JPH06188152A - Electrolytic solution for driving electronic capacitor and electrolytic capacitor using same - Google Patents
Electrolytic solution for driving electronic capacitor and electrolytic capacitor using sameInfo
- Publication number
- JPH06188152A JPH06188152A JP35587292A JP35587292A JPH06188152A JP H06188152 A JPH06188152 A JP H06188152A JP 35587292 A JP35587292 A JP 35587292A JP 35587292 A JP35587292 A JP 35587292A JP H06188152 A JPH06188152 A JP H06188152A
- Authority
- JP
- Japan
- Prior art keywords
- electrolytic
- solution
- acid
- electrolytic solution
- sec
- 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
Links
Landscapes
- Electric Double-Layer Capacitors Or The Like (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Description
【0001】[0001]
【産業上の利用分野】本発明は、電解コンデンサ駆動用
電解液およびそれを用いた電解コンデンサに関し、詳し
くは中高圧級用の電解コンデンサ駆動用電解液およびそ
れを用いた電解コンデンサに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrolytic solution for driving an electrolytic capacitor and an electrolytic capacitor using the electrolytic solution, and more particularly to an electrolytic solution for driving an electrolytic capacitor for medium and high voltage classes and an electrolytic capacitor using the electrolytic solution.
【0002】[0002]
【従来の技術】従来、特に中高圧級の電解コンデンサ駆
動用電解液としてはエチレングリコール−ほう酸系のも
のが用いられているが、この種の電解液はエチレングリ
コールとほう酸のエステル化により水が生成するため1
00℃以上では蒸気圧が高く、また電極であるアルミニ
ウムと反応しやすく高温での使用に適さなかった。この
ような欠点を改良するため、溶質として、総炭素数4〜
8の第1、第2級のモノカルボン酸(特公平4−196
91号公報)、脂肪族モノカルボン酸の四級アンモニウ
ム塩(特開昭62−248216号公報)等を用いる電
解液が提案されている。2. Description of the Related Art Conventionally, an ethylene glycol-boric acid type electrolyte has been used as an electrolytic solution for driving a medium- and high-voltage electrolytic capacitor. However, this type of electrolytic solution produces water by the esterification of ethylene glycol and boric acid. To generate 1
At 00 ° C or higher, the vapor pressure was high, and it was apt to react with aluminum as an electrode and was not suitable for use at high temperature. In order to improve such a defect, as a solute, a total carbon number of 4 to
No. 8 primary and secondary monocarboxylic acid (Japanese Patent Publication No. 4-196
91), a quaternary ammonium salt of an aliphatic monocarboxylic acid (JP-A-62-248216), and the like have been proposed.
【0003】[0003]
【発明が解決しようとする課題】しかしながら、近年さ
らに火花電圧および比電導度が高く、かつ高温放置時に
おける比電導度低下も小さく、また製造時やコンデンサ
開弁時の臭気もない、電解コンデンサ駆動用電解液およ
び長寿命で信頼性の高い電解コンデンサが求められてい
る。However, in recent years, the spark voltage and the specific conductivity are higher, and the decrease in the specific conductivity when left at high temperature is small, and there is no odor at the time of manufacturing or opening the capacitor. There is a demand for electrolytic solutions and long-life electrolytic capacitors with high reliability.
【0004】[0004]
【課題を解決するための手段】本発明者らは、上記課題
を解決するため鋭意検討した結果、特定の炭素数を持つ
第2級モノカルボン酸塩を電解質に用いれば、火花電圧
および比電導度が高く、かつ高温放置時における比電導
度低下も小さく、さらには臭気等の問題もない電解コン
デンサ駆動用電解液が得られることを見出し、本発明に
到達した。すなわち、本発明は、総炭素数9〜30の第
2級モノカルボン酸塩(A)とエチレングリコールから
なる電解コンデンサ駆動用電解液およびそれを使用した
電解コンデンサである。Means for Solving the Problems As a result of intensive studies for solving the above-mentioned problems, the present inventors have found that if a secondary monocarboxylic acid salt having a specific carbon number is used as an electrolyte, the spark voltage and the specific conductivity are increased. The inventors have found that an electrolytic solution for driving an electrolytic capacitor, which has a high degree of conductivity, a small decrease in specific electric conductivity when left at high temperature, and has no problem of odor and the like, can be obtained, and arrived at the present invention. That is, the present invention is an electrolytic capacitor driving electrolytic solution comprising a secondary monocarboxylic acid salt (A) having a total carbon number of 9 to 30 and ethylene glycol, and an electrolytic capacitor using the electrolytic solution.
