JPH03269910A - Substrate for high-frequency circuit - Google Patents

Substrate for high-frequency circuit

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Publication number
JPH03269910A
JPH03269910A JP6689390A JP6689390A JPH03269910A JP H03269910 A JPH03269910 A JP H03269910A JP 6689390 A JP6689390 A JP 6689390A JP 6689390 A JP6689390 A JP 6689390A JP H03269910 A JPH03269910 A JP H03269910A
Authority
JP
Japan
Prior art keywords
resin
mica
substrate
polyphenylene ether
resin composition
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.)
Granted
Application number
JP6689390A
Other languages
Japanese (ja)
Other versions
JP2969745B2 (en
Inventor
Michio Oba
大場 道雄
Yoshiro Hashimoto
橋本 善郎
Shiyuusuke Kanjiyou
秀典 貫定
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.)
Mitsubishi Gas Chemical Co Inc
Original Assignee
Mitsubishi Gas Chemical Co Inc
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Filing date
Publication date
Application filed by Mitsubishi Gas Chemical Co Inc filed Critical Mitsubishi Gas Chemical Co Inc
Priority to JP6689390A priority Critical patent/JP2969745B2/en
Publication of JPH03269910A publication Critical patent/JPH03269910A/en
Application granted granted Critical
Publication of JP2969745B2 publication Critical patent/JP2969745B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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  • Compositions Of Macromolecular Compounds (AREA)

Abstract

PURPOSE:To obtain a substrate for a high frequency circuit having excellent dimensional stability and a remarkable low dielectric dissipation factor by using a resin composition including a polyphenylene ether resin, a polystylene resin and mica. CONSTITUTION:A substrate for a high-frequency circuit has an insulator layer made of a resin composition including a polyphenylene ether resin, a polystylene resin and mica, or a resin composition incorporating a polystylene resin and mica. In the case of using a polyphenylene ether resin and a polystylene resin, a ratio of both resins incorporated in the resin composition may be arbitrary while an incorporation amount of mica incorporated in the resin composition is preferable within a range of 10-70wt.%. With this composition, a dielectric dissipation factor in 10GHz can be reduced down to a remarkable low level of 0.0020 or less, and the substrate with excellent dimensional stability can be manufactured at a low cost.

Description

【発明の詳細な説明】 し産業上の利用分野] 本発明は、衛星放送受信平面アンテナ用基板等に好適な
高周波回路用基板に関する。
DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a high frequency circuit board suitable for a satellite broadcast receiving flat antenna board and the like.

〔従来の技術および問題点〕[Conventional technology and problems]

衛星放送受信平面アンテナ用基板のようなマイクロ波帯
域で用いられる高周波回路用基板では、基板材料の誘電
正接か大きいと信号の伝送ロスも大きくなることから、
誘電正接が小さく、かつ寸法安定性の優れた材料が要求
される。そこで、これらの用途には、従来、誘電特性に
優れたフン素樹脂やポリオレフィンを素材とし、寸法安
定性を改良した基板が用いられてきた。しかしながら、
これらは極めて高価なものであることから民生用アンテ
ナ基板に適用するのは難しく、誘電特性;よ劣るが寸法
安定性に優れたPETフィルム基板を採用せざるを得な
い場合も多かった。また、その他の基板として特開昭6
2−121758号公報に見られるようにポリフェニレ
ンエーテル樹脂に架橋性ポリマー、架橋性モノマーおよ
び無機充填剤を加えて硬化させた積層板を用いる試みも
あるが、誘電特性が不十分で、10GHz以上の周波数
には適用し難いことおよび硬化性樹脂であることから製
造法が限定され、高価なものになってしまうこと等の問
題があった。
For high-frequency circuit boards used in the microwave band, such as boards for satellite broadcast receiving flat antennas, if the dielectric loss tangent of the board material is large, the signal transmission loss will also be large.
Materials with low dielectric loss tangent and excellent dimensional stability are required. Therefore, in the past, substrates made of fluorine resins or polyolefins with excellent dielectric properties and with improved dimensional stability have been used for these applications. however,
Since these are extremely expensive, it is difficult to apply them to consumer antenna substrates, and it is often necessary to use PET film substrates, which have poor dielectric properties but excellent dimensional stability. In addition, as other substrates, JP-A-6
As seen in Japanese Patent No. 2-121758, there has been an attempt to use a laminate made by adding a crosslinkable polymer, a crosslinkable monomer, and an inorganic filler to polyphenylene ether resin and curing it, but the dielectric properties were insufficient and the There are problems in that it is difficult to apply to high frequencies, and because it is a curable resin, manufacturing methods are limited and the product becomes expensive.

