JP3546594B2 - Epoxy resin composition, prepreg and laminate - Google Patents

Epoxy resin composition, prepreg and laminate Download PDF

Info

Publication number
JP3546594B2
JP3546594B2 JP13392896A JP13392896A JP3546594B2 JP 3546594 B2 JP3546594 B2 JP 3546594B2 JP 13392896 A JP13392896 A JP 13392896A JP 13392896 A JP13392896 A JP 13392896A JP 3546594 B2 JP3546594 B2 JP 3546594B2
Authority
JP
Japan
Prior art keywords
epoxy resin
bisphenol
type epoxy
weight
prepreg
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
JP13392896A
Other languages
Japanese (ja)
Other versions
JPH09316301A (en
Inventor
隆 相楽
英人 三澤
明憲 日比野
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Electric Works Co Ltd
Original Assignee
Matsushita Electric Works Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Works Ltd filed Critical Matsushita Electric Works Ltd
Priority to JP13392896A priority Critical patent/JP3546594B2/en
Publication of JPH09316301A publication Critical patent/JPH09316301A/en
Application granted granted Critical
Publication of JP3546594B2 publication Critical patent/JP3546594B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00Printed circuits
    • H05K1/02Details
    • H05K1/03Use of materials for the substrate
    • H05K1/0313Organic insulating material
    • H05K1/032Organic insulating material consisting of one material
    • H05K1/0326Organic insulating material consisting of one material containing O

Landscapes

  • Reinforced Plastic Materials (AREA)
  • Laminated Bodies (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Epoxy Resins (AREA)

Description

【0001】
【発明の属する技術分野】
本発明は、プリント配線板の製造に使用されるエポキシ樹脂組成物、プリプレグ及び積層板に関するものである。
【0002】
【従来の技術】
プリント配線板の難燃性を高めるために、ブロム化ビスフェノールA型エポキシ樹脂を用いたエポキシ樹脂組成物が特開平5−51433号公報等で提供されている。例えばこのブロム化ビスフェノールA型エポキシ樹脂にフェノールノボラック型エポキシ樹脂、クレゾールノボラック型エポキシ樹脂、ビスフェノールA型ノボラックエポキシ樹脂等を配合してエポキシ樹脂組成物を調製し、このエポキシ樹脂組成物をガラス布等の基材に含浸・乾燥してプリプレグを作製することができる。そしてこのプリプレグを複数枚重ねると共にその片面あるいは両面に銅箔等の金属箔を重ね、加熱加圧成形することによって金属箔張りの積層板を製造することができる。この積層板の金属箔をエッチング加工等することによって、プリント配線板を得ることができるものである。
【0003】
【発明が解決しようとする課題】
しかし、プリント配線板の高密度化、高多層化に伴い、プリント配線板に形成される回路の微細化が大きく進んでおり、部品実装時の半田等の熱ストレスによって回路が剥離する不良発生が問題になっている。すなわち、微細な回路に剥離が生じないようするには、回路を形成する金属箔の接着が十分である必要がある、従来のレベルでは接着が不十分であって回路の剥離が発生しているのである。
【0004】
本発明は上記の点に鑑みてなされたものであり、回路との接着性に優れ、半田等の熱ストレスによる耐熱性が優れると共に、難燃性にも優れたエポキシ樹脂組成物、プリプレグ及び積層板を提供することを目的とするものである。
【0005】
【課題を解決するための手段】
本発明に係るエポキシ樹脂は、(a)平均エポキシ当量が300〜1000のビスフェノールA型エポキシ樹脂と、(b)ブロム化ビスフェノールA型エポキシ樹脂と、(c)3官能以上の多官能エポキシ樹脂と、ジシアミンジアミドとを含有し、エポキシ樹脂総量(a+b+c)に対して、(a)の平均エポキシ当量が300〜1000のビスフェノールA型エポキシ樹脂の含有量は3〜20重量%、(b)のブロム化ビスフェノールA型エポキシ樹脂の含有量は50〜94重量%、(c)の3官能以上の多官能エポキシ樹脂の含有量は3〜40重量%であることを特徴とするものである。
【0006】
また請求項2の発明は、(c)の3官能以上の多官能エポキシ樹脂として、臭素化されたものを用いることを特徴とするものである。
また請求項3の発明は、(c)の3官能以上の多官能エポキシ樹脂として、次の「化2」の化学構造式の骨格を有するものを用いることを特徴とするものである。
【0007】
【化2】

