JP5630652B2 - Epoxy resin molding material for sealing and electronic component device - Google Patents

Description

  The present invention relates to an epoxy resin molding material for sealing and an electronic component device including an element sealed with the molding material.

Conventionally, epoxy resin molding materials have been widely used in the field of sealing electronic components such as transistors and ICs. This is because the epoxy resin has a good balance of electrical properties, moisture resistance, heat resistance, mechanical properties, adhesiveness with inserts, and the like. In particular, the combination of an ortho-cresol novolac type epoxy resin and a novolac type phenol curing agent has an excellent balance between these, and has become the mainstream of the base resin of the molding material for sealing.
As electronic devices have become smaller, lighter, and higher performance in recent years, mounting density has been increasing, and electronic component devices have come to be made surface mount packages from conventional pin insertion types. . When a semiconductor device is attached to a wiring board, the conventional pin insertion type package is soldered from the back side of the wiring board after the pins are inserted into the wiring board, so that the package is not directly exposed to high temperatures. However, in the surface mount type package, the entire semiconductor device is processed by a solder bath, a reflow device or the like, so that it is directly exposed to the soldering temperature. As a result, when the package absorbs moisture, the moisture absorption moisture rapidly expands during soldering, causing peeling of the adhesive interface and package cracks, resulting in a decrease in package reliability during mounting.
As measures to solve the above problems, in order to reduce moisture absorption inside the semiconductor device, IC moisture-proof packaging, or a method of sufficiently drying the IC in advance before mounting on a wiring board is used. (For example, refer to Non-Patent Document 1.) However, these methods are time-consuming and costly. As another countermeasure, there is a method of increasing the content of the filler, but this method has a problem of causing a significant decrease in fluidity, although the moisture absorption inside the semiconductor device is reduced. When the fluidity of the epoxy resin molding material for sealing is low, problems such as the occurrence of gold wire flow, voids, pinholes, etc. occur during molding (for example, see Non-Patent Document 2).

Japanese Patent Laid-Open No. 06-224328

Hitachi, Ltd., Semiconductor Division, "Mounting technology of surface mount LSI package and its reliability improvement", Applied Technology Publication 1, November 16, 988, pages 254-256 Edited by Technical Information Association, Inc. “High Reliability of Semiconductor Encapsulating Resin”, Technical Information Association, January 31, 1990, pages 172-176

  The present invention has been made in view of such a situation, and provides an epoxy resin molding material for sealing having high adhesion to a metal at high temperatures and excellent reflow resistance, and an electronic component device including an element sealed thereby. It is something to try.

The present invention relates to the following.
(1) (A) For sealing containing an epoxy resin containing two or more epoxy groups in one molecule, (B) a curing agent, and (C) a benzophenone derivative having one or more phenolic hydroxyl groups in one molecule. Epoxy resin molding material.
(2) The term (C) in the epoxy resin molding material for sealing, wherein the proportion of the benzophenone derivative having one or more phenolic hydroxyl groups in one molecule is 0.1% by mass or more and less than 1.0% by mass ( The epoxy resin molding material for sealing as described in 1).
(3) (D) The epoxy resin molding material for sealing according to item (1) or item (2), further containing a silane compound.
(4) (E) The epoxy resin molding material for sealing according to any one of items (1) to (3), which further contains a curing accelerator.
(5) (F) The epoxy resin molding material for sealing according to any one of items (1) to (4), further containing an inorganic filler.
(6) An electronic component device including an element sealed with the sealing epoxy resin molding material according to any one of items (1) to (5).

  By using the epoxy resin molding material for sealing obtained by the present invention, the adhesiveness with a metal at a high temperature is improved, so that a highly reliable electronic component device having excellent reflow resistance can be obtained, and its industrial The value is great.

(A) The epoxy resin containing two or more epoxy groups in one molecule used in the present invention is generally used for an epoxy resin molding material for sealing and is not particularly limited. For example, a phenol novolac type epoxy resin Phenols such as phenol, cresol, xylenol, resorcin, catechol, bisphenol A, bisphenol F, α-naphthol, β-naphthol, dihydroxynaphthalene, including orthocresol novolac type epoxy resin, epoxy resin having triphenylmethane skeleton Epoxylated novolak resin obtained by condensation or cocondensation of aldehyde group compounds such as formaldehyde, acetaldehyde, propionaldehyde, benzaldehyde, salicylaldehyde with acid catalyst , Alkyl-substituted, aromatic ring-substituted or unsubstituted bisphenol A, bisphenol F, bisphenol S, diglycidyl ethers such as biphenol and thiodiphenol, stilbene type epoxy resins, hydroquinone type epoxy resins, phthalic acids, dimer acids and other polybasic bases Glycidyl ester type epoxy resin obtained by reaction of acid and epichlorohydrin, glycidylamine type epoxy resin obtained by reaction of polyamine such as diaminodiphenylmethane and isocyanuric acid with epichlorohydrin, epoxidized product of co-condensation resin of dicyclopentadiene and phenol, naphthalene Epoxy resin having a ring, phenol aralkyl resin synthesized from phenol and dimethoxyparaxylene or bis (methoxymethyl) biphenyl, naphthol aralkyl Epoxidized products of aralkyl type phenol resins such as resins, trimethylolpropane type epoxy resins, terpene modified epoxy resins, linear aliphatic epoxy resins obtained by oxidizing olefin bonds with peracids such as peracetic acid, and alicyclic epoxy resins These may be used, and one of these may be used alone, or two or more may be used in combination.
Among them, from the viewpoint of compatibility between fluidity and curability, it is preferable to contain a biphenyl type epoxy resin which is a diglycidyl ether of alkyl-substituted, aromatic ring-substituted or unsubstituted biphenol, and from the viewpoint of curability. It preferably contains a novolac-type epoxy resin, and preferably contains a naphthalene-type epoxy resin and / or a triphenylmethane-type epoxy resin from the viewpoint of heat resistance and low warpage. From the viewpoint of coexistence of flowability, it is preferable to contain a bisphenol F-type epoxy resin that is a diglycidyl ether of alkyl-substituted, aromatic ring-substituted or unsubstituted bisphenol F. Thiodiph, a diglycidyl ether of alkyl-substituted, aromatic ring-substituted or unsubstituted thiodiphenol Phenol aralkyl synthesized from alkyl-substituted, aromatic-ring-substituted or unsubstituted phenol and bis (methoxymethyl) biphenyl from the viewpoint of compatibility between curability and flame retardancy A naphthol-aralkyl resin synthesized from alkyl-substituted, aromatic-ring-substituted or unsubstituted naphthols and dimethoxyparaxylene from the viewpoint of compatibility between storage stability and flame retardancy, preferably containing an epoxidized resin. It is preferable to contain the epoxidized product.
Examples of the biphenyl type epoxy resin include an epoxy resin represented by the following general formula (I).

（一般式（Ｉ）中、Ｒ１〜Ｒ８は水素原子及び炭素数１〜１０の置換又は非置換の一価の炭化水素基から選ばれ、全てが同一でも異なっていてもよい。ｎは０又は１〜３の整数を示す。）
上記一般式（Ｉ）で示されるビフェニル型エポキシ樹脂は、ビフェノール化合物にエピクロルヒドリンを公知の方法で反応させることによって得られる。一般式（Ｉ）中のＲ１〜Ｒ８としては、たとえば、水素原子、メチル基、エチル基、プロピル基、ブチル基、イソプロピル基、イソブチル基、ｔｅｒｔ−ブチル基等の炭素数１〜１０のアルキル基、ビニル基、アリル基、ブテニル基等の炭素数１〜１０のアルケニル基などが挙げられ、なかでも水素原子又はメチル基が好ましい。このようなエポキシ樹脂としては、たとえば、４，４’‐ビス（２，３‐エポキシプロポキシ）ビフェニル又は４，４’‐ビス（２，３‐エポキシプロポキシ）‐３，３’，５，５’‐テトラメチルビフェニルを主成分とするエポキシ樹脂、エピクロルヒドリンと４，４’‐ビフェノール又は４，４’‐（３，３’，５，５’‐テトラメチル）ビフェノールとを反応させて得られるエポキシ樹脂等が挙げられる。なかでも４，４’‐ビス（２，３‐エポキシプロポキシ）‐３，３’，５，５’‐テトラメチルビフェニルを主成分とするエポキシ樹脂が好ましい。そのようなエポキシ樹脂としては、市販品としてジャパンエポキシレジン株式会社製商品名ＹＸ‐４０００が入手可能である。上記ビフェニル型エポキシ樹脂の配合量は、その性能を発揮するためにエポキシ樹脂全量中２０質量％以上とすることが好ましく、３０質量％以上がより好ましく、５０質量％以上がさらに好ましい。

(In the general formula (I), R1 to R8 are selected from a hydrogen atom and a substituted or unsubstituted monovalent hydrocarbon group having 1 to 10 carbon atoms, and all may be the same or different. N is 0 or An integer of 1 to 3 is shown.)
The biphenyl type epoxy resin represented by the general formula (I) can be obtained by reacting a biphenol compound with epichlorohydrin by a known method. As R1 to R8 in the general formula (I), for example, a hydrogen atom, a methyl group, an ethyl group, a propyl group, a butyl group, an isopropyl group, an isobutyl group, a tert-butyl group or the like alkyl group having 1 to 10 carbon atoms , An alkenyl group having 1 to 10 carbon atoms such as a vinyl group, an allyl group, and a butenyl group, among which a hydrogen atom or a methyl group is preferable. Examples of such an epoxy resin include 4,4′-bis (2,3-epoxypropoxy) biphenyl or 4,4′-bis (2,3-epoxypropoxy) -3,3 ′, 5,5 ′. -Epoxy resin based on tetramethylbiphenyl, epoxy resin obtained by reacting epichlorohydrin with 4,4'-biphenol or 4,4 '-(3,3', 5,5'-tetramethyl) biphenol Etc. Of these, an epoxy resin mainly composed of 4,4′-bis (2,3-epoxypropoxy) -3,3 ′, 5,5′-tetramethylbiphenyl is preferable. As such an epoxy resin, a product name YX-4000 manufactured by Japan Epoxy Resin Co., Ltd. is available as a commercial product. The blending amount of the biphenyl type epoxy resin is preferably 20% by mass or more, more preferably 30% by mass or more, and further preferably 50% by mass or more in the total amount of the epoxy resin in order to exhibit its performance.

  Examples of the thiodiphenol type epoxy resin include an epoxy resin represented by the following general formula (II).

（一般式（ＩＩ）中、Ｒ１〜Ｒ８は水素原子及び炭素数１〜１０の置換又は非置換の一価の炭化水素基から選ばれ、全てが同一でも異なっていてもよい。ｎは０又は１〜３の整数を示す。）
上記一般式（ＩＩ）で示されるチオジフェノール型エポキシ樹脂は、チオジフェノール化合物にエピクロルヒドリンを公知の方法で反応させることによって得られる。一般式（ＩＩ）中のＲ１〜Ｒ８としては、たとえば、水素原子、メチル基、エチル基、プロピル基、ブチル基、イソプロピル基、イソブチル基、ｔｅｒｔ−ブチル基等の炭素数１〜１０のアルキル基、ビニル基、アリル基、ブテニル基等の炭素数１〜１０のアルケニル基などが挙げられ、なかでも水素原子、メチル基又はｔｅｒｔ−ブチル基が好ましい。このようなエポキシ樹脂としては、たとえば、４，４’‐ジヒドロキシジフェニルスルフィドのジグリシジルエーテルを主成分とするエポキシ樹脂、２，２’，５，５’‐テトラメチル‐４，４’‐ジヒドロキシジフェニルスルフィドのジグリシジルエーテルを主成分とするエポキシ樹脂、２，２’‐ジメチル‐４，４’‐ジヒドロキシ‐５，５’‐ジ‐ｔｅｒｔ‐ブチルジフェニルスルフィドのジグリシジルエーテルを主成分とするエポキシ樹脂等が挙げられ、なかでも２，２’‐ジメチル‐４，４’‐ジヒドロキシ‐５，５’‐ジ‐ｔｅｒｔ‐ブチルジフェニルスルフィドのジグリシジルエーテルを主成分とするエポキシ樹脂を主成分とするエポキシ樹脂が好ましい。そのようなエポキシ樹脂としては、市販品として新日鐵化学株式会社製商品名ＹＳＬＶ‐１２０ＴＥが入手可能である。上記チオジフェノール型エポキシ樹脂の配合量は、その性能を発揮するためにエポキシ樹脂全量中２０質量％以上とすることが好ましく、３０質量％以上がより好ましく、５０質量％以上がさらに好ましい。

(In General Formula (II), R1 to R8 are selected from a hydrogen atom and a substituted or unsubstituted monovalent hydrocarbon group having 1 to 10 carbon atoms, and all may be the same or different. N is 0 or An integer of 1 to 3 is shown.)
The thiodiphenol type epoxy resin represented by the general formula (II) can be obtained by reacting a thiodiphenol compound with epichlorohydrin by a known method. As R1 to R8 in the general formula (II), for example, a hydrogen atom, a methyl group, an ethyl group, a propyl group, a butyl group, an isopropyl group, an isobutyl group, a tert-butyl group or the like alkyl group having 1 to 10 carbon atoms , An alkenyl group having 1 to 10 carbon atoms such as a vinyl group, an allyl group, and a butenyl group, among which a hydrogen atom, a methyl group, or a tert-butyl group is preferable. Examples of such epoxy resins include epoxy resins mainly composed of diglycidyl ether of 4,4′-dihydroxydiphenyl sulfide, and 2,2 ′, 5,5′-tetramethyl-4,4′-dihydroxydiphenyl. Epoxy resin based on diglycidyl ether of sulfide, epoxy resin based on diglycidyl ether of 2,2'-dimethyl-4,4'-dihydroxy-5,5'-di-tert-butyldiphenyl sulfide Among them, an epoxy mainly composed of an epoxy resin mainly composed of diglycidyl ether of 2,2′-dimethyl-4,4′-dihydroxy-5,5′-di-tert-butyldiphenyl sulfide Resins are preferred. As such an epoxy resin, a trade name YSLV-120TE manufactured by Nippon Steel Chemical Co., Ltd. is available as a commercial product. The blending amount of the thiodiphenol type epoxy resin is preferably 20% by mass or more, more preferably 30% by mass or more, and further preferably 50% by mass or more in the total amount of the epoxy resin in order to exhibit its performance.