【0005】[0005]
【作用】通常、カルボン酸の塩を用いた電解液の高温で
の劣化は、主に溶媒とカルボン酸のエステル化反応によ
って起こる。本発明の利点は総炭素数9〜30の第2級
のカルボキシル基を有するモノカルボン酸を用いること
にある。総炭素数を大きくとり、かつ第2級のカルボキ
シル基とすることで高火花電圧が得られる。さらに第2
級のカルボキシル基は、溶媒とのエステル化反応を起こ
しにくく、高温で安定な電解液が得られる。また低炭素
数のカルボン酸のような臭気の問題も解消される。これ
により火花電圧、比電導度、高温放置時における比電導
度低下、および臭気の問題が改善された電解液が得ら
れ、本発明の電解コンデンサ駆動用電解液を用いた電解
コンデンサは、静電容量、tanδの変化率が小さく、
従来のものに比べ長寿命で信頼性が極めて高いものとな
った。また、製造時やコンデンサ開弁時に不快臭がする
ことも無くなった。In general, deterioration of an electrolytic solution using a salt of a carboxylic acid at a high temperature mainly occurs due to an esterification reaction between a solvent and a carboxylic acid. An advantage of the present invention is that it uses a monocarboxylic acid having a secondary carboxyl group having 9 to 30 carbon atoms in total. A high spark voltage can be obtained by making the total carbon number large and using a secondary carboxyl group. And second
The high-grade carboxyl group hardly causes an esterification reaction with a solvent, and a stable electrolyte solution can be obtained at high temperature. Further, the problem of odor such as carboxylic acid having a low carbon number is solved. As a result, an electrolytic solution in which the spark voltage, the specific conductivity, the decrease in the specific conductivity when left at high temperature, and the problem of odor are improved is obtained, and the electrolytic capacitor using the electrolytic capacitor driving electrolytic solution of the present invention is The rate of change of capacity and tan δ is small,
It has a longer life and extremely higher reliability than conventional products. Also, there is no longer any unpleasant odor when manufacturing or opening the condenser.
【0006】[0006]
【実施例】以下、本発明の実施例について説明する。EXAMPLES Examples of the present invention will be described below.
【0007】本発明における総炭素数9〜30の第2級
モノカルボン酸塩(A)の第2級モノカルボン酸は、次
式の構造を有する。 式中R1、R2は例えば、メチル、エチル、プロピル、
ブチル、ヘキシル、オクチル、デシル、ペンタデシル等
のアルキル基、シクロペンチル、シクロヘキシル等のシ
クロアルキル基、フェニル、ベンジル等のアリール基等
の他、不飽和結合やヘテロ原子を含む置換基を表す(た
だしR1、R2ともにフェニル基のものを除く)。上記
の構造式を有する第2級モノカルボン酸の例としては、
例えば2−エチルヘプタン酸、2−メチルノナン酸、2
−プロピルヘプタン酸、2−エチルオクタン酸、2−ブ
チルカプロン酸、2−エチルデカン酸、2−ブチルノナ
ン酸、2−メチルアラキドン酸、2−フェニルプロピオ
ン酸、2−フェニル酪酸、2−フェノキシプロピオン
酸、2−フェノキシ酪酸、2−メトキシオクタン酸、2
−ブトキシカプロン酸、α−フェニルシクロペンタン酢
酸、ビス−(4−ヒドロキシフェニル)酢酸、ビス−
(4−メトキシフェニル)酢酸が挙げられる。The secondary monocarboxylic acid of the secondary monocarboxylic acid salt (A) having a total carbon number of 9 to 30 in the present invention has a structure of the following formula. In the formula, R1 and R2 are, for example, methyl, ethyl, propyl,
In addition to alkyl groups such as butyl, hexyl, octyl, decyl, and pentadecyl, cycloalkyl groups such as cyclopentyl and cyclohexyl, aryl groups such as phenyl and benzyl, and a substituent containing an unsaturated bond or a hetero atom (provided that R1, R2 is not phenyl group). Examples of secondary monocarboxylic acids having the above structural formula include:
For example, 2-ethylheptanoic acid, 2-methylnonanoic acid, 2
-Propylheptanoic acid, 2-ethyloctanoic acid, 2-butylcaproic acid, 2-ethyldecanoic acid, 2-butylnonanoic acid, 2-methylarachidonic acid, 2-phenylpropionic acid, 2-phenylbutyric acid, 2-phenoxypropionic acid, 2-phenoxybutyric acid, 2-methoxyoctanoic acid, 2
-Butoxycaproic acid, α-phenylcyclopentaneacetic acid, bis- (4-hydroxyphenyl) acetic acid, bis-
(4-methoxyphenyl) acetic acid may be mentioned.
