JPH07304868A - Polyimide - Google Patents

Polyimide

Info

Publication number
JPH07304868A
JPH07304868A JP11961094A JP11961094A JPH07304868A JP H07304868 A JPH07304868 A JP H07304868A JP 11961094 A JP11961094 A JP 11961094A JP 11961094 A JP11961094 A JP 11961094A JP H07304868 A JPH07304868 A JP H07304868A
Authority
JP
Japan
Prior art keywords
polyimide
carbon atoms
halogenated
branched
group
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.)
Pending
Application number
JP11961094A
Other languages
Japanese (ja)
Inventor
Toshihiko Matsumoto
利彦 松本
Jiyuichi Kurosaki
壽一 黒埼
Toshinobu Ono
敏信 大野
Ikuzo Nishiguchi
郁三 西口
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.)
Maruzen Petrochemical Co Ltd
Osaka City
Original Assignee
Maruzen Petrochemical Co Ltd
Osaka City
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 Maruzen Petrochemical Co Ltd, Osaka City filed Critical Maruzen Petrochemical Co Ltd
Priority to JP11961094A priority Critical patent/JPH07304868A/en
Publication of JPH07304868A publication Critical patent/JPH07304868A/en
Pending legal-status Critical Current

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  • Macromolecular Compounds Obtained By Forming Nitrogen-Containing Linkages In General (AREA)

Abstract

PURPOSE:To obtain a polyimide, having a specific recurring unit, preparable from a polyamic acid which is a prepolymer having a specified relative intrinsic viscosity, excellent in heat resistance and useful for layer insulating films or oriented films, etc., of liquid crystals in the electronic field. CONSTITUTION:This polyimide has (A) a recurring unit of a group expressed by formula I {R<1> and R<2> are each H, a halogen or a (halogenated) methyl; Z is a 1-4C (halogenated) alkylene, a 2-4C (halogenated) alkylidene, CO, O, S, SO2, CONH, a single bond, formula II [R<3> is R<1>; X<1> and X<2> are each a 1-4C (halogenated) alkylene, a 2-4C (halogenated) alkylidene, CO, O, S, SO2 or a single bond] or formula III (R<4> and R<5> are each R<1>; X<3>, R<4> and X<5> are each X<1>)} or (B) a recurring unit expressed by formula IV. The relative intrinsic viscosity of a polyamic acid which is a prepolymer thereof is 0.01-2.0.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、耐熱性の優れたポリイ
ミドに関する。
FIELD OF THE INVENTION The present invention relates to a polyimide having excellent heat resistance.

【0002】[0002]

【従来の技術】ポリイミドは、従来より耐熱性に優れた
樹脂としてよく知られており、近年、エレクトロニクス
分野において、層間絶縁膜や液晶の配向膜等に使用され
るようになってきた。このような用途においてはアミッ
ク酸またはポリイミドをワニスの状態で使用するが、芳
香族系テトラカルボン酸二無水物を用いるポリイミドは
一般に溶剤に溶解しにくく、汎用溶剤に可溶のポリイミ
ドが研究されてきた。
2. Description of the Related Art Polyimide has long been well known as a resin having excellent heat resistance, and in recent years, it has come to be used as an interlayer insulating film or an alignment film of liquid crystal in the electronics field. In such applications, amic acid or polyimide is used in the form of a varnish, but polyimide using an aromatic tetracarboxylic dianhydride is generally difficult to dissolve in a solvent, and polyimides soluble in general-purpose solvents have been studied. It was

【0003】従来の可溶性のポリイミドの中で、脂環式
テトラカルボン酸二無水物を用いるものとしては、例え
ば特開昭53−77299号公報にビシクロ[2.2.
2]オクテンテトラカルボン酸二無水物を用いるポリイ
ミドが開示されたが、高温では逆Diels-Alder 反応によ
るポリマー主鎖の開裂が起こるため耐熱性が低いと言う
欠点があった。そこで、このポリイミドの耐熱性を改良
するために、特開昭63−57557号公報、特開昭6
3−57589号公報ではビシクロ[2.2.1]ヘプ
タンテトラカルボン酸二無水物が提供され、これをポリ
イミドの原料とすることが提案されている。しかしなが
ら、これら2件の公報の脂環式テトラカルボン酸二無水
物の製造には、高価なパラジウム触媒を大量に使用しな
ければならず工業化は困難であり、また、それを用いた
ポリイミドの耐熱性もまだ十分とはいえなかった。
Among conventional soluble polyimides, examples of the one using an alicyclic tetracarboxylic acid dianhydride include bicyclo [2.2.
2] A polyimide using octenetetracarboxylic dianhydride has been disclosed, but it has a drawback that the heat resistance is low because cleavage of the polymer main chain occurs at a high temperature due to a reverse Diels-Alder reaction. Therefore, in order to improve the heat resistance of this polyimide, JP-A-63-57557 and JP-A-6-56157 are used.
In Japanese Patent Laid-Open No. 3-57589, bicyclo [2.2.1] heptanetetracarboxylic dianhydride is provided, and it is proposed to use this as a raw material for polyimide. However, in the production of the alicyclic tetracarboxylic dianhydrides of these two publications, it is difficult to industrialize because a large amount of expensive palladium catalyst must be used, and the heat resistance of polyimide using the same is high. The sex wasn't enough either.

【0004】一方、Zhubanov B.A.らはビ
シクロ[2.2.2]オクタンテトラカルボン酸無水物
を合成し(Izv.Akad.Nauk Kaz.Kh
im.1979,(5),68−71)、ポリイミドと
している(Vysokomol Soedin.,Se
r.B 1981,23,835−839)。このビシ
クロ[2.2.2]オクタン骨格を有する化合物は架橋
部分が飽和されており、高温でもビシクロ[2.2.
2]オクテン類のような逆Diels-Alder 反応を起こさな
いので、該化合物から誘導されたポリイミドは耐熱性の
向上が期待されたが、報告された10%重量減少温度は
663〜683K(390〜410℃)であり、まだ不
十分であった。
On the other hand, Zhubanov B. A. Synthesized bicyclo [2.2.2] octane tetracarboxylic acid anhydride (Izv. Akad. Nauk Kaz. Kh.
im. 1979, (5), 68-71), polyimide (Vysokomol Soedin., Se).
r. B 1981, 23 , 835-839). In the compound having a bicyclo [2.2.2] octane skeleton, the cross-linking portion is saturated, and the bicyclo [2.2.
2] Since the reverse Diels-Alder reaction like octenes does not occur, the polyimide derived from this compound is expected to have improved heat resistance, but the reported 10% weight loss temperature is 663 to 683K (390 to 390). 410 ° C.), which was still insufficient.

【0005】[0005]

【発明が解決しようとする課題】本発明の目的は、上記
のような従来技術の状況に鑑み、より耐熱性の優れたビ
シクロ[2.2.2]オクタン骨格を有するポリイミド
を提供することにある。
SUMMARY OF THE INVENTION An object of the present invention is to provide a polyimide having a bicyclo [2.2.2] octane skeleton, which is more excellent in heat resistance, in view of the state of the art as described above. is there.

【0006】[0006]

【課題を解決するための手段】本発明者らは、上記目的
を達成すべく鋭意検討した結果、ビシクロ[2.2.
2]オクタン骨格を有するポリイミドの耐熱性は、原料
とするビシクロ[2.2.2]オクタンテトラカルボン
酸二無水物の立体構造の差異に大きく影響され、繰返し
単位の立体構造を統一すれば、耐熱性を著しく向上させ
得ることを見出して本発明を完成させた。
Means for Solving the Problems As a result of intensive studies to achieve the above object, the present inventors have found that bicyclo [2.2.
2] The heat resistance of the polyimide having an octane skeleton is greatly affected by the difference in the three-dimensional structure of the raw material bicyclo [2.2.2] octanetetracarboxylic dianhydride, and if the three-dimensional structures of repeating units are unified, The present invention has been completed by finding that heat resistance can be significantly improved.

