl ethyl ketone, and cyclohexanone, acetates such as ethyl acetate, butyl acetate, cellosolve acetate, propylene glycol monomethyl ether acetate, and carbitol acetate, cellosolve, butyl carbitol, and the like.
- ketones such as acetone, methyl ethyl ketone, and cyclohexanone
- acetates such as ethyl acetate, butyl acetate, cellosolve acetate, propylene glycol monomethyl ether acetate, and carbitol acetate, cellosolve, butyl carbitol, and the like.
- Carbitols, aromatic hydrocarbons such as toluene and xylene, dimethylformamide, dimethylacetamide, N-methylpyrrolidone, etc. are preferably
- the thickness of the layer (X) of the resin composition to be formed usually needs to be equal to or greater than the thickness of the conductor layer. Since the thickness of the conductor layer of the circuit board is usually in the range of 5 to 70 ⁇ m, the thickness of the resin composition layer is preferably 10 to 100 ⁇ m.
- the layer (X) of the resin composition in the present invention may be protected by a protective film described later. By protecting with a protective film, it is possible to prevent dust and the like from being attached to the surface of the resin composition layer and scratches.
- the above-mentioned support film and protective film are made of polyolefin such as polyethylene, polypropylene and polyvinyl chloride, polyethylene terephthalate (hereinafter sometimes abbreviated as “PET”), polyester such as polyethylene naphthalate, polycarbonate, polyimide, and further. Examples thereof include metal foil such as pattern paper, copper foil, and aluminum foil.
- the support film and the protective film may be subjected to a release treatment in addition to the mud treatment and the corona treatment.
- the thickness of the support film is not particularly limited, but is usually 10 to 150 ⁇ m, and preferably 25 to 50 ⁇ m.
- the thickness of the protective film is preferably 1 to 40 ⁇ m.
- the support film (Y) described above is peeled off after being laminated on a circuit board or after forming an insulating layer by heat curing. If the support film (Y) is peeled after the curable resin composition layer constituting the build-up film is heat-cured, adhesion of dust and the like in the curing step can be prevented. In the case of peeling after curing, the support film is usually subjected to a release treatment in advance.
- a multilayer printed circuit board can be manufactured from the buildup film obtained as mentioned above.
- the layer (X) of the resin composition is protected by a protective film, after peeling off these layers, one side or both sides of the circuit board so that the layer (X) of the resin composition is in direct contact with the circuit board
- lamination is performed by a vacuum laminating method.
- the laminating method may be a batch method or a continuous method using a roll.
- the build-up film and the circuit board may be heated (preheated) as necessary before lamination.
- the lamination conditions are preferably a pressure bonding temperature (lamination temperature) of 70 to 140 ° C.
- Fiber Reinforced Composite Material As a method for obtaining a fiber reinforced composite material (a sheet-like intermediate material in which a resin is impregnated with a reinforced fiber) from the curable resin composition of the present invention, the components constituting the curable resin composition are uniformly distributed. There is a method in which a varnish is prepared by mixing, and then impregnated into a reinforced substrate made of reinforcing fibers, followed by a polymerization reaction.
- the curing temperature at the time of carrying out such a polymerization reaction is preferably in the temperature range of 50 to 250 ° C., in particular, after curing at 50 to 100 ° C. to obtain a tack-free cured product,
- the treatment is preferably performed at a temperature of 120 to 200 ° C.
- the reinforced fiber may be any of a twisted yarn, an untwisted yarn, or a non-twisted yarn, but the untwisted yarn and the untwisted yarn are preferable because both the formability and mechanical strength of the fiber-reinforced plastic member are compatible.
- the form of a reinforced fiber can use what the fiber direction arranged in one direction, and a textile fabric.
- the woven fabric can be freely selected from plain weaving, satin weaving, and the like according to the site and use. Specifically, since it is excellent in mechanical strength and durability, carbon fiber, glass fiber, aramid fiber, boron fiber, alumina fiber, silicon carbide fiber and the like can be mentioned, and two or more of these can be used in combination.
- carbon fiber is preferable from the viewpoint that the strength of the molded product is particularly good.
- the carbon fiber various types such as polyacrylonitrile-based, pitch-based, and rayon-based can be used. Among these, a polyacrylonitrile-based one that can easily obtain a high-strength carbon fiber is preferable.
- the amount of reinforcing fibers used when a reinforced varnish made of reinforcing fibers is impregnated into a fiber-reinforced composite material is such that the volume content of the reinforcing fibers in the fiber-reinforced composite material is 40% to 85%. It is preferable that the amount be in the range.
- Fiber reinforced resin molded article As a method of obtaining a fiber reinforced molded article (molded article obtained by curing a sheet-like member in which resin is impregnated into reinforced fibers) from the curable resin composition of the present invention, a fiber aggregate is laid on a mold, Using hand lay-up method, spray-up method, male type or female type, in which multiple varnishes are laminated, the base material made of reinforced fiber is piled up while impregnating the varnish, and the pressure acts on the molded product A vacuum bag method in which a flexible mold that can be covered is covered and hermetically sealed is vacuum (reduced pressure) molding, a varnish containing reinforced fibers in advance is formed into a sheet, SMC press method, fiber A prepreg in which reinforcing fibers are impregnated with the varnish is manufactured by an RTM method or the like in which the varnish is injected into a laminated mold in which the varnish is spread, and this is used as a large autoclave.
- the fiber reinforced resin molded product obtained above is a molded product having a reinforced fiber and a cured product of the curable resin composition.
- the amount of the reinforced fiber in the fiber reinforced molded product is: The range is preferably 40% by mass to 70% by mass, and particularly preferably 50% by mass to 70% by mass from the viewpoint of strength.
- Conductive paste examples of a method for obtaining a conductive paste from the curable resin composition of the present invention include a method of dispersing fine conductive particles in the curable resin composition.
- the conductive paste can be a paste resin composition for circuit connection or an anisotropic conductive adhesive depending on the type of fine conductive particles used.
- ⁇ GPC measurement conditions The measurement of GPC was performed under the following conditions.
