Electric discharge machine process and fluid
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United States of America Patent
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Jul 26, 1994
Grant Date -
N/A
app pub date -
Mar 5, 1992
filing date -
Mar 5, 1992
priority date (Note) -
Expired
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Abstract
An electric discharge machine fluid has been discovered. The fluid comprises a naphthene oil and 0.15 to 0.50 wt % 1,6-hexamethylene bis(3,5-ditertiarybutyl-4-hydroxycinnamate). The fluid was found to increase the breakdown voltage of the fluid and to stabilize oxidative deterioration.
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