【0007】すなわち、本発明の要旨は、一般式[1]That is, the gist of the present invention resides in the general formula [1]

【化5】 {式中、R1 およびR2 は水素原子、ハロゲン原子、メ
チル基またはハロゲン化メチル基であり、Zは炭素数
1〜4の直鎖または分枝のアルキレン基、炭素数2〜4
の直鎖または分枝のアルキリデン基、炭素数1〜4の直
鎖または分枝のハロゲン化アルキレン基、炭素数2〜4
の直鎖または分枝のハロゲン化アルキリデン基、−CO
−、−O−、−S−、−SO2 −、−CONH−または
単結合、下記一般式[2]
[Chemical 5] {In the formula, R 1 and R 2 are a hydrogen atom, a halogen atom, a methyl group or a halogenated methyl group, and Z is a linear or branched alkylene group having 1 to 4 carbon atoms, or 2 to 4 carbon atoms.
, A straight-chain or branched alkylidene group, a straight-chain or branched halogenated alkylene group having 1 to 4 carbon atoms, and 2 to 4 carbon atoms
A linear or branched halogenated alkylidene group, -CO
-, - O -, - S -, - SO 2 -, - CONH- , or a single bond, the following general formula [2]

【化6】 (式中、R3 は水素原子、ハロゲン原子、メチル基また
はハロゲン化メチル基であり、X1 およびX2 は炭素数
1〜4の直鎖または分枝のアルキレン基、炭素数2〜4
の直鎖または分枝のアルキリデン基、炭素数1〜4の直
鎖または分枝のハロゲン化アルキレン基、炭素数2〜4
の直鎖または分枝のハロゲン化アルキリデン基、−CO
−、−O−、−S−、−SO2 −または単結合を示
す。)で表される二価の基または下記一般式[3]
[Chemical 6] (In the formula, R 3 is a hydrogen atom, a halogen atom, a methyl group or a halogenated methyl group, X 1 and X 2 are linear or branched alkylene groups having 1 to 4 carbon atoms, and 2 to 4 carbon atoms.
, A straight-chain or branched alkylidene group, a straight-chain or branched halogenated alkylene group having 1 to 4 carbon atoms, and 2 to 4 carbon atoms
A linear or branched halogenated alkylidene group, -CO
-, - O -, - S -, - shows a single bond or - SO 2. ) Or a divalent group represented by the following general formula [3]

【化7】 (式中、R4 およびR5 は水素原子、ハロゲン原子、メ
チル基またはハロゲン化メチル基であり、X3 、X4
よびX5 は炭素数1〜4の直鎖または分枝のアルキレン
基、炭素数2〜4の直鎖または分枝のアルキリデン基、
炭素数1〜4の直鎖または分枝のハロゲン化アルキレン
基、炭素数2〜4の直鎖または分枝のハロゲン化アルキ
リデン基、−CO−、−O−、−S−、−SO2 −また
は単結合を示す。)で表される二価の基を示す。}で表
される繰返し単位A、または一般式[4]
[Chemical 7] (In the formula, R 4 and R 5 are a hydrogen atom, a halogen atom, a methyl group or a halogenated methyl group, and X 3 , X 4 and X 5 are linear or branched alkylene groups having 1 to 4 carbon atoms, A linear or branched alkylidene group having 2 to 4 carbon atoms,
A straight-chain or branched halogenated alkylene group having 1 to 4 carbon atoms, a straight-chain or branched halogenated alkylidene group having 2 to 4 carbon atoms, -CO-, -O-, -S-, -SO 2-. Or a single bond is shown. ) Represents a divalent group represented by. } The repeating unit A represented by the following formula or the general formula [4]

【化8】 (式中、R1 、R2 およびZは前記と同じ意味をも
つ。)で表される繰返し単位Bを有し、かつ、プレポリ
マーであるポリアミック酸の相対固有粘度が0.01〜
2.0であるポリイミドにある。
[Chemical 8] (Wherein R 1 , R 2 and Z have the same meaning as described above), and the relative intrinsic viscosity of the polyamic acid as a prepolymer is 0.01 to
It is in the polyimide which is 2.0.

【0008】以下本発明を詳細に説明する。本発明のポ
リイミドは、下記一般式[5]
The present invention will be described in detail below. The polyimide of the present invention has the following general formula [5].

【化9】 または一般式[6][Chemical 9] Or general formula [6]

【化10】 で表されるビシクロ[2.2.2]オクタンテトラカル
ボン酸二無水物から実質的になる酸二無水物とジアミン
類との反応により製造される。
[Chemical 10] It is produced by the reaction of an acid dianhydride consisting essentially of bicyclo [2.2.2] octanetetracarboxylic acid dianhydride represented by and a diamine.

【0009】酸二無水物[5]と[6]は1つの酸無水
物部分の立体配置が互いに異なる立体異性体であり、そ
れらは例えば下記のような反応式により製造される。
The acid dianhydrides [5] and [6] are stereoisomers in which the configurations of one acid anhydride moiety are different from each other, and they are produced, for example, by the following reaction formula.

【0010】[0010]

【化11】 [Chemical 11]

【0011】すなわち、フタル酸[7]の電解還元によ
り3,5−シクロヘキサジエン−trans−1,2−
ジカルボン酸[8]を得、これをメチルエステル[9]
とした後、マレイン酸ジメチルとDiels-Alder 反応を行
い、1rC7−ビシクロ[2.2.2]オクト−7−エ
ン−2t,3c,5c,6c−テトラカルボン酸テトラ
メチル[10]とし、常法により水素化して1rC7−
ビシクロ[2.2.2]オクタン−2t,3c,5c,
6c−テトラカルボン酸テトラメチル[11]を得る。
この飽和テトラカルボン酸テトラメチルを加水分解後脱
水閉環すると、酸二無水物[5]または[6]が得られ
る。酸二無水物[5]および[6]の生成は加水分解に
用いる触媒により制御され、酸二無水物[5]を得るに
は酸を用い、酸二無水物[6]を得るにはアルカリを用
いる。脱水閉環の方法としては、特に限定されないが、
例えば無水酢酸等の脱水剤の存在下で加熱する方法があ
げられる。溶媒としては例えばデカリン、ベンゼン、ト
ルエン、キシレン、ジエチルベンゼン、tert−アミ
ルベンゼン等が挙げられる。また、反応温度は一般に8
0〜300℃、好ましくは100〜250℃である。
That is, 3,5-cyclohexadiene-trans-1,2-by electrolytic reduction of phthalic acid [7].
Dicarboxylic acid [8] is obtained, which is methyl ester [9]
After that, Diels-Alder reaction was performed with dimethyl maleate to give 1rC7-bicyclo [2.2.2] oct-7-ene-2t, 3c, 5c, 6c-tetracarboxylic acid tetramethyl [10], which was Hydrogenated by the method 1rC7-
Bicyclo [2.2.2] octane-2t, 3c, 5c,
6c-tetramethyl tetracarboxylate [11] is obtained.
Hydrolysis of this saturated tetramethyl tetracarboxylate followed by ring closure by dehydration gives acid dianhydride [5] or [6]. The formation of acid dianhydrides [5] and [6] is controlled by the catalyst used for hydrolysis, an acid is used to obtain acid dianhydride [5], and an alkali is used to obtain acid dianhydride [6]. To use. The method of dehydration ring closure is not particularly limited,
For example, there is a method of heating in the presence of a dehydrating agent such as acetic anhydride. Examples of the solvent include decalin, benzene, toluene, xylene, diethylbenzene, tert-amylbenzene and the like. The reaction temperature is generally 8
The temperature is 0 to 300 ° C, preferably 100 to 250 ° C.