Figure 0003546594
【0008】
(式中、R,R,Rは末端がエポキシ基の分子である。)
本発明に係るプリプレグは、上記のエポキシ樹脂組成物を基材に含浸させて成ることを特徴とするものである。
本発明に係る積層板は、上記のプリプレグを積層成形して成ることを特徴とするものである。
【0009】
【発明の実施の形態】
以下、本発明の実施の形態を説明する。
(a)のビスフェノールA型エポキシ樹脂は、ビスフェノールAのグリシジルエーテルを基本骨格とするものであればよく、例えば次の「化3」の化学構造式のものを用いることができる。
【0010】
【化3】
Figure 0003546594
【0011】
このビスフェノールA型エポキシ樹脂は平均エポキシ当量が300〜1000のものを用いるものであり、従って「化3」式中、nは0〜10の整数であることが好ましい。このビスフェノールA型エポキシ樹脂のエポキシ当量が300未満であると接着性の向上の効果を十分に得ることができず、またエポキシ当量が1000を超えると硬化物のガラス転移点が下がって耐熱性が低下するために好ましくない。
【0012】
(b)のブロム化ビスフェノールA型エポキシ樹脂は、ビスフェノールAのグリシジルエーテルを基本骨格とし、ベンゼン環にブロムが付加するものであればよく、例えば次の「化4」の化学構造式のものを用いることができる。
【0013】
【化4】
Figure 0003546594
【0014】
「化4」式においてnは0〜10の整数、mは0〜10の整数である。
(c)の3官能以上の多官能エポキシ樹脂としては、「化5」のようなフェノールノボラック型エポキシ樹脂やクレゾールノボラック型エポキシ樹脂から構成されるものを用いることができる。「化5」においてR=Hのものがフェノールノボラック型エポキシ樹脂であり、R=CHのものがクレゾールノボラック型エポキシ樹脂であり、nは0〜の整数である。またこのようなノボラック型エポキシ樹脂の他に、「化6」の化学構造式を有するものを多官能エポキシ樹脂として用いることもできる。
【0015】
【化5】
Figure 0003546594
【0016】
【化6】
Figure 0003546594
【0017】
また(c)の3官能以上の多官能エポキシ樹脂としては、ブロム化したものを用いることもできる。このブロム化した多官能エポキシ樹脂としては、フェノールノボラック型エポキシ樹脂やクレゾールノボラック型エポキシ樹脂のベンゼン環にブロムを付加させた「化7」の化学構造式のものを使用することができる。「化7」においてR=Hのものがフェノールノボラック型エポキシ樹脂であり、R=CHのものがクレゾールノボラック型エポキシ樹脂である。またnは0〜10の整数である。
【0018】
【化7】
Figure 0003546594
【0019】
3官能以上のブロム化多官能エポキシ樹脂としては、このように骨格中にブロムを付加させたものの他に、骨格中にブロムを持たないフェノールノボラック型エポキシ樹脂やクレゾールノボラック型エポキシ樹脂などの多官能エポキシ樹脂をテトラブロモビスフェノールA等と反応させてブロム化することによって得られるものを用いることもできる。
【0020】
さらに、(c)の3官能以上の多官能エポキシ樹脂としては、前記の「化2」の基本骨格を有するものを用いることができる。「化2」のR,R,Rはそれぞれ末端がエポキシ基であるが、グリシジルエーテル基であることが好ましい。そして「化2」を基本骨格としてブロム化した多官能エポキシ樹脂として、R,R,Rがグリシジルエーテル基である「化2」の3官能エポキシ樹脂をテトラブロモビスフェノールAと反応させて得られるブロム化多官能エポキシ樹脂を使用することができる。このブロム化多官能エポキシ樹脂の化学構造式の一例を次の「化8」に示す。
【0021】
【化8】
Figure 0003546594
【0022】
上記の(a)の平均エポキシ当量が300〜1000のビスフェノールA型エポキシ樹脂は、(a)(b)(c)のエポキシ樹脂の総量に対して、3〜20重量%の範囲で用いるものである。この(a)のビスフェノールA型エポキシ樹脂の配合量が3重量%未満では、接着性を高める効果を十分に得ることができず、逆に(a)のビスフェノールA型エポキシ樹脂の配合量が20重量%を超えると、難燃性が低下するために好ましくない。より好ましくは5〜20重量%の範囲である。
【0023】
また(b)のブロム化ビスフェノールA型エポキシ樹脂の配合量は、(a)(b)(c)のエポキシ樹脂の総量に対して50〜94重量%の範囲が好ましく、70〜85重量%の範囲がより好ましい。さらに(c)の3官能以上の多官能エポキシ樹脂の配合量は、(a)(b)(c)のエポキシ樹脂の総量に対して3〜40重量%の範囲が好ましく、10〜20重量%の範囲がより好ましい。
【0024】
そして上記の(a)(b)(c)のエポキシ樹脂に硬化剤や硬化促進剤を配合し、さらに必要に応じて充填剤を配合することによってエポキシ樹脂組成物を調製することができるものである。
本発明では硬化剤として、接着性を向上させる効果の高いジシアンジアミド(DICY)を用いるものであり、ジシアンジアミドの配合量は1〜4PHRの範囲が好ましい。
【0025】
硬化促進剤としては特に限定するものではないが、1,8−ジアザ−ビシクロ−〔5,4,0〕ウンデセン−7、トリエチレンジアミン、ベンジルジメチルアミン等の三級アミン類、2−メチルイミダゾール(2MZ)、2−エチル−4−メチルイミダゾール、2−フェニルイミダゾール等のイミダゾール類、トリブチルホスフィン、トリフェニルホスフィン等の有機ホスフィン類、テトラフェニルホスホニウムテトラフェニルボレート、トリフェニルホスフィンテトラフェニルボレート等のテトラフェニルボロン塩等を例示することができる。また充填剤としては、アルミナ、シリカ、炭酸カルシウム、タルク、クレー、硫酸バリウム、水酸化アルミニウム等の無機質粉末充填剤や、ガラス繊維、パルプ繊維、合成繊維、セラミック繊維等の繊維質充填剤を例示することができる。
【0026】
そして上記のエポキシ樹脂組成物に溶剤を配合することによって、エポキシ樹脂ワニスを調製することができる。溶剤としては、アセトン、メチルエチルケトン(MEK)等のケトン類、ホルムアミド、N,N−ジメチルホルムアミド等のアミド類、エチレングリコールモノメチルエーテル(MC)等のエーテル類、ベンゼン、トルエン等の芳香族炭化水素類などを例示することができる。
【0027】
このように調製したエポキシ樹脂ワニスを基材に含浸して加熱乾燥することによって、プリプレグを作製することができる。基材としてはガラス繊維、アラミド繊維、ポリエステル繊維、ナイロン繊維等の繊維を使用したクロス、マット、不織布や、クラフト紙、リンター紙等の紙などを使用することができるものである。加熱乾燥の条件は130〜190℃、2〜60分程度が好ましい。プリプレグの樹脂量は、勿論限定するものではないが、30〜60重量%に調整すると、成形性や耐熱性等の良好な積層板を得ることができ好ましい。
【0028】
そして上記のように作製したプリプレグを複数枚重ね、さらに必要に応じてその片面あるいは両面に銅箔やアルミニウム、ニッケル等の金属箔を重ね、加熱加圧成形することによって、積層板を製造することができる。このときの加熱加圧の条件は、150〜190℃、1.5〜5MPa、20〜120分程度が好ましい。このようにして得られる積層板の表面の金属箔をエッチング加工等することによって、プリント配線板を作製することができるものである。
【0029】
【実施例】
次に、本発明を実施例及び比較例を挙げて説明する。
表1,2の配合で、実施例1〜4及び比較例1〜4のエポキシ樹脂組成物のワニスを調製し、ガラス布基材(旭シュエーベル社製「1550」)にこのエポキシ樹脂組成物のワニスを含浸し、150℃で8分間乾燥して、厚みが0.15mm、樹脂含有量が約50重量%のプリプレグを得た。
【0030】
ここで表1,2において、「タイプ」の(a)は平均エポキシ当量が300〜1000のビスフェノールA型エポキシ樹脂、(b)はブロム化ビスフェノールA型エポキシ樹脂と、(c)は3官能以上の多官能エポキシ樹脂を示す。また表1,2は配合量を重量部で示し、EEWは平均のエポキシ当量を示す。
また表1,2のビスフェノールA型エポキシ樹脂(1)、(2)、(3)は「化3」の化学構造式のものであり、テトラブロムビスフェノールA型エポキシ樹脂(1)、(2)は「化4」の化学構造式のものであり、フェノールノボラック型エポキシ樹脂は「化5」の化学構造式のものであり、ブロム化フェノールノボラック型エポキシ樹脂は「化7」の化学構造式のものであり、ブロム化多官能エポキシ樹脂は「化8」の化学構造式のものである。
【0031】
【表1】
Figure 0003546594
【0032】
【表2】
Figure 0003546594
【0033】
次に、このようにして得られたプリプレグを4枚重ね、その両外側に厚み35μmの銅箔を重ね、これを金属プレートで挟み、温度170℃、圧力3.9MPa、時間120分の条件で加熱加圧し、両面銅張り積層板を得た。
上記のようにして得た両面銅張り積層板を内層材とし、その両側に積層板の製造に使用したと同じプリプレグを各2枚重ねると共にさらにその外側に厚み18μmの銅箔を重ね、これを金属プレートで挟んで温度170℃、圧力3.9MPa、時間120分の条件で加熱加圧し、4層銅張り積層板を得た。
【0034】