【0008】これらの中で好ましいのは、2−エチルヘ
プタン酸、2−メチルノナン酸、2−エチルオクタン
酸、2−プロピルヘプタン酸、2−エチルデカン酸、2
−ブチルノナン酸等のアルキル基で構成されたものであ
る。Of these, preferred are 2-ethylheptanoic acid, 2-methylnonanoic acid, 2-ethyloctanoic acid, 2-propylheptanoic acid, 2-ethyldecanoic acid and 2
-Butylnonanoic acid and other alkyl groups.
【0009】第2級モノカルボン酸の総炭素数は9〜3
0、好ましくは9〜20、さらに好ましくは9〜13で
あり、特に好ましくは10〜13である。総炭素数が3
0を越えると電解液溶媒への溶解性が低下する。溶解性
の点で9〜20が好ましい。さらに火花電圧と比電導度
のバランスを考えると、総炭素数9〜13のものが好ま
しく、特に10〜13のものが好ましい。The total carbon number of the secondary monocarboxylic acid is 9 to 3
0, preferably 9 to 20, more preferably 9 to 13, and particularly preferably 10 to 13. Total carbon number is 3
If it exceeds 0, the solubility in the electrolyte solvent decreases. From the viewpoint of solubility, 9 to 20 is preferable. Further, considering the balance between the spark voltage and the specific electric conductivity, those having a total carbon number of 9 to 13 are preferable, and those having a total carbon number of 10 to 13 are particularly preferable.
【0010】第2級モノカルボン酸塩(A)としては、
第2級モノカルボン酸のアンモニウム塩、アミン塩およ
び4級アンモニウム塩が挙げられる。アミン塩を構成す
るアミンとしては1級アミン(メチルアミン、エチルア
ミン、プロピルアミン、ブチルアミン、エチレンジアミ
ン等)、2級アミン(ジメチルアミン、ジエチルアミ
ン、ジプロピルアミン、メチルエチルアミン、ジフェニ
ルアミン等)、3級アミン(トリメチルアミン、トリエ
チルアミン、トリプロピルアミン、トリフェニルアミ
ン、1,8−ジアザビシクロ(5,4,0)−ウンデセ
ン−7等)が挙げられる。第4級アンモニウム塩を構成
する第4級アンモニウムとしてはテトラアルキルアンモ
ニウム(テトラメチルアンモニウム、テトラエチルアン
モニウム、テトラプロピルアンモニウム、テトラブチル
アンモニウム、メチルトリエチルアンモニウム、ジメチ
ルジエチルアンモニウム等)、ピリジウム(1-メチル
ピリジウム、1-エチルピリジウム、1,3-ジエチルピ
リジウム等)が挙げられる。これらのうちで好ましいも
のはアンモニウム塩およびアミン塩であり、特に好まし
いものはアンモニウム塩である。As the secondary monocarboxylic acid salt (A),
Examples thereof include ammonium salts, amine salts and quaternary ammonium salts of secondary monocarboxylic acids. As amines constituting the amine salt, primary amines (methylamine, ethylamine, propylamine, butylamine, ethylenediamine, etc.), secondary amines (dimethylamine, diethylamine, dipropylamine, methylethylamine, diphenylamine, etc.), tertiary amines ( Trimethylamine, triethylamine, tripropylamine, triphenylamine, 1,8-diazabicyclo (5,4,0) -undecene-7 and the like) can be mentioned. Examples of the quaternary ammonium constituting the quaternary ammonium salt include tetraalkylammonium (tetramethylammonium, tetraethylammonium, tetrapropylammonium, tetrabutylammonium, methyltriethylammonium, dimethyldiethylammonium, etc.), pyridium (1-methylpyridinium). 1-ethylpyridinium, 1,3-diethylpyridinium and the like). Among these, preferred are ammonium salts and amine salts, and particularly preferred are ammonium salts.