こうした点から、低誘電正接、高寸法安定性を満足し、
かつ低価格な高周波回路用基板が強く求められていた。
From these points, it satisfies low dielectric loss tangent and high dimensional stability.
There was a strong demand for low-cost high-frequency circuit boards.

[問題点を解決するための手段] 本発明者らは、上記問題点を解決する目的で、ポリスチ
レン系樹脂またはポリフェニレンエーテル樹脂およびポ
リスチレン系樹脂からなる樹脂が誘電特性、寸法安定性
等に優れた特性を有することに着目し、これらの誘電特
性を損なわずにさらに寸法安定性を基板として使用可能
なレヘルに向上させるため鋭意検討した結果、これらの
樹脂に特定範囲の配合量でマイカを充填することにより
、高周波回路用基板材料として極めて好適な特性が得ら
れることを見いだし、これに従って本発明を完成した。
[Means for Solving the Problems] In order to solve the above problems, the present inventors have discovered that a resin made of polystyrene resin, polyphenylene ether resin, and polystyrene resin has excellent dielectric properties, dimensional stability, etc. As a result of intensive study to improve the dimensional stability to a level that can be used as a substrate without impairing these dielectric properties, we filled these resins with mica in a specific range of blending amounts. It was discovered that by doing so, extremely suitable characteristics as a substrate material for high frequency circuits could be obtained, and the present invention was completed based on this finding.

すなわち本発明は、(Aノボリフエニレンエーテル樹脂
および(B)ポリスチレン系樹脂および(C)マイカか
らなる樹脂組成物もしくは(B)ポリスチレン系樹脂お
よび(C)マイカからなる樹脂組成物を用いた絶縁層を
有する高周波回路用基板である。ポリフェニレンエーテ
ル樹脂およびポリスチレン系樹脂を使用する場合は樹脂
組成としては(A)ポリフェニレンエーテル樹脂と(B
)ポリスチレン系樹脂との比率は任意でよいが、樹脂組
成物中のマイカの配合量は10〜70重量%の範囲であ
ることが好ましい。組成を上記範囲から選ぶことにより
、10GHzにおける誘電正接が0.0020以下と極
めて低く、寸法安定性に優れ、かつ低コストな基板が得
られる。以下に本発明についてさらに詳しく説明する。
That is, the present invention provides an insulation using a resin composition consisting of (A novolifenylene ether resin and (B) a polystyrene resin and (C) mica, or a resin composition consisting of (B) a polystyrene resin and (C) mica). This is a high frequency circuit board having a layer.When polyphenylene ether resin and polystyrene resin are used, the resin composition is (A) polyphenylene ether resin and (B).
) Although the ratio of mica to the polystyrene resin may be arbitrary, it is preferable that the amount of mica blended in the resin composition is in the range of 10 to 70% by weight. By selecting the composition from the above range, a substrate with an extremely low dielectric loss tangent of 0.0020 or less at 10 GHz, excellent dimensional stability, and low cost can be obtained. The present invention will be explained in more detail below.

本発明に用いられるポリフェニレンエーテル樹脂とは、
それ自体公知のものであり、次の一般式(■)で表され
る構造単位を骨格に持つ重合体の総称であって、前記構
造単位の一種のみからなる単独重合体であっても、二種
以上が組み合わされた共重合体であってもよい。
The polyphenylene ether resin used in the present invention is
It is known per se, and is a general term for polymers having a structural unit represented by the following general formula (■) in its skeleton, and even if it is a homopolymer consisting of only one type of the above structural unit, It may also be a copolymer in which more than one species is combined.

