JPH0286113A - Electrolyte for electrolytic capacitor - Google Patents
Electrolyte for electrolytic capacitorInfo
- Publication number
- JPH0286113A JPH0286113A JP23630088A JP23630088A JPH0286113A JP H0286113 A JPH0286113 A JP H0286113A JP 23630088 A JP23630088 A JP 23630088A JP 23630088 A JP23630088 A JP 23630088A JP H0286113 A JPH0286113 A JP H0286113A
- Authority
- JP
- Japan
- Prior art keywords
- electrolyte
- polyvinyl alcohol
- ammonium borate
- partially saponified
- saponified polyvinyl
- 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
- 239000003990 capacitor Substances 0.000 title claims description 7
- 239000003792 electrolyte Substances 0.000 title abstract description 11
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000004372 Polyvinyl alcohol Substances 0.000 claims abstract description 9
- 229920002451 polyvinyl alcohol Polymers 0.000 claims abstract description 9
- 229920005862 polyol Polymers 0.000 claims abstract description 8
- WYXIGTJNYDDFFH-UHFFFAOYSA-Q triazanium;borate Chemical compound [NH4+].[NH4+].[NH4+].[O-]B([O-])[O-] WYXIGTJNYDDFFH-UHFFFAOYSA-Q 0.000 claims abstract description 7
- 150000005846 sugar alcohols Polymers 0.000 claims abstract description 6
- 239000008151 electrolyte solution Substances 0.000 claims description 11
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 claims description 6
- 150000003077 polyols Chemical class 0.000 claims description 6
- GOOHAUXETOMSMM-UHFFFAOYSA-N Propylene oxide Chemical compound CC1CO1 GOOHAUXETOMSMM-UHFFFAOYSA-N 0.000 claims description 3
- 239000012046 mixed solvent Substances 0.000 claims description 3
- 229920000642 polymer Polymers 0.000 claims description 3
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 abstract description 6
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 abstract description 6
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 abstract description 6
- 230000015556 catabolic process Effects 0.000 abstract description 4
- 235000011187 glycerol Nutrition 0.000 abstract description 3
- -1 ether polyol Chemical class 0.000 abstract 2
- 239000011259 mixed solution Substances 0.000 abstract 2
- 238000004090 dissolution Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- OMOVVBIIQSXZSZ-UHFFFAOYSA-N [6-(4-acetyloxy-5,9a-dimethyl-2,7-dioxo-4,5a,6,9-tetrahydro-3h-pyrano[3,4-b]oxepin-5-yl)-5-formyloxy-3-(furan-3-yl)-3a-methyl-7-methylidene-1a,2,3,4,5,6-hexahydroindeno[1,7a-b]oxiren-4-yl] 2-hydroxy-3-methylpentanoate Chemical compound CC12C(OC(=O)C(O)C(C)CC)C(OC=O)C(C3(C)C(CC(=O)OC4(C)COC(=O)CC43)OC(C)=O)C(=C)C32OC3CC1C=1C=COC=1 OMOVVBIIQSXZSZ-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
- 230000000694 effects Effects 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
- 239000010407 anodic oxide Substances 0.000 description 1
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 1
- 239000004327 boric acid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
この発明は耐電圧特性に優れた電解コンデンサ用電解液
に関する。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to an electrolytic solution for electrolytic capacitors having excellent withstand voltage characteristics.
従来の技術
アルミ電解コンデンサは、陽極酸化皮膜の厚さと電解液
の耐圧とが使用電圧に耐えられるよう決めている。その
ため、高圧用のアルミ電解コンデンサを製作する上で電
解液の耐圧を向上させることは重要なテーマである。従
って高耐圧の電解液を得るための溶媒や添加物の検討が
行われている。In conventional aluminum electrolytic capacitors, the thickness of the anodic oxide film and the withstand voltage of the electrolyte are determined to withstand the operating voltage. Therefore, improving the withstand voltage of the electrolyte is an important theme when manufacturing high-voltage aluminum electrolytic capacitors. Therefore, studies are being conducted on solvents and additives to obtain electrolytes with high voltage resistance.
この中で電解液の耐圧を高める手段としてポリビニルア
ルコールとホウ酸を添加した電解液が特開昭６０−９１
６１８号として公知である。Among these, an electrolyte solution containing polyvinyl alcohol and boric acid was developed in JP-A-60-91 as a means of increasing the withstand voltage of the electrolyte solution.
It is known as No. 618.
発明が解決しようとする課題
電解液として用いられるポリビニルアルコールは、水に
対しては優れた溶解性を示すが、多価アルコール等の有
機溶媒には溶解能が低い欠点を有している。ポリビニル
アルコールを溶解させる手段として溶媒の温度を極度に
高め、激しい攪拌を行わねばならず作業性が悪かった。Problems to be Solved by the Invention Polyvinyl alcohol used as an electrolyte exhibits excellent solubility in water, but has a drawback of low solubility in organic solvents such as polyhydric alcohols. As a means of dissolving polyvinyl alcohol, the temperature of the solvent must be extremely raised and vigorous stirring must be performed, resulting in poor workability.