  Examples of the bisphenol F type epoxy resin include an epoxy resin represented by the following general formula (III).

（一般式（ＩＩＩ）中、Ｒ１〜Ｒ８は水素原子及び炭素数１〜１０の置換又は非置換の一価の炭化水素基から選ばれ、全てが同一でも異なっていてもよい。ｎは０又は１〜３の整数を示す。）
上記一般式（ＩＩＩ）で示されるビスフェノールＦ型エポキシ樹脂は、ビスフェノールＦ化合物にエピクロルヒドリンを公知の方法で反応させることによって得られる。一般式（ＩＩＩ）中のＲ１〜Ｒ８としては、たとえば、水素原子、メチル基、エチル基、プロピル基、ブチル基、イソプロピル基、イソブチル基、ｔｅｒｔ−ブチル基等の炭素数１〜１０のアルキル基、ビニル基、アリル基、ブテニル基等の炭素数１〜１０のアルケニル基などが挙げられ、なかでも水素原子又はメチル基が好ましい。このようなエポキシ樹脂としては、たとえば、４，４’‐メチレンビス（２，６‐ジメチルフェノール）のジグリシジルエーテルを主成分とするエポキシ樹脂、４，４’‐メチレンビス（２，３，６‐トリメチルフェノール）のジグリシジルエーテルを主成分とするエポキシ樹脂、４，４’‐メチレンビスフェノールのジグリシジルエーテルを主成分とするエポキシ樹脂等が挙げられ、なかでも４，４’‐メチレンビス（２，６‐ジメチルフェノール）のジグリシジルエーテルを主成分とするエポキシ樹脂が好ましい。そのようなエポキシ樹脂としては、市販品として新日鐵化学株式会社製商品名ＹＳＬＶ‐８０ＸＹが入手可能である。上記ビスフェノールＦ型エポキシ樹脂の配合量は、その性能を発揮するためにエポキシ樹脂全量中２０質量％以上とすることが好ましく、３０質量％以上がより好ましく、５０質量％以上がさらに好ましい。

(In the general formula (III), R1 to R8 are selected from a hydrogen atom and a substituted or unsubstituted monovalent hydrocarbon group having 1 to 10 carbon atoms, and all may be the same or different. N is 0 or An integer of 1 to 3 is shown.)
The bisphenol F type epoxy resin represented by the general formula (III) can be obtained by reacting a bisphenol F compound with epichlorohydrin by a known method. Examples of R1 to R8 in the general formula (III) include alkyl groups having 1 to 10 carbon atoms such as a hydrogen atom, a methyl group, an ethyl group, a propyl group, a butyl group, an isopropyl group, an isobutyl group, and a tert-butyl group. , An alkenyl group having 1 to 10 carbon atoms such as a vinyl group, an allyl group, and a butenyl group, among which a hydrogen atom or a methyl group is preferable. Examples of such an epoxy resin include an epoxy resin mainly composed of 4,4′-methylenebis (2,6-dimethylphenol) diglycidyl ether, and 4,4′-methylenebis (2,3,6-trimethyl). Phenolic epoxy resin whose main component is diglycidyl ether, 4,4'-methylenebisphenol diglycidyl ether as the main component, 4,4'-methylenebis (2,6- An epoxy resin mainly composed of diglycidyl ether of (dimethylphenol) is preferred. As such an epoxy resin, a product name YSLV-80XY manufactured by Nippon Steel Chemical Co., Ltd. is available as a commercial product. The blending amount of the bisphenol F-type epoxy resin is preferably 20% by mass or more, more preferably 30% by mass or more, and further preferably 50% by mass or more in the total amount of the epoxy resin in order to exhibit its performance.

  Examples of the novolac type epoxy resin include an epoxy resin represented by the following general formula (IV).

（一般式（ＩＶ）中、Ｒは水素原子及び炭素数１〜１０の置換又は非置換の一価の炭化水素基から選ばれ、ｎは０〜１０の整数を示す。）
上記一般式（ＩＶ）で示されるノボラック型エポキシ樹脂は、ノボラック型フェノール樹脂にエピクロルヒドリンを反応させることによって容易に得られる。なかでも、上記一般式（ＩＶ）中のＲとしては、メチル基、エチル基、プロピル基、ブチル基、イソプロピル基、イソブチル基等の炭素数１〜１０のアルキル基、メトキシ基、エトキシ基、プロポキシ基、ブトキシ基等の炭素数１〜１０のアルコキシル基が好ましく、水素原子又はメチル基がより好ましい。ｎは０〜３の整数が好ましい。上記一般式（ＩＶ）で示されるノボラック型エポキシ樹脂のなかでも、オルソクレゾールノボラック型エポキシ樹脂が好ましい。ノボラック型エポキシ樹脂を使用する場合、その配合量は、その性能を発揮するためにエポキシ樹脂全量中２０質量％以上とすることが好ましく、３０質量％以上がより好ましい。

(In general formula (IV), R is selected from a hydrogen atom and a substituted or unsubstituted monovalent hydrocarbon group having 1 to 10 carbon atoms, and n represents an integer of 0 to 10.)
The novolak type epoxy resin represented by the general formula (IV) can be easily obtained by reacting a novolak type phenol resin with epichlorohydrin. Among them, R in the general formula (IV) is an alkyl group having 1 to 10 carbon atoms such as a methyl group, an ethyl group, a propyl group, a butyl group, an isopropyl group, or an isobutyl group, a methoxy group, an ethoxy group, or a propoxy group. C1-C10 alkoxyl groups, such as a group and a butoxy group, are preferable, and a hydrogen atom or a methyl group is more preferable. n is preferably an integer of 0 to 3. Of the novolak epoxy resins represented by the general formula (IV), orthocresol novolac epoxy resins are preferable. In the case of using a novolac type epoxy resin, the blending amount thereof is preferably 20% by mass or more, more preferably 30% by mass or more, based on the total amount of the epoxy resin in order to exhibit its performance.

Examples of the naphthalene type epoxy resin include an epoxy resin represented by the following general formula (V), and examples of the triphenylmethane type epoxy resin include an epoxy resin represented by the following general formula (VI).
The naphthalene type epoxy resin represented by the following general formula (V) includes a random copolymer randomly including m structural units and n structural units, an alternating copolymer including alternately, a copolymer including regularly Examples thereof include block copolymers containing in the form of a block or a block, and any one of these may be used alone or in combination of two or more.
Further, the triphenylmethane type epoxy resin represented by the following general formula (VI) is not particularly limited, but a salicylaldehyde type epoxy resin is preferable.

（一般式（Ｖ）中、Ｒ_１〜Ｒ_３は、水素原子及び炭素数１〜１２の置換又は非置換の一価の炭化水素基から選ばれ、これらは全てが同一でも異なっていてもよい。ｐは１又は０で、ｍ、ｎはそれぞれ０〜１１の整数であって、（ｍ＋ｎ）が１〜１１の整数でかつ（ｍ＋ｐ）が１〜１２の整数となるよう選ばれる。ｉは０〜３の整数、ｊは０〜２の整数、ｋは０〜４の整数を示す。）

(In the general formula (V), R _{1 to} R ₃ are selected from a hydrogen atom and a substituted or unsubstituted monovalent hydrocarbon group having 1 to 12 carbon atoms, which may all be the same or different. P is 1 or 0, m and n are each an integer of 0 to 11, and (m + n) is an integer of 1 to 11 and (m + p) is an integer of 1 to 12. i is An integer from 0 to 3, j is an integer from 0 to 2, and k is an integer from 0 to 4.)

（一般式（ＶＩ）中、Ｒは水素原子及び炭素数１〜１０の置換又は非置換の一価の炭化水素基から選ばれ、ｎは１〜１０の整数を示す。）
これらナフタレン型エポキシ樹脂及びトリフェニルメタン型エポキシ樹脂はいずれか１種を単独で用いても両者を組合せて用いてもよいが、その配合量は、その性能を発揮するためにエポキシ樹脂全量中、合わせて２０質量％以上とすることが好ましく、３０質量％以上がより好ましく、５０質量％以上とすることがさらに好ましい。

(In general formula (VI), R is selected from a hydrogen atom and a substituted or unsubstituted monovalent hydrocarbon group having 1 to 10 carbon atoms, and n represents an integer of 1 to 10.)
These naphthalene type epoxy resins and triphenylmethane type epoxy resins may be used alone or in combination of both, but the blending amount thereof is the total amount of the epoxy resin in order to exhibit its performance, In total, it is preferably 20% by mass or more, more preferably 30% by mass or more, and further preferably 50% by mass or more.

  Examples of the epoxidized phenol / aralkyl resin include an epoxy resin represented by the following general formula (VII) and an epoxy resin represented by the following general formula (VIII).

（一般式（ＶＩＩ）中、Ｒ１〜Ｒ_５は水素原子、炭素数１〜１２の置換又は非置換の一価の炭化水素基から選ばれ、すべてが同一でも異なっていてもよい。ｉは０又は１〜３の整数を示し、ｎは０又は１〜１０の整数を示す。）

(In the general formula (VII), R1~R ₅ are selected from hydrogen atoms and substituted or unsubstituted monovalent hydrocarbon group having 1 to 12 carbon atoms, all of which may be the same or different .i 0 Or an integer of 1 to 3, and n represents 0 or an integer of 1 to 10.)

（一般式（ＶＩＩＩ）中、Ｒ１〜Ｒ_９は水素原子、炭素数１〜１２の置換又は非置換の一価の炭化水素基から選ばれ、すべてが同一でも異なっていてもよい。ｉは０又は１〜３の整数を示し、ｎは０又は１〜１０の整数を示す。）
上記一般式（ＶＩＩ）で示されるフェノール・アラルキル樹脂のエポキシ化物は、アルキル置換、芳香環置換又は非置換のフェノールとジメトキシパラキシレンから合成されるフェノール・アラルキル樹脂にエピクロルヒドリンを公知の方法で反応させることによって得られる。また、上記一般式（ＶＩＩＩ）で示されるビフェニレン骨格含有フェノール・アラルキル樹脂のエポキシ化物は、アルキル置換、芳香環置換又は非置換のフェノールとビス（メトキシメチル）ビフェニルから合成されるフェノール・アラルキル樹脂にエピクロルヒドリンを公知の方法で反応させることによって得られる。一般式（ＶＩＩ）中のＲ１〜Ｒ_５および一般式（ＶＩＩＩ）中のＲ１〜Ｒ_９としては、たとえば、メチル基、エチル基、プロピル基、イソプロピル基、ｎ−ブチル基、ｓｅｃ−ブチル基、ｔｅｒｔ−ブチル基、ペンチル基、ヘキシル基、オクチル基、デシル基、ドデシル基等の鎖状アルキル基、シクロペンチル基、シクロヘキシル基、シクロヘプチル基、シクロペンテニル基、シクロヘキセニル基等の環状アルキル基、ベンジル基、フェネチル基等のアリール基置換アルキル基、メトキシ基置換アルキル基、エトキシ基置換アルキル基、ブトキシ基置換アルキル基等のアルコキシ基置換アルキル基、アミノアルキル基、ジメチルアミノアルキル基、ジエチルアミノアルキル基等のアミノ基置換アルキル基、水酸基置換アルキル基、フェニル基、ナフチル基、ビフェニル基等の無置換アリール基、トリル基、ジメチルフェニル基、エチルフェニル基、ブチルフェニル基、ｔｅｒｔ−ブチルフェニル基、ジメチルナフチル基等のアルキル基置換アリール基、メトキシフェニル基、エトキシフェニル基、ブトキシフェニル基、ｔｅｒｔ−ブトキシフェニル基、メトキシナフチル基等のアルコキシ基置換アリール基、ジメチルアミノ基、ジエチルアミノ基等のアミノ基置換アリール基、水酸基置換アリール基などが挙げられ、なかでも水素原子又はメチル基が好ましい。また一般式（ＶＩＩ）および一般式（ＶＩＩＩ）中のｎとしては平均で６以下がより好ましく、そのようなエポキシ樹脂としては、一般式（ＶＩＩ）は、市販品として日本化薬株式会社製商品名ＮＣ−２０００Ｌが、一般式（ＶＩＩＩ）は市販品として日本化薬株式会社製商品名ＮＣ‐３０００Ｓが入手可能である。
また、難燃性と耐リフロー性、流動性の両立の観点からは上記一般式（Ｉ）で示されるエポキシ樹脂を含有していることが好ましく、なかでも上記一般式（ＶＩＩＩ）のＲ１〜Ｒ８が水素原子で上記一般式（Ｉ）のＲ１〜Ｒ８が水素原子でｎ＝０であることがより好ましい。また特にその配合質量比は、（Ｉ）／（ＶＩＩＩ）＝５０／５０〜５／９５であることが好ましく、４０／６０〜１０／９０であるものがより好ましく、３０／７０〜１５／８５であるものがさらに好ましい。このような配合質量比を満足する化合物としては、ＣＥＲ−３０００Ｌ（日本化薬株式会社製商品名）等が市販品として入手可能である。

