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    • 12. 发明授权
    • Electrolytic solution for aluminum electrolytic capacitor, and aluminum electrolytic capacitor
    • 铝电解电容器电解液,铝电解电容器
    • US08675347B2
    • 2014-03-18
    • US13258507
    • 2009-07-11
    • Masao SakakuraJunichi KawakamiKazuma OkuraShingo TakeuchiMasashi OzawaKenji Tamamitsu
    • Masao SakakuraJunichi KawakamiKazuma OkuraShingo TakeuchiMasashi OzawaKenji Tamamitsu
    • H01G9/02
    • H01G9/035H01G9/045H01G9/145
    • Disclosed are an aluminum electrolytic capacitor having low impedance properties and a long service life, and an electrolytic solution which enables to give such capacitor. The electrolytic solution contains a solvent containing water, a phosphorus oxoacid ion-generating compound which can generate a phosphorus oxoacid ion in an aqueous solution, and a chelating agent which can coordinate with aluminum to form an aqueous aluminum chelate complex. The electrolytic solution further contains a compound selected from the group consisting of azelaic acid and an azelaic acid salt, and a compound selected from the group consisting of formic acid, a formic acid salt, adipic acid, an adipic acid salt, glutaric acid and a glutaric acid salt. The content of azelaic acid and/or the azelaic acid salt is at least 0.03 moles per kg of the solvent. When the electrolytic solution is used in an electrolytic capacitor which utilizes an anode having an aluminum oxide film containing phosphorus in an amount of 30 to 150 mg per unit CV product in terms of phosphoric acid, the service life of the capacitor is remarkably prolonged.
    • 公开了一种具有低阻抗性和长使用寿命的铝电解电容器,以及能够提供这种电容器的电解液。 电解液含有含水的溶剂,能够在水溶液中产生含磷酸的离子的含磷酸氧离子的化合物,以及可与铝配位以形成铝酸水溶液络合物的螯合剂。 电解液还含有选自壬二酸和壬二酸盐的化合物和选自甲酸,甲酸盐,己二酸,己二酸盐,戊二酸和 戊二酸盐。 壬二酸和/或壬二酸盐的含量为每千克溶剂至少0.03摩尔。 当电解液用于利用具有氧化铝膜的阳极的电解电容器时,磷酸的含量为每单位CV产品30〜150mg,磷的使用寿命显着延长。
    • 18. 发明申请
    • ELECTROLYTIC CAPACITOR
    • 电解电容器
    • US20080030926A1
    • 2008-02-07
    • US11775364
    • 2007-07-10
    • Masashi OZAWAMasayuki TAKEDAMakoto Ue
    • Masashi OZAWAMasayuki TAKEDAMakoto Ue
    • H01G9/10H05K5/06
    • H01G9/008H01G9/028H01G9/10
    • An electrolytic capacitor having a low impedance characteristic, having a high withstand voltage characteristic of 100V class, wherein the electrolytic capacitor provides an excellent high temperature life characteristic and an excellent leakage characteristic. The electrolyte solution containing the aluminum tetrafluoride salt is used. Moreover, the ceramics coating layer or the insulating synthetic resin layer is formed at a contact portion with the sealing component of the rivet or the cathode leading means. Alternatively, a partial cross-linking peroxide butyl rubber that added peroxide as cross-linking agent to a butyl rubber polymer comprised of isobutylene, isoprene, and divinylbenzene copolymer is used as the sealing member. The electrolytic capacitor of the present invention has a low impedance characteristic, a high withstand voltage characteristic, and an excellent high temperature life characteristic.
    • 具有低阻抗特性的电解电容器具有100V等级的高耐压特性,其中电解电容器提供优异的高温寿命特性和优异的泄漏特性。 使用含有四氟化铝盐的电解液。 此外,陶瓷涂层或绝缘合成树脂层形成在与铆钉或阴极引导装置的密封部件的接触部分处。 或者,使用将过氧化物作为交联剂添加到由异丁烯,异戊二烯和二乙烯基苯共聚物构成的丁基橡胶聚合物的部分交联过氧化丁基橡胶作为密封构件。 本发明的电解电容器具有低阻抗特性,高耐压特性和优异的高温寿命特性。
    • 20. 发明申请
    • Electrolytic capacitor
    • 电解电容器
    • US20060164791A1
    • 2006-07-27
    • US10534235
    • 2003-11-07
    • Masashi OzawaMasayuki TakedaMakoto Ue
    • Masashi OzawaMasayuki TakedaMakoto Ue
    • H01G9/00
    • H01G9/008H01G9/028H01G9/10
    • An electrolytic capacitor having a low impedance characteristic, having a high withstand voltage characteristic of 100V class, wherein the electrolytic capacitor provides an excellent high temperature life characteristic and an excellent leakage characteristic. The electrolyte solution containing the aluminum tetrafluoride salt is used. Moreover, the ceramics coating layer or the insulating synthetic resin layer is formed at a contact portion with the sealing component of the rivet or the cathode leading means. Alternatively, a partial cross-linking peroxide butyl rubber that added peroxide as cross-linking agent to a butyl rubber polymer comprised of isobutylene, isoprene, and divinylbenzene copolymer is used as the sealing member. The electrolytic capacitor of the present invention has a low impedance characteristic, a high withstand voltage characteristic, and an excellent high temperature life characteristic.
    • 具有低阻抗特性的电解电容器具有100V等级的高耐压特性,其中电解电容器提供优异的高温寿命特性和优异的泄漏特性。 使用含有四氟化铝盐的电解液。 此外,陶瓷涂层或绝缘合成树脂层形成在与铆钉或阴极引导装置的密封部件的接触部分处。 或者,使用将过氧化物作为交联剂添加到由异丁烯,异戊二烯和二乙烯基苯共聚物构成的丁基橡胶聚合物的部分交联过氧化丁基橡胶作为密封构件。 本发明的电解电容器具有低阻抗特性,高耐压特性和优异的高温寿命特性。