課題を解決するための手段
この発明の電解コンデンサの電解液は、エチレングリコ
ール、ジエチレングリコール、グリセリン等の多価アル
コールとエーテル型のポリオールとの混合溶媒からなる
電解液に対し、部分ケン化ポリビニルアルコールとホウ
酸アンモニウムとを添加したものを提供する。Means for Solving the Problems The electrolytic solution of the electrolytic capacitor of the present invention is composed of partially saponified polyvinyl alcohol and a mixed solvent of polyhydric alcohol such as ethylene glycol, diethylene glycol, glycerin, and ether type polyol. ammonium borate.
エーテル型のポリオールはプロピレングリコールとプロ
ピレンオキシドの付加重合体（以下物質Ａという）やグ
リセリンとプロピレンオキシドの付加重合体く以下物質
Ｂという）を含む。Ether type polyols include addition polymers of propylene glycol and propylene oxide (hereinafter referred to as substance A) and addition polymers of glycerin and propylene oxide (hereinafter referred to as substance B).
物質Ａの構造式は
可能になり、さらに溶解性が良好な部分ケン化ポリビニ
ルアルコールとホウ酸アンモニウムを添加することによ
り耐圧特性に優れた電解液を得ることができる。The structural formula of substance A can be obtained, and by adding partially saponified polyvinyl alcohol and ammonium borate, which have good solubility, it is possible to obtain an electrolytic solution with excellent pressure resistance characteristics.
実施例
表１に従来例１，２と本発明の実施例１〜４の組成、濃
度（重量％）及び火花電圧を記載する。Examples Table 1 lists the compositions, concentrations (% by weight), and spark voltages of Conventional Examples 1 and 2 and Examples 1 to 4 of the present invention.
以下余白。Margin below.
物質Ｂの構造式は Ｈ３ である。The structural formula of substance B is H3 It is.
作用
本発明は、多価アルコールとエーテル型ポリオールとの
混合溶媒を用いることにより耐圧向上が表−１
表１によると、多価アルコールとエーテル型のポリオー
ルとの混合溶媒に部分ケン化ポリビニルアルコールとホ
ウ酸アンモニウムを添加した本発明の実施例は従来例と
対比して、耐圧特性が大きく改善され参考例との比較に
おいても耐圧向上が認められる。このことからエーテル
型のポリオールのみによっても耐圧特性が向上すること
がわかる。Effect The present invention improves pressure resistance by using a mixed solvent of a polyhydric alcohol and an ether type polyol. In the examples of the present invention in which ammonium borate was added, the breakdown voltage characteristics were greatly improved compared to the conventional examples, and the improvement in breakdown voltage was also observed in comparison with the reference examples. From this, it can be seen that the pressure resistance characteristics are improved even by using only the ether type polyol.
発明の効果
本発明は以上に説明した如き構成の電解液であって、従
来の電解液に対し、本発明は耐圧特性が向上する電解液
が提供できた。Effects of the Invention The present invention provides an electrolytic solution having the structure as described above, and the present invention has been able to provide an electrolytic solution with improved voltage resistance characteristics compared to conventional electrolytic solutions.
特許出願人 日立コンデンサ株式会社Patent applicant: Hitachi Capacitor Co., Ltd.
Claims (2)
合溶媒からなる電解液に対して、部分ケン化ポリビニル
アルコールとホウ酸アンモニウムとを添加することを特
徴とする電解コンデンサ用電解液。(1) An electrolytic solution for an electrolytic capacitor, characterized in that partially saponified polyvinyl alcohol and ammonium borate are added to an electrolytic solution consisting of a mixed solvent of a polyhydric alcohol and an ether type polyol.
がプロピレングリコールとプロピレンオキシドの付加重
合体である電解コンデンサ用電解液。(2) The electrolytic solution for an electrolytic capacitor according to claim 1, wherein the ether type polyol is an addition polymer of propylene glycol and propylene oxide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23630088A JPH0722088B2 (en) | 1988-09-22 | 1988-09-22 | Electrolytic solution for electrolytic capacitors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23630088A JPH0722088B2 (en) | 1988-09-22 | 1988-09-22 | Electrolytic solution for electrolytic capacitors |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0286113A true JPH0286113A (en) | 1990-03-27 |
| JPH0722088B2 JPH0722088B2 (en) | 1995-03-08 |
Family
ID=16998752
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23630088A Expired - Lifetime JPH0722088B2 (en) | 1988-09-22 | 1988-09-22 | Electrolytic solution for electrolytic capacitors |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0722088B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09298132A (en) * | 1996-05-09 | 1997-11-18 | Nichicon Corp | Electrolytic solution for electrolytic capacitor drive |
-
1988
- 1988-09-22 JP JP23630088A patent/JPH0722088B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09298132A (en) * | 1996-05-09 | 1997-11-18 | Nichicon Corp | Electrolytic solution for electrolytic capacitor drive |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0722088B2 (en) | 1995-03-08 |
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