【0012】上記のような酸二無水物[5]または
[6]と重合させるジアミン化合物は、一般式[12]
The diamine compound to be polymerized with the acid dianhydride [5] or [6] as described above is represented by the general formula [12]

【0013】[0013]

【12】(式中、R1 、R2 およびZは前記と同じ意味
を持つ。)で表される芳香族ジアミン化合物が挙げられ
る。
An aromatic diamine compound represented by the formula (wherein R 1 , R 2 and Z have the same meanings as described above) can be mentioned.

【0014】具体的にはZがの場合、例えば4,4´
−ジアミノジフェニルメタン、4,4´−ジアミノジフ
ェニルエーテル、4,4´−ジアミノジフェニルスルホ
ン、4,4´−ジアミノジフェニルスルフィド、4,4
´−ジアミノベンゾフェノン、4,4´−ジアミノベン
ズアニリド、2,2−ビス(p−アミノフェニル)プロ
パン、2,2−ビス(p−アミノフェニル)ヘキサフル
オロプロパン、3,3´−ジアミノジフェニルメタン、
3,3´−ジアミノジフェニルエーテル、3,3´−ジ
アミノジフェニルスルホン、3,3´−ジアミノジフェ
ニルスルフィド、3,3´−ジアミノベンゾフェノン、
3,3´−ジアミノベンズアニリド、2,2−ビス(m
−アミノフェニル)プロパン、2,2−ビス(m−アミ
ノフェニル)ヘキサフルオロプロパンおよび3,3´−
ジメチルベンジジン等が挙げられる。
Specifically, when Z is, for example, 4,4 '
-Diaminodiphenylmethane, 4,4'-diaminodiphenyl ether, 4,4'-diaminodiphenyl sulfone, 4,4'-diaminodiphenyl sulfide, 4,4
′ -Diaminobenzophenone, 4,4′-diaminobenzanilide, 2,2-bis (p-aminophenyl) propane, 2,2-bis (p-aminophenyl) hexafluoropropane, 3,3′-diaminodiphenylmethane,
3,3′-diaminodiphenyl ether, 3,3′-diaminodiphenyl sulfone, 3,3′-diaminodiphenyl sulfide, 3,3′-diaminobenzophenone,
3,3′-diaminobenzanilide, 2,2-bis (m
-Aminophenyl) propane, 2,2-bis (m-aminophenyl) hexafluoropropane and 3,3'-
Dimethylbenzidine and the like can be mentioned.

【0015】また、Zが一般式[2]で表される二価
の基の場合、例えば1,4″−ジアミノテルフェニル、
1,4−ビス(4−アミノフェノキシ)ベンゼン、1,
3−ビス(3−アミノフェノキシ)ベンゼンおよび1,
3−ビス(4−アミノフェノキシ)ベンゼン等が挙げら
れる。
When Z is a divalent group represented by the general formula [2], for example, 1,4 "-diaminoterphenyl,
1,4-bis (4-aminophenoxy) benzene, 1,
3-bis (3-aminophenoxy) benzene and 1,
3-bis (4-aminophenoxy) benzene etc. are mentioned.

【0016】さらにZが一般式[3]で表される二価
の基の場合、例えばビス[4−(4−アミノフェノキ
シ)フェニル]メタン、2,2−ビス[4−(4−アミ
ノフェノキシ)フェニル]プロパン、2,2−ビス[4
−(4−アミノフェノキシ)フェニル]ヘキサフルオロ
プロパン、ビス[4−(4−アミノフェノキシ)フェニ
ル]スルホン、ビス[4−(3−アミノフェノキシ)フ
ェニル]スルホンおよび4,4´−ジ(p−アミノフェ
ノキシ)ビフェニル等が挙げられる。
Further, when Z is a divalent group represented by the general formula [3], for example, bis [4- (4-aminophenoxy) phenyl] methane, 2,2-bis [4- (4-aminophenoxy). ) Phenyl] propane, 2,2-bis [4
-(4-Aminophenoxy) phenyl] hexafluoropropane, bis [4- (4-aminophenoxy) phenyl] sulfone, bis [4- (3-aminophenoxy) phenyl] sulfone and 4,4'-di (p- Aminophenoxy) biphenyl and the like can be mentioned.

【0017】これらのジアミンは、それぞれ単独で用い
てもよいし、2種以上の混合物として用いてもよい。
These diamines may be used alone or as a mixture of two or more kinds.

【0018】上記のようなビシクロ[2.2.2]オク
タン骨格を有するテトラカルボン酸二無水物とジアミン
との重合方法は特に制限されないが好ましい方法として
は、高温でのみ重合させる一段重合、または低温で先ず
アミック酸を合成し、その後高温でイミド化する二段重
合で行なうことができるが、高分子量のポリイミドを得
るためには、好ましくは二段重合で行なわれる。一段重
合による場合は、重合条件としては100〜350℃、
好ましくは150〜300℃の温度で0.5〜20時
間、好ましくは1〜15時間であり、二段重合の場合
は、アミック酸合成を0〜100℃、好ましくは0〜7
0℃の温度で0.5〜100時間、好ましくは1〜10
0時間で行ない、その後イミド化を100〜350℃、
好ましくは100〜300℃の温度で0.5〜20時
間、好ましくは1〜10時間で行なう。
The method of polymerizing the tetracarboxylic dianhydride having a bicyclo [2.2.2] octane skeleton and the diamine as described above is not particularly limited, but a preferable method is one-step polymerization in which the polymerization is carried out only at a high temperature, or It can be carried out by a two-step polymerization in which an amic acid is first synthesized at a low temperature and then is imidized at a high temperature, but in order to obtain a high molecular weight polyimide, the two-step polymerization is preferable. In the case of one-step polymerization, the polymerization conditions are 100 to 350 ° C,
The temperature is preferably 150 to 300 ° C. for 0.5 to 20 hours, preferably 1 to 15 hours, and in the case of two-step polymerization, the amic acid synthesis is performed at 0 to 100 ° C., preferably 0 to 7 hours.
0.5 to 100 hours at a temperature of 0 ° C., preferably 1 to 10
It is performed for 0 hours, and then imidization is performed at 100 to 350 ° C.,
It is preferably carried out at a temperature of 100 to 300 ° C. for 0.5 to 20 hours, preferably 1 to 10 hours.

【0019】また、重合には溶媒として非プロトン性極
性溶媒、フェノール系溶媒が用いられる。非プロトン性
極性溶媒としては、N−メチル−2−ピロリドン、N,
N−ジメチルアセトアミド、N,N−ジメチルホルムア
ミド、1,3−ジメチル−2−イミダゾリジノン、ジメ
チルスルホキシドが挙げられ、フェノール系溶媒として
はフェノール、ハロゲン化フェノール、クレゾールなど
が挙げられ、これらの溶媒を単独または混合して使用す
る。
In the polymerization, an aprotic polar solvent or a phenolic solvent is used as a solvent. As the aprotic polar solvent, N-methyl-2-pyrrolidone, N,
Examples thereof include N-dimethylacetamide, N, N-dimethylformamide, 1,3-dimethyl-2-imidazolidinone, and dimethyl sulfoxide. Examples of the phenol-based solvent include phenol, halogenated phenol, cresol, and the like. Are used alone or in combination.