(In the general formula (VIII), R1~R ₉ are selected from hydrogen atoms and substituted or unsubstituted monovalent hydrocarbon group having 1 to 12 carbon atoms, all of which may be the same or different .i 0 Or an integer of 1 to 3, and n represents 0 or an integer of 1 to 10.)
The epoxidized phenol / aralkyl resin represented by the general formula (VII) is obtained by reacting epichlorohydrin with a phenol / aralkyl resin synthesized from alkyl-substituted, aromatic-ring-substituted or unsubstituted phenol and dimethoxyparaxylene by a known method. Can be obtained. Further, the epoxidized product of the biphenylene skeleton-containing phenol / aralkyl resin represented by the general formula (VIII) is a phenol / aralkyl resin synthesized from alkyl-substituted, aromatic-ring-substituted or unsubstituted phenol and bis (methoxymethyl) biphenyl. It can be obtained by reacting epichlorohydrin by a known method. The R1～R ₉ of the general formula (VII) R1~R ₅ and the general formula in in (VIII), for example, a methyl group, an ethyl group, a propyl group, an isopropyl group, n- butyl group, sec- butyl group, Chain alkyl groups such as tert-butyl group, pentyl group, hexyl group, octyl group, decyl group, dodecyl group, cyclic alkyl groups such as cyclopentyl group, cyclohexyl group, cycloheptyl group, cyclopentenyl group, cyclohexenyl group, benzyl Group, aryl group substituted alkyl group such as phenethyl group, methoxy group substituted alkyl group, ethoxy group substituted alkyl group, alkoxy group substituted alkyl group such as butoxy group substituted alkyl group, aminoalkyl group, dimethylaminoalkyl group, diethylaminoalkyl group, etc. Amino group-substituted alkyl group, hydroxyl group-substituted alkyl group, phenyl , Unsubstituted aryl groups such as naphthyl group and biphenyl group, tolyl group, dimethylphenyl group, ethylphenyl group, butylphenyl group, tert-butylphenyl group, dimethylnaphthyl group and other alkyl group-substituted aryl groups, methoxyphenyl group, ethoxy Examples include a phenyl group, a butoxyphenyl group, a tert-butoxyphenyl group, an alkoxy group-substituted aryl group such as a methoxynaphthyl group, an amino group-substituted aryl group such as a dimethylamino group and a diethylamino group, and a hydroxyl group-substituted aryl group. An atom or a methyl group is preferred. Moreover, as an n in general formula (VII) and general formula (VIII), 6 or less is more preferable on average, and as such an epoxy resin, general formula (VII) is a product made by Nippon Kayaku Co., Ltd. as a commercial product. The name NC-2000L is available as Nippon Kayaku Co., Ltd. trade name NC-3000S as a general formula (VIII).
Moreover, it is preferable to contain the epoxy resin shown by the said general formula (I) from a viewpoint of coexistence of a flame retardance, reflow resistance, and fluidity, Especially, R1-R8 of the said general formula (VIII). Is more preferably a hydrogen atom and R1 to R8 in the general formula (I) are hydrogen atoms and n = 0. In particular, the blending mass ratio is preferably (I) / (VIII) = 50/50 to 5/95, more preferably 40/60 to 10/90, and 30/70 to 15/85. Is more preferred. As a compound satisfying such a blending mass ratio, CER-3000L (trade name, manufactured by Nippon Kayaku Co., Ltd.) and the like are commercially available.

  Examples of the epoxidized naphthol / aralkyl resin include epoxy resins represented by the following general formula (IX).

（一般式（ＩＸ）中、Ｒは水素原子、炭素数１〜１２の置換又は非置換の一価の炭化水素基から選ばれ、すべてが同一でも異なっていてもよい。ｉは０又は１〜３の整数を示し、Ｘは芳香環を含む二価の有機基を示し、ｎは０又は１〜１０の整数を示す。）
Ｘは、たとえばフェニレン基、ビフェニレン基、ナフチレン基等のアリーレン基、トリレン基等のアルキル基置換アリーレン基、アルコキシル基置換アリーレン基、アラルキル基置換アリーレン基、ベンジル基、フェネチル基等のアラルキル基から得られる二価の基、キシリレン基等のアリーレン基を含む二価の基などが挙げられ、なかでも、難燃性及び保存安定性の両立の観点からはフェニレン基、ビフェニレン基が好ましい。
上記一般式（ＩＸ）で示されるナフトール・アラルキル樹脂のエポキシ化物は、アルキル置換、芳香環置換又は非置換のナフトールとジメトキシパラキシレン又はビス（メトキシメチル）ビフェニルから合成されるナフトール・アラルキル樹脂にエピクロルヒドリンを公知の方法で反応させることによって得られる。一般式（ＩＸ）中のＲとしてはたとえば、メチル基、エチル基、プロピル基、イソプロピル基、ｎ−ブチル基、ｓｅｃ−ブチル基、ｔｅｒｔ−ブチル基、ペンチル基、ヘキシル基、オクチル基、デシル基、ドデシル基等の鎖状アルキル基、シクロペンチル基、シクロヘキシル基、シクロヘプチル基、シクロペンテニル基、シクロヘキセニル基等の環状アルキル基、ベンジル基、フェネチル基等のアリール基置換アルキル基、メトキシ基置換アルキル基、エトキシ基置換アルキル基、ブトキシ基置換アルキル基等のアルコキシ基置換アルキル基、アミノアルキル基、ジメチルアミノアルキル基、ジエチルアミノアルキル基等のアミノ基置換アルキル基、水酸基置換アルキル基、フェニル基、ナフチル基、ビフェニル基等の無置換アリール基、トリル基、ジメチルフェニル基、エチルフェニル基、ブチルフェニル基、ｔｅｒｔ−ブチルフェニル基、ジメチルナフチル基等のアルキル基置換アリール基、メトキシフェニル基、エトキシフェニル基、ブトキシフェニル基、ｔｅｒｔ−ブトキシフェニル基、メトキシナフチル基等のアルコキシ基置換アリール基、ジメチルアミノ基、ジエチルアミノ基等のアミノ基置換アリール基、水酸基置換アリール基などが挙げられ、なかでも水素原子又はメチル基が好ましく、たとえば下記一般式（Ｘ）又は（ＸＩ）で示されるナフトール・アルキル樹脂のエポキシ化物が挙げられる。ｎは０又は１〜１０の整数を示し、平均で６以下がより好ましい。下記一般式（Ｘ）で示されるエポキシ樹脂としては市販品として新日鐵化学株式会社製商品名ＥＳＮ‐３７５が挙げられ、下記一般式（ＸＩ）で示されるエポキシ樹脂としては市販品として新日鐵化学株式会社製商品名ＥＳＮ‐１７５が挙げられる。上記ナフトール・アラルキル樹脂のエポキシ化物の配合量は、その性能を発揮するためにエポキシ樹脂全量中２０質量％以上とすることが好ましく、３０質量％以上がより好ましく、５０質量％以上がさらに好ましい。

(In General Formula (IX), R is selected from a hydrogen atom, a substituted or unsubstituted monovalent hydrocarbon group having 1 to 12 carbon atoms, and all may be the same or different. 3 represents an integer, X represents a divalent organic group containing an aromatic ring, and n represents 0 or an integer of 1 to 10.)
X is obtained from an aralkyl group such as an arylene group such as a phenylene group, a biphenylene group or a naphthylene group, an alkyl group-substituted arylene group such as a tolylene group, an alkoxyl group-substituted arylene group, an aralkyl group-substituted arylene group, a benzyl group or a phenethyl group. And a divalent group containing an arylene group such as a xylylene group. Among them, a phenylene group and a biphenylene group are preferable from the viewpoint of both flame retardancy and storage stability.
The epoxidized product of the naphthol / aralkyl resin represented by the general formula (IX) is obtained by adding epichlorohydrin to a naphthol / aralkyl resin synthesized from alkyl-substituted, aromatic ring-substituted or unsubstituted naphthol and dimethoxyparaxylene or bis (methoxymethyl) biphenyl. Can be obtained by a known method. Examples of R in the general formula (IX) include methyl, ethyl, propyl, isopropyl, n-butyl, sec-butyl, tert-butyl, pentyl, hexyl, octyl, and decyl. Chain alkyl groups such as dodecyl group, cyclopentyl group, cyclohexyl group, cycloheptyl group, cyclopentenyl group, cyclohexenyl group and other cyclic alkyl groups, benzyl group, phenethyl group and other aryl group substituted alkyl groups, methoxy group substituted alkyl Group, alkoxy group-substituted alkyl group such as ethoxy group-substituted alkyl group, butoxy group-substituted alkyl group, amino group-substituted alkyl group such as aminoalkyl group, dimethylaminoalkyl group, diethylaminoalkyl group, hydroxyl group-substituted alkyl group, phenyl group, naphthyl Group, unsubstituted aryl group such as biphenyl group, Alkyl group, dimethylphenyl group, ethylphenyl group, butylphenyl group, tert-butylphenyl group, dimethylnaphthyl group and other alkyl group-substituted aryl groups, methoxyphenyl group, ethoxyphenyl group, butoxyphenyl group, tert-butoxyphenyl group, Examples include an alkoxy group-substituted aryl group such as a methoxynaphthyl group, an amino group-substituted aryl group such as a dimethylamino group and a diethylamino group, and a hydroxyl group-substituted aryl group. Among them, a hydrogen atom or a methyl group is preferable. For example, the following general formula (X ) Or (XI) and an epoxidized product of a naphthol alkyl resin. n shows 0 or the integer of 1-10, and 6 or less is more preferable on average. As an epoxy resin represented by the following general formula (X), a commercial product ESN-375 manufactured by Nippon Steel Chemical Co., Ltd. may be mentioned. As an epoxy resin represented by the following general formula (XI), commercially available A trade name ESN-175 manufactured by Sakai Chemical Co., Ltd. may be mentioned. The blended amount of the epoxidized naphthol / aralkyl resin is preferably 20% by mass or more, more preferably 30% by mass or more, and still more preferably 50% by mass or more, based on the total amount of the epoxy resin in order to exhibit its performance.

（一般式（Ｘ）中、Ｘは芳香環を含む二価の有機基を示し、ｎは０又は１〜１０の整数を示す。）

(In general formula (X), X represents a divalent organic group containing an aromatic ring, and n represents 0 or an integer of 1 to 10.)

（一般式（ＸＩ）中、Ｘは芳香環を含む二価の有機基を示し、ｎは０又は１〜１０の整数を示す。）

(In general formula (XI), X represents a divalent organic group containing an aromatic ring, and n represents 0 or an integer of 1 to 10.)

  Biphenyl type epoxy resin, thiodiphenol type epoxy resin, bisphenol F type epoxy resin, novolac type epoxy resin, naphthalene type epoxy resin, triphenylmethane type epoxy resin, epoxidized phenol / aralkyl resin and naphthol / aralkyl resin The epoxidized product may be used alone or in combination of two or more, but the blending amount when using two or more in combination is 50% by mass or more in the total amount of the epoxy resin. Preferably, it is 60 mass% or more, more preferably 80 mass% or more.

