Foundry binder of polyurethane, phenolic resin, polyisocyanate and epoxy resin
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United States of America Patent
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Nov 9, 1999
Issued Date -
N/A
app pub date -
Nov 28, 1997
filing date -
Oct 18, 1995
priority date (Note) -
Expired
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Abstract
Compositions and methods for improving the characteristics of foundry cores which includes adding to a foundry aggregate mixture polyurethane resin binder comprising epoxy resin and, preferably, paraffinic oil.
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