High surface area magnesia curing agent
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United States of America Patent
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Mar 23, 2004
Grant Date -
Aug 14, 2003
app pub date -
Jan 15, 2003
filing date -
Jan 17, 2002
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Binder compositions of the present invention are useful in refractory and foundry applications. The compositions include an aggregate, a liquid resole resin, and a magnesium hardening agent. The compositions are workable and exhibit high compressive strengths in a short period of time. Additionally, the compositions have a low free phenol content and require a reduced resin content as compared to currently known compositions. The compositions reduce the cost to produce useful binders by eliminating the requirement for ester curing in addition to requiring reduced amounts of resin to obtain adequate compressive strength.
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