The (B) curing agent used in the present invention is generally used for an epoxy resin molding material for sealing and is not particularly limited. For example, phenol, cresol, resorcin, catechol, bisphenol A, bisphenol F, phenyl Obtained by condensation or cocondensation of phenols such as phenol, thiodiphenol, aminophenol, α-naphthol, β-naphthol, and dihydroxynaphthalene with compounds having an aldehyde group such as formaldehyde, benzaldehyde, and salicylaldehyde in an acidic catalyst. Novolak-type phenol resins, phenol-aralkyl resins synthesized from phenols and dimethoxyparaxylene or bis (methoxymethyl) biphenyl, aralkyl-type phenol resins such as naphthol-aralkyl resins, phenol Copolymerized phenol-aralkyl resin, paraxylylene and / or metaxylylene-modified phenol resin, melamine-modified phenol resin, terpene-modified phenol resin, dicyclopentadiene-modified phenol resin in which arnnovolac structure and phenol-aralkyl structure are randomly, block or alternately repeated , Cyclopentadiene-modified phenolic resin, polycyclic aromatic ring-modified phenolic resin, and the like. These may be used alone or in combination of two or more.
Among these, from the viewpoint of fluidity, flame retardancy and reflow resistance, phenol / aralkyl resins, copolymerized phenol / aralkyl resins and naphthol / aralkyl resins are preferred, and from the viewpoints of heat resistance, low expansion rate and low warpage. Is preferably a triphenylmethane type phenol resin, and from the viewpoint of curability, a novolac type phenol resin is preferable, and preferably contains at least one of these phenol resins.

  Examples of the phenol / aralkyl resin include resins represented by the following general formula (XII).

（一般式（ＸＩＩ）中、Ｒは水素原子、炭素数１〜１２の置換又は非置換の一価の炭化水素基から選ばれ、すべてが同一でも異なっていてもよい。ｉは０又は１〜３の整数を示し、Ｘは芳香環を含む二価の有機基を示し、ｎは０又は１〜１０の整数を示す。）
上記一般式（ＸＩＩ）中のＲとしては、たとえば、メチル基、エチル基、プロピル基、イソプロピル基、ｎ−ブチル基、ｓｅｃ−ブチル基、ｔｅｒｔ−ブチル基、ペンチル基、ヘキシル基、オクチル基、デシル基、ドデシル基等の鎖状アルキル基、シクロペンチル基、シクロヘキシル基、シクロヘプチル基、シクロペンテニル基、シクロヘキセニル基等の環状アルキル基、ベンジル基、フェネチル基等のアリール基置換アルキル基、メトキシ基置換アルキル基、エトキシ基置換アルキル基、ブトキシ基置換アルキル基等のアルコキシ基置換アルキル基、アミノアルキル基、ジメチルアミノアルキル基、ジエチルアミノアルキル基等のアミノ基置換アルキル基、水酸基置換アルキル基、フェニル基、ナフチル基、ビフェニル基等の無置換アリール基、トリル基、ジメチルフェニル基、エチルフェニル基、ブチルフェニル基、ｔｅｒｔ−ブチルフェニル基、ジメチルナフチル基等のアルキル基置換アリール基、メトキシフェニル基、エトキシフェニル基、ブトキシフェニル基、ｔｅｒｔ−ブトキシフェニル基、メトキシナフチル基等のアルコキシ基置換アリール基、ジメチルアミノ基、ジエチルアミノ基等のアミノ基置換アリール基、水酸基置換アリール基などが挙げられ、なかでも水素原子又はメチル基が好ましい。
また、Ｘは芳香環を含む基を示し、たとえばフェニレン基、ビフェニレン基、ナフチレン基等のアリーレン基、トリレン基等のアルキル基置換アリーレン基、アルコキシル基置換アリーレン基、ベンジル基、フェネチル基等のアラルキル基から得られる二価の基、アラルキル基置換アリーレン基、キシリレン基等のアリーレン基を含む二価の基などが挙げられる。なかでも、難燃性、流動性と硬化性の両立の観点からは置換又は非置換のフェニレン基が好ましく、例えば下記一般式（ＸＩＩＩ）で示されるフェノール・アラルキル樹脂が挙げられ、難燃性と耐リフロー性の両立の観点からは置換又は非置換のビフェニレン基が好ましく、例えば下記一般式（ＸＩＶ）で示されるフェノール・アラルキル樹脂が挙げられる。ｎは０又は１〜１０の整数を示し、平均で６以下がより好ましい。

(In General Formula (XII), R is selected from a hydrogen atom, a substituted or unsubstituted monovalent hydrocarbon group having 1 to 12 carbon atoms, and all may be the same or different. 3 represents an integer, X represents a divalent organic group containing an aromatic ring, and n represents 0 or an integer of 1 to 10.)
As R in the general formula (XII), for example, methyl group, ethyl group, propyl group, isopropyl group, n-butyl group, sec-butyl group, tert-butyl group, pentyl group, hexyl group, octyl group, Decyl group, chain alkyl group such as dodecyl group, cyclopentyl group, cyclohexyl group, cycloheptyl group, cyclopentenyl group, cyclohexenyl group and other cyclic alkyl groups, benzyl group, phenethyl group and other aryl group substituted alkyl groups, methoxy group Alkoxy group substituted alkyl groups such as substituted alkyl groups, ethoxy group substituted alkyl groups, butoxy group substituted alkyl groups, amino group substituted alkyl groups such as aminoalkyl groups, dimethylaminoalkyl groups, diethylaminoalkyl groups, hydroxyl group substituted alkyl groups, phenyl groups , Unsubstituted aryl such as naphthyl group and biphenyl group Group, tolyl group, dimethylphenyl group, ethylphenyl group, butylphenyl group, tert-butylphenyl group, dimethylnaphthyl group and other alkyl group-substituted aryl groups, methoxyphenyl group, ethoxyphenyl group, butoxyphenyl group, tert-butoxyphenyl Group, an alkoxy group-substituted aryl group such as a methoxynaphthyl group, an amino group-substituted aryl group such as a dimethylamino group and a diethylamino group, and a hydroxyl group-substituted aryl group. Among them, a hydrogen atom or a methyl group is preferable.
X represents a group containing an aromatic ring, for example, an arylene group such as a phenylene group, a biphenylene group or a naphthylene group, an alkyl group-substituted arylene group such as a tolylene group, an alkoxyl group-substituted arylene group, a benzyl group or a phenethyl group. And a divalent group containing an arylene group such as a divalent group obtained from a group, an aralkyl group-substituted arylene group, and a xylylene group. Of these, a substituted or unsubstituted phenylene group is preferable from the viewpoint of both flame retardancy, fluidity and curability, and examples thereof include a phenol / aralkyl resin represented by the following general formula (XIII). From the viewpoint of achieving both reflow resistance, a substituted or unsubstituted biphenylene group is preferable, and examples thereof include a phenol-aralkyl resin represented by the following general formula (XIV). n shows 0 or the integer of 1-10, and 6 or less is more preferable on average.

（一般式（ＸＩＩＩ）中、ｎは０又は１〜１０の整数を示す。）

(In general formula (XIII), n represents 0 or an integer of 1 to 10)

（一般式（ＸＩＶ）中、ｎは０又は１〜１０の整数を示す。）
上記一般式（ＸＩＩＩ）で示されるフェノール・アラルキル樹脂としては、市販品として三井化学株式会社製商品名ＸＬＣが挙げられ、一般式（ＸＩＶ）で示されるビフェニレン骨格含有フェノール・アラルキル樹脂としては、市販品として明和化成株式会社製商品名ＭＥＨ‐７８５１が挙げられる。上記フェノール・アラルキル樹脂の配合量は、その性能を発揮するために硬化剤全量中２０質量％以上とすることが好ましく、３０質量％以上がより好ましく、５０質量％以上がさらに好ましい。

(In General Formula (XIV), n represents 0 or an integer of 1 to 10)
As the phenol / aralkyl resin represented by the general formula (XIII), a trade name XLC manufactured by Mitsui Chemicals, Inc. can be mentioned as a commercially available product, and as the biphenylene skeleton-containing phenol / aralkyl resin represented by the general formula (XIV), A product name MEH-7851 manufactured by Meiwa Kasei Co., Ltd. may be mentioned as a product. The blending amount of the phenol-aralkyl resin is preferably 20% by mass or more, more preferably 30% by mass or more, and further preferably 50% by mass or more in the total amount of the curing agent in order to exhibit its performance.

  Examples of the naphthol / aralkyl resin include resins represented by the following general formula (XV).

（一般式（ＸＶ）中、Ｒは水素原子、炭素数１〜１２の置換又は非置換の一価の炭化水素基から選ばれ、すべてが同一でも異なっていてもよい。ｉは０又は１〜３の整数を示し、Ｘは芳香環を含む二価の有機基を示し、ｎは０又は１〜１０の整数を示す。）
上記一般式（ＸＶ）中のＲとしては、たとえば、メチル基、エチル基、プロピル基、イソプロピル基、ｎ−ブチル基、ｓｅｃ−ブチル基、ｔｅｒｔ−ブチル基、ペンチル基、ヘキシル基、オクチル基、デシル基、ドデシル基等の鎖状アルキル基、シクロペンチル基、シクロヘキシル基、シクロヘプチル基、シクロペンテニル基、シクロヘキセニル基等の環状アルキル基、ベンジル基、フェネチル基等のアリール基置換アルキル基、メトキシ基置換アルキル基、エトキシ基置換アルキル基、ブトキシ基置換アルキル基等のアルコキシ基置換アルキル基、アミノアルキル基、ジメチルアミノアルキル基、ジエチルアミノアルキル基等のアミノ基置換アルキル基、水酸基置換アルキル基、フェニル基、ナフチル基、ビフェニル基等の無置換アリール基、トリル基、ジメチルフェニル基、エチルフェニル基、ブチルフェニル基、ｔｅｒｔ−ブチルフェニル基、ジメチルナフチル基等のアルキル基置換アリール基、メトキシフェニル基、エトキシフェニル基、ブトキシフェニル基、ｔｅｒｔ−ブトキシフェニル基、メトキシナフチル基等のアルコキシ基置換アリール基、ジメチルアミノ基、ジエチルアミノ基等のアミノ基置換アリール基、水酸基置換アリール基などが挙げられ、なかでも水素原子又はメチル基が好ましい。
また、Ｘは芳香環を含む二価の有機基を示し、たとえばフェニレン基、ビフェニレン基、ナフチレン基等のアリーレン基、トリレン基等のアルキル基置換アリーレン基、アルコキシル基置換アリーレン基、アラルキル基置換アリーレン基、ベンジル基、フェネチル基等のアラルキル基から得られる二価の基、キシリレン基等のアリーレン基を含む二価の基などが挙げられ、なかでも、保存安定性と難燃性の観点からは置換又は非置換のフェニレン基及びビフェニレン基が好ましく、フェニレン基がより好ましく、たとえば下記一般式（ＸＶＩ）および（ＸＶＩＩ）で示されるナフトール・アラルキル樹脂が挙げられる。ｎは０又は１〜１０の整数を示し、平均で６以下がより好ましい。

(In general formula (XV), R is selected from a hydrogen atom, a substituted or unsubstituted monovalent hydrocarbon group having 1 to 12 carbon atoms, and all may be the same or different. 3 represents an integer, X represents a divalent organic group containing an aromatic ring, and n represents 0 or an integer of 1 to 10.)
As R in the general formula (XV), for example, methyl group, ethyl group, propyl group, isopropyl group, n-butyl group, sec-butyl group, tert-butyl group, pentyl group, hexyl group, octyl group, Decyl group, chain alkyl group such as dodecyl group, cyclopentyl group, cyclohexyl group, cycloheptyl group, cyclopentenyl group, cyclohexenyl group and other cyclic alkyl groups, benzyl group, phenethyl group and other aryl group substituted alkyl groups, methoxy group Alkoxy group substituted alkyl groups such as substituted alkyl groups, ethoxy group substituted alkyl groups, butoxy group substituted alkyl groups, amino group substituted alkyl groups such as aminoalkyl groups, dimethylaminoalkyl groups, diethylaminoalkyl groups, hydroxyl group substituted alkyl groups, phenyl groups , Unsubstituted aryl such as naphthyl group and biphenyl group Alkyl group-substituted aryl groups such as tolyl group, dimethylphenyl group, ethylphenyl group, butylphenyl group, tert-butylphenyl group, dimethylnaphthyl group, methoxyphenyl group, ethoxyphenyl group, butoxyphenyl group, tert-butoxyphenyl group , An alkoxy group-substituted aryl group such as a methoxynaphthyl group, an amino group-substituted aryl group such as a dimethylamino group and a diethylamino group, and a hydroxyl group-substituted aryl group. Among them, a hydrogen atom or a methyl group is preferable.
X represents a divalent organic group containing an aromatic ring, for example, an arylene group such as a phenylene group, a biphenylene group or a naphthylene group, an alkyl group-substituted arylene group such as a tolylene group, an alkoxyl group-substituted arylene group, an aralkyl group-substituted arylene. Groups, divalent groups obtained from aralkyl groups such as benzyl groups, phenethyl groups, and the like, and divalent groups including arylene groups such as xylylene groups, among others, from the viewpoint of storage stability and flame retardancy A substituted or unsubstituted phenylene group and a biphenylene group are preferable, and a phenylene group is more preferable, and examples thereof include naphthol-aralkyl resins represented by the following general formulas (XVI) and (XVII). n shows 0 or the integer of 1-10, and 6 or less is more preferable on average.