- Measuring device “HLC-8220 GPC” manufactured by Tosoh Corporation Column: Guard column “HXL-L” manufactured by Tosoh Corporation + “TSK-GEL G2000HXL” manufactured by Tosoh Corporation + “TSK-GEL G2000HXL” manufactured by Tosoh Corporation + Tosoh Corporation “TSK-GEL G3000HXL” + “TSK-GEL G4000HXL” manufactured by Tosoh Corporation Detector: RI (differential refractometer)
- Data processing “GPC-8020 Model II version 4.10” manufactured by Tosoh Corporation Measurement conditions: Column temperature 40 ° C Developing solvent Tetrahydrofuran Flow rate 1.0 ml / min Standard: The following monodisperse polystyrene having a known molecular weight was used according to the measurement manual of “GPC-8020 model II version 4.10”.
- FD-MS spectrum was measured using a double-focusing mass spectrometer “AX505H (FD505H)” manufactured by JEOL Ltd.
- the temperature was raised to 110 ° C., and the mixture was stirred at normal pressure for 2 hours, neutralized with a 49% aqueous sodium hydroxide solution, and washed with water to remove salts. Thereafter, the temperature was raised to 160 ° C. over 3 hours, and the solvent and water remaining in the reaction system were removed under reduced pressure by heating to obtain a phenol resin.
- the obtained phenol resin had a softening point of 113 ° C. (B & R method) and a hydroxyl group equivalent of 165 g / eq.
- a GPC chart of the obtained phenol resin is shown in FIG. From FIG. 1, the area ratio in the GPC measurement of the naphthol monomer in the phenol resin was 3.4%, and the area ratio in the GPC measurement of the xanthene compound was 3.5%.
- Synthesis Example 11 Synthesis of Phenol Resin Synthesis Example except that the amount of ⁇ -naphthol was changed from 144 g (1.0 mol) to 0 g (0 mol) and the amount of o-cresol was changed to 281 g (2.6 mol). 1 to obtain a phenolic resin.
- the obtained phenol resin had a softening point of 110 ° C. (B & R method) and a hydroxyl group equivalent of 158 g / eq.
- a GPC chart of the resulting phenol resin (A-6) is shown in FIG. From FIG. 13, the area ratio in the GPC measurement of the naphthol monomer in the phenol resin was 1.2%, and the area ratio in the GPC measurement of the xanthene compound was 5.6%.
- the area ratio in the GPC measurement of the glycidyl ether compound (B) of naphthol in the epoxy resin (D-7) was 5.4%
- the area ratio in the GPC measurement of the xanthene compound (C) was 3.4%. It was.
- the resulting epoxy resin (D′-1) had a softening point of 122 ° C. (B & R method) and an epoxy equivalent of 239 g / eq. Although not shown, in the GPC measurement of the obtained epoxy resin, the peaks of the glycidyl ether compound (B) of naphthol and the xanthene compound (C) could not be confirmed.
- the resulting epoxy resin (D′-4) had a softening point of 62 ° C. (B & R method) and an epoxy equivalent of 261 g / eq.
- the glycidyl ether compound (B) of naphthol was 3.8% in the GPC measurement, and the area ratio in the GPC measurement of the xanthene compound (C) was 18.9%.
- D-1 Epoxy resin obtained in Synthesis Example 2 D-2: Epoxy resin obtained in Synthesis Example 4 D-3: Epoxy resin obtained in Synthesis Example 6 D-4: Synthesis Example 7 D-5: Epoxy resin obtained in Synthesis Example 10 D-6: Epoxy resin obtained in Synthesis Example 12 D-7: Epoxy resin obtained in Synthesis Example 13 D '-1: Epoxy resin obtained in Comparative Synthesis Example 2 ⁇ D'-2: Epoxy resin obtained in Comparative Synthesis Example 3 ⁇ D'-3: Epoxy resin obtained in Comparative Synthesis Example 4 ⁇ D'- 4: Epoxy resin obtained in Comparative Synthesis Example 5 D′-5: Epoxy resin obtained in Comparative Synthesis Example 6 E-1: Phenol resin TD-2090 manufactured by DIC Corporation Phenol novolac type phenol resin, hydroxyl group equivalent: 105 g / eq F-1: Curing accelerator 2-ethyl-4-methylimidazole
- ⁇ Laminate production conditions > Base material: Glass cloth “# 2116” (210 ⁇ 280 mm) manufactured by Nitto Boseki Co., Ltd. Number of plies: 6 Condition of prepreg: 160 ° C Curing conditions: 200 ° C., 40 kg / cm 2 for 1.5 hours, post-molding plate thickness: 0.8 mm
- ⁇ Heat resistance test> The laminate prepared above was cut into a cured product having a thickness of 0.8 mm and having a width of 5 mm and a length of 54 mm. Using this test piece 1 with a viscoelasticity measuring device (DMA: solid viscoelasticity measuring device “RSAII” manufactured by Rheometric Co., Ltd., rectangular tension method: frequency 1 Hz, heating rate 3 ° C./min) (The tan ⁇ change rate is the highest) was evaluated as the glass transition temperature.
- DMA solid viscoelasticity measuring device “RSAII” manufactured by Rheometric Co., Ltd., rectangular tension method: frequency 1 Hz, heating rate 3 ° C./min
- thermomechanical analyzer TMA: SS-6100 manufactured by Seiko Instruments Inc.
- the measurement on the following conditions was implemented twice per the same sample, and the average linear expansion coefficient in the temperature range of 40 degreeC to 60 degreeC in the 2nd measurement was evaluated as a thermal expansion coefficient.
