BIO-BASED BINDER SYSTEM

A bio-based binder system for use in preparing foundry molds. In a preferred embodiment, the system includes the use of a) a polyermizable hydroxyl -containing component comprising a saccharide, b) an isocyanate component, and c) a catalyst, and preferably amine catalyst, component adapted to cataly...

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Bibliographische Detailangaben
Hauptverfasser:	WILLIAMS, IAN, THIEL, GERARD, R, SIMONSON, ANDREW, JONES, RYAN, COON, SHOSHANNA, R, PATTERSON, MITCHELL
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE ADHESIVES CASTING CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS DYES FOUNDRY MOULDING MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL ORGANIC MACROMOLECULAR COMPOUNDS PAINTS PERFORMING OPERATIONS POLISHES POWDER METALLURGY THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING USE OF MATERIALS AS ADHESIVES
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Beschreibung
Zusammenfassung:	A bio-based binder system for use in preparing foundry molds. In a preferred embodiment, the system includes the use of a) a polyermizable hydroxyl -containing component comprising a saccharide, b) an isocyanate component, and c) a catalyst, and preferably amine catalyst, component adapted to catalyze the polymerization of a) and b), in the presence of a foundry aggregate such as sand. The system can be used in any suitable manner, including in either a cold box process or no bake process as described herein. L'invention concerne un système de liant à base biologique destiné à être utilisé dans la préparation de moules de fonderie. Dans un mode préféré de réalisation, le système comprend l'utilisation a) d'un composant contenant un hydroxyle polymérisable comprenant un saccharide, b) d'un composant isocyanate, et c) d'un composant catalyseur, de préférence un catalyseur d'amine, adapté pour catalyser la polymérisation de a) et b), en présence d'un agrégat de fonderie tel que du sable. Le système peut être utilisé selon toute manière appropriée, y compris un procédé à boîte froide ou un procédé sans cuisson tel que décrit ici.