【0020】上記のようにして、ビシクロ[2.2.
2]オクタンテトラカルボン酸二無水物の一種の立体異
性体のみを実質的に用いて得られた本発明のポリイミド
は、繰返し単位の立体構造が統一され、従来の立体異性
体を意識することなくビシクロ[2.2.2]オクタン
テトラカルボン酸二無水物を用いたポリイミド(Vys
okomol Soedin.,Ser.B 198
1,23,835−839)より、耐熱性においては格
段に優れている。すなわち、本発明のポリイミドの原料
となるビシクロ[2.2.2]オクタンテトラカルボン
酸二無水物[5]および[6]は立体異性体の関係にあ
り、1つの酸無水物部分の立体配置が互いに異なるのみ
であるが、融点において[5]は389.3℃(昇華)
であるのに対し、[6]は230.9℃で、明確に区別
し得る化合物である。一方、従来知られていたビシクロ
[2.2.2]オクタンテトラカルボン酸二無水物の融
点は、上記文献によれば581K(308℃)である。
酸二無水物[5]および[6]の融点はいずれもこの従
来の酸二無水物の融点に一致せず、従来の酸二無水物に
比較して酸二無水物[5]は81.3℃高く、酸二無水
物[6]は79.1℃低い。このように従来の酸二無水
物とはそれぞれ明確に融点の異なる、酸二無水物[5]
または[6]を、別個にジアミン類と重合させて得られ
るポリイミドは、上記文献により従来知られている酸二
無水物を用いたポリイミドより、格段に優れた耐熱性を
有している。
As described above, bicyclo [2.2.
2] The polyimide of the present invention obtained by substantially using only one stereoisomer of octanetetracarboxylic dianhydride has a uniform stereostructure of repeating units, and is not conscious of conventional stereoisomers. Polyimide using bicyclo [2.2.2] octanetetracarboxylic dianhydride (Vys
okomol Soedin. , Ser. B 198
1, 23 , 835-839), it is remarkably superior in heat resistance. That is, the bicyclo [2.2.2] octanetetracarboxylic dianhydrides [5] and [6], which are the raw materials for the polyimide of the present invention, have a stereoisomeric relationship, and the configuration of one acid anhydride moiety is three-dimensional. Are different from each other, but at the melting point [5] is 389.3 ° C. (sublimation)
[6] is a compound that can be clearly distinguished at 230.9 ° C. On the other hand, the melting point of conventionally known bicyclo [2.2.2] octanetetracarboxylic dianhydride is 581 K (308 ° C.) according to the above literature.
None of the melting points of the acid dianhydrides [5] and [6] match the melting point of the conventional acid dianhydride, and the acid dianhydride [5] has a melting point of 81. It is 3 ° C higher, and the acid dianhydride [6] is 79.1 ° C lower. Thus, the acid dianhydrides [5], which have distinctly different melting points from the conventional acid dianhydrides,
Alternatively, the polyimide obtained by separately polymerizing [6] with diamines has significantly higher heat resistance than the polyimide using an acid dianhydride conventionally known from the above literature.

【0021】上記のようにして、ビシクロ[2.2.
2]オクタンテトラカルボン酸二無水物の一種の立体異
性体のみを実質的に用いて得られた本発明のポリイミド
は、耐熱性に優れているので、広範囲の用途があるが、
ほとんどが汎用溶剤への溶解度も高いので、特にエレク
トロニクス分野における、半導体の層間絶縁膜や液晶の
配向膜等の用途に好適である。
As described above, the bicyclo [2.2.
2] The polyimide of the present invention obtained by substantially using only one stereoisomer of octanetetracarboxylic dianhydride has a wide range of applications because it has excellent heat resistance.
Since most of them have high solubility in general-purpose solvents, they are suitable for applications such as semiconductor interlayer insulating films and liquid crystal alignment films, especially in the electronics field.

【0022】[0022]

【実施例】本発明を以下の実施例により詳細に説明する
が、本発明の範囲はこれらの実施例に限定されるもので
はない。なお、個々の実施例において特に言及はしてい
ないが、化合物が対掌体を有する場合には、対掌体も含
むものとする。
The present invention will be described in detail with reference to the following examples, but the scope of the present invention is not limited to these examples. It should be noted that, although not particularly mentioned in each example, when a compound has an enantiomer, the enantiomer is also included.

【0023】参考例1(1rC7−ビシクロ[2.2.
2]オクト−7−エン−2t,3c,5c,6c−テト
ラカルボン酸テトラメチルの製造) 1l の電解反応槽に素焼き円筒隔膜(内径4.5cm×外
径5.0cm×高さ15cm )を置いてこの内部を陽極室
とし、陰極として厚さ0.1cmの鉛板(7cm×13cm)
を、陽極として厚さ0.1cmの鉛板(4cm×12.5c
m)を取り付け、陰極室に1,4−ジオキサン300ml
および5%硫酸300mlの混合溶媒を注ぎ、陽極室に5
%硫酸200mlを注入した。
Reference Example 1 (1rC7-bicyclo [2.2.
2] Production of Octo-7-ene-2t, 3c, 5c, 6c-tetramethyl tetracarboxylate) A 1 l electrolytic reaction tank was equipped with a unglazed cylindrical diaphragm (inner diameter 4.5 cm x outer diameter 5.0 cm x height 15 cm). Place this inside as an anode chamber and use a 0.1 cm thick lead plate (7 cm x 13 cm) as a cathode.
As a positive electrode with a lead plate of 0.1 cm thickness (4 cm x 12.5 c
m) attached, 300 ml of 1,4-dioxane in the cathode chamber
Pour a mixed solvent of 300 ml of 5% sulfuric acid and 5% into the anode chamber.
200 ml of% sulfuric acid was injected.

【0024】さらに陰極室にフタル酸40g(0.24
1mol )を加え、陰極液を撹拌しながら70℃、8Aで
2時間、定電流電解還元を行った。陰極液を150mlま
で減圧濃縮した後冷却し、3,5−シクロヘキサジエン
−trans−1,2−ジカルボン酸を白色固体として
析出させた。収量は39.0g(0.232mol )で収
率は96.3%であった。生成物の融点は194℃であ
った。IRスペクトルを図1に、 1H−NMRスペクト
ル(d6 −DMSO中、以下同様)を図2に示す。
Further, 40 g of phthalic acid (0.24
1 mol) was added, and constant current electrolytic reduction was performed at 70 ° C. and 8 A for 2 hours while stirring the catholyte. The catholyte was concentrated under reduced pressure to 150 ml and then cooled to deposit 3,5-cyclohexadiene-trans-1,2-dicarboxylic acid as a white solid. The yield was 39.0 g (0.232 mol), which was 96.3%. The melting point of the product was 194 ° C. The IR spectrum is shown in FIG. 1, and the 1 H-NMR spectrum (in d 6 -DMSO, the same applies hereinafter) is shown in FIG. 2.