- Measurement conditions Measurement weight: 88.8mN Temperature increase rate: 2 times at 10 ° C / min Measurement temperature range: -50 ° C to 300 ° C
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Abstract
Description
以下、本発明を詳細に説明する。
本発明のエポキシ樹脂は、クレゾール-ナフトール共縮ノボラック型エポキシ樹脂(A)と、ナフトールのグリシジルエーテル化合物(B)と、下記構造式(1)~(3)で表される化合物の群から選択される1種以上のキサンテン化合物(C)とを必須成分として含み、前記キサンテン化合物(C)の含有率がGPC測定における面積比率で0.1%~5.5%であることを特徴としている。
<GPC測定条件>
測定装置 :東ソー株式会社製「HLC-8220 GPC」、
カラム:東ソー株式会社製ガードカラム「HXL-L」
+東ソー株式会社製「TSK-GEL G2000HXL」
+東ソー株式会社製「TSK-GEL G2000HXL」
+東ソー株式会社製「TSK-GEL G3000HXL」
+東ソー株式会社製「TSK-GEL G4000HXL」
検出器: RI(示差屈折計)
データ処理:東ソー株式会社製「GPC-8020モデルIIバージョン4.10」
測定条件: カラム温度 40℃
展開溶媒 テトラヒドロフラン
流速 1.0ml/分
標準 : 前記「GPC-8020モデルIIバージョン4.10」の測定マニュアルに準拠して、分子量が既知の下記の単分散ポリスチレンを用いた。
(使用ポリスチレン)
東ソー株式会社製「A-500」
東ソー株式会社製「A-1000」
東ソー株式会社製「A-2500」
東ソー株式会社製「A-5000」
東ソー株式会社製「F-1」
東ソー株式会社製「F-2」
東ソー株式会社製「F-4」
東ソー株式会社製「F-10」
東ソー株式会社製「F-20」
東ソー株式会社製「F-40」
東ソー株式会社製「F-80」
東ソー株式会社製「F-128」
試料 : 樹脂固形分換算で1.0質量%のテトラヒドロフラン溶液をマイクロフィルターでろ過したもの(50μl)。
前記のように、本発明のエポキシ樹脂は、クレゾール-ナフトール共縮ノボラック型エポキシ樹脂(A)を必須成分として含んでいる。クレゾール-ナフトール共縮ノボラック型エポキシ樹脂(A)は、クレゾールのグリシジルエーテル化合物とナフトールのグリシジルエーテル化合物が2価のメチレン基を介して結合したものである。クレゾール-ナフトール共縮ノボラック型エポキシ樹脂としては、例えば、下記構造式(4)で表されるものが挙げられる。
また、前記のように、本発明のエポキシ樹脂は、ナフトールのグリシジルエーテル化合物(B)を必須成分として含んでいる。前記グリシジルエーテル化合物(B)としては、例えば、下記構造式(5)で表されるものが挙げられる。
以上詳述した本発明のエポキシ樹脂は、クレゾール-ナフトール共縮ノボラック型エポキシ樹脂(A)と、ナフトールのグリシジルエーテル化合物(B)と、キサンテン化合物(C)とを、前記キサンテン化合物(C)がGPCの面積比で0.1%~5.5%の割合で含まれるように配合することによって製造することができる。しかし、下記の方法により製造することが、工業的な生産性に優れると共に、混合物の均一性に優れる点から好ましい。
上記のように、工程1では、クレゾールと、ナフトール化合物と、ホルムアルデヒドとを、常圧、不活性ガス雰囲気下、60~100℃の範囲で、酸触媒を用いて脱水縮合反応を実施したのち、常圧、不活性ガス雰囲気下、101~119℃の範囲で熱履歴を与える。前記の条件でクレゾールと、ナフトール化合物と、ホルムアルデヒドとを反応させることにより、クレゾール-ナフトール共縮ノボラック型フェノール樹脂と、ナフトール化合物と、キサンテン化合物とを必須成分として含むフェノール樹脂を得ることができる。なお、常圧とは特別に減圧も加圧もしないときの圧力であり、通常、大気圧に等しい圧力を指す。
なお、エポキシ樹脂の製造方法では、前記のようにクレゾールとナフトール化合物とホルムアルデヒドを原料成分とする。前記製造方法に用いるクレゾールとしては、o-クレゾール、m-クレゾール、p-クレゾールが挙げられる。なお、前記の中でも、分子量を制御しやすい点からo-クレゾール、p-クレゾールが好ましい。
また、前記製造方法に用いるナフトール化合物としては、α-ナフトール、β-ナフトール、又はα-ナフトール、β-ナフトールにメチル基、エチル基、プロピル基、t-ブチル基等のアルキル基、メトキシ基、エトキシ基等のアルコキシ基が核置換した化合物等が挙げられる。なお、前記の中でも、得られるエポキシ樹脂の硬化物が高耐熱性と低熱膨張率を兼備し、熱履歴後の体積変化が小さくなるという性質を発現するといった観点から、α-ナフトール、β-ナフトールが好ましい。
また、前記製造方法に用いるホルムアルデヒドとしては、水溶液の状態であるホルマリン溶液でも、固形状態であるパラホルムアルデヒドでもよい。
工程2では、工程1で得られたクレゾール-ナフトール共縮ノボラック型フェノール樹脂1モルに対し、エピハロヒドリン1~10モルを添加し、更に、クレゾール-ナフトール共縮ノボラック型フェノール樹脂1モルに対し0.9~2.0モルの塩基性触媒を一括添加または徐々に添加しながら20~120℃の温度で0.5~10時間反応させる方法が挙げられる。この塩基性触媒は固形でもその水溶液を使用してもよく、水溶液を使用する場合は、連続的に添加すると共に、反応混合物中から減圧下、または常圧下、連続的に水及びエピハロヒドリン類を留出せしめ、更に分液して水は除去しエピハロヒドリン類は反応混合物中に連続的に戻す方法でもよい。
本発明のクレゾール-ナフトール共縮ノボラック型エポキシ樹脂(A)と、ナフトールのグリシジルエーテル化合物(B)と、前記構造式(1)~(3)で表される化合物の群から選択される1種以上のキサンテン化合物(C)とを必須成分として含むエポキシ樹脂は、硬化剤を併用できるものである。前記エポキシ樹脂に硬化剤を配合することで、硬化性樹脂組成物を作製することができる。
本発明の硬化性樹脂組成物は、得られる硬化物が低熱膨張性と低吸湿性に優れ、かつ高い耐熱性を発現させることができることから、半導体封止材料、半導体装置、プリプレグ、プリント回路基板、ビルドアップ基板、ビルドアップフィルム、繊維強化複合材料、繊維強化樹脂成形品、導電ペースト等に適用することができる。
