Patent · US Expired

Method for purifying silicone oil

US4661612A · kind A · utility

23Cited by

2References

9Claims

0Family size

Assignee

Licentia Patent-Verwaltungs-GmbH · DE

Inventors

Ulf George · Ulm, DE
Erwin Rochau · Langenau, DE
Hans Merk · Radolfzell, DE
Joachim Behnke · Miltenberg, DE

Key dates

Filing date	Nov 13, 1985
Grant date	Apr 28, 1987
Priority date	—
Expiry date	Nov 13, 2005

Classification

Technology area (CPC H)Electricity
CPC primaryH01B3/465
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A method for purifying silicone oil used particularly as a cooling and/or insulation agent in electrical high voltage devices. The silicone oil is purified by the addition of drying agents, e.g. molecular sieves, and adsorption agents, e.g. activated carbon, and by mechanically moving the mixture. After subsequent sedimentation, filtration and degasification, purified silicone oil is obtained which can again be used as a coolant and/or insulating agent.

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