（一般式（ＸＶＩ）中、ｎは０又は１〜１０の整数を示す。）

(In general formula (XVI), n represents 0 or an integer of 1 to 10)

（一般式（ＸＶＩＩ）中、ｎは０又は１〜１０の整数を示す。）
上記一般式（ＸＶＩ）で示されるナフトール・アラルキル樹脂としては、市販品として新日鐵化学株式会社製商品名ＳＮ‐４７５が挙げられ、上記一般式（ＸＶＩＩ）で示されるナフトール・アラルキル樹脂としては、市販品として新日鐵化学株式会社製商品名ＳＮ‐１７０が挙げられる。上記ナフトール・アラルキル樹脂の配合量は、その性能を発揮するために硬化剤全量中２０質量％以上とすることが好ましく、３０質量％以上がより好ましく、５０質量％以上がさらに好ましい。
上記一般式（ＸＩＩ）で示されるフェノール・アラルキル樹脂、一般式（ＸＶ）で示されるナフトール・アラルキル樹脂は、難燃性の観点からその一部又は全部がアセナフチレンと予備混合されていることが好ましい。アセナフチレンはアセナフテンを脱水素して得ることができるが、市販品を用いてもよい。また、アセナフチレンの代わりにアセナフチレンの重合物又はアセナフチレンと他の芳香族オレフィンとの重合物として用いることもできる。アセナフチレンの重合物又はアセナフチレンと他の芳香族オレフィンとの重合物を得る方法としては、ラジカル重合、カチオン重合、アニオン重合等が挙げられる。また、重合に際しては従来公知の触媒を用いることができるが、触媒を使用せずに熱だけで行うこともできる。この際、重合温度は８０〜１６０℃が好ましく、９０〜１５０℃がより好ましい。得られるアセナフチレンの重合物又はアセナフチレンと他の芳香族オレフィンとの重合物の軟化点は、６０〜１５０℃が好ましく、７０〜１３０℃がより好ましい。６０℃より低いと成形時の染み出しにより成形性が低下する傾向にあり、１５０℃より高いと樹脂との相溶性が低下する傾向にある。アセナフチレンと共重合させる他の芳香族オレフィンとしては、スチレン、α‐メチルスチレン、インデン、ベンゾチオフェン、ベンゾフラン、ビニルナフタレン、ビニルビフェニル又はそれらのアルキル置換体等が挙げられる。また、上記した芳香族オレフィン以外に本発明の効果に支障の無い範囲で脂肪族オレフィンを併用することもできる。脂肪族オレフィンとしては、（メタ）アクリル酸及びそれらのエステル、無水マレイン酸、無水イタコン酸、フマル酸及びそれらのエステル等が挙げられる。これら脂肪族オレフィンの使用量は重合モノマー全量中２０質量％以下が好ましく、９質量％以下がより好ましい。
硬化剤の一部又は全部とアセナフチレンとの予備混合の方法としては、硬化剤及びアセナフチレンをそれぞれ微細に粉砕し固体状態のままミキサー等で混合する方法、両成分を溶解する溶媒に均一に溶解させた後、溶媒を除去する方法、硬化剤及び／又はアセナフチレンの軟化点以上の温度で両者を溶融混合する方法等で行うことができるが、均一な混合物が得られて不純物の混入が少ない溶融混合法が好ましい。前記の方法により予備混合物（アセナフチレン変性硬化剤）が、製造される。溶融混合は、硬化剤及び／又はアセナフチレンの軟化点以上の温度であれば制限はないが、１００〜２５０℃が好ましく、１２０〜２００℃がより好ましい。また、溶融混合は両者が均一に混合すれば混合時間に制限はないが、１〜２０時間が好ましく、２〜１５時間がより好ましい。硬化剤とアセナフチレンを予備混合する場合、混合中にアセナフチレンが重合もしくは硬化剤と反応しても構わない。

(In general formula (XVII), n represents 0 or an integer of 1 to 10)
As a naphthol aralkyl resin represented by the above general formula (XVI), as a commercial product, trade name SN-475 manufactured by Nippon Steel Chemical Co., Ltd. may be mentioned. As a naphthol aralkyl resin represented by the above general formula (XVII), As a commercial product, trade name SN-170 manufactured by Nippon Steel Chemical Co., Ltd. may be mentioned. The blending amount of the naphthol / aralkyl resin is preferably 20% by mass or more, more preferably 30% by mass or more, and further preferably 50% by mass or more in the total amount of the curing agent in order to exhibit its performance.
The phenol / aralkyl resin represented by the general formula (XII) and the naphthol / aralkyl resin represented by the general formula (XV) are preferably partially or completely premixed with acenaphthylene from the viewpoint of flame retardancy. . Although acenaphthylene can be obtained by dehydrogenating acenaphthene, a commercially available product may be used. Moreover, it can also be used as a polymer of acenaphthylene or a polymer of acenaphthylene and other aromatic olefins instead of acenaphthylene. Examples of a method for obtaining a polymer of acenaphthylene or a polymer of acenaphthylene and another aromatic olefin include radical polymerization, cationic polymerization, and anionic polymerization. In the polymerization, a conventionally known catalyst can be used, but it can also be carried out only by heat without using a catalyst. At this time, the polymerization temperature is preferably 80 to 160 ° C, more preferably 90 to 150 ° C. 60-150 degreeC is preferable and, as for the softening point of the polymer of the polymer of acenaphthylene obtained or acenaphthylene and another aromatic olefin, 70-130 degreeC is more preferable. When the temperature is lower than 60 ° C., the moldability tends to decrease due to oozing during molding, and when the temperature is higher than 150 ° C., the compatibility with the resin tends to decrease. Examples of other aromatic olefins to be copolymerized with acenaphthylene include styrene, α-methylstyrene, indene, benzothiophene, benzofuran, vinylnaphthalene, vinylbiphenyl, and alkyl-substituted products thereof. In addition to the above-mentioned aromatic olefins, aliphatic olefins can be used in combination as long as the effects of the present invention are not impaired. Examples of the aliphatic olefin include (meth) acrylic acid and esters thereof, maleic anhydride, itaconic anhydride, fumaric acid and esters thereof. The use amount of these aliphatic olefins is preferably 20% by mass or less, more preferably 9% by mass or less, based on the total amount of the polymerization monomers.
As a method of premixing part or all of the curing agent with acenaphthylene, the curing agent and acenaphthylene are finely pulverized and mixed in a solid state with a mixer or the like, or both components are uniformly dissolved in a solvent that dissolves them. Then, a method of removing the solvent, a method of melting and mixing the curing agent and / or acenaphthylene at a temperature equal to or higher than the softening point of the acenaphthylene, etc. can be performed. The method is preferred. A premix (acenaphthylene-modified curing agent) is produced by the above method. Although melt mixing will not have a restriction | limiting, if it is the temperature more than the softening point of a hardening | curing agent and / or acenaphthylene, 100-250 degreeC is preferable and 120-200 degreeC is more preferable. Moreover, although melt mixing will not have a restriction | limiting in mixing time if both mix uniformly, 1 to 20 hours are preferable and 2 to 15 hours are more preferable. When the curing agent and acenaphthylene are premixed, the acenaphthylene may polymerize or react with the curing agent during mixing.

  Examples of the triphenylmethane type phenol resin include a phenol resin represented by the following general formula (XVIII).

（一般式（ＸＶＩＩＩ）中、Ｒは水素原子及び炭素数１〜１０の置換又は非置換の一価の炭化水素基から選ばれ、ｎは０〜１０の整数を示す。）
上記一般式（ＸＶＩＩＩ）中のＲとしては、たとえば、水素原子、メチル基、エチル基、プロピル基、ブチル基、イソプロピル基、ｔｅｒｔ−ブチル基等のアルキル基、ビニル基、アリル基、ブテニル基等のアルケニル基、ハロゲン化アルキル基、アミノ基置換アルキル基、メルカプト基置換アルキル基などの炭素数１〜１０の置換又は非置換の一価の炭化水素基が挙げられ、なかでもメチル基、エチル基等のアルキル基及び水素原子が好ましく、メチル基及び水素原子がより好ましい。トリフェニルメタン型フェノール樹脂を用いる場合、その配合量はその性能を発揮するために硬化剤全量中３０質量％以上とすることが好ましく、５０質量％以上がより好ましい。

(In General Formula (XVIII), R is selected from a hydrogen atom and a substituted or unsubstituted monovalent hydrocarbon group having 1 to 10 carbon atoms, and n represents an integer of 0 to 10)
Examples of R in the general formula (XVIII) include a hydrogen atom, an alkyl group such as a methyl group, an ethyl group, a propyl group, a butyl group, an isopropyl group, and a tert-butyl group, a vinyl group, an allyl group, and a butenyl group. C1-C10 substituted or unsubstituted monovalent hydrocarbon group such as alkenyl group, halogenated alkyl group, amino group-substituted alkyl group, mercapto group-substituted alkyl group, etc., among which methyl group, ethyl group Alkyl groups and hydrogen atoms such as methyl groups and hydrogen atoms are more preferable. When using a triphenylmethane type phenol resin, the blending amount is preferably 30% by mass or more, more preferably 50% by mass or more, based on the total amount of the curing agent in order to exhibit its performance.

  Examples of the novolak-type phenol resin include novolak-type phenol resins such as a phenol resin represented by the following general formula (XIX), cresol novolak resin, and the like. Among these, novolak-type phenol resins represented by the following general formula (XIX) preferable.

（一般式（ＸＩＸ）中、Ｒは水素原子及び炭素数１〜１０の置換又は非置換の一価の炭化水素基から選ばれ、ｎは０〜１０の整数を示す。）
上記一般式（ＸＩＸ）中のＲとしては、たとえば、水素原子、メチル基、エチル基、プロピル基、ブチル基、イソプロピル基、ｔｅｒｔ−ブチル基等のアルキル基、ビニル基、アリル基、ブテニル基等のアルケニル基、ハロゲン化アルキル基、アミノ基置換アルキル基、メルカプト基置換アルキル基などの炭素数１〜１０の置換又は非置換の一価の炭化水素基が挙げられ、なかでもメチル基、エチル基等のアルキル基及び水素原子が好ましく、水素原子がより好ましく、ｎの平均値が０〜８であることが好ましい。ノボラック型フェノール樹脂を用いる場合、その配合量はその性能を発揮するために硬化剤全量中３０質量％以上とすることが好ましく、５０質量％以上がより好ましい。

(In general formula (XIX), R is selected from a hydrogen atom and a substituted or unsubstituted monovalent hydrocarbon group having 1 to 10 carbon atoms, and n represents an integer of 0 to 10)
R in the general formula (XIX) is, for example, a hydrogen atom, an alkyl group such as a methyl group, an ethyl group, a propyl group, a butyl group, an isopropyl group, or a tert-butyl group, a vinyl group, an allyl group, or a butenyl group. C1-C10 substituted or unsubstituted monovalent hydrocarbon group such as alkenyl group, halogenated alkyl group, amino group-substituted alkyl group, mercapto group-substituted alkyl group, etc., among which methyl group, ethyl group Alkyl groups and hydrogen atoms such as hydrogen atoms, hydrogen atoms are more preferable, and the average value of n is preferably 0 to 8. When using a novolac type phenol resin, the blending amount is preferably 30% by mass or more, more preferably 50% by mass or more, based on the total amount of the curing agent in order to exhibit its performance.

  As a copolymerization type phenol aralkyl resin, the phenol resin shown, for example by the following general formula (XX) is mentioned.