上記のようにして得た4層銅張り積層板について、外層の18μm銅箔のピール強度、内層の35μm銅箔のピール強度、半田耐熱性、難燃性を測定した。ピール強度の測定はJIS C 6481に準拠して行なった。半田耐熱性の試験は、4層銅張り積層板の表面の銅箔をエッチングにより除去することによって試験片を作製し、この試験片を270℃の半田に30秒間浸漬して行ない、ミーズリングの発生のないものを「○」、ミーズリングの発生のあるものを「×」と評価した。難燃性はUL94規格に基づいて試験を行ない、94V−0の条件に適合するものを「○」、適合しないものを「×」と評価した。これらの結果を表3に示す。
【0035】
【表3】
Figure 0003546594
【0036】
表3にみられるように、各実施例のものは、銅箔のピール強度が高く、接着性が向上しており、また半田耐熱性が高く、熱ストレスによる耐熱性が向上しており、さらに難燃性も高いことが確認される。
一方、(a)の平均エポキシ当量が300〜1000のビスフェノールA型エポキシ樹脂を配合しない比較例1では接着性が劣り、(c)の3官能以上の多官能エポキシ樹脂を配合しない比較例2では耐熱性や難燃性が劣るものであった。また比較例3はエポキシ当量が低いビスフェノールA型エポキシ樹脂(3)を多量に配合しており、難燃性が劣化し、比較例4はビスフェノールA型エポキシ樹脂の配合量が少なく、接着性が不十分であった。
【0037】
【発明の効果】
上記のように本発明は、平均エポキシ当量が300〜1000のビスフェノールA型エポキシ樹脂と、ブロム化ビスフェノールA型エポキシ樹脂と、臭素化された3官能以上の多官能エポキシ樹脂と、ジシアミンジアミドとを含有し、エポキシ樹脂総量に対して、上記の平均エポキシ当量が300〜1000のビスフェノールA型エポキシ樹脂の含有量は3〜20重量%、ブロム化ビスフェノールA型エポキシ樹脂の含有量は50〜94重量%、3官能以上の多官能エポキシ樹脂の含有量は3〜40重量%であることを特徴とするので、ビスフェノールA型エポキシ樹脂の含有によって、金属箔との接着性を高めることができ、回路の接着性が高く半田等の熱ストレスによる耐熱性が優れたプリント配線板を製造することが可能になるものであり、しかもビスフェノールA型エポキシ樹脂として平均エポキシ当量が300〜1000のものを用いると共に含有量をエポキシ樹脂総量に対して3〜20重量%の範囲に設定しているために、難燃性や耐熱性を低下させることもないものである。[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an epoxy resin composition, a prepreg, and a laminate used for manufacturing a printed wiring board.
[0002]
[Prior art]
An epoxy resin composition using a brominated bisphenol A type epoxy resin has been provided in JP-A-5-51433 and the like in order to enhance the flame retardancy of a printed wiring board. For example, a phenol novolak type epoxy resin, a cresol novolak type epoxy resin, a bisphenol A type novolak epoxy resin, etc. are blended with the brominated bisphenol A type epoxy resin to prepare an epoxy resin composition, and the epoxy resin composition is mixed with a glass cloth or the like. The prepreg can be prepared by impregnating and drying the base material. By laminating a plurality of the prepregs, laminating a metal foil such as a copper foil on one or both sides thereof, and performing heat and pressure molding, a metal foil-clad laminate can be manufactured. The printed wiring board can be obtained by etching the metal foil of the laminated board.
[0003]
[Problems to be solved by the invention]
However, as the density of printed wiring boards has increased and the number of layers has increased, miniaturization of circuits formed on printed wiring boards has greatly advanced, and failures such as circuit peeling due to thermal stress such as soldering during component mounting have occurred. In question. That is, so as not to cause peeling fine circuit, it is necessary adhesion of the metal foil for forming the circuit is sufficient, peeling of the circuit insufficient adhesion in the conventional level is generated -ing
[0004]
The present invention has been made in view of the above points, and has excellent adhesiveness to a circuit, excellent heat resistance due to heat stress such as solder, and excellent flame retardancy, an epoxy resin composition, a prepreg, and a laminate. It is intended to provide a board.
[0005]
[Means for Solving the Problems]
The epoxy resin according to the present invention comprises (a) a bisphenol A type epoxy resin having an average epoxy equivalent of 300 to 1,000, (b) a brominated bisphenol A type epoxy resin, and (c) a trifunctional or higher polyfunctional epoxy resin. , Disiamin diamide, and based on the total amount of epoxy resin (a + b + c), the content of bisphenol A type epoxy resin having an average epoxy equivalent of (a) of 300 to 1,000 is 3 to 20% by weight, The content of the brominated bisphenol A type epoxy resin is 50 to 94% by weight, and the content of the trifunctional or higher polyfunctional epoxy resin (c) is 3 to 40% by weight .
[0006]
The invention according to claim 2 is characterized in that a brominated resin is used as the polyfunctional epoxy resin having three or more functional groups (c).
The invention of claim 3 is characterized in that a resin having a skeleton represented by the following chemical formula 2 is used as the trifunctional or higher polyfunctional epoxy resin (c).
[0007]
Embedded image
Figure 0003546594
[0008]
(In the formula, R 1 , R 2 , and R 3 are molecules having an epoxy group at the end.)
The prepreg according to the present invention is characterized in that a base material is impregnated with the above-described epoxy resin composition.