【0025】上記と全く同様に操作して得られた3,5
−シクロヘキサジエン−trans−1,2−ジカルボ
ン酸50.0g(0.298mol )をメタノール400
mlと濃硫酸8ml中で18時間還流した。その後メタノー
ルを濃縮し、飽和炭酸水素ナトリウム水溶液で中和後エ
ーテル抽出を行なった。無水硫酸マグネシウムで脱水
し、溶媒を留去して、3,5−シクロヘキサジエン−t
rans−1,2−ジカルボン酸ジメチルを無色透明の
液体として得た。収量は51.1g(0.261mol )
で収率は88%であった。IRスペクトルを図3に、 1
H−NMRスペクトルを図4に示す。
3,5 obtained by operating exactly as above
-Cyclohexadiene-trans-1,2-dicarboxylic acid 50.0 g (0.298 mol) in methanol 400
The mixture was refluxed in 8 ml of concentrated sulfuric acid for 18 hours. Thereafter, the methanol was concentrated, neutralized with a saturated aqueous sodium hydrogen carbonate solution, and extracted with ether. It was dehydrated with anhydrous magnesium sulfate and the solvent was distilled off to give 3,5-cyclohexadiene-t.
Dimethyl trans-1,2-dicarboxylate was obtained as a colorless transparent liquid. Yield 51.1 g (0.261 mol)
The yield was 88%. The IR spectrum is shown in Fig. 1
The 1 H-NMR spectrum is shown in Fig. 4.

【0026】上記と全く同様に操作して得られた3,5
−シクロヘキサジエン−trans−1,2−ジカルボ
ン酸ジメチル98.0g(0.500mol )に72.0
g(0.500mol )のマレイン酸ジメチルを加え、窒
素雰囲気下、190℃、9時間加熱撹拌した後、減圧蒸
留し、1rC7−ビシクロ[2.2.2]オクト−7−
エン−2t,3c,5c,6c−テトラカルボン酸テト
ラメチルを無色透明な粘性液体として得た。収量は11
8.3g(0.348mol )、収率は69.5%であ
り、生成物の沸点は159〜160℃/0.5mmHg
であった。IRスペクトルを図5に、 1H−NMRスペ
クトルを図6に示す。
3,5 obtained by operating exactly as above
72.0 g of dimethyl cyclohexadiene-trans-1,2-dicarboxylate (98.0 g, 0.500 mol)
g (0.500 mol) of dimethyl maleate was added, and the mixture was heated and stirred under a nitrogen atmosphere at 190 ° C. for 9 hours, and then distilled under reduced pressure to give 1rC7-bicyclo [2.2.2] oct-7-.
Tetramethyl ene-2t, 3c, 5c, 6c-tetracarboxylate was obtained as a colorless and transparent viscous liquid. Yield is 11
8.3g (0.348mol), the yield is 69.5%, the boiling point of the product is 159-160 ° C / 0.5mmHg
Met. The IR spectrum is shown in FIG. 5 and the 1 H-NMR spectrum is shown in FIG.

【0027】参考例2(1rC7−ビシクロ[2.2.
2]オクト−7−エン−2c,3c,5c,6c−テト
ラカルボン酸テトラメチルの合成) 4−シクロヘキセン−1,2−ジカルボン酸無水物2
0.0g(0.131mol )を無水エーテル200ml中
に懸濁させ、4℃に保ちながら臭素21.0g(0.1
31mol )を2時間かけて滴下した。得られた固体を濾
過し、trans−4,5−ジブロモシクロヘキサン−
1,2−ジカルボン酸無水物を34.0g(0.109
mol )得た。シクロヘキサンから再結晶させた生成物の
融点は137〜138℃であった。
Reference Example 2 (1rC7-bicyclo [2.2.
2] Synthesis of Octo-7-ene-2c, 3c, 5c, 6c-tetramethyl tetracarboxylate) 4-Cyclohexene-1,2-dicarboxylic acid anhydride 2
0.0 g (0.131 mol) was suspended in 200 ml of anhydrous ether and 21.0 g (0.1
31 mol) was added dropwise over 2 hours. The obtained solid was filtered and trans-4,5-dibromocyclohexane-
34.0 g (0.109) of 1,2-dicarboxylic acid anhydride
mol) obtained. The melting point of the product recrystallized from cyclohexane was 137-138 ° C.

【0028】得られたジカルボン酸無水物34.0g
(0.109mol )に無水マレイン酸21.4g(0.
218mol )を加え、窒素雰囲気下、200℃で、30
時間加熱し、1rC7−ビシクロ[2.2.2]オクト
−7−エン−2c,3c,5c,6c−テトラカルボン
酸−2,3:5,6−二無水物(以下酸二無水物8−U
と略記する。)を18.9g(0.0761mol )得
た。精製アセトニトリルから再結晶させた生成物の分解
点は303〜304℃であった。IRスペクトルを図7
に、 1H−NMRスペクトルを図8に示す。
34.0 g of the obtained dicarboxylic acid anhydride
(0.109 mol) maleic anhydride 21.4 g (0.
218 mol), and under a nitrogen atmosphere at 200 ° C for 30
After heating for 1 hour, 1rC7-bicyclo [2.2.2] oct-7-ene-2c, 3c, 5c, 6c-tetracarboxylic acid-2,3: 5,6-dianhydride (hereinafter referred to as acid dianhydride 8 -U
Is abbreviated. ) Was obtained (18.9 g, 0.0761 mol). The decomposition point of the product recrystallized from purified acetonitrile was 303 to 304 ° C. Figure 7 shows the IR spectrum.
The 1 H-NMR spectrum is shown in FIG.

【0029】参考例3 ステンレス製オートクレーブに参考例1で製造した1r
C7−ビシクロ[2.2.2]オクト−7−エン−2
t,3c,5c,6c−テトラカルボン酸テトラメチル
34.0g(0.100mol )を仕込み、エタノールを
85ml、5%Pd−Cを0.34g加え、水素で24K
g/cm2 に昇圧し、室温で20時間撹拌した。反応後触
媒をろ別した後、エバポレーターで溶媒を除去し、1r
C7−ビシクロ[2.2.2]オクタン−2t,3c,
5c,6c−テトラカルボン酸テトラメチルを無色透明
な粘性液体として得た。収量は34.3g(0.100
mol)、収率はほぼ100%であった。IRスペクトル
を図9に、 1H−NMRスペクトルを図10に示す。
Reference Example 3 1r manufactured in Reference Example 1 in a stainless steel autoclave
C7-bicyclo [2.2.2] oct-7-ene-2
Charge 34.0 g (0.100 mol) of tetramethyl t, 3c, 5c, 6c-tetracarboxylate, add 85 ml of ethanol and 0.34 g of 5% Pd-C, and add 24K of hydrogen.
The pressure was raised to g / cm 2 and the mixture was stirred at room temperature for 20 hours. After the reaction, the catalyst was filtered off, the solvent was removed by an evaporator, and 1r
C7-bicyclo [2.2.2] octane-2t, 3c,
Tetramethyl 5c, 6c-tetracarboxylate was obtained as a colorless transparent viscous liquid. The yield is 34.3 g (0.100
mol) and the yield was almost 100%. The IR spectrum is shown in FIG. 9 and the 1 H-NMR spectrum is shown in FIG.

