JPH07211589A - Electrolytic solution for electrolytic capacitor - Google Patents
Electrolytic solution for electrolytic capacitorInfo
- Publication number
- JPH07211589A JPH07211589A JP1493694A JP1493694A JPH07211589A JP H07211589 A JPH07211589 A JP H07211589A JP 1493694 A JP1493694 A JP 1493694A JP 1493694 A JP1493694 A JP 1493694A JP H07211589 A JPH07211589 A JP H07211589A
- Authority
- JP
- Japan
- Prior art keywords
- acid
- electrolytic
- electrolytic solution
- electrolytic capacitor
- capacitor
- 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
Links
- 239000003990 capacitor Substances 0.000 title claims abstract description 32
- 239000008151 electrolyte solution Substances 0.000 title claims abstract description 19
- -1 organic acid salt Chemical class 0.000 claims abstract description 22
- 150000007524 organic acids Chemical class 0.000 claims abstract description 7
- 239000002253 acid Substances 0.000 claims abstract description 6
- 150000005846 sugar alcohols Polymers 0.000 claims abstract description 5
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 claims abstract description 4
- 239000002904 solvent Substances 0.000 claims abstract description 4
- 239000004327 boric acid Substances 0.000 claims abstract description 3
- YDONNITUKPKTIG-UHFFFAOYSA-N [Nitrilotris(methylene)]trisphosphonic acid Chemical compound OP(O)(=O)CN(CP(O)(O)=O)CP(O)(O)=O YDONNITUKPKTIG-UHFFFAOYSA-N 0.000 claims description 8
- BTBUEUYNUDRHOZ-UHFFFAOYSA-N Borate Chemical compound [O-]B([O-])[O-] BTBUEUYNUDRHOZ-UHFFFAOYSA-N 0.000 claims description 2
- 230000007797 corrosion Effects 0.000 abstract description 7
- 238000005260 corrosion Methods 0.000 abstract description 7
- FSYKKLYZXJSNPZ-UHFFFAOYSA-N N-methylaminoacetic acid Natural products C[NH2+]CC([O-])=O FSYKKLYZXJSNPZ-UHFFFAOYSA-N 0.000 abstract description 4
- 108010077895 Sarcosine Proteins 0.000 abstract description 4
- 230000007547 defect Effects 0.000 abstract description 4
- 229940043230 sarcosine Drugs 0.000 abstract description 4
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 6
- 239000011888 foil Substances 0.000 description 4
- 239000012535 impurity Substances 0.000 description 4
- WWZKQHOCKIZLMA-UHFFFAOYSA-N octanoic acid Chemical compound CCCCCCCC(O)=O WWZKQHOCKIZLMA-UHFFFAOYSA-N 0.000 description 4
- CXMXRPHRNRROMY-UHFFFAOYSA-N sebacic acid Chemical compound OC(=O)CCCCCCCCC(O)=O CXMXRPHRNRROMY-UHFFFAOYSA-N 0.000 description 4
- KCKPRRSVCFWDPX-UHFFFAOYSA-N 2-[methyl(pentyl)amino]acetic acid Chemical compound CCCCCN(C)CC(O)=O KCKPRRSVCFWDPX-UHFFFAOYSA-N 0.000 description 3
- BTVWZWFKMIUSGS-UHFFFAOYSA-N 2-methylpropane-1,2-diol Chemical compound CC(C)(O)CO BTVWZWFKMIUSGS-UHFFFAOYSA-N 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 3
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 3
- 235000005985 organic acids Nutrition 0.000 description 3
- 239000005635 Caprylic acid (CAS 124-07-2) Substances 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- WPYMKLBDIGXBTP-UHFFFAOYSA-N benzoic acid Chemical compound OC(=O)C1=CC=CC=C1 WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 description 2
- WERYXYBDKMZEQL-UHFFFAOYSA-N butane-1,4-diol Chemical compound OCCCCO WERYXYBDKMZEQL-UHFFFAOYSA-N 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- XBDQKXXYIPTUBI-UHFFFAOYSA-N dimethylselenoniopropionate Natural products CCC(O)=O XBDQKXXYIPTUBI-UHFFFAOYSA-N 0.000 description 2