本発明の硬化性樹脂組成物から半導体封止材料を得る方法としては、前記硬化性樹脂組成物、前記硬化促進剤、及び無機充填剤等の配合剤とを必要に応じて押出機、ニ-ダ、ロ-ル等を用いて均一になるまで充分に溶融混合する方法が挙げられる。その際、無機充填剤としては、通常、溶融シリカが用いられるが、パワートランジスタ、パワーIC用高熱伝導半導体封止材として用いる場合は、溶融シリカよりも熱伝導率の高い結晶シリカ,アルミナ,窒化ケイ素などの高充填化、または溶融シリカ、結晶性シリカ、アルミナ、窒化ケイ素などを用いるとよい。その充填率は硬化性樹脂組成物100質量部当たり、無機充填剤を30質量%~95質量%の範囲で用いることが好ましく、中でも、難燃性や耐湿性や耐半田クラック性の向上、線膨張係数の低下を図るためには、70質量部以上がより好ましく、80質量部以上であることがさらに好ましい。
2.半導体装置
本発明の硬化性樹脂組成物から半導体装置を得る方法としては、前記半導体封止材料を注型、或いはトランスファー成形機、射出成形機などを用いて成形し、さらに50~200℃で2~10時間の間、加熱する方法が挙げられる。
本発明の硬化性樹脂組成物からプリプレグを得る方法としては、有機溶剤を配合してワニス化した硬化性樹脂組成物を、補強基材(紙、ガラス布、ガラス不織布、アラミド紙、アラミド布、ガラスマット、ガラスロービング布など)に含浸したのち、用いた溶剤種に応じた加熱温度、好ましくは50~170℃で加熱することによって、得る方法が挙げられる。この時用いる樹脂組成物と補強基材の質量割合としては、特に限定されないが、通常、プリプレグ中の樹脂分が20質量%~60質量%となるように調製することが好ましい。
本発明の硬化性樹脂組成物からプリント回路基板を得る方法としては、前記プリプレグを、常法により積層し、適宜銅箔を重ねて、1~10MPaの加圧下に170~300℃で10分~3時間、加熱圧着させる方法が挙げられる。
本発明の硬化性樹脂組成物からビルドアップ基板を得る方法としては、工程1~3を経由する方法が挙げられる。工程1では、まず、ゴム、フィラーなどを適宜配合した前記硬化性樹脂組成物を、回路を形成した回路基板にスプレーコーティング法、カーテンコーティング法等を用いて塗布した後、硬化させる。工程2では、必要に応じて、硬化性樹脂組成物が塗布された回路基板に所定のスルーホール部等の穴あけを行った後、粗化剤により処理し、その表面を湯洗することによって、前記基板に凹凸を形成させ、銅などの金属をめっき処理する。工程3では、工程1~2の操作を所望に応じて順次繰り返し、樹脂絶縁層及び所定の回路パターンの導体層を交互にビルドアップしてビルドアップ基板を成形する。なお、前記工程において、スルーホール部の穴あけは、最外層の樹脂絶縁層の形成後に行うとよい。また、本発明のビルドアップ基板は、銅箔上で当該樹脂組成物を半硬化させた樹脂付き銅箔を、回路を形成した配線基板上に、170~300℃で加熱圧着することで、粗化面を形成、メッキ処理の工程を省き、ビルドアップ基板を作製することも可能である。
本発明の硬化性樹脂組成物からビルドアップフィルムを得る方法としては、例えば、支持フィルム上に硬化性樹脂組成物を塗布したのち、乾燥させて、支持フィルムの上に樹脂組成物層を形成する方法が挙げられる。本発明の硬化性樹脂組成物をビルドアップフィルムに用いる場合、該フィルムは、真空ラミネート法におけるラミネートの温度条件(通常70℃~140℃)で軟化し、回路基板のラミネートと同時に、回路基板に存在するビアホール或いはスルーホール内の樹脂充填が可能な流動性(樹脂流れ)を示すことが肝要であり、このような特性を発現するよう前記各成分を配合することが好ましい。
本発明の硬化性樹脂組成物から繊維強化複合材料(樹脂が強化繊維に含浸したシート状の中間材料)を得る方法としては、硬化性樹脂組成物を構成する各成分を均一に混合してワニスを調整し、次いでこれを強化繊維からなる強化基材に含浸した後、重合反応させることにより製造する方法が挙げられる。
本発明の硬化性樹脂組成物から繊維強化成形品(樹脂が強化繊維に含浸したシート状部材が硬化した成形品)を得る方法としては、型に繊維骨材を敷き、前記ワニスを多重積層してゆくハンドレイアップ法やスプレーアップ法、オス型・メス型のいずれかを使用し、強化繊維からなる基材にワニスを含浸させながら積み重ねて成形、圧力を成形物に作用させることのできるフレキシブルな型をかぶせ、気密シールしたものを真空(減圧)成型する真空バッグ法、あらかじめ強化繊維を含有するワニスをシート状にしたものを金型で圧縮成型するSMCプレス法、繊維を敷き詰めた合わせ型に前記ワニスを注入するRTM法などにより、強化繊維に前記ワニスを含浸させたプリプレグを製造し、これを大型のオートクレーブで焼き固める方法などが挙げられる。なお、前記で得られた繊維強化樹脂成形品は、強化繊維と硬化性樹脂組成物の硬化物とを有する成形品であり、具体的には、繊維強化成形品中の強化繊維の量は、40質量%~70質量%の範囲であることが好ましく、強度の点から50質量%~70質量%の範囲であることが特に好ましい。
本発明の硬化性樹脂組成物から導電ペーストを得る方法としては、例えば、微細導電性粒子を該硬化性樹脂組成物中に分散させる方法が挙げられる。前記導電ペーストは、用いる微細導電性粒子の種類によって、回路接続用ペースト樹脂組成物や異方性導電接着剤とすることができる。
GPCの測定は下記の条件で行った。
測定装置 :東ソー株式会社製「HLC-8220 GPC」、
カラム:東ソー株式会社製ガードカラム「HXL-L」
+東ソー株式会社製「TSK-GEL G2000HXL」
+東ソー株式会社製「TSK-GEL G2000HXL」
+東ソー株式会社製「TSK-GEL G3000HXL」
+東ソー株式会社製「TSK-GEL G4000HXL」
検出器: RI(示差屈折計)
データ処理:東ソー株式会社製「GPC-8020モデルIIバージョン4.10」
測定条件: カラム温度 40℃
展開溶媒 テトラヒドロフラン
流速 1.0ml/分
標準 : 前記「GPC-8020モデルIIバージョン4.10」の測定マニュアルに準拠して、分子量が既知の下記の単分散ポリスチレンを用いた。
(使用ポリスチレン)
東ソー株式会社製「A-500」
東ソー株式会社製「A-1000」
東ソー株式会社製「A-2500」
東ソー株式会社製「A-5000」
東ソー株式会社製「F-1」
東ソー株式会社製「F-2」
東ソー株式会社製「F-4」
東ソー株式会社製「F-10」
東ソー株式会社製「F-20」
東ソー株式会社製「F-40」
東ソー株式会社製「F-80」
東ソー株式会社製「F-128」
試料 : 樹脂固形分換算で1.0質量%のテトラヒドロフラン溶液をマイクロフィルターでろ過したもの(50μl)。
装置:日本電子株式会社製 AL-400、
測定モード:SGNNE(NOE消去の1H完全デカップリング法)、
