PHENOLIC RESIN COMPOSITION FOR SHELL MOLDING, RESIN COATED SAND FOR SHELL MOLDING, AND SHELL MOLD FORMED OF THE SAME
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United States of America Patent
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app pub date -
Mar 5, 2014
filing date -
Jul 23, 2009
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Abandoned
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Abstract
Provided are a phenolic resin composition for shell molding that has low thermal expansion properties and high flexibility, a resin coated sand for shell molding obtained by using the same, and a shell mold formed of the same. The phenolic resin composition for shell molding that is capable of exhibiting advantageous mold characteristic is obtained by a combination of a phenolic resin that is obtained by a reaction of a phenol, a naphthol, and an aldehyde, and a fatty acid amide.
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