【0030】得られたテトラカルボン酸テトラメチル
(34.3g−0.100mol )に14%水酸化ナトリ
ウム水溶液170ml、エタノール340mlを加え6時間
還流した。反応終了後溶液を減圧濃縮し、酢酸エチルで
抽出し、さらに水層を希塩酸で弱酸性にした後、再び酢
酸エチルで抽出した。得られた溶液を無水硫酸マグネシ
ウムで脱水し、エバポレーターで濃縮してビシクロ
[2.2.2]オクタン−2,3,5,6−テトラカル
ボン酸24.9g(0.0870mol )を白色固体とし
て得た。この固体24.9g(0.0870mol )に、
無水酢酸250ml、デカリン150mlを加え、16時間
還流し、溶液を減圧濃縮し、得られた白色固体を無水酢
酸から再結晶してシス−トランス型の1rC7−ビシク
ロ[2.2.2]オクタン−2t,3t,5c,6c−
テトラカルボン酸−2,3:5,6−二無水物(以下酸
二無水物Aと略記する。)14.1g(0.0564mo
l )を得た。加水分解と脱水閉環を通じての収率は5
6.2%であった。
170 ml of 14% aqueous sodium hydroxide solution and 340 ml of ethanol were added to the obtained tetramethyl tetracarboxylate (34.3 g-0.100 mol), and the mixture was refluxed for 6 hours. After completion of the reaction, the solution was concentrated under reduced pressure, extracted with ethyl acetate, the aqueous layer was made weakly acidic with dilute hydrochloric acid, and then extracted again with ethyl acetate. The obtained solution was dehydrated with anhydrous magnesium sulfate and concentrated with an evaporator to obtain 24.9 g (0.0870 mol) of bicyclo [2.2.2] octane-2,3,5,6-tetracarboxylic acid as a white solid. Obtained. To 24.9 g (0.0870 mol) of this solid,
Acetic anhydride (250 ml) and decalin (150 ml) were added, the mixture was refluxed for 16 hours, the solution was concentrated under reduced pressure, and the obtained white solid was recrystallized from acetic anhydride to give cis-trans type 1rC7-bicyclo [2.2.2] octane-. 2t, 3t, 5c, 6c-
Tetracarboxylic acid-2,3: 5,6-dianhydride (hereinafter abbreviated as acid dianhydride A) 14.1 g (0.0564 mo)
l) got. The yield through hydrolysis and dehydration ring closure is 5
It was 6.2%.

【0031】生成物の融点は230℃であり、そのIR
スペクトルを図11に、 1H−NMRスペクトルを図1
2に示す。
The melting point of the product is 230 ° C. and its IR
The spectrum is shown in FIG. 11 and the 1 H-NMR spectrum is shown in FIG.
2 shows.

【0032】参考例4 参考例3と全く同様に水素化して製造した1rC7−ビ
シクロ[2.2.2]オクタン−2t,3c,5c,6
c−テトラカルボン酸テトラメチル34.3g(0.1
00mol )に7%塩酸170mlを加え、1時間ごとに濃
塩酸を14mlずつ加えながら9時間還流した。反応終了
後、減圧濃縮し、ビシクロ[2.2.2]オクタン−
2,3,5,6−テトラカルボン酸27.1g(0.0
946mol)を白色固体として得た。この固体27.1
g(0.0946mol )に、無水酢酸250ml、デカリ
ン150mlを加え、16時間還流し、溶液を減圧濃縮
し、得られた白色固体を無水酢酸から再結晶してシス−
シス型の1rC7−ビシクロ[2.2.2]オクタン−
2c,3c,5c,6c−テトラカルボン酸−2,3:
5,6−二無水物(以下酸二無水物Bと略記する。)
7.1g(0.028mol)を得た。加水分解と脱水閉
環を通じての収率は28.4%であった。生成物の昇華
点は389.3℃であり、そのIRスペクトルを図13
に、 1H−NMRスペクトルを図14に示す。
Reference Example 4 1rC7-bicyclo [2.2.2] octane-2t, 3c, 5c, 6 produced by hydrogenation in exactly the same manner as in Reference Example 3.
34.3 g of tetramethyl c-tetracarboxylate (0.1
170 ml of 7% hydrochloric acid was added to (00 mol) and the mixture was refluxed for 9 hours while adding 14 ml of concentrated hydrochloric acid every hour. After completion of the reaction, the reaction mixture was concentrated under reduced pressure to give bicyclo [2.2.2] octane-
2,3,5,6-tetracarboxylic acid 27.1 g (0.0
946 mol) was obtained as a white solid. This solid 27.1
To g (0.0946 mol), 250 ml of acetic anhydride and 150 ml of decalin were added, refluxed for 16 hours, the solution was concentrated under reduced pressure, and the obtained white solid was recrystallized from acetic anhydride to give cis-.
Cis-type 1rC7-bicyclo [2.2.2] octane-
2c, 3c, 5c, 6c-tetracarboxylic acid-2,3:
5,6-dianhydride (hereinafter abbreviated as acid dianhydride B)
7.1 g (0.028 mol) was obtained. The yield through hydrolysis and dehydration ring closure was 28.4%. The sublimation point of the product is 389.3 ° C., and its IR spectrum is shown in FIG.
FIG. 14 shows the 1 H-NMR spectrum.

【0033】実施例1 三つ口フラスコに4,4´−ジアミノジフェニルエーテ
ル(以下DDEと略記する。)0.4g(2mmol)、N
−メチル−2−ピロリドン2mlおよびピリジン0.6ml
を仕込み、参考例3で得られた酸二無水物A2mmolを加
え、室温で(2日間)撹拌してポリアミック酸を合成し
た。
Example 1 0.4 g (2 mmol) of 4,4'-diaminodiphenyl ether (hereinafter abbreviated as DDE) in a three-necked flask, N
-Methyl-2-pyrrolidone 2 ml and pyridine 0.6 ml
Was charged, 2 mmol of the acid dianhydride A obtained in Reference Example 3 was added, and the mixture was stirred at room temperature (2 days) to synthesize a polyamic acid.

【0034】ついでこのポリアミック酸溶液を200℃
で2時間撹拌し、無色透明のポリイミドを合成した。こ
のポリイミド溶液をガラス板上にキャストし、減圧下約
80℃で2時間乾燥させてフィルム状のポリイミドとし
た。
Next, this polyamic acid solution was treated at 200 ° C.
After stirring for 2 hours, a colorless transparent polyimide was synthesized. This polyimide solution was cast on a glass plate and dried under reduced pressure at about 80 ° C. for 2 hours to obtain a film-shaped polyimide.

【0035】得られたポリイミドは、N−メチル−2−
ピロリドン、N,N−ジメチルアセトアミド、N,N−
ジメチルホルムアミド、1,3−ジメチル−2−イミダ
ゾリジノン、ピリジン、ジメチルスルホキシドおよびm
−クレゾールに可溶であった。
The obtained polyimide is N-methyl-2-
Pyrrolidone, N, N-dimethylacetamide, N, N-
Dimethylformamide, 1,3-dimethyl-2-imidazolidinone, pyridine, dimethylsulfoxide and m
-Soluble in cresol.

【0036】得られたポリアミック酸の相対固有粘度
(N−メチル−2−ピロリドン、濃度0.5g/dl、
30℃)、ポリイミドの熱重量減少温度(TGA法に準
拠し、窒素雰囲気下、昇温速度10℃/分)(以下同
様)を表1に示す。
The relative intrinsic viscosity of the obtained polyamic acid (N-methyl-2-pyrrolidone, concentration 0.5 g / dl,
Table 1 shows the thermogravimetric reduction temperature of polyimide (in accordance with the TGA method, in a nitrogen atmosphere, at a temperature rising rate of 10 ° C./min) (the same applies hereinafter).

【0037】実施例2 実施例1において、酸二無水物Aに代えて、参考例4で
得られた酸二無水物Bを用いた以外は、実施例1と同様
にしてポリアミック酸を合成した。
Example 2 A polyamic acid was synthesized in the same manner as in Example 1 except that the dianhydride B obtained in Reference Example 4 was used in place of the acid dianhydride A in Example 1. .

【0038】得られたポリアミック酸溶液をガラス板上
にキャストし、減圧下約80℃で2時間乾燥させた後、
220℃で2時間加熱して、フィルム状の無色透明のポ
リイミドとした。
The resulting polyamic acid solution was cast on a glass plate and dried under reduced pressure at about 80 ° C. for 2 hours.
It was heated at 220 ° C. for 2 hours to obtain a film-like colorless transparent polyimide.