溶媒:ジメチルスルホキシド、
パルス角度:45°パルス、
試料濃度 :30wt%、
積算回数 :1000回。
FD-MSスペクトルは、日本電子株式会社製の二重収束型質量分析装置「AX505H(FD505H)」を用いて測定した。
温度計、滴下ロート、冷却管、分留管、撹拌器を取り付けたフラスコに、窒素ガスパージを施しながらα-ナフトール144g(1.0モル)、β-ナフトール577g(4.0モル)、o-クレゾール270g(2.5モル)、パラトルエンスルホン酸5gを仕込み、室温から70℃まで45分で昇温しながら撹拌した。続いて、42W%ホルマリン水溶液420g(5.8モル)を1時間要して滴下した。滴下終了後、110℃まで昇温して常圧下で2時間撹拌し、49%水酸化ナトリウム水溶液で中和、水洗して塩を除去した。その後160℃まで3時間で昇温し、反応系内に残った溶剤と水分を加熱減圧下に除去しフェノール樹脂を得た。得られたフェノール樹脂の軟化点は113℃(B&R法)、水酸基当量は165g/eqであった。得られたフェノール樹脂のGPCチャートを図1に示す。図1より、フェノール樹脂におけるナフトールモノマーのGPC測定における面積比は3.4%であり、キサンテン化合物のGPC測定における面積比は3.5%であった。
次いで、温度計、冷却管、撹拌器を取り付けたフラスコに窒素ガスパージを施しながら合成例1で得られたフェノール樹脂165g(水酸基当量1.0g/eq)、エピクロルヒドリン555g(6.0モル)、n-ブタノール53gを仕込み溶解させた。50℃に昇温した後に、20%水酸化ナトリウム水溶液220g(1.10モル)を3時間要して添加し、その後更に50℃で1時間反応させた。反応終了後、150℃減圧下で未反応エピクロルヒドリンを留去した。次に、得られた粗エポキシ樹脂にメチルイソブチルケトン300gとn-ブタノール50gとを加え溶解した。更にこの溶液に10W%水酸化ナトリウム水溶液15gを添加して80℃で2時間反応させた後に洗浄液のpHが中性となるまで水100gで水洗を3回繰り返した。次いで共沸によって系内を脱水し、精密濾過を経た後に、溶媒を減圧下で留去してクレゾール-ナフトール共縮ノボラック型エポキシ樹脂(A)と、ナフトールのグリシジルエーテル化合物(B)と、キサンテン化合物(C)を含むエポキシ樹脂(D-1)210gを得た。得られたエポキシ樹脂(D-1)のGPCチャートを図2に、FD-MSのスペクトルを図3に、13C-NMRスペクトルを図4に示す。ここで、図3のFD-MSスペクトルより、M+=200、282のピークを観察されたことにより、ナフトールのグリシジルエーテル化合物(B)と、キサンテン化合物(C)が生成していることを確認した。また、図2に示すGPCチャートにおいて、上記ナフトールのグリシジルエーテル化合物(B)は36.6分にピークを示し、上記キサンテン化合物(C)は37.4分にピークを示すことを確認した。ここで、図2に示すGPCチャートにおいて、エポキシ樹脂(D-1)におけるナフトールのグリシジルエーテル化合物(B)の面積比は2.4%、キサンテン化合物(C)の面積比は3.5%であることを確認した。なお、得られたエポキシ樹脂の軟化点は81℃(B&R法)、エポキシ当量は242g/eqであった。
パラトルエンスルホン酸の量を5gから2gに変更したこと以外は合成例1と同様にしてフェノール樹脂を得た。得られたフェノール樹脂の軟化点は100℃(B&R法)、水酸基当量は156g/eqであった。得られたフェノール樹脂のGPCチャートを図5に示す。図5より、フェノール樹脂におけるナフトールモノマーのGPC測定における面積比は1.1%であり、キサンテン化合物のGPC測定における面積比は1.6%であった。
合成例1のフェノール樹脂165gに代えて、合成例3で得られたフェノール樹脂を156g用いたこと以外は合成例2と同様にしてエポキシ樹脂(D-2)を得た。得られたエポキシ樹脂(D-2)の軟化点は74℃(B&R法)、エポキシ当量は230g/eqであった。得られたエポキシ樹脂(D-2)のGPCチャートを図6に示す。図6より、エポキシ樹脂(D-2)におけるナフトールのグリシジルエーテル化合物(B)のGPC測定における面積比は0.9%、キサンテン化合物(C)のGPC測定における面積比は1.5%であった。
o-クレゾールの量を270g(2.5モル)から216g(2.0モル)に変更したこと以外は合成例1と同様にしてフェノール樹脂を得た。得られたフェノール樹脂の軟化点は107℃(B&R法)、水酸基当量は160g/eqであった。得られたフェノール樹脂のGPCチャートを図7に示す。図7より、フェノール樹脂におけるナフトールモノマーのGPC測定における面積比は1.8%であり、キサンテン化合物のGPC測定における面積比は3.1%であった。
合成例1のフェノール樹脂165gに代えて、合成例5で得られたフェノール樹脂を160g用いたこと以外は合成例2と同様にしてエポキシ樹脂(D-3)を得た。得られたエポキシ樹脂(D-3)の軟化点は80℃(B&R法)、エポキシ当量は236g/eqであった。得られたエポキシ樹脂(D-3)のGPCチャートを図8に示す。図8より、エポキシ樹脂(D-3)におけるナフトールのグリシジルエーテル化合物(B)のGPC測定における面積比は1.8%、キサンテン化合物(C)のGPC測定における面積比は2.5%であった。
α-ナフトールの量を144g(1.0モル)から0g、o-クレゾールの量を270g(2.5モル)から216g(2.0モル)に変更したこと以外は合成例1と同様にしてフェノール樹脂を得た。得られたフェノール樹脂の軟化点は110℃(B&R法)、水酸基当量は169g/eqであった。得られたフェノール樹脂のGPCチャートを図9に示す。図9より、フェノール樹脂におけるナフトールモノマーのGPC測定における面積比は3.5%であり、キサンテン化合物のGPC測定における面積比は5.0%であった。
合成例1のフェノール樹脂165gに代えて、合成例7で得られたフェノール樹脂169gを用いたこと以外は合成例2と同様にしてエポキシ樹脂(D-4)を得た。得られたエポキシ樹脂(D-4)の軟化点は82℃(B&R法)、エポキシ当量は248g/eqであった。得られたエポキシ樹脂(D-4)のGPCチャートを図10に示す。図10より、エポキシ樹脂(D-4)におけるナフトールのグリシジルエーテル化合物(B)のGPC測定における面積比は2.2%、キサンテン化合物(C)のGPC測定における面積比は4.4%であった。
o-クレゾールの量を270g(2.5モル)から324g(3.0モル)に変更したこと以外は合成例1と同様にしてフェノール樹脂を得た。得られたフェノール樹脂の軟化点は122℃(B&R法)、水酸基当量は155g/eqであった。得られたフェノール樹脂のGPCチャートを図11に示す。図11より、フェノール樹脂におけるナフトールモノマーのGPC測定における面積比は1.6%であり、キサンテン化合物のGPC測定における面積比は2.5%であった。