- TVIDDXQYHWJXFK-UHFFFAOYSA-N dodecanedioic acid Chemical compound OC(=O)CCCCCCCCCCC(O)=O TVIDDXQYHWJXFK-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- MNWFXJYAOYHMED-UHFFFAOYSA-N heptanoic acid Chemical compound CCCCCCC(O)=O MNWFXJYAOYHMED-UHFFFAOYSA-N 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- FBUKVWPVBMHYJY-UHFFFAOYSA-N nonanoic acid Chemical compound CCCCCCCCC(O)=O FBUKVWPVBMHYJY-UHFFFAOYSA-N 0.000 description 2
- 229960002446 octanoic acid Drugs 0.000 description 2
- XNGIFLGASWRNHJ-UHFFFAOYSA-N phthalic acid Chemical compound OC(=O)C1=CC=CC=C1C(O)=O XNGIFLGASWRNHJ-UHFFFAOYSA-N 0.000 description 2
- YPFDHNVEDLHUCE-UHFFFAOYSA-N propane-1,3-diol Chemical compound OCCCO YPFDHNVEDLHUCE-UHFFFAOYSA-N 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- CYIDZMCFTVVTJO-UHFFFAOYSA-N pyromellitic acid Chemical compound OC(=O)C1=CC(C(O)=O)=C(C(O)=O)C=C1C(O)=O CYIDZMCFTVVTJO-UHFFFAOYSA-N 0.000 description 2
- TYFQFVWCELRYAO-UHFFFAOYSA-N suberic acid Chemical compound OC(=O)CCCCCCC(O)=O TYFQFVWCELRYAO-UHFFFAOYSA-N 0.000 description 2
- RJKGJBPXVHTNJL-UHFFFAOYSA-N 1-nitronaphthalene Chemical compound C1=CC=C2C([N+](=O)[O-])=CC=CC2=C1 RJKGJBPXVHTNJL-UHFFFAOYSA-N 0.000 description 1
- IDEOPBXRUBNYBN-UHFFFAOYSA-N 2-methylbutane-2,3-diol Chemical compound CC(O)C(C)(C)O IDEOPBXRUBNYBN-UHFFFAOYSA-N 0.000 description 1
- 239000005711 Benzoic acid Substances 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 description 1
- RTXZGFRVHHBBLX-UHFFFAOYSA-N C(CCCCC(CCCC)C(=O)O)C(=O)O.C(CCCCC(CCCC)C(=O)O)C(=O)O Chemical compound C(CCCCC(CCCC)C(=O)O)C(=O)O.C(CCCCC(CCCC)C(=O)O)C(=O)O RTXZGFRVHHBBLX-UHFFFAOYSA-N 0.000 description 1
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 1
- DGEZNRSVGBDHLK-UHFFFAOYSA-N [1,10]phenanthroline Chemical compound C1=CN=C2C3=NC=CC=C3C=CC2=C1 DGEZNRSVGBDHLK-UHFFFAOYSA-N 0.000 description 1
- 239000001361 adipic acid Substances 0.000 description 1
- 235000011037 adipic acid Nutrition 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 235000010233 benzoic acid Nutrition 0.000 description 1
- HNEGQIOMVPPMNR-IHWYPQMZSA-N citraconic acid Chemical compound OC(=O)C(/C)=C\C(O)=O HNEGQIOMVPPMNR-IHWYPQMZSA-N 0.000 description 1
- 229940018557 citraconic acid Drugs 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- XDCGMERNCDEEBW-UHFFFAOYSA-N diazanium;2-nonylpropanedioate Chemical compound [NH4+].[NH4+].CCCCCCCCCC(C([O-])=O)C([O-])=O XDCGMERNCDEEBW-UHFFFAOYSA-N 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 description 1
- 239000011976 maleic acid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- VBEGHXKAFSLLGE-UHFFFAOYSA-N n-phenylnitramide Chemical compound [O-][N+](=O)NC1=CC=CC=C1 VBEGHXKAFSLLGE-UHFFFAOYSA-N 0.000 description 1
- MGFYIUFZLHCRTH-UHFFFAOYSA-N nitrilotriacetic acid Chemical compound OC(=O)CN(CC(O)=O)CC(O)=O MGFYIUFZLHCRTH-UHFFFAOYSA-N 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- ZWLPBLYKEWSWPD-UHFFFAOYSA-N o-toluic acid Chemical compound CC1=CC=CC=C1C(O)=O ZWLPBLYKEWSWPD-UHFFFAOYSA-N 0.000 description 1
- 235000019260 propionic acid Nutrition 0.000 description 1
- IUVKMZGDUIUOCP-BTNSXGMBSA-N quinbolone Chemical compound O([C@H]1CC[C@H]2[C@H]3[C@@H]([C@]4(C=CC(=O)C=C4CC3)C)CC[C@@]21C)C1=CCCC1 IUVKMZGDUIUOCP-BTNSXGMBSA-N 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 1
- WYXIGTJNYDDFFH-UHFFFAOYSA-Q triazanium;borate Chemical compound [NH4+].[NH4+].[NH4+].[O-]B([O-])[O-] WYXIGTJNYDDFFH-UHFFFAOYSA-Q 0.000 description 1
Landscapes
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は電解コンデンサ用電解液
に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrolytic solution for electrolytic capacitors.