【0011】第2級モノカルボン酸塩(A)を形成する
酸と塩基のモル比は通常1:2〜1:0.5、好ましく
は1:1.2〜1:0.8である。The molar ratio of the acid forming the secondary monocarboxylic acid salt (A) to the base is usually 1: 2 to 1: 0.5, preferably 1: 1.2 to 1: 0.8.
【0012】本発明の電解コンデンサ駆動用電解液は溶
媒としてエチレングリコールとともに他の溶媒を併用で
きる。併用できる溶媒としては多価アルコール系溶剤
(プロピレングリコール、ジエチレングリコール、1,
4-ブタンジオール、グリセリン、ポリオキシアルキレ
ンポリオール等)、ラクトン系溶剤(γ-ブチロラクト
ン、γ-バレロラクトン、δ-バレロラクトン、3-メチ
ル-1,3-オキサゾリジン-2-オン、3-エチル-1,3-
オキサゾリジン-2-オン等)、アミド系溶剤(N-メチ
ルホルムアミド、N,N-ジメチルホルムアミド、N-メ
チルアセトアミド、N-メチルピロジリノン等)、エー
テル系溶剤(メチラール、1,2-ジメトキシエタン、1
-エトキシ-2-メトキシエタン、1,2-ジエトキシエタ
ン等)、ニトリル系溶剤(アセトニトリル、3-メトキ
シプロピオニトリル等)、フラン系溶剤(2,5-ジメト
キシテトラヒドロフラン等)、2-イミダゾリジノン類
(1,3-ジメチル-2-イミダゾリジノン等)、ピロリド
ン類およびこれらの混合物等が挙げられる。溶媒中にお
けるエチレングリコールの含有量は溶媒の重量に基づい
て、通常60重量%以上、好ましくは80重量%以上で
ある。In the electrolytic capacitor driving electrolytic solution of the present invention, other solvent can be used together with ethylene glycol as a solvent. Solvents that can be used in combination include polyhydric alcohol solvents (propylene glycol, diethylene glycol, 1,
4-butanediol, glycerin, polyoxyalkylene polyol, etc., lactone solvent (γ-butyrolactone, γ-valerolactone, δ-valerolactone, 3-methyl-1,3-oxazolidin-2-one, 3-ethyl- 1,3-
Oxazolidin-2-one, etc., amide solvents (N-methylformamide, N, N-dimethylformamide, N-methylacetamide, N-methylpyrrolidinone, etc.), ether solvents (methylal, 1,2-dimethoxyethane) 1
-Ethoxy-2-methoxyethane, 1,2-diethoxyethane, etc.), nitrile-based solvents (acetonitrile, 3-methoxypropionitrile, etc.), furan-based solvents (2,5-dimethoxytetrahydrofuran, etc.), 2-imidazolide Examples thereof include nonones (1,3-dimethyl-2-imidazolidinone and the like), pyrrolidones and mixtures thereof. The content of ethylene glycol in the solvent is usually 60% by weight or more, preferably 80% by weight or more, based on the weight of the solvent.
【0013】本発明の電解コンデンサ駆動用電解液は必
要により、水を含有させることができる。その含有量は
電解液の重量に基づいて通常20重量%以下、好ましく
は5重量%以下、特に好ましくは1重量%以下である。The electrolytic solution for driving the electrolytic capacitor of the present invention may contain water, if necessary. Its content is usually 20% by weight or less, preferably 5% by weight or less, particularly preferably 1% by weight or less, based on the weight of the electrolytic solution.