(ここにR,およびR2は低級アルキル基、R3は水素
または低級アルキル基を表わす)本発明に好適なポリフ
ェニレンエーテル樹脂としては、ポリ(2,6−シメチ
ルー1.4−フェニレン)エーテルおよび2,6−シメ
チルフエノールと23.6−1リメチルフエノールとの
ランダム共重合体が例示される。また、これらのポリフ
ェニレンエーテル樹脂を、分子中にエチレン性不飽和二
重結合とカルボキシル基、酸無水物基、あるいはグリシ
ジル基とを有する変性剤で変性した樹脂も、金属箔との
接着性を増大する効果を有することから、好ましいもの
である。
(Here, R and R2 represent a lower alkyl group, and R3 represents hydrogen or a lower alkyl group.) Polyphenylene ether resins suitable for the present invention include poly(2,6-dimethyl-1,4-phenylene) ether and 2, A random copolymer of 6-dimethylphenol and 23.6-1-limethylphenol is exemplified. In addition, resins modified by modifying these polyphenylene ether resins with a modifier that has an ethylenically unsaturated double bond and a carboxyl group, an acid anhydride group, or a glycidyl group in the molecule also increase adhesion to metal foil. This is preferable because it has the effect of

本発明で用いるポリスチレン系樹脂もそれ自体公知のも
のであり、次の一般式(II)で示される繰り返し構造
単位をその重合体中に25重量%以上有するスチレン系
重合体を指す。
The polystyrene resin used in the present invention is also known per se, and refers to a styrene polymer having 25% by weight or more of repeating structural units represented by the following general formula (II).

(ここにR1は水素または低級アルキル基、Zはハロゲ
ンまたは低級アルキル基を示し、pは0または1〜3の
整数である) 特に好ましいポリスチレン系樹脂としては、スチレン単
独重合体が挙げられる。
(R1 here represents hydrogen or a lower alkyl group, Z represents a halogen or a lower alkyl group, and p is 0 or an integer of 1 to 3.) Particularly preferred polystyrene resins include styrene homopolymers.

本発明ではこれらのポリフェニレンエーテル樹脂および
ポリスチレン系樹脂とマイカもしくはポリスチレン系樹
脂単独とマイカとの樹脂組成物が使用し得る。ポリフェ
ニレンエーテル樹脂およびポリスチレン系樹脂を使用す
る場合はポリフェニレンエーテル樹脂とポリスチレン系
樹脂との配合比については特に制約はないがポリフェニ
レンエテル樹脂の比率が大きすぎると成形性が悪くなり
、また逆に小さすぎる場合には、耐熱温度が低くなると
ともに脆くなる傾向がある。そこで、−Cに好ましい配
合比としては重量で9:1〜1;9、より好ましくは7
:3〜3ニアの範囲であることが望ましい。
In the present invention, resin compositions of these polyphenylene ether resins, polystyrene resins, and mica, or polystyrene resins alone and mica can be used. When using polyphenylene ether resin and polystyrene resin, there are no particular restrictions on the blending ratio of polyphenylene ether resin and polystyrene resin, but if the ratio of polyphenylene ether resin is too large, moldability will deteriorate, and conversely, if it is too small. In some cases, the heat resistance temperature tends to decrease and the material tends to become brittle. Therefore, the preferred blending ratio for -C is 9:1 to 1:9, more preferably 7:1 to 1:9 by weight.
: Desirably in the range of 3 to 3 near.