A laminate according to the present invention is characterized by being formed by laminating the above prepreg.
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described.
The bisphenol A type epoxy resin of (a) may be any one having a glycidyl ether of bisphenol A as a basic skeleton, and for example, a compound of the following chemical formula 3 can be used.
[0010]
Embedded image
Figure 0003546594
[0011]
The bisphenol A type epoxy resin has an average epoxy equivalent of 300 to 1,000. Therefore, in the formula 3, n is preferably an integer of 0 to 10. If the epoxy equivalent of this bisphenol A type epoxy resin is less than 300, the effect of improving the adhesiveness cannot be sufficiently obtained, and if the epoxy equivalent exceeds 1,000, the glass transition point of the cured product is lowered and the heat resistance is lowered. It is not preferable because it decreases.
[0012]
The brominated bisphenol A type epoxy resin of (b) may be a resin having a glycidyl ether of bisphenol A as a basic skeleton and a bromide added to a benzene ring. Can be used.
[0013]
Embedded image
Figure 0003546594
[0014]
In the formula, n is an integer of 0 to 10, and m is an integer of 0 to 10.
As the polyfunctional epoxy resin having three or more functional groups (c), a resin composed of a phenol novolak type epoxy resin or a cresol novolak type epoxy resin as shown in Chemical Formula 5 can be used. In Chemical Formula 5, R = H is a phenol novolak epoxy resin, R = CH 3 is a cresol novolak epoxy resin, and n is an integer of 0 to 5. In addition to such a novolak type epoxy resin, a resin having the chemical structural formula of Chemical Formula 6 can be used as a polyfunctional epoxy resin.
[0015]
Embedded image
Figure 0003546594
[0016]
Embedded image
Figure 0003546594
[0017]
As the trifunctional or higher polyfunctional epoxy resin (c), a brominated resin can also be used. As the brominated polyfunctional epoxy resin, those having a chemical structural formula of "Formula 7" in which bromine is added to a benzene ring of a phenol novolak epoxy resin or a cresol novolak epoxy resin can be used. In Chemical Formula 7, R = H is a phenol novolak epoxy resin, and R = CH 3 is a cresol novolak epoxy resin. N is an integer of 0 to 10.
[0018]
Embedded image
Figure 0003546594
[0019]
Examples of the brominated polyfunctional epoxy resin having three or more functional groups include, in addition to those having bromine added in the skeleton, polyfunctional resins such as phenol novolak type epoxy resin and cresol novolak type epoxy resin having no bromo in the skeleton. A resin obtained by reacting an epoxy resin with tetrabromobisphenol A or the like to form a bromide can also be used.
[0020]
Further, as the trifunctional or higher polyfunctional epoxy resin (c), those having the basic skeleton of the above “Chemical Formula 2” can be used. R 1 , R 2 , and R 3 in “Chemical Formula 2” each have an epoxy group at the terminal, but preferably a glycidyl ether group. Then, as a polyfunctional epoxy resin brominated with “Chemical Formula 2” as a basic skeleton, a trifunctional epoxy resin of “Chemical Formula 2” in which R 1 , R 2 and R 3 are glycidyl ether groups is reacted with tetrabromobisphenol A. The resulting brominated polyfunctional epoxy resin can be used. An example of the chemical structural formula of this brominated polyfunctional epoxy resin is shown in the following “Chemical formula 8”.
[0021]
Embedded image
Figure 0003546594
[0022]
The bisphenol A type epoxy resin having an average epoxy equivalent of 300 to 1000 in (a) is used in the range of 3 to 20% by weight based on the total amount of the epoxy resins (a), (b) and (c). is there. If the amount of the bisphenol A type epoxy resin (a) is less than 3% by weight, the effect of improving the adhesiveness cannot be sufficiently obtained, and conversely, the amount of the bisphenol A type epoxy resin (a) becomes 20%. If the content exceeds 10% by weight, the flame retardancy is undesirably reduced. More preferably, it is in the range of 5 to 20% by weight.
[0023]
