Mold release material for die castings
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United States of America Patent
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Jan 3, 1995
Grant Date -
N/A
app pub date -
Sep 16, 1993
filing date -
Oct 26, 1990
priority date (Note) -
Expired
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Abstract
The mold release material for die castings is such one that an emulsion based on animal or vegetable oils, mineral oil, fatty acid and esters thereof is added an alkali metal or alkali earth metal salt of EDTA in the range 10-10,000 ppm. The alkali metal or alkali earth metal salt of EDTA prevents the aqueous solution of emulsion of the mold release material of the invention from micell formation, forms a stable emulsion, is scarcely affected by temperature, and forms bivalent metal ion and water soluble complex whereby it does not form deposits even if hard water is used as diluted water of the mold release material.
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