Cold-box binders containing an epoxy resin and ester of a fatty acid
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United States of America Patent
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Jul 25, 2006
Grant Date -
Jan 27, 2005
app pub date -
Jul 25, 2003
filing date -
Jul 25, 2003
priority date (Note) -
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Abstract
This invention relates to foundry binder systems, which cure in the presence of sulfur dioxide and an oxidizing agent, comprising (a) an epoxy resin; (b) an ester of a fatty acid; (c) an effective amount of a oxidizing agent, and (d) no ethylenically unsaturated monomer or polymer. The foundry binder systems are used for making foundry mixes. The foundry mixes are used to make foundry shapes (such as cores and molds) which are used to make metal castings, particularly ferrous castings.
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