【0014】本発明の電解コンデンサ駆動用電解液にお
ける第2級モノカルボン酸塩(A)の含有量は、電解液
の重量に基づいて通常1〜70重量%、好ましくは5〜
40重量%である。The content of the secondary monocarboxylic acid salt (A) in the electrolytic capacitor driving electrolytic solution of the present invention is usually 1 to 70% by weight, preferably 5 to 5% by weight based on the weight of the electrolytic solution.
It is 40% by weight.
【0015】本発明の電解コンデンサ駆動用電解液に
は、漏れ電流の低減や水素ガス吸収等の目的で種々の添
加剤を添加することができる。添加剤としては、例えば
リン酸誘導体、ホウ酸誘導体およびニトロ化合物を挙げ
ることができる。Various additives can be added to the electrolytic capacitor driving electrolytic solution of the present invention for the purpose of reducing leakage current and absorbing hydrogen gas. Examples of the additives include phosphoric acid derivatives, boric acid derivatives and nitro compounds.
【0016】次に、本発明の具体的な実施例について説
明するが、本発明はこれに限定されるものではない。表
1に本発明の実施例1〜5および従来例1〜2の電解液
組成を示す。実施例1〜5のものは、調整時殆ど臭気の
問題はなかったが、比較例1および2のものは、酸に由
来する不快臭が発生した。Next, specific examples of the present invention will be described, but the present invention is not limited thereto. Table 1 shows the electrolytic solution compositions of Examples 1 to 5 of the present invention and Conventional Examples 1 and 2. The samples of Examples 1 to 5 had almost no odor problem at the time of adjustment, whereas the samples of Comparative Examples 1 and 2 had an unpleasant odor derived from the acid.
【0017】[0017]
【表1】 [Table 1]
【0018】表2は本発明の実施例1〜5および従来例
1〜2の電解液の火花電圧、比電導度(30゜C)、お
よび125゜C×1000時間後の比電導度低下率を示
したものである。Table 2 shows the spark voltage, the specific electric conductivity (30 ° C) of the electrolytic solutions of Examples 1 to 5 of the present invention and the conventional Examples 1 and 2, and the decrease rate of the specific electric conductivity after 125 ° C x 1000 hours. Is shown.
【0019】[0019]
【表2】 [Table 2]
【0020】表2から明らかなように本発明の実施例1
〜5の電解液は、従来例1〜2の電解液と比較して火花
電圧が高く、比電導度も2mS/cm以上の良好なレベ
ルであり、かつ比電導度低下率も小さく、各性能のバラ
ンスが優れている。As is clear from Table 2, Example 1 of the present invention
The electrolytic solutions of Nos. 5 to 5 have a higher spark voltage than the electrolytic solutions of Conventional Examples 1 to 2 and have a good specific electric conductivity of 2 mS / cm or more, and a low specific electric conductivity decrease rate. The balance of is excellent.
【0021】表3は、表1に示した本発明の実施例1〜
5の電解液を使用したアルミ電解コンデンサ(定格45
0V、220μF)の125℃における寿命試験での特
性変化を示したものである。なお、従来例1〜2の電解
液は火花電圧が低いため、本定格電圧のアルミ電解コン
デンサへは適用できなかった。Table 3 shows Examples 1 to 1 of the present invention shown in Table 1.
Aluminum electrolytic capacitor using the electrolytic solution of 5 (rating 45
This is a graph showing characteristic changes in a life test of 0 V, 220 μF) at 125 ° C. Since the electrolytic solutions of Conventional Examples 1 and 2 have a low spark voltage, they could not be applied to aluminum electrolytic capacitors having this rated voltage.
【0022】[0022]
【表3】 [Table 3]
【0023】表3から明らかなように、本発明の実施例
1〜5の電解液を使用したアルミ電解コンデンサは静電
容量変化、tanδ(損失角の正接)変化のいずれもが
小さく、寿命特性に優れた信頼性の高いアルミ電解コン
デンサである。As is clear from Table 3, the aluminum electrolytic capacitors using the electrolytic solutions of Examples 1 to 5 of the present invention have small changes in capacitance and changes in tan δ (tangent of loss angle), and have life characteristics. It is a highly reliable aluminum electrolytic capacitor.