然しながら、耐熱性や脆さを問題にしない場合には、ポ
リスチレン系樹脂の方がポリフェニレンエーテル樹脂と
比較して誘電特性が優れているためポリスチレン系樹脂
単独にマイカを配合すると最も好ましい特性を得ること
ができる。また、本発明で充填材として用いるマイカの
種類としては、特に限定されないが、天然白雲母、天然
金雲母、合成金雲母、合成カリ四ケイ素雲母等が好まし
いものとして例示される。マイカの粒度、厚み、および
アスペクト比についても、特に限定されないが、基板の
寸法安定性を高めるためには、アスペクト比が10以上
、より好ましくは15以上であることが望ましい。これ
らのマイカは、高周波帯域における誘電正接が極めて小
さいことから、誘電正接の小さい樹脂に配合した場合の
特性低下は最小限に抑えることができる。また寸法安定
性の向上効果も著しく、しかも繊維状充填材を配合した
場合に見られるような異方性を生しない点で極めて優れ
ている。
However, if heat resistance and brittleness are not an issue, polystyrene resin has better dielectric properties than polyphenylene ether resin, so adding mica to polystyrene resin alone will yield the most favorable properties. I can do it. Further, the type of mica used as a filler in the present invention is not particularly limited, but preferred examples include natural muscovite, natural phlogopite, synthetic phlogopite, and synthetic potassium tetrasilicon mica. The particle size, thickness, and aspect ratio of mica are also not particularly limited, but in order to improve the dimensional stability of the substrate, it is desirable that the aspect ratio be 10 or more, more preferably 15 or more. Since these micas have extremely small dielectric loss tangents in high frequency bands, deterioration in characteristics when blended with resins having small dielectric loss tangents can be minimized. Furthermore, the effect of improving dimensional stability is remarkable, and it is also extremely excellent in that it does not cause anisotropy as seen when fibrous fillers are blended.

マイカの好ましい配合量としては、樹脂組成物中のマイ
カの含有率が10〜70重量%、より好ましくは15〜
50重景%の範囲であることが望ましく、70重量%を
越えると基板を成形することが困難となり、また10重
量%未満では寸法安定性が不十分となる。 本発明の樹
脂m酸物中には、これらの収骨のほかにさらに、他の樹
脂、エラストマー、ゴム、抗酸化剤や難燃剤等の添加剤
、および無機充填材を本発明の趣旨を損なわない範囲で
添加できる。
The preferred blending amount of mica is such that the content of mica in the resin composition is 10 to 70% by weight, more preferably 15 to 70% by weight.
It is desirable that the content be in the range of 50% by weight; if it exceeds 70% by weight, it will be difficult to mold the substrate, and if it is less than 10% by weight, the dimensional stability will be insufficient. In addition to these components, the resin m-acid of the present invention may contain other resins, elastomers, rubbers, additives such as antioxidants and flame retardants, and inorganic fillers that would impair the purpose of the present invention. It can be added within the range.

上記樹脂m放物を用いて基板を成形する方法としては、
押出成形、射出成形、プレス、キャスティング等の各種
の方法が適用可能である。
As a method of molding a substrate using the resin m paraboloid,
Various methods such as extrusion molding, injection molding, pressing, and casting are applicable.

また、基板上に金属層を形成する方法については、銅箔
、アルミ箔等の金属箔を熱融着もしくは接着剤を用いて
張合わせる方法が最も好ましいが、金属メツキや蒸着等
の方法も用い得る。
Regarding the method of forming a metal layer on the substrate, the most preferable method is to bond metal foil such as copper foil or aluminum foil using heat fusion or adhesive, but methods such as metal plating and vapor deposition may also be used. obtain.

〔実施例〕〔Example〕

発明明番こよる高周波回路用基板について、以下実施例
および比較例によって更に詳細に説明する実施例 1 25°C、クロロホルム中で測定した固有粘度が0.4
7dl/gのポリ(2,6−シメチルー14−フェニレ
ン)エーテル樹脂 25部、ポリスチレン樹脂(三菱モ
ンサント化或社製ダイヤレックスHH−102)25部
、および天然白雲母(クラレ社製300W)50部を混
合した後、軸押出機を用いて290°Cで溶融7昆練し
、ペレット化した。
The high-frequency circuit board according to the invention will be described in more detail below with reference to Examples and Comparative Examples.Example 1: The intrinsic viscosity measured in chloroform at 25°C is 0.4.
25 parts of 7 dl/g poly(2,6-dimethyl-14-phenylene) ether resin, 25 parts of polystyrene resin (Dialex HH-102 manufactured by Mitsubishi Monsanto Chemical Co., Ltd.), and 50 parts of natural muscovite (300W manufactured by Kuraray Co., Ltd.) After mixing, the mixture was melted and kneaded at 290°C using a shaft extruder to form pellets.

