Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
George David Green0
Raymond J. Swedo0
Charles F. Marth0
Date of Patent
October 10, 2006
Patent Application Number
10423612
Date Filed
April 25, 2003
Patent Primary Examiner
Patent abstract
Foundry cores and molds for casting metals are prepared by forming a binder comprising a polyol, an isocyanato urethane polymer and a urethane catalyst. The binder additives and resin formulations of the invention are especially useful for casting non-ferrous metals, for example, the casting of aluminum, magnesium and other lightweight metals. The cores and molds produced for casting aluminum and other lightweight metals exhibit excellent shakeout while retaining other desirable core and mold properties.
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