The compounding amount of the brominated bisphenol A type epoxy resin of (b) is preferably in the range of 50 to 94% by weight, more preferably 70 to 85% by weight, based on the total amount of the epoxy resin of (a), (b) and (c). The range is more preferable. Further, the compounding amount of the trifunctional or higher polyfunctional epoxy resin (c) is preferably in the range of 3 to 40% by weight, more preferably 10 to 20% by weight, based on the total amount of the epoxy resins (a), (b) and (c). Is more preferable.
[0024]
The epoxy resin composition can be prepared by blending a curing agent or a curing accelerator with the epoxy resin (a), (b), or (c), and further blending a filler as needed. is there.
In the present invention, dicyandiamide (DICY) having a high effect of improving adhesiveness is used as a curing agent, and the compounding amount of dicyandiamide is preferably in the range of 1 to 4 PHR.
[0025]
The curing accelerator is not particularly limited, but tertiary amines such as 1,8-diaza-bicyclo- [5,4,0] undecene-7, triethylenediamine, benzyldimethylamine, and 2-methylimidazole ( 2MZ), imidazoles such as 2-ethyl-4-methylimidazole and 2-phenylimidazole; organic phosphines such as tributylphosphine and triphenylphosphine; tetraphenyl such as tetraphenylphosphonium tetraphenylborate and triphenylphosphine tetraphenylborate. Examples thereof include boron salts. Examples of the filler include inorganic powder fillers such as alumina, silica, calcium carbonate, talc, clay, barium sulfate, and aluminum hydroxide, and fibrous fillers such as glass fiber, pulp fiber, synthetic fiber, and ceramic fiber. can do.
[0026]
Then, an epoxy resin varnish can be prepared by blending a solvent with the epoxy resin composition. Examples of the solvent include ketones such as acetone and methyl ethyl ketone (MEK), amides such as formamide and N, N-dimethylformamide, ethers such as ethylene glycol monomethyl ether (MC), and aromatic hydrocarbons such as benzene and toluene. And the like.
[0027]
A prepreg can be prepared by impregnating the base material with the epoxy resin varnish prepared as described above and drying by heating. As the substrate, a cloth, mat, nonwoven fabric, or paper such as kraft paper or linter paper using fibers such as glass fiber, aramid fiber, polyester fiber, and nylon fiber can be used. The heating and drying conditions are preferably from 130 to 190 ° C. for about 2 to 60 minutes. The amount of the prepreg resin is not limited, of course, but is preferably adjusted to 30 to 60% by weight since a laminate having good moldability and heat resistance can be obtained.
[0028]
Then, by laminating a plurality of prepregs produced as described above, further laminating a metal foil such as copper foil, aluminum, nickel or the like on one or both sides thereof as needed, and heat-press molding to produce a laminated plate Can be. The heating and pressing conditions at this time are preferably 150 to 190 ° C., 1.5 to 5 MPa, and about 20 to 120 minutes. The printed wiring board can be manufactured by etching the metal foil on the surface of the laminate thus obtained.
[0029]
【Example】
Next, the present invention will be described with reference to Examples and Comparative Examples.
Varnishes of the epoxy resin compositions of Examples 1 to 4 and Comparative Examples 1 to 4 were prepared with the formulations shown in Tables 1 and 2, and the epoxy resin composition was applied to a glass cloth substrate ("1550" manufactured by Asahi Schwebel). The varnish was impregnated and dried at 150 ° C. for 8 minutes to obtain a prepreg having a thickness of 0.15 mm and a resin content of about 50% by weight.
[0030]
Here, in Tables 1 and 2, (a) of “type” is a bisphenol A type epoxy resin having an average epoxy equivalent of 300 to 1000, (b) is a brominated bisphenol A type epoxy resin, and (c) is trifunctional or more. Is shown. Tables 1 and 2 show the blending amount in parts by weight, and EEW shows the average epoxy equivalent.
Further, bisphenol A type epoxy resins (1), (2) and (3) in Tables 1 and 2 have the chemical structural formula of Chemical Formula 3, and are tetrabromobisphenol A type epoxy resins (1) and (2). Is a chemical structural formula of Chemical Formula 4, a phenol novolak type epoxy resin is of a chemical structural formula of Chemical Formula 5, and a brominated phenol novolak type epoxy resin is of a chemical structural formula of Chemical Formula 7. And the brominated polyfunctional epoxy resin has the chemical structural formula of “Formula 8”.