（一般式（ＸＸ）中、Ｒは水素原子、炭素数１〜１２の置換又は非置換の一価の炭化水素基及び水酸基から選ばれ、すべてが同一でも異なっていてもよい。またＸは芳香環を含む二価の基を示す。ｎ及びｍは、０又は１〜１０の整数を示す。）
上記一般式（ＸＸ）中のＲとしては、たとえば、メチル基、エチル基、プロピル基、イソプロピル基、ｎ−ブチル基、ｓｅｃ−ブチル基、ｔｅｒｔ−ブチル基、ペンチル基、ヘキシル基、オクチル基、デシル基、ドデシル基等の鎖状アルキル基、シクロペンチル基、シクロヘキシル基、シクロヘプチル基、シクロペンテニル基、シクロヘキセニル基等の環状アルキル基、ベンジル基、フェネチル基等のアリール基置換アルキル基、メトキシ基置換アルキル基、エトキシ基置換アルキル基、ブトキシ基置換アルキル基等のアルコキシ基置換アルキル基、アミノアルキル基、ジメチルアミノアルキル基、ジエチルアミノアルキル基等のアミノ基置換アルキル基、水酸基置換アルキル基、フェニル基、ナフチル基、ビフェニル基等の無置換アリール基、トリル基、ジメチルフェニル基、エチルフェニル基、ブチルフェニル基、ｔｅｒｔ−ブチルフェニル基、ジメチルナフチル基等のアルキル基置換アリール基、メトキシフェニル基、エトキシフェニル基、ブトキシフェニル基、ｔｅｒｔ−ブトキシフェニル基、メトキシナフチル基等のアルコキシ基置換アリール基、ジメチルアミノ基、ジエチルアミノ基等のアミノ基置換アリール基、水酸基置換アリール基などが挙げられ、なかでも水素原子又はメチル基が好ましく、またｎ及びｍは０又は１〜１０の整数を示し、平均で６以下がより好ましい。
上記一般式（ＸＸ）中のＸとしては、たとえばフェニレン基、ビフェニレン基、ナフチレン基等のアリーレン基、トリレン基等のアルキル基置換アリーレン基、アルコキシル基置換アリーレン基、アラルキル基置換アリーレン基、ベンジル基、フェネチル基等のアラルキル基から得られる二価の基、キシリレン基等のアリーレン基を含む二価の基などが挙げられ、なかでも、保存安定性と難燃性の観点からは置換又は非置換のフェニレン基及びビフェニレン基が好ましい。一般式（ＸＸ）で示される化合物としては、ＨＥ−５１０（エア・ウォーター株式会社製商品名）等が市販品として入手可能である。共重合型フェノール・アラルキル樹脂を用いる場合、その配合量はその性能を発揮するために硬化剤全量中３０質量％以上とすることが好ましく、５０質量％以上がより好ましい。

(In general formula (XX), R is selected from a hydrogen atom, a substituted or unsubstituted monovalent hydrocarbon group having 1 to 12 carbon atoms, and a hydroxyl group, all of which may be the same or different. A divalent group containing a ring is shown. N and m are 0 or an integer of 1 to 10.)
As R in the general formula (XX), for example, methyl group, ethyl group, propyl group, isopropyl group, n-butyl group, sec-butyl group, tert-butyl group, pentyl group, hexyl group, octyl group, Decyl group, chain alkyl group such as dodecyl group, cyclopentyl group, cyclohexyl group, cycloheptyl group, cyclopentenyl group, cyclohexenyl group and other cyclic alkyl groups, benzyl group, phenethyl group and other aryl group substituted alkyl groups, methoxy group Alkoxy group substituted alkyl groups such as substituted alkyl groups, ethoxy group substituted alkyl groups, butoxy group substituted alkyl groups, amino group substituted alkyl groups such as aminoalkyl groups, dimethylaminoalkyl groups, diethylaminoalkyl groups, hydroxyl group substituted alkyl groups, phenyl groups , Unsubstituted aryl such as naphthyl group and biphenyl group Alkyl group-substituted aryl groups such as tolyl group, dimethylphenyl group, ethylphenyl group, butylphenyl group, tert-butylphenyl group, dimethylnaphthyl group, methoxyphenyl group, ethoxyphenyl group, butoxyphenyl group, tert-butoxyphenyl group , An alkoxy group-substituted aryl group such as a methoxynaphthyl group, an amino group-substituted aryl group such as a dimethylamino group and a diethylamino group, and a hydroxyl group-substituted aryl group. Among them, a hydrogen atom or a methyl group is preferable, and n and m are 0 or an integer of 1 to 10 is shown, and an average of 6 or less is more preferable.
X in the general formula (XX) is, for example, an arylene group such as a phenylene group, a biphenylene group or a naphthylene group, an alkyl group-substituted arylene group such as a tolylene group, an alkoxyl group-substituted arylene group, an aralkyl group-substituted arylene group, or a benzyl group. , Divalent groups obtained from an aralkyl group such as a phenethyl group, divalent groups containing an arylene group such as a xylylene group, etc., among others, substituted or unsubstituted from the viewpoint of storage stability and flame retardancy The phenylene group and biphenylene group are preferred. As the compound represented by the general formula (XX), HE-510 (trade name, manufactured by Air Water Co., Ltd.) and the like are commercially available. In the case of using a copolymeric phenol / aralkyl resin, the blending amount thereof is preferably 30% by mass or more, more preferably 50% by mass or more, based on the total amount of the curing agent in order to exhibit its performance.

  The above-mentioned phenol-aralkyl resin, naphthol-aralkyl resin, dicyclopentadiene-type phenol resin, triphenylmethane-type phenol resin, novolac-type phenol fat and copolymer-type phenol-aralkyl resin may be used alone. Two or more types may be used in combination, but the blending amount in the case of using two or more types in combination is preferably 50% by mass or more, more preferably 60% by mass or more, in the total amount of phenol resin, 80 The mass% or more is more preferable.

  (C) The benzophenone derivative having one or more phenolic hydroxyl groups in one molecule used in the present invention is one or more in an aromatic ring such as substituted or unsubstituted benzophenone, naphthyl phenyl ketone, dinaphthyl ketone, xanthone, and fluorenone. There is no particular limitation as long as the hydroxyl group is directly bonded, and one kind may be used alone, or two or more kinds may be used in combination. Specifically, o-hydroxybenzophenone, m-hydroxybenzophenone, p-hydroxybenzophenone, 2-hydroxy-4-methoxybenzophenone, 2-hydroxy-4-n-octyloxybenzophenone, 2-hydroxy-4-allyloxybenzophenone 2,4-dihydroxybenzophenone, 4,4′-dihydroxybenzophenone, 2,2′-dihydroxy-4-methoxybenzophenone, 2,2′-dihydroxy-4,4′-dimethoxybenzophenone, 2,3,4-tri Hydroxybenzophenone, 2,2 ′, 4,4′-tetrahydroxybenzophenone, 2,3,4,4′-tetrahydroxybenzophenone, 2,3,3 ′, 4,4 ′, 5-hexahydroxybenzophenone and their Positional isomers and substitutions In terms of thermal stress reduction (reduction in elastic modulus at reflow temperature), o-hydroxybenzophenone, m-hydroxybenzophenone, p-hydroxybenzophenone, 2-hydroxy-4-methoxybenzophenone, 2-hydroxy -4-octyloxybenzophenone is preferred, and from the viewpoint of further improving adhesiveness, 2,4-dihydroxybenzophenone, 4,4'-dihydroxybenzophenone, 2,2'-dihydroxy-4-methoxybenzophenone, 2,2'-dihydroxy -4,4'-dimethoxybenzophenone is preferred.

  The total amount of (C) benzophenone derivative having at least one phenolic hydroxyl group in one molecule used in the present invention is preferably 0.1% by mass or more and less than 1.0% by mass in the epoxy resin molding material for sealing. . If it is less than 0.1% by mass, the effect of the invention tends to be small, and if it exceeds 1.0% by mass, the hardness of the epoxy resin molding material for sealing tends to be greatly reduced.

  In the present invention, (A) an epoxy resin, (B) a curing agent, and (C) an equivalent ratio of a benzophenone derivative having one or more phenolic hydroxyl groups in one molecule, that is, a curing agent for the number of epoxy groups and one molecule The ratio of the number of hydroxyl groups in the benzophenone derivative having one or more phenolic hydroxyl groups (the number of hydroxyl groups in the benzophenone derivative having one or more phenolic hydroxyl groups in one molecule / the number of epoxy groups in the epoxy resin) is particularly limited. However, it is preferably set in the range of 0.5 or more and less than 2.0, and more preferably 0.6 or more and less than 1.3 in order to suppress each unreacted component. In order to obtain an epoxy resin molding material for sealing having excellent moldability, it is more preferably set in the range of 0.8 or more and less than 1.2.

The molding material of the present invention may contain (D) a silane compound. (D) Silane compounds are various silane compounds such as epoxy silane, mercapto silane, amino silane, alkyl silane, ureido silane, and vinyl silane. Examples of these are vinyltrichlorosilane, vinyltrimethoxysilane, vinyltriethoxysilane, vinyltris (β-methoxyethoxy) silane, γ-methacryloxypropyltrimethoxysilane, γ-methacryloxypropyltriethoxysilane, γ-methacryloxy. Propylmethyldimethoxysilane, γ-methacryloxypropylmethyldiethoxysilane, γ-methacryloxypropyldimethylmethoxysilane, γ-methacryloxypropyldimethylethoxysilane, γ-acryloxypropyltrimethoxysilane, γ-acryloxypropyltriethoxysilane , Β- (3,4-epoxycyclohexyl) ethyltrimethoxysilane, γ-glycidoxypropyltrimethoxysilane, γ-glycidoxypropyltriethoxysilane, γ Glycidoxypropylmethyldimethoxysilane, γ-glycidoxypropylmethyldiethoxysilane, γ-glycidoxypropyldimethylmethoxysilane, γ-glycidoxypropyldimethylethoxysilane, vinyltriacetoxysilane, γ-mercaptopropyltrimethoxy Silane, γ-mercaptopropyltriethoxysilane, bis (triethoxysilylpropyl) tetrasulfide, γ-aminopropyltrimethoxysilane, γ-aminopropyltriethoxysilane, γ- [bis (β-hydroxyethyl)] aminopropyltri Ethoxysilane, N-β- (aminoethyl) -γ-aminopropyltriethoxysilane, N- (trimethoxysilylpropyl) ethylenediamine, isocyanatepropyltrimethoxysilane, isocyanate group Pyrtriethoxysilane, methyltrimethoxysilane, methyltriethoxysilane, dimethyldimethoxysilane, dimethyldiethoxysilane, phenyltrimethoxysilane, phenyltriethoxysilane, diphenyldimethoxysilane, diphenyldiethoxysilane, diphenylsilanediol, triphenylmethoxy Silane, triphenylethoxysilane, triphenylsilanol, N-β- (N-vinylbenzylaminoethyl) -γ-aminopropyltrimethoxysilane, γ-chloropropyltrimethoxysilane, hexamethyldisilane, γ-anilinopropyltri Methoxysilane, γ-anilinopropyltriethoxysilane, 2-triethoxysilyl-N- (1,3-dimethyl-butylidene) propylamine, 3-triethoxysilyl- -(1,3-dimethyl-butylidene) propylamine, N- (3-triethoxysilylpropyl) phenylimine, 3- (3- (triethoxysilyl) propylamino) -N, N-dimethylpropionamide, N- Silane compounds such as triethoxysilylpropyl-β-alanine methyl ester, 3- (triethoxysilylpropyl) dihydro-3,5-furandion, bis (trimethoxysilyl) benzene, 1H-imidazole, 2-alkylimidazole, It is a reaction product of imidazole compounds such as 2,4-dialkylimidazole and 4-vinylimidazole and γ-glycidoxypropylalkoxysilane such as γ-glycidoxypropyltrimethoxysilane and γ-glycidoxypropyltriethoxysilane. Imidazole-based silane compounds It is. One of these may be used alone, or two or more may be used in combination.
(D) From the viewpoints of moldability and fluidity, the total amount of the silane compound is preferably 0.06% by mass or more and less than 2% by mass in the epoxy resin molding material for sealing, and is 0.1% by mass or more and 0.75% by mass. Is more preferably 0.2% by mass or more and less than 0.7% by mass. If it is less than 0.06% by mass, the fluidity tends to decrease, and if it is 2% by mass or more, molding defects such as voids tend to occur.

  A conventionally well-known coupling agent may be mix | blended with the epoxy resin molding material for sealing of this invention. For example, isopropyl triisostearoyl titanate, isopropyl tris (dioctyl pyrophosphate) titanate, isopropyl tri (N-aminoethyl-aminoethyl) titanate, tetraoctyl bis (ditridecyl phosphite) titanate, tetra (2,2-diallyloxymethyl) -1-butyl) bis (ditridecyl) phosphite titanate, bis (dioctylpyrophosphate) oxyacetate titanate, bis (dioctylpyrophosphate) ethylene titanate, isopropyltrioctanoyl titanate, isopropyldimethacrylisostearoyl titanate, isopropylisostearoyldiacrylic Titanate, isopropyl tri (dioctyl phosphate) titanate, isopropyl tricumi Examples include titanate coupling agents such as phenyl titanate and tetraisopropyl bis (dioctyl phosphite) titanate, aluminum chelates, aluminum / zirconium compounds, etc. Even if one of these is used alone, two or more are combined. It may be used. The total blending amount of these coupling agents is preferably 0.06% by mass or more and less than 42% by mass in the epoxy resin molding material for sealing from the viewpoint of moldability and adhesiveness, 0.1% by mass or more, and 0.0. It is more preferably less than 75% by mass, and further preferably 0.2% by mass or more and less than 0.7% by mass. If it is less than 0.06% by mass, the fluidity tends to decrease, and if it is 2% by mass or more, molding defects such as voids tend to occur.