合成例1のフェノール樹脂165gに代えて、合成例9で得られたフェノール樹脂155gを用いたこと以外は合成例2と同様にしてエポキシ樹脂(D-5)を得た。得られたエポキシ樹脂(D-5)の軟化点は93℃(B&R法)、エポキシ当量は234g/eqであった。得られたエポキシ樹脂(D-5)のGPCチャートを図12に示す。図12より、エポキシ樹脂(D-5)におけるナフトールのグリシジルエーテル化合物(B)のGPC測定における面積比は1.1%、キサンテン化合物(C)のGPC測定における面積比は2.5%であった。
α-ナフトールの量を144g(1.0モル)から0g(0モル)、o-クレゾールの量を281g(2.6モル)に変更したこと以外は合成例1と同様にしてフェノール樹脂を得た。得られたフェノール樹脂の軟化点は110℃(B&R法)、水酸基当量は158g/eqであった。得られたフェノール樹脂(A-6)のGPCチャートを図13に示す。図13より、フェノール樹脂におけるナフトールモノマーのGPC測定における面積比は1.2%であり、キサンテン化合物のGPC測定における面積比は5.6%であった。
合成例1のフェノール樹脂165gに代えて、合成例11で得られたフェノール樹脂158gに変更したこと以外は合成例2と同様にしてエポキシ樹脂(D-6)を得た。得られたエポキシ樹脂(D-6)の軟化点は82℃(B&R法)、エポキシ当量は238g/eqであった。得られたエポキシ樹脂(D-6)のGPCチャートを図14に示す。図14より、エポキシ樹脂(D-6)におけるナフトールのグリシジルエーテル化合物(B)のGPC測定における面積比は0.6%、キサンテン化合物(C)のGPC測定における面積比は5.3%であった。
合成例1のフェノール樹脂165gに代えて、合成例1のフェノール樹脂158g(水酸基0.96当量)、α-ナフトール6g(水酸基0.04当量)に変更した以外は合成例2と同様にしてエポキシ樹脂(D-7)を得た。得られたエポキシ樹脂(D-7)の軟化点は79℃(B&R法)、エポキシ当量は240g/eqであった。図示しないが、エポキシ樹脂(D-7)におけるナフトールのグリシジルエーテル化合物(B)のGPC測定における面積比は5.4%、キサンテン化合物(C)のGPC測定における面積比は3.4%であった。
温度計、滴下ロート、冷却管、分留管、撹拌器を取り付けたフラスコに、窒素ガスパージを施しながらα-ナフトール505g(3.50モル)、水158g、蓚酸5gを仕込み、室温から100℃まで45分で昇温しながら撹拌した。続いて、42W%ホルマリン水溶液177g(2.45モル)を1時間要して滴下した。滴下終了後、さらに100℃で1時間攪拌し、その後180℃まで3時間で昇温した。反応終了後、加熱減圧下、水蒸気を吹き込むことによってフリーのα-ナフトールを除去してフェノール樹脂480部を得た。得られたフェノール樹脂の軟化点は142℃(B&R法)、水酸基当量は156g/eqであった。図示しないが、得られたフェノール樹脂におけるGPC測定において、α-ナフトールモノマーと、キサンテン化合物のピークは確認できなかった。
次いで、温度計、冷却管、撹拌器を取り付けたフラスコに窒素ガスパージを施しながら前記反応で得られたフェノール樹脂156g(水酸基1.0当量)、エピクロルヒドリン463g(5.0モル)、n-ブタノール53gを仕込み溶解させた。50℃に昇温した後に、20%水酸化ナトリウム水溶液220g(1.10モル)を3時間要して添加し、その後更に50℃で1時間反応させた。反応終了後、150℃減圧下で未反応エピクロルヒドリンを留去した。それで得られた粗エポキシ樹脂にメチルイソブチルケトン300gとn-ブタノール50gとを加え溶解した。更にこの溶液に10W%水酸化ナトリウム水溶液15gを添加して80℃で2時間反応させた後に洗浄液のpHが中性となるまで水100gで水洗を3回繰り返した。次いで共沸によって系内を脱水し、精密濾過を経た後に、溶媒を減圧下で留去してエポキシ樹脂(D’-1)202gを得た。得られたエポキシ樹脂(D’-1)の軟化点は122℃(B&R法)、エポキシ当量は239g/eqであった。図示しないが、得られたエポキシ樹脂におけるGPC測定において、ナフトールのグリシジルエーテル化合物(B)と、キサンテン化合物(C)のピークは確認できなかった。
α-ナフトールの量を505g(3.50モル)から6g(水酸基0.04当量)に変更したこと以外は比較合成例1と同様にしてフェノール樹脂を得た。次に、比較合成例1のフェノール樹脂156g(水酸基1.0当量)に代えて、前記で得られたフェノール樹脂150g(水酸基0.96当量)を用いたこと以外は比較合成例2と同様にしてエポキシ樹脂(D’-2)を得た。得られたエポキシ樹脂(D’-2)の軟化点は115℃(B&R法)、エポキシ当量は231g/eqであった。図示しないが、得られたエポキシ樹脂におけるGPC測定において、ナフトールのグリシジルエーテル化合物(B)の面積比は3.8%であり、キサンテン化合物(C)のピークは確認できなかった。
合成例2にて得たエポキシ樹脂(D-1)100gをメチルイソブチルケトン100gに溶解させた後、加熱減圧下、水蒸気を吹き込むことによって溶剤とナフトールのグリシジルエーテル化合物(B)を除去したエポキシ樹脂(D’-3)を得た。得られたエポキシ樹脂(D’-3)の軟化点は87℃(B&R法)、エポキシ当量は244g/eqであった。図示しないが、得られたエポキシ樹脂におけるGPC測定において、ナフトールのグリシジルエーテル化合物(B)のピークは確認できず、キサンテン化合物(C)の面積比は3.6%であった。
撹拌機、冷却器及び温度計を備えた2Lのフラスコに1-ナフトール405g、フェノール298g、37%ホルマリン水溶液228gを入れ、オイルバス中で100℃に昇温し、1時間還流させた。次に、2規定の塩酸を2ml加え、系内の水が還流する温度で4時間反応させた後、165℃まで昇温し、12時間反応させた。その後、減圧下にて200℃で4時間加熱して反応溶液を濃縮し、フェノール樹脂を得た。次いで、温度計、冷却管、撹拌器を取り付けたフラスコに窒素ガスパージを施しながら前記反応で得られたフェノール樹脂174g(水酸基1.0当量)、エピクロルヒドリン463g(5.0モル)、n-ブタノール53gを仕込み溶解させた。50℃に昇温した後に、20%水酸化ナトリウム水溶液220g(1.10モル)を3時間要して添加し、その後更に50℃で1時間反応させた。反応終了後、150℃減圧下で未反応エピクロルヒドリンを留去した。それで得られた粗エポキシ樹脂にメチルイソブチルケトン300gとn-ブタノール50gとを加え溶解した。更にこの溶液に10W%水酸化ナトリウム水溶液15gを添加して80℃で2時間反応させた後に洗浄液のpHが中性となるまで水100gで水洗を3回繰り返した。次いで共沸によって系内を脱水し、精密濾過を経た後に、溶媒を減圧下で留去してエポキシ樹脂(D’-4)を得た。得られたエポキシ樹脂(D’-4)の軟化点は62℃(B&R法)、エポキシ当量は261g/eqであった。図示しないが、ナフトールのグリシジルエーテル化合物(B)はGPC測定において3.8%であり、キサンテン化合物(C)のGPC測定における面積比は18.9%であった。