【0039】得られたポリアミック酸の相対固有粘度お
よびポリイミドの熱重量減少温度を表1に示し、ポリイ
ミドのIRスペクトルを図15に示す。
The relative intrinsic viscosity of the obtained polyamic acid and the thermogravimetric loss temperature of the polyimide are shown in Table 1, and the IR spectrum of the polyimide is shown in FIG.

【0040】比較例1 参考例2において中間体として得られた酸二無水物8−
Uを用いて実施例2と同様にポリアミック酸およびポリ
イミドを合成した。得られたポリアミック酸の相対固有
粘度およびポリイミドの熱重量減少温度を表1に示す。
Comparative Example 1 Acid dianhydride 8-obtained as an intermediate in Reference Example 2
Using U, a polyamic acid and a polyimide were synthesized in the same manner as in Example 2. Table 1 shows the relative intrinsic viscosity of the obtained polyamic acid and the thermogravimetric reduction temperature of the polyimide.

【0041】実施例3 実施例1において、DDEに代えて、4,4´−ジアミ
ノジフェニルメタンを用いた以外は、実施例1と同様に
して無色透明のポリイミドとした。
Example 3 A colorless and transparent polyimide was prepared in the same manner as in Example 1 except that 4,4'-diaminodiphenylmethane was used instead of DDE.

【0042】得られたポリイミドは、N−メチル−2−
ピロリドン、N,N−ジメチルアセトアミド、N,N−
ジメチルホルムアミド、1,3−ジメチル−2−イミダ
ゾリジノン、ピリジン、ジメチルスルホキシドおよびm
−クレゾールに可溶であった。
The obtained polyimide is N-methyl-2-
Pyrrolidone, N, N-dimethylacetamide, N, N-
Dimethylformamide, 1,3-dimethyl-2-imidazolidinone, pyridine, dimethylsulfoxide and m
-Soluble in cresol.

【0043】得られたポリアミック酸の相対固有粘度お
よびポリイミドの熱重量減少温度を表1に示し、ポリイ
ミドのIRスペクトルを図16に示す。
The relative intrinsic viscosity of the obtained polyamic acid and the thermogravimetric reduction temperature of the polyimide are shown in Table 1, and the IR spectrum of the polyimide is shown in FIG.

【0044】実施例4 実施例1において、DDEに代えて、2,2−ビス[4
−(4−アミノフェノキシ)フェニル]プロパン(以下
BAPPと略記する。)を用いた以外は、実施例1と同
様にして無色透明のポリイミドとした。
Example 4 In Example 1, instead of DDE, 2,2-bis [4
A colorless and transparent polyimide was prepared in the same manner as in Example 1 except that-(4-aminophenoxy) phenyl] propane (hereinafter abbreviated as BAPP) was used.

【0045】得られたポリアミック酸の相対固有粘度お
よびポリイミドの熱重量減少温度を表1に示し、ポリイ
ミドのIRスペクトルを図17に示す。
The relative intrinsic viscosity of the obtained polyamic acid and the thermogravimetric reduction temperature of the polyimide are shown in Table 1, and the IR spectrum of the polyimide is shown in FIG.

【0046】実施例5 実施例2においてDDEをBAPPに代えた以外は、実
施例2と同様にして無色透明のポリイミドとした。
Example 5 A colorless and transparent polyimide was prepared in the same manner as in Example 2 except that BAPP was used instead of DDE.

【0047】得られたポリアミック酸の相対固有粘度お
よびポリイミドの熱重量減少温度を表1に示す。
Table 1 shows the relative intrinsic viscosity of the obtained polyamic acid and the thermogravimetric reduction temperature of the polyimide.

【0048】実施例6 実施例1においてDDEに代えて、4,4´−ジアミノ
ジフェニルスルホンを用いた以外は、実施例1と同様に
して無色透明のポリイミドとした。
Example 6 A colorless and transparent polyimide was prepared in the same manner as in Example 1 except that 4,4'-diaminodiphenyl sulfone was used instead of DDE.

【0049】得られたポリアミック酸の相対固有粘度お
よびポリイミドの熱重量減少温度を表1に示す。
Table 1 shows the relative intrinsic viscosity of the obtained polyamic acid and the thermogravimetric reduction temperature of the polyimide.

【0050】実施例7 実施例2において、DDEに代えて、2,2−ビス[4
−(4−アミノフェノキシ)フェニル]スルホンを用い
た以外は、実施例2と同様にして無色透明のポリイミド
とした。
Example 7 In Example 2, instead of DDE, 2,2-bis [4
A colorless and transparent polyimide was prepared in the same manner as in Example 2 except that-(4-aminophenoxy) phenyl] sulfone was used.

【0051】得られたポリイミドは、N−メチル−2−
ピロリドン、N,N−ジメチルアセトアミド、1,3−
ジメチル−2−イミダゾリジノン、ピリジン、ジメチル
スルホキシドおよびm−クレゾールに可溶であった。
The obtained polyimide is N-methyl-2-
Pyrrolidone, N, N-dimethylacetamide, 1,3-
It was soluble in dimethyl-2-imidazolidinone, pyridine, dimethyl sulfoxide and m-cresol.

【0052】得られたポリアミック酸の相対固有粘度お
よびポリイミドの熱重量減少温度を表1に示す。
Table 1 shows the relative intrinsic viscosity of the obtained polyamic acid and the thermogravimetric reduction temperature of the polyimide.

【0053】実施例8 実施例1において、DDEに代えて、1,3−ビス(3
−アミノフェノキシ)ベンゼン(以下BABと略記す
る。)を用いた以外は、実施例1と同様にして無色透明
のポリイミドとした。
Example 8 In Example 1, 1,3-bis (3
A colorless transparent polyimide was prepared in the same manner as in Example 1 except that -aminophenoxy) benzene (hereinafter abbreviated as BAB) was used.

【0054】得られたポリアミック酸の相対固有粘度お
よびポリイミドの熱重量減少温度を表1に示す。
Table 1 shows the relative intrinsic viscosity of the obtained polyamic acid and the thermogravimetric reduction temperature of the polyimide.

【0055】[0055]

【表1】 [Table 1]

【0056】[0056]

【発明の効果】本発明によれば、繰返し単位の立体構造
が統一され、耐熱性が著しく向上されたポリイミドを得
ることができる。
Industrial Applicability According to the present invention, it is possible to obtain a polyimide in which the three-dimensional structures of repeating units are unified and the heat resistance is remarkably improved.

【図面の簡単な説明】[Brief description of drawings]

【図1】参考例1で得た3,5−シクロヘキサジエン−
trans−1,2−ジカルボン酸のIRスペクトルで
ある。
1] 3,5-cyclohexadiene-obtained in Reference Example 1
It is an IR spectrum of trans-1,2-dicarboxylic acid.

【図2】上記化合物の 1H−NMRスペクトルである。FIG. 2 is a 1 H-NMR spectrum of the above compound.

【図3】参考例1で得た3,5−シクロヘキサジエン−
trans−1,2−ジカルボン酸ジメチルのIRスペ
クトルである。
3 is the 3,5-cyclohexadiene-obtained in Reference Example 1. FIG.
1 is an IR spectrum of dimethyl trans-1,2-dicarboxylate.

【図4】上記化合物の 1H−NMRスペクトルである。FIG. 4 is a 1 H-NMR spectrum of the above compound.

【図5】参考例1で得た1rC7−ビシクロ[2.2.
2]オクト−7−エン−2t,3c,5c,6c−テト
ラカルボン酸テトラメチルのIRスペクトルである。
FIG. 5: 1rC7-bicyclo [2.2.
2] IR spectrum of oct-7-ene-2t, 3c, 5c, 6c-tetramethyl tetracarboxylate.