  The molding material of the present invention may contain (E) a curing accelerator. The (E) curing accelerator used in the present invention is not particularly limited as it is generally used in an epoxy resin molding material for sealing. For example, 1,8-diazabicyclo [5.4.0] undecene-7,1,5-diazabicyclo [4.3.0] nonene-5,5,6-dibutylamino-1,8-diazabicyclo [5.4 .0] cycloamidine compounds such as undecene-7 and these compounds to maleic anhydride, 1,4-benzoquinone, 2,5-toluquinone, 1,4-naphthoquinone, 2,3-dimethylbenzoquinone, 2,6-dimethyl Quinones such as benzoquinone, 2,3-dimethoxy-5-methyl-1,4benzoquinone, 2,3-dimethoxy-1,4-benzoquinone, phenyl-1,4-benzoquinone, π such as diazophenylmethane, phenol resin, etc. Compound with intramolecular polarization formed by adding a compound with bond, benzyldimethylamine, triethanolamine, dimethylamine Tertiary amines such as ethanol and tris (dimethylaminomethyl) phenol and their derivatives, imidazoles such as 2-methylimidazole, 2-phenylimidazole, 2-phenyl-4-methylimidazole, 2-heptadecylimidazole and the like Derivatives, tributylphosphine, methyldiphenylphosphine, triphenylphosphine, tris (4-methylphenyl) phosphine, diphenylphosphine, phenylphosphine and other organic phosphines, and maleic anhydride, the above quinone compounds, diazophenylmethane Phosphorus compounds with intramolecular polarization formed by adding a compound having a π bond such as phenol resin, tetraphenylphosphonium tetraphenylborate, tetraphenylphosphonium ethyltrif Tetra-substituted phosphonium and tetra-substituted borates such as nylborate and tetrabutylphosphonium tetrabutylborate, tetraphenylboron salts such as 2-ethyl-4-methylimidazole and tetraphenylborate, N-methylmorpholine and tetraphenylborate, and derivatives thereof These may be used alone or in combination of two or more.

The tertiary phosphine used in the adduct of the tertiary phosphine and the quinone compound is not particularly limited, but examples thereof include dibutylphenylphosphine, butyldiphenylphosphine, ethyldiphenylphosphine, triphenylphosphine, and tris (4-methylphenyl) phosphine. , Tris (4-ethylphenyl) phosphine, tris (4-propylphenyl) phosphine, tris (4-butylphenyl) phosphine, tris (isopropylphenyl) phosphine, tris (tert-butylphenyl) phosphine, tris (2,4- Dimethylphenyl) phosphine, tris (2,6-dimethylphenyl) phosphine, tris (2,4,6-trimethylphenyl) phosphine, tris (2,6-dimethyl-4-ethoxyphenyl) phosphine, tris (4-methoxyphenyl) phosphine, tertiary phosphines are exemplified with an aryl group such as tris (4-ethoxyphenyl) phosphine, triphenylphosphine is preferable in view of moldability.
Further, the quinone compound used for the adduct of the tertiary phosphine and the quinone compound is not particularly limited, and examples thereof include o-benzoquinone, p-benzoquinone, diphenoquinone, 1,4-naphthoquinone, anthraquinone, and the like. P-benzoquinone is preferable from the viewpoint of stability or storage stability.

  Although the compounding quantity of a hardening accelerator will not be specifically limited if the hardening acceleration effect is achieved, (A) epoxy resin, (B) hardening agent, (C) phenolic hydroxyl group in 1 molecule Is preferably 0.1 parts by mass or more and less than 10 parts by mass, more preferably 0.3 parts by mass or more and less than 5 parts by mass with respect to 100 parts by mass of the total amount of benzophenone derivatives having one or more. If it is less than 0.1 parts by mass, it is difficult to cure in a short time, and if it is 10 parts by mass or more, the curing rate tends to be too fast and a good molded product tends not to be obtained.

  The molding material of the present invention may contain (F) an inorganic filler. The (F) inorganic filler used in the present invention is blended in a molding material for hygroscopicity, linear expansion coefficient reduction, thermal conductivity improvement and strength improvement, and is generally used as an epoxy resin molding material for sealing. There is no particular limitation as long as it is used, for example, fused silica, crystalline silica, alumina, zircon, calcium silicate, calcium carbonate, potassium titanate, silicon carbide, silicon nitride, aluminum nitride, boron nitride. , Beryllia, zirconia, zircon, fosterite, steatite, spinel, mullite, titania, etc., or spherical beads, glass fibers, etc. May be used. Among these, fused silica is preferable from the viewpoint of reducing the linear expansion coefficient, and alumina is preferable from the viewpoint of high thermal conductivity, and the filler shape is preferably spherical from the viewpoint of fluidity during molding and mold wear. In particular, spherical fused silica is preferable from the viewpoint of a balance between cost and performance.

  The blending amount of the inorganic filler is preferably 70% by mass or more and less than 95% by mass in the sealing epoxy resin molding material from the viewpoints of flame retardancy, moldability, hygroscopicity, reduction of linear expansion coefficient and improvement of strength. If it is less than 70% by mass, the flame retardancy tends to decrease, and if it is 95% by mass or more, the fluidity tends to be insufficient.

  Moreover, an anion exchanger can be blended with the epoxy resin molding material for sealing of the present invention, if necessary, for the purpose of improving the moisture resistance and high temperature storage characteristics of the IC. The anion exchanger is not particularly limited, and conventionally known anion exchangers can be used. Examples thereof include hydrotalcites and hydrated oxides of elements selected from magnesium, aluminum, titanium, zirconium, and bismuth. These may be used alone or in combination of two or more. Of these, hydrotalcite represented by the following composition formula (XXI) is preferable.

（組成式（ＸＸＩ）中、０＜Ｘ≦０．５、ｍは正の数）
陰イオン交換体の配合量は、ハロゲンイオンなどの陰イオンを捕捉できる十分量であれば特に限定されるものではないが、（Ａ）エポキシ樹脂１００質量部に対して、０．１質量部以上、３０質量部未満が好ましく、１質量部以上、５質量部未満がより好ましい。

(In the composition formula (XXI), 0 <X ≦ 0.5, m is a positive number)
The amount of the anion exchanger is not particularly limited as long as it is a sufficient amount capable of capturing anions such as halogen ions, but (A) 0.1 part by mass or more with respect to 100 parts by mass of the epoxy resin. , Less than 30 parts by mass, and more preferably 1 part by mass or more and less than 5 parts by mass.

  A release agent may be used in the sealing epoxy resin molding material of the present invention as necessary. As the release agent, it is preferable to use an oxidized or non-oxidized polyolefin in an amount of 0.01 parts by mass or more and less than 10 parts by mass with respect to 100 parts by mass of the (A) epoxy resin, and 0.1 parts by mass or more, 5 It is more preferable to use less than part by mass. If it is less than 0.01 part by mass, the releasability tends to be insufficient, and if it is 10 parts by mass or more, the adhesiveness tends to decrease. Examples of the oxidized or non-oxidized polyolefin include low molecular weight polyethylene having a number average molecular weight of about 500 to 10,000, such as trade name H4 manufactured by Hoechst Corporation, PE, and PED series. Other examples of the release agent include carnauba wax, montanic acid ester, montanic acid, stearic acid, and the like. These may be used alone or in combination of two or more. When these other release agents are used in addition to the oxidized or non-oxidized polyolefin, the combined amount is (A) 0.1 parts by mass or more and less than 10 parts by mass with respect to 100 parts by mass of the epoxy resin. Is preferably 0.5 parts by mass or more and less than 3 parts by mass.

  A conventionally known flame retardant can be blended in the sealing epoxy resin molding material of the present invention as required. For example, red phosphorus coated with inorganic substances such as brominated epoxy resin, antimony trioxide, red phosphorus, aluminum hydroxide, magnesium hydroxide, zinc oxide and / or thermosetting resins such as phenol resin, phosphoric acid ester, etc. Phosphorus compounds, melamine, melamine derivatives, melamine-modified phenol resins, compounds having a triazine ring, nitrogen-containing compounds such as cyanuric acid derivatives and isocyanuric acid derivatives, phosphorus and nitrogen-containing compounds such as cyclophosphazene, aluminum hydroxide, magnesium hydroxide And a composite metal hydroxide represented by the following composition formula (XXII).

（組成式（ＸＸＩＩ）で、Ｍ^１、Ｍ^２及びＭ^３は、互いに異なる金属元素を示し、ａ、ｂ、ｃ、ｄ、ｅ、ｆ、ｐ、ｑ及びｍは正の数、ｒは０又は正の数を示す。）
上記組成式（ＸＸＩＩ）中のＭ^１、Ｍ^２及びＭ^３は、互いに異なる金属元素であれば特に制限はないが、難燃性の観点からは、Ｍ^１が第３周期の金属元素、ＩＩＡ族のアルカリ土類金属元素、ＩＶＢ族、ＩＩＢ族、ＶＩＩＩ族、ＩＢ族、ＩＩＩＡ族及びＩＶＡ族に属する金属元素から選ばれ、Ｍ^２がＩＩＩＢ〜ＩＩＢ族の遷移金属元素から選ばれることが好ましく、Ｍ^１がマグネシウム、カルシウム、アルミニウム、スズ、チタン、鉄、コバルト、ニッケル、銅及び亜鉛から選ばれ、Ｍ^２が鉄、コバルト、ニッケル、銅及び亜鉛から選ばれることがより好ましい。流動性の観点からは、Ｍ^１がマグネシウム、Ｍ^２が亜鉛又はニッケルで、ｒ＝０のものが好ましい。ｐ、ｑ及びｒのモル比は特に制限はないが、ｒ＝０で、ｐ／ｑが１／９９〜１／１であることが好ましい。なお、金属元素の分類は、典型元素をＡ亜族、遷移元素をＢ亜族とする長周期型の周期律表（出典：共立出版株式会社発行「化学大辞典４」１９８７年２月１５日縮刷版第３０刷）に基づいて行った。また、酸化亜鉛、錫酸亜鉛、硼酸亜鉛、酸化鉄、酸化モリブデン、モリブデン酸亜鉛、ジシクロペンタジエニル鉄等の金属元素を含む化合物などが挙げられ、これらの１種を単独で用いても２種以上を組合せて用いてもよい。難燃剤の配合量は特に制限はないが、（Ａ）エポキシ樹脂１００質量部に対して１質量部以上、３０質量部未満が好ましく、２質量部以上、１５質量部未満がより好ましい。

(In the composition formula (XXII), M ¹ , M ² and M ³ represent different metal elements, a, b, c, d, e, f, p, q and m are positive numbers, and r is 0. Or a positive number.)
M ¹ , M ² and M ³ in the composition formula (XXII) are not particularly limited as long as they are different metal elements, but from the viewpoint of flame retardancy, M ¹ is a metal element of the third period, IIA alkaline earth metal element group, IVB group, IIB group, VIII, IB, selected from metal elements belonging to group IIIA and group IVA, it is preferable ^{that M 2} is selected from transition metal elements of group IIIB~IIB M ¹ is more preferably selected from magnesium, calcium, aluminum, tin, titanium, iron, cobalt, nickel, copper and zinc, and M ² is selected from iron, cobalt, nickel, copper and zinc. From the viewpoint of fluidity, it is preferable that M ¹ is magnesium, M ² is zinc or nickel, and r = 0. The molar ratio of p, q and r is not particularly limited, but preferably r = 0 and p / q is 1/99 to 1/1. The metal element is classified into a long-period periodic table in which the typical element is the A group and the transition element is the B group (Source: Kyoritsu Shuppan Co., Ltd., “Chemical Dictionary 4”, February 15, 1987). (Reduced plate 30th printing). Further, compounds containing metal elements such as zinc oxide, zinc stannate, zinc borate, iron oxide, molybdenum oxide, zinc molybdate, dicyclopentadienyl iron, etc. may be mentioned, and one of these may be used alone. Two or more kinds may be used in combination. Although there is no restriction | limiting in particular in the compounding quantity of a flame retardant, 1 mass part or more and less than 30 mass parts are preferable with respect to 100 mass parts of (A) epoxy resins, and 2 mass parts or more and less than 15 mass parts are more preferable.

  Moreover, you may use coloring agents, such as carbon black, an organic dye, an organic pigment, a titanium oxide, a red lead, a bengara, for the epoxy resin molding material for sealing of this invention. Furthermore, as other additives, stress relaxation agents such as silicone oil and silicone rubber powder can be blended as required.