上記ヘレットを用いて、260°C110k g / 
cm2の圧力で30分間プレスし、300mm角、厚さ
1mmのシートを得た。
Using the above Hellet, 260°C 110kg/
It was pressed for 30 minutes at a pressure of cm2 to obtain a sheet 300 mm square and 1 mm thick.

次いで、このシートの両面に厚さ35μmの圧延銅箔を
重ね、220″C,10k g/cmzの圧力で30分
間プレスすることにまり熱融着し、両面銅張シートを得
た。
Next, rolled copper foil with a thickness of 35 μm was layered on both sides of this sheet, and heat-sealed by pressing at 220″C and a pressure of 10 kg/cmz for 30 minutes to obtain a double-sided copper-clad sheet.

このシートの熱膨張係数、誘電率および誘電正接の測定
結果を表tcこ示した。
The measurement results of the thermal expansion coefficient, dielectric constant and dielectric loss tangent of this sheet are shown in Table tc.

実施例2〜5 実施例1に示したポリフェニレンエーテル樹脂、ポリス
チレン樹脂および天然白雲母を用いて、表1に示される
組成で同様にして両面銅張シートを得た。これらのシー
トの熱膨張係数、誘電率および誘電正接の測定結果を表
1に示した。
Examples 2 to 5 Double-sided copper-clad sheets were similarly obtained using the polyphenylene ether resin, polystyrene resin, and natural muscovite shown in Example 1 and having the compositions shown in Table 1. Table 1 shows the measurement results of the thermal expansion coefficient, dielectric constant, and dielectric loss tangent of these sheets.

実施例6〜8 実施例1における天然白雲母の代わりに、下記に示され
るマイカ50部をそれぞれ用いた以外はすべて実施例1
と同様↓こして、両面銅張シートを得た。
Examples 6 to 8 All the same as Example 1 except that 50 parts of the mica shown below was used in place of the natural muscovite in Example 1.
A double-sided copper-clad sheet was obtained by straining in the same manner as ↓.

実施例6 天然金雲母 クラレ社製200KI実施例7
 合成金雲母 トビ−工業社製PDM−325 実施例8 合成カリ四ケイ素雲母 トビ−工業社製PD
M−K (G)−325 これらのシートの熱膨張係数、誘電率および誘電正接の
測定結果を表1に示した。
Example 6 Natural phlogopite 200KI manufactured by Kuraray Example 7
Synthetic phlogopite PDM-325 manufactured by Tobi Industries Co., Ltd. Example 8 Synthetic potassium tetrasilicon mica PD manufactured by Tobi Industries Co., Ltd.
M-K (G)-325 Table 1 shows the measurement results of the thermal expansion coefficient, dielectric constant, and dielectric loss tangent of these sheets.

比較例1 実施例1に示したポリフェニレンエーテル樹脂50部、
ポリスチレン樹脂50部を用いて、同様にしてマイカを
含まない両面銅張シートを得た。
Comparative Example 1 50 parts of the polyphenylene ether resin shown in Example 1,
A mica-free double-sided copper-clad sheet was obtained in the same manner using 50 parts of polystyrene resin.

このシートの熱膨張係数、誘電率および誘電正接の測定
結果を表1に示した。
Table 1 shows the measurement results of the thermal expansion coefficient, dielectric constant, and dielectric loss tangent of this sheet.

実施例 9 実施例1に示したポリスチレン樹脂70部および天然白
雲母30部を用いて、二軸押出機による溶融混練温度を
230°C1およびシート作製時のプレス温度を220
°Cとした以外はすべて実施例1と同様にして両面銅張
シートを得た。
Example 9 Using 70 parts of the polystyrene resin and 30 parts of natural muscovite shown in Example 1, the melt-kneading temperature using a twin-screw extruder was set to 230°C1, and the pressing temperature during sheet production was set to 220°C.
A double-sided copper-clad sheet was obtained in the same manner as in Example 1 except that the temperature was changed to °C.