[0031]
[Table 1]
Figure 0003546594
[0032]
[Table 2]
Figure 0003546594
[0033]
Next, four prepregs thus obtained were stacked, and a copper foil having a thickness of 35 μm was stacked on both outer sides of the prepregs. The copper foil was sandwiched between metal plates at a temperature of 170 ° C., a pressure of 3.9 MPa, and a time of 120 minutes. Heat and pressure were applied to obtain a double-sided copper-clad laminate.
The double-sided copper-clad laminate obtained as described above was used as the inner layer material, and the same prepreg used for the production of the laminate was laminated on both sides of each of the two laminates, and a copper foil having a thickness of 18 μm was further laminated on the outside thereof. It was heated and pressed under the conditions of a temperature of 170 ° C., a pressure of 3.9 MPa, and a time of 120 minutes by sandwiching it between metal plates to obtain a four-layer copper-clad laminate.
[0034]
With respect to the four-layer copper-clad laminate obtained as described above, the peel strength of the outer 18 μm copper foil, the peel strength of the inner 35 μm copper foil, solder heat resistance, and flame retardancy were measured. The peel strength was measured in accordance with JIS C6481. A test for soldering heat resistance was performed by removing a copper foil on the surface of a four-layer copper-clad laminate by etching to prepare a test piece, immersing the test piece in 270 ° C. solder for 30 seconds, and performing a measling test. Those without generation were evaluated as “「 ”, and those with measling were evaluated as“ x ”. The flame retardancy was tested based on the UL94 standard, and those that conformed to the 94V-0 conditions were evaluated as “○”, and those that did not conform were evaluated as “x”. Table 3 shows the results.
[0035]
[Table 3]
Figure 0003546594
[0036]
As can be seen from Table 3, in each of the examples, the peel strength of the copper foil was high, the adhesiveness was improved, the solder heat resistance was high, and the heat resistance due to thermal stress was improved. It is confirmed that the flame retardancy is also high.
On the other hand, in Comparative Example 1 in which the bisphenol A type epoxy resin having an average epoxy equivalent of 300 to 1000 in (a) was not blended, the adhesiveness was poor, and in Comparative Example 2 in which (c) a trifunctional or higher polyfunctional epoxy resin was not blended, Heat resistance and flame retardancy were poor. Comparative Example 3 contains a large amount of the bisphenol A type epoxy resin (3) having a low epoxy equivalent, and the flame retardancy is deteriorated. Comparative Example 4 has a small amount of the bisphenol A type epoxy resin, and the adhesiveness is low. Was not enough.
[0037]
【The invention's effect】
As described above, the present invention provides a bisphenol A type epoxy resin having an average epoxy equivalent of 300 to 1,000, a brominated bisphenol A type epoxy resin, a brominated polyfunctional epoxy resin having three or more functionalities, and a disiamine diamide. containing, the epoxy resin amount, the content of bisphenol a type epoxy resin having an average epoxy equivalent weight of above 300 to 1000 is 3 to 20 wt%, the content of brominated bisphenol a type epoxy resin is 50 to 94 % By weight, and the content of the trifunctional or higher polyfunctional epoxy resin is 3 to 40% by weight , so that the adhesiveness to the metal foil can be enhanced by the inclusion of the bisphenol A type epoxy resin, This makes it possible to manufacture printed wiring boards with high circuit adhesiveness and excellent heat resistance due to the heat stress of solder etc. In addition, since a bisphenol A type epoxy resin having an average epoxy equivalent of 300 to 1000 is used and its content is set in a range of 3 to 20% by weight based on the total amount of the epoxy resin, flame retardancy and heat resistance are improved. It does not lower the properties.

