Patent · US Expired

Ethylene glycol mixture and an aluminum electrolytic capacitor using the mixture

US6707661B2 · kind B2 · utility

1Cited by

1References

8Claims

0Family size

Assignee

EPCOS AG · DE

Inventors

Thomas Ebel · Stralsund, DE
Wilhelm Lauer · Giengen an der Brenz, DE

Key dates

Filing date	Oct 3, 2002
Grant date	Mar 16, 2004
Priority date	—
Expiry date	Oct 3, 2022

Classification

Technology area (CPC H)Electricity
CPC primaryH01G9/022
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

The invention is directed to an ethylene glycol mixture that also includes diethylene glycol monobutylether in addition to ethylene glycol and sorbitol. As a result thereof the ethylene glycol mixture exhibits a high dielectric strength (up to 66 V), a low water content and self-extinguishing properties for employment as electrolyte in an aluminum electrolytic capacitor. The invention is also directed to an aluminum electrolytic capacitor with the ethylene glycol mixture and to the employment of the ethylene glycol mixture in aluminum electrolytic capacitors for voltages up to 600 V.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.