【0024】[0024]
【発明の効果】以上のように本発明の電解コンデンサ駆
動用電解液は、火花電圧が高く、比電導度も良好であ
り、かつ高温放置時における比電導度低下も小さく、臭
気の問題も無い。このため、本発明の電解液を中高圧級
電解コンデンサに用いれば、その電解コンデンサの長寿
命化、高信頼化が可能となり、製造時や開弁時の不快臭
の問題もなく、工業価値の大なるものである。As described above, the electrolytic solution for driving an electrolytic capacitor of the present invention has a high spark voltage, a good specific electric conductivity, a small decrease in the specific electric conductivity when left at high temperature, and no odor problem. . Therefore, when the electrolytic solution of the present invention is used in a medium-high voltage class electrolytic capacitor, the electrolytic capacitor can have a long life and high reliability, and there is no problem of unpleasant odor during manufacturing or valve opening, and it has an industrial value. It is great.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 紀氏 隆明 京都市東山区一橋野本町11番地の1 三洋 化成工業株式会社内 (72)発明者 塩野 和司 京都市東山区一橋野本町11番地の1 三洋 化成工業株式会社内 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Takaaki Kiyoshi 1 1-11, Hitotsubashi-honmachi, Higashiyama-ku, Kyoto Sanyo Chemical Industry Co., Ltd. Kasei Industry Co., Ltd.
Claims (3)
酸塩(A)とエチレングリコールからなる電解コンデン
サ駆動用電解液。1. An electrolytic solution for driving an electrolytic capacitor, which comprises a secondary monocarboxylic acid salt (A) having a total carbon number of 9 to 30 and ethylene glycol.
数9〜30の第2級モノカルボン酸アンモニウムである
請求項1記載の電解コンデンサ駆動用電解液。2. The electrolytic solution for driving an electrolytic capacitor according to claim 1, wherein the secondary monocarboxylic acid salt (A) is a secondary ammonium monocarboxylic acid having a total carbon number of 9 to 30.
駆動用電解液を用いた電解コンデンサ。3. An electrolytic capacitor using the electrolytic solution for driving an electrolytic capacitor according to claim 1.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP35587292A JP3304459B2 (en) | 1992-12-18 | 1992-12-18 | Electrolytic solution for driving electrolytic capacitor and electrolytic capacitor using the same |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP35587292A JP3304459B2 (en) | 1992-12-18 | 1992-12-18 | Electrolytic solution for driving electrolytic capacitor and electrolytic capacitor using the same |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH06188152A true JPH06188152A (en) | 1994-07-08 |
JP3304459B2 JP3304459B2 (en) | 2002-07-22 |
Family
ID=18446163
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP35587292A Expired - Lifetime JP3304459B2 (en) | 1992-12-18 | 1992-12-18 | Electrolytic solution for driving electrolytic capacitor and electrolytic capacitor using the same |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3304459B2 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0778820A1 (en) | 1994-08-30 | 1997-06-18 | American Biogenetic Sciences, Inc. | Neurotrophic and antiproliferative compounds |
US6268396B1 (en) | 1998-06-22 | 2001-07-31 | American Biogenetic Sciences, Inc. | Use of valproic acid analog for the treatment and prevention of migraine and affective illness |
USRE37670E1 (en) | 1994-08-30 | 2002-04-23 | American Biogenetics Inc. | Antiproliferative and neurotrophic molecules |
US7176240B2 (en) | 1993-06-01 | 2007-02-13 | Ono Pharmaceutical Co., Ltd. | Pentanoic acid derivatives |
-
1992
- 1992-12-18 JP JP35587292A patent/JP3304459B2/en not_active Expired - Lifetime
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7176240B2 (en) | 1993-06-01 | 2007-02-13 | Ono Pharmaceutical Co., Ltd. | Pentanoic acid derivatives |
US7569609B2 (en) | 1993-06-01 | 2009-08-04 | Ono Pharmaceutical Co., Ltd. | Pentanoic acid derivatives |
US7569608B2 (en) | 1993-06-01 | 2009-08-04 | Ono Pharmaceutical Co., Ltd. | Pentanoic acid derivatives |
US6300373B1 (en) | 1993-09-10 | 2001-10-09 | American Biogenetic Sciences, Inc. | Antiproliferative and neurotrophic molecules |