  The epoxy resin molding material for sealing of the present invention can be prepared by any method as long as various components can be uniformly dispersed and mixed, but as a general method, components of a predetermined blending amount are mixed by a mixer or the like. A method of cooling and pulverizing after mixing sufficiently, melt-kneading with a mixing roll, an extruder or the like can be mentioned. For example, a predetermined amount of the above-described components can be uniformly stirred and mixed, and can be obtained by a method such as kneading, cooling, and pulverizing with a kneader, roll, extruder, or the like that has been heated to 70 to 140 ° C. in advance. It is easy to use if it is tableted with dimensions and mass that match the molding conditions.

As an electronic component device provided with an element sealed with an epoxy resin molding material for sealing obtained in the present invention, a semiconductor chip is mounted on a support member such as a lead frame, a wired tape carrier, a wiring board, glass, or a silicon wafer. An electronic component device equipped with active elements such as transistors, diodes and thyristors, and passive elements such as capacitors, resistors and coils, and encapsulated with the epoxy resin molding material for sealing of the present invention Etc. As such an electronic component device, for example, a semiconductor element is fixed on a lead frame, a terminal portion of a device such as a bonding pad and a lead portion are connected by wire bonding or a bump, and then the sealing epoxy resin of the present invention is used. DIP (Dual Inline Package), PLCC (Plastic Leaded Chip Carrier), QFP (Quad Flat Package), SOP (Small Outline Package), SOJ (Small Out Package), which is sealed by molding using a molding material. General resin-encapsulated ICs such as lead package (TSP), TSOP (Thin Small Outline Package), TQFP (Thin Quad Flat Package), and tape key A semiconductor chip connected to the rear by a bump is sealed with a tape carrier package (TCP) sealed with an epoxy resin molding material for sealing of the present invention, wiring formed on a wiring board or glass, wire bonding, flip chip bonding, soldering COB (Chip On Board) in which active elements such as semiconductor chips, transistors, diodes, thyristors, etc. and / or passive elements such as capacitors, resistors, coils, etc. are sealed with the sealing epoxy resin molding material of the present invention. ) After mounting the device on the surface of the module, hybrid IC, multi-chip module, organic substrate on which the wiring board connection terminal is formed on the back surface, connecting the device and the wiring formed on the organic substrate by bump or wire bonding, The device is sealed with the epoxy resin molding material for sealing of the present invention. And BGA (Ball Grid Array), CSP (Chip Size Package) and the like. Moreover, the epoxy resin molding material for sealing of the present invention can also be used effectively for printed circuit boards.
As a method for sealing an element using the epoxy resin molding material for sealing of the present invention, a low-pressure transfer molding method is the most common, but an injection molding method, a compression molding method, or the like may be used.

EXAMPLES Next, although an Example demonstrates this invention, the scope of the present invention is not limited to these Examples.
The following components are blended in parts by mass shown in Tables 1 to 6 below, roll kneading is carried out under conditions of a kneading temperature of 80 ° C. and a kneading time of 10 minutes, and sealing for Examples 1 to 24 and Comparative Examples 1 to 24 An epoxy resin molding material was produced. Note that the blank in the table indicates no blending.
(A) As an epoxy resin,
Epoxy resin 1: biphenyl type epoxy resin (trade name YX-4000, manufactured by Japan Epoxy Resin Co., Ltd.) having an epoxy equivalent of 196 and a melting point of 106 ° C.
Epoxy resin 2: epoxy equivalent 240, biphenylene skeleton-containing phenol / aralkyl type epoxy resin having a softening point of 96 ° C. (trade name CER-3000L manufactured by Nippon Kayaku Co., Ltd.),
Epoxy resin 3: Phenol aralkyl type epoxy resin having an epoxy equivalent of 238 and a softening point of 55 ° C. (trade name NC-2000L manufactured by Nippon Kayaku Co., Ltd.)
Epoxy resin 4: An ortho-cresol novolac type epoxy resin (trade name N500P-1 manufactured by Dainippon Ink and Chemicals, Inc.) having an epoxy equivalent of 200 and a softening point of 60 ° C. was used.

(B) As a curing agent,
Curing agent 1: Phenol aralkyl resin having a hydroxyl group equivalent of 175 and a softening point of 70 ° C. (trade name MEH-7800 manufactured by Meiwa Kasei Co., Ltd.),
Curing agent 2: A phenol novolak resin (trade name H-100, manufactured by Meiwa Kasei Co., Ltd.) having a hydroxyl group equivalent of 106 and a softening point of 83 ° C. was used.

(C) As a benzophenone derivative having one or more phenolic hydroxyl groups in one molecule (hereinafter referred to as hydroxybenzophenones),
Hydroxybenzophenones 1: p-hydroxybenzophenone,
Hydroxybenzophenones 2: o-hydroxybenzophenone,
Hydroxybenzophenones 3: 2-hydroxy-4-methoxybenzophenone,
Hydroxybenzophenones 4: 2,4-dihydroxybenzophenone,
Hydroxybenzophenones 5: 4,4′-dihydroxybenzophenone was used.
In addition, as a material used in place of hydroxybenzophenones in comparative examples,
Phenols 1: phenol,
Phenols 2: p-cresol,
Phenols 3: catechol,
Phenols 4: resorcinol,
Phenols 5: hydroquinone,
Benzophenones 1: benzophenone,
Benzophenones 2: p-methoxybenzophenone was used.

(D) As a silane compound,
Silane compound 1: γ-glycidoxypropyltrimethoxysilane,
(E) As a curing accelerator,
Curing accelerator 1: Betaine-type adduct of triphenylphosphine and p-benzoquinone,
(F) As an inorganic filler,
Inorganic filler 1: Spherical fused silica having an average particle diameter of 17.5 μm and a specific surface area of 3.8 m ² / g was used. As other additive components, montanic acid ester and carbon black were used.

  The epoxy resin molding materials for sealing of Examples and Comparative Examples were evaluated by the following various characteristic tests (1) to (7). The evaluation results are summarized in Tables 7 to 12 below. The epoxy resin molding material for sealing was molded by a transfer molding machine under conditions of a mold temperature of 180 ° C., a molding pressure of 6.9 MPa, and a curing time of 90 seconds unless otherwise specified. Further, post-curing was performed at 180 ° C. for 5 hours.

(1) Spiral flow Using a spiral flow measurement mold in accordance with EMMI-1-66, the sealing epoxy molding material was molded under the above conditions, and the flow distance (cm) was determined.
(2) Hardness under heat The epoxy resin molding material for sealing is molded into a disc having a diameter of 50 mm and a thickness of 3 mm under the above conditions, and immediately after molding, a Shore D hardness tester (HD-1120 manufactured by Ueshima Seisakusho Co., Ltd. (Type D )).

(3) Hardness at the time of moisture absorption at the time of moisture absorption Before molding in (2), the epoxy resin molding material for sealing is allowed to stand for 72 hours at 25 ° C. and 50% RH. Measurement was performed using HD-1120 (type D) manufactured by Ueshima Seisakusho.
(4) Water absorption rate The disk molded in (2) is post-cured under the above conditions, left for 168 hours under the conditions of 85 ° C. and 60% RH, and the mass change before and after being left is measured. %) = {(Disc mass after leaving -disc mass before leaving) / disc mass before leaving} × 100.

(5) Elastic modulus at 260 ° C (high temperature bending test)
A three-point bending test according to JIS-K-6911 was performed using a bending tester (A & D Tensilon Co., Ltd.) and maintained at 260 ° C. in a thermostatic bath. (E), bending strength (S), and elongation at break (ε) were determined. The measurement was performed under the condition of a head speed of 1.5 mm / min using a test piece obtained by molding the sealing epoxy resin molding material into 10 mm, 70 mm, and 3 mm under the above conditions.

（６）２６０℃における金属との接着力測定(シェア強度測定)
封止用エポキシ樹脂成形材料を上記条件で、銅板または銀メッキした銅板にそれぞれ底面の直径４mm、上面の直径３mm、高さ４mmのサイズに成形、後硬化し、ボンドテスター（デイジ・ジャパン株式会社製シリーズ４０００）によって、各種銅板の温度を２６０℃に保ちながら、せん断速度５０μｍ／ｓでせん断接着力を測定した。
（７）耐リフロー性
８×１０×０．４ｍｍのシリコーンチップを搭載した外形寸法２０×１４×２ｍｍの８０ピンフラットパッケージ（リードフレーム材質：銅合金、ダイパッド部上面およびリード先端部銀メッキ処理品）を、封止用エポキシ樹脂成形材料を用いて上記条件で成形、後硬化して作製し、８５℃、６０％ＲＨの条件で1週間放置後、実施例１〜１６および比較例１〜１６は２４０℃で、実施例１７〜２０および比較例１７〜２０は２３０℃で、実施例２１〜２４および比較例２１〜２４は２２０℃でリフロー処理を行い、樹脂／フレーム界面のはく離の有無を超音波探傷装置（日立建機株式会社製ＨＹＥ−ＦＯＣＵＳ）で観察し、試験パッケージ数（５）に対するはく離発生パッケージ数で評価した。

(6) Measurement of adhesive strength with metal at 260 ° C (shear strength measurement)
Bonding tester (Digi Japan Co., Ltd.) after molding the epoxy resin molding material for sealing to a copper plate or silver-plated copper plate under the above conditions with a bottom diameter of 4 mm, top diameter of 3 mm, and height of 4 mm. The shear adhesive strength was measured at a shear rate of 50 μm / s by keeping the temperature of various copper plates at 260 ° C. with a series 4000).
(7) Reflow resistance 80 x flat package with external dimensions of 20 x 14 x 2 mm mounted with 8 x 10 x 0.4 mm silicone chip (lead frame material: copper alloy, die pad top surface and lead tip silver-plated product) ) Was molded under the above conditions using an epoxy resin molding material for sealing, post-cured, and allowed to stand for 1 week at 85 ° C. and 60% RH, then Examples 1-16 and Comparative Examples 1-16 Is 240 ° C., Examples 17 to 20 and Comparative Examples 17 to 20 are 230 ° C., Examples 21 to 24 and Comparative Examples 21 to 24 are reflowed at 220 ° C., and the presence / absence of peeling at the resin / frame interface is checked. Observation was performed with an ultrasonic flaw detector (HYE-FOCUS, manufactured by Hitachi Construction Machinery Co., Ltd.), and evaluation was performed based on the number of peeling occurrence packages with respect to the number of test packages (5).

The characteristics of the above (1) to (7) are compared with examples and comparative examples with the same combination of epoxy resin and curing agent. For example, Examples 1-16 and Comparative Examples 1-16, which are combinations of Epoxy Resin 1 and 2 / Curing Agent 1, Examples 17-20 and Comparative Examples 17-, which are combinations of Epoxy Resin 1 and 3 / Curing Agent 1, 20, Examples 21-24, which are combinations of epoxy resin 1 and 4 / curing agent 2, are compared with Comparative Examples 21-24.
Tables 7-12 show that the examples to which hydroxybenzophenones were added had higher 260 ° C. shear adhesive strength (silver and copper) than the comparative examples, and the reflow after leaving for 1 week at 85 ° C. and 60% RH. In the treatment, no peeling of the resin / frame interface occurs, and the reflow resistance is excellent.
Example 5, in which the proportion of hydroxybenzophenones is less than 0.1% by weight, has a lower adhesive force than Examples 1-4 and 6-16, which are the same epoxy resin / curing agent combination, and the effect of the invention is less pronounced. In Example 23 in which the proportion of hydroxybenzophenones is 1.0% or more, the hardness is lower than Examples 21, 22, and 24, which are the same epoxy resin / curing agent combination. However, in any of the examples, no peeling of the resin / frame interface occurs.
On the other hand, a comparative example having a composition different from that of the present invention does not satisfy the object of the present invention. Compared to the examples, 260 ° C shear adhesive strength (silver and copper) is equivalent or less, and in reflow treatment after standing for 1 week at 85 ° C and 60% RH, the peeling of the resin / frame interface is in most packages. Generated and inferior in reflow resistance.

Claims (5)

(A) An epoxy resin containing two or more epoxy groups in one molecule, (B) a curing agent, (C) a benzophenone derivative having one or more phenolic hydroxyl groups in one molecule, and (F) an inorganic filler And the compounding quantity of the said inorganic filler is the epoxy resin molding material for sealing which is 70 to 95 mass% in all the components . The ratio of the benzophenone derivative which has 1 or more of phenolic hydroxyl groups in 1 molecule (C) in the epoxy resin molding material for sealing is 0.1 mass% or more and less than 1.0 mass%. Epoxy resin molding material for sealing. Furthermore, the epoxy resin molding material for sealing of Claim 1 or Claim 2 containing the (D) silane compound. Furthermore, the epoxy resin molding material for sealing in any one of Claims 1-3 containing (E) hardening accelerator. An electronic component device provided with the element sealed with the epoxy resin molding material for sealing in any one of Claims 1-4.