【０００２】[0002]
【従来の技術】近年、電解コンデンサは寿命の保証期間
が長くなってきている。そしてそれに伴い、電解コンデ
ンサを構成している電極箔や電解液、電解紙などに含ま
れる不純物の許容量の規準も厳しくなっている。2. Description of the Related Art In recent years, electrolytic capacitors have a long life guarantee period. Along with this, the criteria for the allowable amount of impurities contained in the electrode foil, the electrolytic solution, the electrolytic paper, etc. that constitute the electrolytic capacitor have become stricter.
【０００３】しかし、製造工程中に偶発的に不純物が電
解液中等に混入したり、電解コンデンサを洗浄する際や
電解コンデンサを使用する雰囲気によっては、キャップ
を通して不純物が内部に入り込む。However, impurities are accidentally mixed into the electrolytic solution or the like during the manufacturing process, or impurities are introduced into the inside through the cap depending on the cleaning of the electrolytic capacitor or the atmosphere in which the electrolytic capacitor is used.
【０００４】このうち、塩化物イオン等の腐食性の強い
不純物は、少量であっても加速的に腐食反応を進行させ
る。そのため、電解コンデンサは、比較的短時間のうち
に漏れ電流（以下ＬＣという）が増大し、これに伴って
ガス発生が増大し、内圧が上昇して防爆弁が作動する。
また、電解コンデンサは、時には端子と電極箔とを接続
するリード部分が集中的に腐食し、断線不良を生じるこ
とがある。Of these, highly corrosive impurities such as chloride ions accelerate the corrosion reaction even in a small amount. Therefore, in the electrolytic capacitor, the leakage current (hereinafter referred to as LC) increases within a relatively short time, gas generation increases accordingly, and the internal pressure rises to operate the explosion-proof valve.
Further, in the electrolytic capacitor, sometimes the lead portion connecting the terminal and the electrode foil is corroded intensively, which may cause disconnection failure.
【０００５】従来、この腐食反応が進行して防爆弁が作
動したり断線不良を生じるのを防止するために、各種の
窒素含有化合物を添加した電解コンデンサ用電解液が考
えられている。例えば、この窒素含有化合物としては、
特開昭６０−１６９１２８号には１，１０−フェナント
ロリン、特開昭６１−１９１０１１号にはニトリロ三酢
酸、特開昭６２−２６８１２０号にはニトロアニリンそ
して特開平２−５４９２０号にはニトロナフタレンスル
ホン酸等が各々記載されている。Conventionally, in order to prevent the explosion-proof valve from operating and causing disconnection failure due to the progress of this corrosion reaction, an electrolytic solution for electrolytic capacitors containing various nitrogen-containing compounds has been considered. For example, as the nitrogen-containing compound,
1,10-phenanthroline in JP-A-60-169128, nitrilotriacetic acid in JP-A-61-191011, nitroaniline in JP-A-62-268120, and nitronaphthalene in JP-A-2-54920. Sulfonic acid and the like are listed respectively.
【０００６】[0006]
【発明が解決しようとする課題】しかし、窒素含有化合
物を添加した電解コンデンサ用電解液は、腐食反応以外
の作用により電解コンデンサのＬＣを著しく増大させ、
その寿命を短かくする欠点がある。However, the electrolytic solution for electrolytic capacitors to which the nitrogen-containing compound is added remarkably increases the LC of the electrolytic capacitor by an action other than the corrosion reaction,
It has the drawback of shortening its life.