Claims (5)

平均エポキシ当量が300〜1000のビスフェノールA型エポキシ樹脂と、ブロム化ビスフェノールA型エポキシ樹脂と、3官能以上の多官能エポキシ樹脂と、ジシアミンジアミドとを含有し、エポキシ樹脂総量に対して、上記の平均エポキシ当量が300〜1000のビスフェノールA型エポキシ樹脂の含有量は3〜20重量%、ブロム化ビスフェノールA型エポキシ樹脂の含有量は50〜94重量%、3官能以上の多官能エポキシ樹脂の含有量は3〜40重量%であることを特徴とするエポキシ樹脂組成物。Bisphenol A type epoxy resin having an average epoxy equivalent of 300 to 1,000, and brominated bisphenol A type epoxy resin, a polyfunctional epoxy resin having three or more functional contains a dicyanate Min-ji amide, the epoxy resin amount, the The content of the bisphenol A type epoxy resin having an average epoxy equivalent of 300 to 1000 is 3 to 20% by weight , and the content of the brominated bisphenol A type epoxy resin is 50 to 94% by weight. An epoxy resin composition having a content of 3 to 40% by weight . 3官能以上の多官能エポキシ樹脂として、臭素化されたものを用いることを特徴とする請求項1に記載のエポキシ樹脂組成物。The epoxy resin composition according to claim 1, wherein a brominated resin is used as the trifunctional or higher polyfunctional epoxy resin. 3官能以上の多官能エポキシ樹脂として、次の化学構造式の骨格を有するものを用いることを特徴とする請求項1又は2に記載のエポキシ樹脂組成物。
Figure 0003546594
(式中、R,R,Rは末端がエポキシ基の分子である。)
The epoxy resin composition according to claim 1, wherein a trifunctional or higher polyfunctional epoxy resin having a skeleton of the following chemical structural formula is used.
Figure 0003546594
(In the formula, R 1 , R 2 , and R 3 are molecules having an epoxy group at the end.)
請求項1乃至3のいずれかに記載のエポキシ樹脂組成物を基材に含浸させて成ることを特徴とするプリプレグ。A prepreg comprising a substrate impregnated with the epoxy resin composition according to any one of claims 1 to 3. 請求項4に記載のプリプレグを積層成形して成ることを特徴とする積層板。A laminate comprising a laminate of the prepreg according to claim 4.
JP13392896A 1996-05-28 1996-05-28 Epoxy resin composition, prepreg and laminate Expired - Fee Related JP3546594B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13392896A JP3546594B2 (en) 1996-05-28 1996-05-28 Epoxy resin composition, prepreg and laminate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13392896A JP3546594B2 (en) 1996-05-28 1996-05-28 Epoxy resin composition, prepreg and laminate

