Method to improve flowability of resin coated sand
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United States of America Patent
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Feb 26, 1991
Grant Date -
N/A
app pub date -
Apr 27, 1989
filing date -
Apr 27, 1989
priority date (Note) -
Expired
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Abstract
A process for improving the flowability of resin coated sand which comprises the use of a fluorosurfactant with the mixture of sand and resin. Also provided is a resin binder containing a fluorosurfactant and a foundry mix comprising foundry sand, a resin binder and a fluorosurfactant. The resins used are alkaline phenolic resole resins and acid-curable resins.
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