Inorganic foundry binder systems and their uses
September 17, 2013. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3923525 Method of casting non-ferrous alloys Settable composition containing aluminum phosphate and method for preparing same Composition and process for forming inorganic resins and resulting product Composition and process for forming inorganic resins and resulting product Phosphate ceramic backing blocks and their preparation Inorganic foundry binder systems and their uses Patent #: 5279665 InventorsAssigneeApplicationNo. 123507 filed on 09/17/1993US Classes:106/690, Phosphate based cement106/38.3, Alkali metal silicate or inorganic settable ingredient containing106/38.35, With organic material106/691, Specified filler or organic material containing106/801, Magnesium compound (e.g., vermiculite, talc, soapstone, dolomite, etc.)501/111And phosphorus compoundExaminersPrimary: Bell, Mark L.Assistant: Marcantoni, Paul Attorney, Agent or FirmForeign Patent References
International ClassesC04B 009/04C04B 035/04 AbstractThis invention relates to inorganic no-bake foundry binder systems and their uses. The binder systems comprise as separate components: (A) mono-aluminum phosphate in an aqueous solution containing specified phosphoric acids, and (B) magnesium oxide; and certain specified zinc compounds in either the Component A, Component B or both. The components of the binder system react when they are mixed with a foundry aggregate to prepare foundry mixes which are used to prepare foundry molds and cores. The foundry molds and cores are used to cast metals.Other References
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