【図6】上記化合物の 1H−NMRスペクトルである。FIG. 6 is a 1 H-NMR spectrum of the above compound.

【図7】参考例2で得た1rC7−ビシクロ[2.2.
2]オクト−7−エン−2c,3c,5c,6c−テト
ラカルボン酸−2,3:5,6−二無水物のIRスペク
トルである。
FIG. 7 shows 1rC7-bicyclo [2.2.
2] It is an IR spectrum of Oct-7-ene-2c, 3c, 5c, 6c-tetracarboxylic acid-2,3: 5,6-dianhydride.

【図8】上記化合物の 1H−NMRスペクトルである。FIG. 8 is a 1 H-NMR spectrum of the above compound.

【図9】参考例3で得た1rC7−ビシクロ[2.2.
2]オクタン−2t,3c,5c,6c−テトラカルボ
ン酸テトラメチルのIRスペクトルである。
FIG. 9: 1rC7-bicyclo [2.2.
2] It is an IR spectrum of octane-2t, 3c, 5c, 6c-tetramethyl tetracarboxylate.

【図10】上記化合物の 1H−NMRスペクトルであ
る。
FIG. 10 is a 1 H-NMR spectrum of the above compound.

【図11】参考例3で得た1rC7−ビシクロ[2.
2.2]オクタン−2t,3t,5c,6c−テトラカ
ルボン酸−2,3:5,6−二無水物のIRスペクトル
である。
FIG. 11 shows 1rC7-bicyclo [2.
2.2] It is an IR spectrum of octane-2t, 3t, 5c, 6c-tetracarboxylic acid-2,3: 5,6-dianhydride.

【図12】上記化合物の 1H−NMRスペクトルであ
る。
FIG. 12 is a 1 H-NMR spectrum of the above compound.

【図13】参考例4で得た1rC7−ビシクロ[2.
2.2]オクタン−2c,3c,5c,6c−テトラカ
ルボン酸−2,3:5,6−二無水物のIRスペクトル
である。
FIG. 13 shows 1rC7-bicyclo [2.
2.2] It is an IR spectrum of octane-2c, 3c, 5c, 6c-tetracarboxylic acid-2,3: 5,6-dianhydride.

【図14】上記化合物の 1H−NMRスペクトルであ
る。
FIG. 14 is a 1 H-NMR spectrum of the above compound.

【図15】実施例2で得たポリイミドのIRスペクトル
である。
15 is an IR spectrum of the polyimide obtained in Example 2. FIG.

【図16】実施例3で得たポリイミドのIRスペクトル
である。
16 is an IR spectrum of the polyimide obtained in Example 3. FIG.

【図17】実施例4で得たポリイミドのIRスペクトル
である。
FIG. 17 is an IR spectrum of the polyimide obtained in Example 4.

【化12】 [Chemical 12]

───────────────────────────────────────────────────── フロントページの続き (72)発明者 西口 郁三 大阪府枚方市楠葉丘2−7−2 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Ikuzo Nishiguchi 2-7-2 Kusunoki, Hirakata-shi, Osaka

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 一般式[1] 【化1】 {式中、R1 およびR2 は水素原子、ハロゲン原子、メ
チル基またはハロゲン化メチル基であり、Zは炭素数
1〜4の直鎖または分枝のアルキレン基、炭素数2〜4
の直鎖または分枝のアルキリデン基、炭素数1〜4の直
鎖または分枝のハロゲン化アルキレン基、炭素数2〜4
の直鎖または分枝のハロゲン化アルキリデン基、−CO
−、−O−、−S−、−SO2 −、−CONH−または
単結合、下記一般式[2] 【化2】 (式中、R3 は水素原子、ハロゲン原子、メチル基また
はハロゲン化メチル基であり、X1 およびX2 は炭素数
1〜4の直鎖または分枝のアルキレン基、炭素数2〜4
の直鎖または分枝のアルキリデン基、炭素数1〜4の直
鎖または分枝のハロゲン化アルキレン基、炭素数2〜4
の直鎖または分枝のハロゲン化アルキリデン基、−CO
−、−O−、−S−、−SO2 −または単結合を示
す。)で表される二価の基または下記一般式[3] 【化3】 (式中、R4 およびR5 は水素原子、ハロゲン原子、メ
チル基またはハロゲン化メチル基であり、X3 、X4
よびX5 は炭素数1〜4の直鎖または分枝のアルキレン
基、炭素数2〜4の直鎖または分枝のアルキリデン基、
炭素数1〜4の直鎖または分枝のハロゲン化アルキレン
基、炭素数2〜4の直鎖または分枝のハロゲン化アルキ
リデン基、−CO−、−O−、−S−、−SO2 −また
は単結合を示す。)で表される二価の基を示す。}で表
される繰返し単位A、または一般式[4] 【化4】 (式中、R1 、R2 およびZは前記と同じ意味をも
つ。)で表される繰返し単位Bを有し、かつ、プレポリ
マーであるポリアミック酸の相対固有粘度が0.01〜
2.0であるポリイミド。
1. A general formula [1]: {In the formula, R 1 and R 2 are a hydrogen atom, a halogen atom, a methyl group or a halogenated methyl group, and Z is a linear or branched alkylene group having 1 to 4 carbon atoms, or 2 to 4 carbon atoms.
, A straight-chain or branched alkylidene group, a straight-chain or branched halogenated alkylene group having 1 to 4 carbon atoms, and 2 to 4 carbon atoms
A linear or branched halogenated alkylidene group, -CO
-, - O -, - S -, - SO 2 -, - CONH- , or a single bond, the following general formula [2] [Formula 2] (In the formula, R 3 is a hydrogen atom, a halogen atom, a methyl group or a halogenated methyl group, X 1 and X 2 are linear or branched alkylene groups having 1 to 4 carbon atoms, and 2 to 4 carbon atoms.
, A straight-chain or branched alkylidene group, a straight-chain or branched halogenated alkylene group having 1 to 4 carbon atoms, and 2 to 4 carbon atoms
A linear or branched halogenated alkylidene group, -CO
-, - O -, - S -, - shows a single bond or - SO 2. ) Or a divalent group represented by the following general formula [3] (In the formula, R 4 and R 5 are a hydrogen atom, a halogen atom, a methyl group or a halogenated methyl group, and X 3 , X 4 and X 5 are linear or branched alkylene groups having 1 to 4 carbon atoms, A linear or branched alkylidene group having 2 to 4 carbon atoms,
A straight-chain or branched halogenated alkylene group having 1 to 4 carbon atoms, a straight-chain or branched halogenated alkylidene group having 2 to 4 carbon atoms, -CO-, -O-, -S-, -SO 2-. Or a single bond is shown. ) Represents a divalent group represented by. } Or a repeating unit A represented by the general formula [4] (Wherein R 1 , R 2 and Z have the same meaning as described above) and the relative intrinsic viscosity of the polyamic acid as a prepolymer is 0.01 to
A polyimide that is 2.0.
JP11961094A 1994-05-09 1994-05-09 Polyimide Pending JPH07304868A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11961094A JPH07304868A (en) 1994-05-09 1994-05-09 Polyimide

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11961094A JPH07304868A (en) 1994-05-09 1994-05-09 Polyimide

Publications (1)

Publication Number Publication Date
JPH07304868A true JPH07304868A (en) 1995-11-21

Family

ID=14765681

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11961094A Pending JPH07304868A (en) 1994-05-09 1994-05-09 Polyimide

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Country Link
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TWI583688B (en) * 2016-06-06 2017-05-21 士峰科技股份有限公司 Method for preparing bicyclooctane tetracarboxylic dianhydride

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