EP0778820A1 (en) | 1994-08-30 | 1997-06-18 | American Biogenetic Sciences, Inc. | Neurotrophic and antiproliferative compounds |
USRE37670E1 (en) | 1994-08-30 | 2002-04-23 | American Biogenetics Inc. | Antiproliferative and neurotrophic molecules |
US6268396B1 (en) | 1998-06-22 | 2001-07-31 | American Biogenetic Sciences, Inc. | Use of valproic acid analog for the treatment and prevention of migraine and affective illness |
US6458840B2 (en) | 1998-06-22 | 2002-10-01 | American Biogenetic Sciences, Inc. | Use of valproic acid analog for the treatment and prevention of migraine and affective illness |
Also Published As
Publication number | Publication date |
---|---|
JP3304459B2 (en) | 2002-07-22 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US20090147444A1 (en) | Electrolytic solution for electrolytic capacitor and electrolytic capacitor using the same | |
US7163643B2 (en) | Driving electrolyte and electrolytic capacitor using the same | |
US4762630A (en) | Electrolyte for electrolytic capacitor | |
JPH06188152A (en) | Electrolytic solution for driving electronic capacitor and electrolytic capacitor using same | |
JP2001076974A (en) | Electrolytic solution for electrolytic capacitor | |
JP3373889B2 (en) | Electrolytic solution for driving electrolytic capacitor and electrolytic capacitor using the same | |
US4762632A (en) | Electrolyte for electrolytic capacitor | |
JP6399466B2 (en) | Electrolytic capacitor driving electrolyte and electrolytic capacitor using the same | |
JP2005005336A (en) | Electrolyte for driving electrolytic capacitor, and electrolytic capacitor using the same | |
JPH0684705A (en) | Electrolytic solution for driving electrolytic capacitor and electrolytic capacitor using it | |
JP3172204B2 (en) | Electrolyte for driving electrolytic capacitors | |
JPH06302475A (en) | Electrolyte for electrolytic capacitor | |
JPH07118432B2 (en) | Electrolytic solution for driving electrolytic capacitors | |
JP5488998B2 (en) | Electrolytic solution for driving electrolytic capacitor and electrolytic capacitor using the same | |
JP2002110469A (en) | Electrolyte for electrolytic capacitor | |
JP3175330B2 (en) | Electrolyte for driving electrolytic capacitors | |
JPH0770444B2 (en) | Electrolytic solution for driving electrolytic capacitors | |
JP2005019671A (en) | Electrolyte for drive and electrolytic capacitor using it | |
JPH07120615B2 (en) | Electrolytic solution for driving electrolytic capacitors | |
JP2000138136A (en) | Electrolyte for electrolytic capacitor | |
JPH05291082A (en) | Electrolytic capacitor driving electrolytic solution and electrolytic capacitor provided therewith | |
JP2001068382A (en) | Electrolyte solution for electrolytic capacitor | |
JP2021086870A (en) | Electrolyte solution for driving electrolytic capacitor, and electrolytic capacitor arranged to use the same | |
JP2005039246A (en) | Electrolyte for driving and electrolytic capacitor using the same | |
JP2774525B2 (en) | Electrolyte for electrolytic capacitors |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090510 Year of fee payment: 7 |
|
FPAY | Renewal fee payment (prs date is renewal date of database) |
Year of fee payment: 8 Free format text: PAYMENT UNTIL: 20100510 |
|
FPAY | Renewal fee payment (prs date is renewal date of database) |
Year of fee payment: 9 Free format text: PAYMENT UNTIL: 20110510 |
|
FPAY | Renewal fee payment (prs date is renewal date of database) |
Year of fee payment: 10 Free format text: PAYMENT UNTIL: 20120510 |
|
FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20120510 Year of fee payment: 10 |
|
FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130510 Year of fee payment: 11 |
|
EXPY | Cancellation because of completion of term | ||
FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130510 Year of fee payment: 11 |