【０００７】本発明の目的は、以上の欠点を改良し、電
解コンデンサのＬＣの増大を抑え、腐食による断線不良
を防止し、寿命を向上できる電解コンデンサ用電解液を
提供するものである。An object of the present invention is to provide an electrolytic solution for an electrolytic capacitor, which improves the above-mentioned drawbacks, suppresses the increase of LC of the electrolytic capacitor, prevents disconnection failure due to corrosion, and extends the life.
【０００８】[0008]
【課題を解決するための手段】本発明は、上記の目的を
達成するために、多価アルコールを主成分とする溶媒
に、有機酸、有機酸塩、ホウ酸またはホウ酸塩のうちの
一種類以上を溶解した電解コンデンサ用電解液におい
て、ポリメチレンビスホスホン酸、アミノトリメチレン
ホスホン酸またはアシルサルコシンの一種類以上を含有
することを特徴とする電解コンデンサ用電解液を提供す
るものである。In order to achieve the above object, the present invention provides a solvent containing a polyhydric alcohol as a main component, one of an organic acid, an organic acid salt, boric acid or a borate. An electrolytic solution for an electrolytic capacitor, which comprises one or more kinds of polymethylene bisphosphonic acid, aminotrimethylene phosphonic acid or acyl sarcosine in an electrolytic solution for an electrolytic capacitor in which more than one kind is dissolved.
【０００９】多価アルコールは、エチレングリコールや
ジエチレングリコール、プロピレングリコール、１，４
−ブタンジオール、トリメチルエチレングリコール、ペ
ンタグリセロール、トリメチレングリコール、イソブチ
レングリコール（２−メチル−１，２−プロパンジオー
ル）等を用いる。Polyhydric alcohols include ethylene glycol, diethylene glycol, propylene glycol, 1,4
-Butanediol, trimethylethylene glycol, pentaglycerol, trimethylene glycol, isobutylene glycol (2-methyl-1,2-propanediol) and the like are used.
【００１０】また、これ等の多価アルコールの個々の物
質あるいは二種類以上を組合わせたものに溶解する有機
酸としては、プロピオン酸やエナント酸、カプリル酸、
ｎ−ノナン酸等の脂肪族モノカルボン酸類、アジピン酸
やスベリン酸、セバシン酸、１，１０−デカンジカルボ
ン酸、１，６−デカンジカルボン酸（ブチルオクタン二
酸）、マレイン酸、シトラコン酸等の脂肪族ジカルボン
酸類、安息香酸やフタル酸、ピロメリト酸、トルイル酸
等の芳香族カルボン酸類等を用いる。そして有機酸塩
は、これ等の有機酸の塩を用いる。Further, as the organic acid which is dissolved in each of these polyhydric alcohol substances or a combination of two or more kinds thereof, propionic acid, enanthic acid, caprylic acid,
aliphatic monocarboxylic acids such as n-nonanoic acid, adipic acid, suberic acid, sebacic acid, 1,10-decanedicarboxylic acid, 1,6-decanedicarboxylic acid (butyloctanedioic acid), maleic acid, citraconic acid, etc. Aliphatic dicarboxylic acids, aromatic carboxylic acids such as benzoic acid, phthalic acid, pyromellitic acid and toluic acid are used. As the organic acid salt, salts of these organic acids are used.
【００１１】さらに、ポリメチレンビスホスホン酸、ア
ミノトリメチレンホスホン酸、またはアミルサルコシン
は、個々に添加するかあるいは二種類以上を組合わせて
添加する。組合わせとしては、ポリメチレンビスホスホ
ン酸とアミノトリメチレンホスホン酸、ポリメチレンビ
スホスホン酸とアミルサルコシン、アミノトリメチレン
ホスホン酸とアミルサルコシン、ポリメチレンビスホス
ホン酸とアミノトリメチレンホスホン酸とアミルサルコ
シンがある。なお、ポリメチレンビスホスホン酸等の添
加量は０．０１〜４．０wt％の範囲が好ましく、０．０
１wt％より少ないかまたは４．０wt％より多いと、十分
な腐食抑制効果を示さなくなる。Further, polymethylene bisphosphonic acid, aminotrimethylene phosphonic acid, or amyl sarcosine is added individually or in combination of two or more kinds. The combinations include polymethylenebisphosphonic acid and aminotrimethylenephosphonic acid, polymethylenebisphosphonic acid and amylsarcosine, aminotrimethylenephosphonic acid and amylsarcosine, and polymethylenebisphosphonic acid and aminotrimethylenephosphonic acid and amylsarcosine. The amount of polymethylene bisphosphonic acid added is preferably in the range of 0.01 to 4.0 wt%,
If it is less than 1 wt% or more than 4.0 wt%, a sufficient corrosion inhibiting effect cannot be obtained.