このシートの誘電率、誘電正接および熱膨張係数の測定
結果を表1に示した。
Table 1 shows the measurement results of the dielectric constant, dielectric loss tangent, and thermal expansion coefficient of this sheet.

比較例 2 実施例1に示したポリスチレン樹脂を用いて二軸押出機
による溶融混練を省略した以外はすべて実施例9と同様
にして両面銅張シートを得た。
Comparative Example 2 A double-sided copper-clad sheet was obtained in the same manner as in Example 9 except that the polystyrene resin shown in Example 1 was used and the melt-kneading using the twin-screw extruder was omitted.

このシートの誘電率、誘電正接および熱膨張係数の測定
結果を表1に示した。
Table 1 shows the measurement results of the dielectric constant, dielectric loss tangent, and thermal expansion coefficient of this sheet.

[発明の効果] 実施例1〜9、および比較例1〜2から明らかなように
、本発明のポリフェニレンエーテル樹脂およびポリスチ
レン系樹脂およびマイカからなる樹脂組成物もしくはポ
リスチレン系樹脂およびマイカからなる樹脂組成物を用
いた基板は、寸法安定性に優れ、かつ10GHzにおけ
る誘電正接もマイカを含まない組成物を僅かに上回る程
度で、0.0020以下の極めて小さい値であり、高周
波回路用基板、特に衛星放送用平面アンテナ、移動体通
信用平面アンテナ等の基板として好適なものである。
[Effects of the Invention] As is clear from Examples 1 to 9 and Comparative Examples 1 to 2, a resin composition comprising the polyphenylene ether resin of the present invention, a polystyrene resin, and mica, or a resin composition comprising a polystyrene resin and mica The substrate using Mica has excellent dimensional stability, and the dielectric loss tangent at 10 GHz is only slightly higher than that of a composition that does not contain mica, which is an extremely small value of 0.0020 or less. It is suitable as a substrate for a flat antenna for broadcasting, a flat antenna for mobile communications, etc.

表1 76Table 1 76

Claims (3)

【特許請求の範囲】[Claims] (1)(A)ポリフェニレンエーテル樹脂および(B)
ポリスチレン系樹脂および(C)マイカからなる樹脂組
成物もしくは(B)ポリスチレン系樹脂および(C)マ
イカからなる樹脂組成物を用いた絶縁層を有する高周波
回路用基板。
(1) (A) polyphenylene ether resin and (B)
A high frequency circuit board having an insulating layer using a resin composition comprising a polystyrene resin and (C) mica, or a resin composition comprising (B) a polystyrene resin and (C) mica.
(2)樹脂組成物中のマイカの配合量が10〜70重量
%の範囲である請求項1記載の高周波回路用基板。
(2) The high frequency circuit board according to claim 1, wherein the amount of mica blended in the resin composition is in the range of 10 to 70% by weight.
(3)基板の10GHzにおける誘電正接が0.002
0以下である請求項1記載の高周波回路用基板。
(3) The dielectric loss tangent of the substrate at 10GHz is 0.002
2. The high-frequency circuit board according to claim 1, wherein the amount of the high-frequency circuit board is 0 or less.
JP6689390A 1990-03-19 1990-03-19 High frequency circuit board Expired - Lifetime JP2969745B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6689390A JP2969745B2 (en) 1990-03-19 1990-03-19 High frequency circuit board

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6689390A JP2969745B2 (en) 1990-03-19 1990-03-19 High frequency circuit board

Publications (2)

Publication Number Publication Date
JPH03269910A true JPH03269910A (en) 1991-12-02
JP2969745B2 JP2969745B2 (en) 1999-11-02

Family

ID=13329053

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6689390A Expired - Lifetime JP2969745B2 (en) 1990-03-19 1990-03-19 High frequency circuit board

Country Status (1)

Country Link
JP (1) JP2969745B2 (en)

Also Published As

Publication number Publication date
JP2969745B2 (en) 1999-11-02

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