比較合成例2で得られたエポキシ樹脂(D’-1)100gと比較合成例5で得られたエポキシ樹脂(D’-4)50gとを150℃で溶融混合し、エポキシ樹脂(D’-5)を得た。得られたエポキシ樹脂(D’-5)の軟化点は96℃(B&R法)、エポキシ当量は246g/eqであった。図示しないが、ナフトールのグリシジルエーテル化合物(B)はGPC測定において1.3%であり、キサンテン化合物(C)のGPC測定における面積比は6.3%であった。
下記化合物を表1、表2に示した割合で配合し、最終的に各組成物の不揮発分(N.V.)が58W%となるようにメチルエチルケトンを用いて調整した。
・D-1:合成例2で得られたエポキシ樹脂
・D-2:合成例4で得られたエポキシ樹脂
・D-3:合成例6で得られたエポキシ樹脂
・D-4:合成例7で得られたエポキシ樹脂
・D-5:合成例10で得られたエポキシ樹脂
・D-6:合成例12で得られたエポキシ樹脂
・D-7:合成例13で得られたエポキシ樹脂
・D’-1:比較合成例2で得られたエポキシ樹脂
・D’-2:比較合成例3で得られたエポキシ樹脂
・D’-3:比較合成例4で得られたエポキシ樹脂
・D’-4:比較合成例5で得られたエポキシ樹脂
・D’-5:比較合成例6で得られたエポキシ樹脂
・E-1:フェノール樹脂
DIC(株)製TD-2090
フェノールノボラック型フェノール樹脂、水酸基当量:105g/eq
・F-1:硬化促進剤
2-エチル-4-メチルイミダゾール
基材:日東紡績株式会社製 ガラスクロス「#2116」(210×280mm)
プライ数:6 プリプレグ化条件:160℃
硬化条件:200℃、40kg/cm2で1.5時間、成型後板厚:0.8mm
前記で作製した積層板を厚さ0.8mmの硬化物を幅5mm、長さ54mmのサイズに切り出し、これを試験片1とした。この試験片1を粘弾性測定装置(DMA:レオメトリック社製固体粘弾性測定装置「RSAII」、レクタンギュラーテンション法:周波数1Hz、昇温速度3℃/分)を用いて、弾性率変化が最大となる(tanδ変化率が最も大きい)温度をガラス転移温度として評価した。
JIS-C-6481に準拠し、平山製作所製プレッシャークッカー試験機「PC-304RIII」により、121℃、湿度100%、2気圧の条件の下、4時間保管した前後の質量を測定し、質量変化を吸湿率として算出した。
積層板を5mm×5mm×0.8mmのサイズに切り出し、これを試験片2として熱機械分析装置(TMA:セイコーインスツルメント社製SS-6100)の下記圧縮モードで熱機械分析を行った。なお、下記条件での測定を同一サンプルにつき2回実施し、2回目の測定における、40℃から60℃の温度範囲における平均線膨張率を熱膨張係数として評価した。
測定条件
測定架重:88.8mN
昇温速度:10℃/分で2回
測定温度範囲:-50℃から300℃
積層板を5mm×5mm×0.8mmのサイズに切り出した試験片2について熱機械分析装置(TMA:セイコーインスツルメント社製SS-6100)の下記圧縮モードで熱機械分析を行った。なお、下記条件での測定を同一サンプルにつき2回実施し、1回目と2回目の測定時の30℃におけるプローブの位置の差を、元の試験片2の厚みで除することで熱履歴後の収縮率として評価した。
測定架重:88.8mN
昇温速度:3℃/分で2回
測定温度範囲:-30℃から260℃
Claims (14)
- 前記グリシジルエーテル化合物(B)の含有率がGPC測定における面積比率で0.1%~4.0%である請求項1記載のエポキシ樹脂。
- 前記グリシジルエーテル化合物(B)と、前記キサンテン化合物(C)との合計含有率が、GPC測定における面積比率で1.0%~8.0%である請求項1記載のエポキシ樹脂。
- エポキシ当量が220g/eq~275g/eqである請求項1記載のエポキシ樹脂。
- 請求項1~4の何れか1つに記載のエポキシ樹脂と、硬化剤とを必須成分とする硬化性樹脂組成物。
- 請求項5に記載の硬化性樹脂組成物を硬化反応させてなる硬化物。
- 請求項5に記載の硬化性樹脂組成物と、無機充填材とを含有する半導体封止材料。
- 請求項7に記載の半導体封止材料を加熱硬化させて得られる半導体装置。
- 請求項5に記載の硬化性樹脂組成物を有機溶剤に希釈したものを補強基材に含浸し、得られる含浸基材を半硬化させることにより得られるプリプレグ。
- 請求項5に記載の硬化性樹脂組成物を有機溶剤に希釈したワニスを得、これを板状に賦形したものと銅箔とを加熱加圧成型することにより得られる回路基板。
- 請求項5に記載の硬化性樹脂組成物を有機溶剤に希釈したものを基材フィルム上に塗布し、乾燥させることにより得られるビルドアップフィルム。
- 請求項11に記載のビルドアップフィルムを回路が形成された回路基板に塗布し、加熱硬化させて得られる回路基板に凹凸を形成し、次いで前記回路基板にめっき処理を行うことにより得られるビルドアップ基板。
- 請求項5に記載の硬化性樹脂組成物と、強化繊維とを含有する繊維強化複合材料。
- 請求項13に記載の繊維強化複合材料を硬化させてなる繊維強化成形品。
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US15/321,528 US10113028B2 (en) | 2014-06-30 | 2015-01-27 | Epoxy resin, curable resin composition, cured product, semiconductor encapsulating material, semiconductor device, prepreg, circuit board, buildup film, buildup substrate, fiber-reinforced composite material and fiber-reinforced molded article |
| JP2015554921A JP5904387B1 (ja) | 2014-06-30 | 2015-01-27 | エポキシ樹脂、硬化性樹脂組成物、硬化物、半導体封止材料、半導体装置、プレプリグ、回路基板、ビルドアップフィルム、ビルドアップ基板、繊維強化複合材料、及び繊維強化成形品 |