【００１２】[0012]
【作用】ポリメチレンビスホスホン酸やアミノトリメチ
レンホスホン酸等の化合物はＬＣが著しく増大するのを
抑制できる作用がある。そしてこれ等の化合物を含有す
る電解液は、電極箔やリード部分の表面に保護膜を形成
する。この保護膜は、容易に剥がれにくく、持続性があ
り、塩化物イオンをはじめ低級有機酸等による作用を防
止し、電極箔等が腐食するのを防止できる。[Function] A compound such as polymethylene bisphosphonic acid or aminotrimethylene phosphonic acid has an effect of suppressing a significant increase in LC. Then, the electrolytic solution containing these compounds forms a protective film on the surface of the electrode foil or the lead portion. This protective film is not easily peeled off and is durable, and can prevent the action of chloride ions, lower organic acids and the like, and prevent the corrosion of electrode foils and the like.
【００１３】[0013]
【実施例】以下、本発明を実施例に基づいて説明する。
先ず、溶媒はエチレングリコールを用いる。次に、主た
る溶質には、カプリル酸とセバシン酸の有機酸、１，６
−デカンジカルボン酸アンモニウムの有機酸塩及びホウ
酸アンモニウムを用いる。そしてポリメチレンビスホス
ホン酸、アミノトリメチレンホスホン酸及びアシルサル
コシンとともにリン酸を添加する。EXAMPLES The present invention will be described below based on examples.
First, ethylene glycol is used as the solvent. Next, the main solutes were organic acids of caprylic acid and sebacic acid, 1,6
Using an organic acid salt of ammonium decanedicarboxylate and ammonium borate. Then, phosphoric acid is added together with polymethylene bisphosphonic acid, aminotrimethylene phosphonic acid and acyl sarcosine.
【００１４】次に、表１及び表２に示した組成からなる
実施例及び従来例の電解液がアルミ電解コンデンサのＬ
Ｃ特性と断線不良に与える影響について測定した。Next, the electrolytic solutions of Examples and Conventional Examples having the compositions shown in Tables 1 and 2 are L of aluminum electrolytic capacitors.
The effect on C characteristics and disconnection failure was measured.
【００１５】[0015]
【表１】 [Table 1]
【００１６】[0016]
【表２】 [Table 2]
【００１７】この試験のために、上記の電解液に濃厚な
塩化ナトリウム水溶液を加え、塩化物イオン濃度を５ｐ
ｐｍになるように調整した溶液をコンデンサ素子の含浸
剤に用いた。そしてこの含浸剤を用いた、定格４００
Ｖ、３３０μＦのアルミ電解コンデンサを直流電圧４０
０Ｖを印加して温度９０℃の雰囲気中に放置し、断線不
良とＬＣとを測定した。この測定結果は表３に示した。
試料数は各々１０個である。For this test, a concentrated aqueous solution of sodium chloride was added to the above electrolyte solution to adjust the chloride ion concentration to 5 p.
The solution adjusted to pm was used as the impregnating agent for the capacitor element. And using this impregnating agent, rated 400
V, 330μF aluminum electrolytic capacitor, DC voltage 40
0 V was applied and the sample was left in an atmosphere at a temperature of 90 ° C., and disconnection failure and LC were measured. The measurement results are shown in Table 3.
The number of samples is 10 each.