Publications (2)

Publication Number Publication Date
JPH09316301A JPH09316301A (en) 1997-12-09
JP3546594B2 true JP3546594B2 (en) 2004-07-28

Family

ID=15116363

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13392896A Expired - Fee Related JP3546594B2 (en) 1996-05-28 1996-05-28 Epoxy resin composition, prepreg and laminate

Country Status (1)

Country Link
JP (1) JP3546594B2 (en)

Also Published As

Publication number Publication date
JPH09316301A (en) 1997-12-09

Similar Documents

Publication Publication Date Title
JP3707043B2 (en) Pre-preg and laminated board for printed wiring board
JP4723865B2 (en) Flame-retardant epoxy resin composition, prepreg containing the same composition, laminate and printed wiring board
JP4968044B2 (en) Method for producing polyimide compound, thermosetting resin composition, and prepreg and laminate using the same
KR100632169B1 (en) Interlayer Insulation Adhesive For Multilayer Printed Circuit Board
JP2006193607A (en) Resin composition and prepreg therewith and laminated sheet
JP2000264986A5 (en)
TWI666248B (en) Maleimide resin composition, prepreg, laminate and printed circuit board
JP2007070418A (en) Adhesive sheet, metal foil-clad laminated sheet and built-up type multilayered printed wiring board
JP2009108144A (en) Flexible halogen-free epoxy resin composition, metallic foil with resin, cover-lay film, prepreg, laminate for printed wiring board, metal-clad flexible laminate
US20110253434A1 (en) Epoxy resin composition, and prepreg and printed circuit board using the same
JP4915549B2 (en) Resin composition for printed wiring board, prepreg and laminate using the same
JP2003231762A (en) Prepreg and laminated sheet
JP2005336287A (en) Thermosetting adhesive sheet for flexible printed wiring board, manufacturing method therefor and multilayer flexible printed wiring board and flex-rigid printed wiring board using the same
JP4770019B2 (en) Prepreg and metal foil-clad laminate
JP2005105061A (en) Resin composition, conductive foil with resin, prepreg, sheet, sheet with conductive foil, laminated plate and printed wiring board
JPH0819213B2 (en) Epoxy resin composition and copper clad laminate
JP4955856B2 (en) Phosphorus-containing epoxy resin composition, prepreg, resin-coated metal foil, adhesive sheet, laminate, multilayer board, phosphorus-containing epoxy resin varnish for coating, phosphorus-containing epoxy resin sealing material, phosphorus-containing epoxy resin casting material, phosphorus for impregnation Containing epoxy resin varnish
JP4224912B2 (en) Phosphorus-containing epoxy resin composition, prepreg using the same, metal foil with resin, adhesive sheet, laminated board and multilayer board, coating resin varnish and multilayer board using the same
JPH09143247A (en) Resin composition for laminate, prepreg and laminate
JPH0722718A (en) Epoxy resin composition for printed wiring board, manufacture of prepreg for printed wiring board, and manufacture of composite laminated sheet
JP3546594B2 (en) Epoxy resin composition, prepreg and laminate
JPH0959346A (en) Epoxy resin composition for laminate
JP2007131834A (en) Thermosetting guanamine resin, method for producing the same, thermosetting resin composition, and prepreg and laminated board using the composition
JPH0812744A (en) Resin composition and prepreg
JP2005154739A (en) Resin composition, and prepreg and laminate using the composition

Legal Events

Date Code Title Description
TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20040323

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20040405

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20080423

Year of fee payment: 4

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20090423

Year of fee payment: 5

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20090423

Year of fee payment: 5

S533 Written request for registration of change of name

Free format text: JAPANESE INTERMEDIATE CODE: R313533

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20090423

Year of fee payment: 5

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20100423

Year of fee payment: 6

LAPS Cancellation because of no payment of annual fees