| KR1020167036654A KR102268342B1 (ko) | 2014-06-30 | 2015-01-27 | 에폭시 수지, 경화성 수지 조성물, 경화물, 반도체 봉지 재료, 반도체 장치, 프리프레그, 회로 기판, 빌드업 필름, 빌드업 기판, 섬유 강화 복합 재료, 및 섬유 강화 성형품 |
| CN201580036096.XA CN106471034B (zh) | 2014-06-30 | 2015-01-27 | 环氧树脂、固化性树脂组合物、固化物、半导体密封材料、半导体装置、预浸料、电路基板 |
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| JP2014-134162 | 2014-06-30 | ||
| JP2014134162 | 2014-06-30 |
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| WO2016002241A1 true WO2016002241A1 (ja) | 2016-01-07 |
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| PCT/JP2015/052135 Ceased WO2016002241A1 (ja) | 2014-06-30 | 2015-01-27 | エポキシ樹脂、硬化性樹脂組成物、硬化物、半導体封止材料、半導体装置、プレプリグ、回路基板、ビルドアップフィルム、ビルドアップ基板、繊維強化複合材料、及び繊維強化成形品 |
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| Country | Link |
|---|---|
| US (1) | US10113028B2 (ja) |
| JP (1) | JP5904387B1 (ja) |
| KR (1) | KR102268342B1 (ja) |
| CN (1) | CN106471034B (ja) |
| TW (1) | TWI647247B (ja) |
| WO (1) | WO2016002241A1 (ja) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2023079361A1 (en) | 2021-11-03 | 2023-05-11 | Solubag Spa | Hydrodegradable packaging material |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US10981865B2 (en) * | 2016-06-03 | 2021-04-20 | Dic Corporation | Substituted or unsubstituted allyl group-containing maleimide compound, production method therefor, and composition and cured product using said compound |
| JP7109940B2 (ja) * | 2018-03-08 | 2022-08-01 | 日東電工株式会社 | 封止用接着シート |
| EP3766926B1 (en) * | 2018-03-20 | 2025-07-02 | Toray Industries, Inc. | Prepreg and fiber-reinforced composite material |
| KR102542225B1 (ko) * | 2018-03-30 | 2023-06-12 | 미쓰이 가가쿠 토세로 가부시키가이샤 | 전자 장치의 제조 방법 |
| JP6924292B2 (ja) | 2020-01-22 | 2021-08-25 | 日本化薬株式会社 | エポキシ樹脂混合物、エポキシ樹脂組成物およびその硬化物 |
| CN113473700B (zh) * | 2021-06-30 | 2022-10-25 | 江苏传艺科技股份有限公司 | 一种抗弯折耐压的5g柔性电路板及其生产工艺 |
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2015
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- 2015-01-27 US US15/321,528 patent/US10113028B2/en active Active
- 2015-01-27 CN CN201580036096.XA patent/CN106471034B/zh active Active
- 2015-01-27 JP JP2015554921A patent/JP5904387B1/ja active Active
- 2015-01-27 WO PCT/JP2015/052135 patent/WO2016002241A1/ja not_active Ceased
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| WO2023079361A1 (en) | 2021-11-03 | 2023-05-11 | Solubag Spa | Hydrodegradable packaging material |
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| US20170240690A1 (en) | 2017-08-24 |
| TWI647247B (zh) | 2019-01-11 |
| KR20170028323A (ko) | 2017-03-13 |
| TW201600533A (zh) | 2016-01-01 |
| JPWO2016002241A1 (ja) | 2017-04-27 |
| KR102268342B1 (ko) | 2021-06-23 |
| CN106471034B (zh) | 2018-08-28 |
| US10113028B2 (en) | 2018-10-30 |
| CN106471034A (zh) | 2017-03-01 |
| JP5904387B1 (ja) | 2016-04-13 |
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