【００１８】[0018]
【表３】 [Table 3]
【００１９】表３から明らかな通り、２４ｈ（時間）の
後のＬＣは、実施例１〜実施例１５の電解液を含浸した
Ｎｏ１〜Ｎｏ１５の電解コンデンサと、従来例１〜従来
例７の電解液を含浸したＮｏ１６〜Ｎｏ２２の電解コン
デンサともほぼ同一の値を示した。しかし、１０００ｈ
〜２０００ｈ後に、Ｎｏ１〜Ｎｏ１５の電解コンデンサ
は全部ＬＣが減少しているのに対して、Ｎｏ１６〜Ｎｏ
２２の電解コンデンサはＬＣが増大している。すなわ
ち、実施例１〜実施例１５の電解液を用いることにより
電解コンデンサのＬＣ特性が改善されている。As is clear from Table 3, the LC after 24 hours (hours) was the electrolytic capacitors No. 1 to No. 15 impregnated with the electrolytic solutions of Examples 1 to 15 and the electrolysis of Conventional Examples 1 to 7. The electrolytic capacitors No. 16 to No. 22 impregnated with the liquid also showed almost the same value. But 1000h
~ 2000h, LC of all No1 ~ No15 electrolytic capacitors has decreased, while No16 ~ No15
LC of 22 electrolytic capacitors is increasing. That is, the LC characteristics of the electrolytic capacitors are improved by using the electrolytic solutions of Examples 1 to 15.
【００２０】また、Ｎｏ１〜Ｎｏ１５の電解コンデンサ
は、２０００ｈ放置後においても断線不良を発生してい
ない。これに対して、Ｎｏ１６〜Ｎｏ１９の電解コンデ
ンサは、２０００ｈ後に全数が断線不良となった。そし
てＮｏ２０〜Ｎｏ２２の電解コンデンサは、２０００ｈ
後に１〜２個の断線不良を生じた。Further, the electrolytic capacitors No. 1 to No. 15 do not cause disconnection defects even after being left for 2000 hours. On the other hand, all of the electrolytic capacitors No. 16 to No. 19 were defective in disconnection after 2000 hours. And No20 to No22 electrolytic capacitors are 2000h
After that, 1 to 2 disconnection defects occurred.
【００２１】[0021]
【発明の効果】以上の通り、本発明によれば、ポリメチ
レンビスホスホン酸等を含有しているため、電解コンデ
ンサのＬＣ特性を改善でき、断線不良を防止でき、寿命
を長くできる電解コンデンサ用電解液が得られる。As described above, according to the present invention, since it contains polymethylenebisphosphonic acid and the like, it is possible to improve the LC characteristics of the electrolytic capacitor, prevent disconnection defects, and prolong the life of the electrolytic capacitor. A liquid is obtained.
Claims (1)
有機酸、有機酸塩、ホウ酸またはホウ酸塩のうちの一種
類以上を溶解した電解コンデンサ用電解液において、ポ
リメチレンビスホスホン酸、アミノトリメチレンホスホ
ン酸またはアシルサルコシンの一種類以上を含有するこ
とを特徴とする電解コンデンサ用電解液。1. A solvent containing a polyhydric alcohol as a main component,
An electrolytic solution for an electrolytic capacitor in which one or more of an organic acid, an organic acid salt, boric acid or a borate is dissolved, and contains one or more of polymethylenebisphosphonic acid, aminotrimethylenephosphonic acid or acylsarcosine. An electrolytic solution for electrolytic capacitors.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1493694A JPH07211589A (en) | 1994-01-14 | 1994-01-14 | Electrolytic solution for electrolytic capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1493694A JPH07211589A (en) | 1994-01-14 | 1994-01-14 | Electrolytic solution for electrolytic capacitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH07211589A true JPH07211589A (en) | 1995-08-11 |
Family
ID=11874860
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1493694A Pending JPH07211589A (en) | 1994-01-14 | 1994-01-14 | Electrolytic solution for electrolytic capacitor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07211589A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001084573A1 (en) * | 2000-04-28 | 2001-11-08 | Epcos Ag | Operating electrolyte containing a corrosion inhibitor for aluminum electrolyte capacitors |
-
1994
- 1994-01-14 JP JP1493694A patent/JPH07211589A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001084573A1 (en) * | 2000-04-28 | 2001-11-08 | Epcos Ag | Operating electrolyte containing a corrosion inhibitor for aluminum electrolyte capacitors |
| US6942819B2 (en) | 2000-04-28 | 2005-09-13 | Epcos Ag | Capacitor having corrosion inhibitor |
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