Sprague Electric Company

Franz S Dunkl

Sidney D Ross

Manuel Finkelstein

Mark Markarian

Francis J Gamari

An aluminum or tantalum electrolytic capacitor contains an electrolyte system utilizing 3-methoxypropionitrile as solvent. This system includes a stable solute chosen from amine-glycol-borates, condensed phosphates, and complex boro-phenolates to provide a system having a room-temperature resistivity of up to 1000 ohm-cm.

Electrolytic capacitor

An electrolyte for an AC motor-start electrolytic capacitor consists essentially of 10 to 40 wt % mono(diethylammonium) or mono(triethylammonium) adipate as solute in ethylene glycol as solvent.

AC Electrolytic capacitor electrolyte

An aluminum electrolytic capacitor capable of operation at 200 VDC or higher and 130.degree. C. contains as its electrolyte a tertiary amine or a dipropylamine mono salt of dodecanedioic acid dissolved in a solvent mixture of ethylene glycol and N-methyl-2-pyrrolidinone and water.

Electrolytic capacitor for at least 200 V service

A high-temperature aluminum electrolytic capacitor contains an electrolyte of mono(di-n-propylammonium) adipate or mono(diisopropylammonium) adipate, a phosphate salt, and water dissolved in ethylene glycol to provide a capacitor capable of operating at least at 200 VDC and 130.degree. C.

High temperature electrolytic capacitor

An electrolytic capacitor contains as electrolyte a metatungstate salt dissolved in a polar solvent. The salt is preferably an ammonium or amine salt, and the solvent consists essentially of at least one polar organic solvent and water.

Electrolytic capacitor containing a metatungstate electrolyte

An electrolytic capacitor contains an electrolyte of ammonium anthranilate dissolved in a polar organic solvent.

Capacitor containing anthranilate electrolyte

A non-aqueous electrolyte for an electrolytic capacitor contains as solute a salt obtained from an amine and a trialkyl phosphate.

Non-aqueous electrolytic capacitor electrolyte

Wound foil electrolytic capacitor sections are anodized after winding. After removal of the formation electrolyte, the sections are rinsed, dried, and impregnated with working electrolyte. The sections are assembled by usual means into capacitors.

Anodization of electrolytic capacitor sections

An electrolyte system for electrolytic capacitors contains as solute an ammonium or amine salt of an amic acid or an amate. These salts may be obtained by the reaction of maleic, succinic, phthalic, or hexahydrophthalic anhydride with ammonia or an amine.

An aluminum electrolytic capacitor includes an electrolyte solute of ammonium succinate or ammonium adipate in combination with ammonium succinamate, succinamic acid, succinamide, or succinimide.

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Williamstown, MA, United States of America

Franz S Dunkl