BINDER SYSTEM OF MOLDING MIXTURE FOR PRODUCTION OF MOLD AND CORE

PROBLEM TO BE SOLVED: To obtain a polyurethane-based binder system for a cold box and for a non-baking process of a polyurethane. SOLUTION: This binder system consists of a phenolic resin component which contains the phenolic resin having at least 2 OH groups per one molecule, and a polyisocyanate c...

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Bibliographische Detailangaben
Hauptverfasser:	BARTSCH DIETER, SEEGER KLAUS, LADEGOURDIE GERARD, TORBUS MAREK
Format:	Patent
Sprache:	eng
Schlagworte:	CASTING CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS FOUNDRY MOULDING MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS POWDER METALLURGY THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To obtain a polyurethane-based binder system for a cold box and for a non-baking process of a polyurethane. SOLUTION: This binder system consists of a phenolic resin component which contains the phenolic resin having at least 2 OH groups per one molecule, and a polyisocyanate component which contains at least 2 isocyanate groups per one molecule, and at least the phenolic resin component contains a solvent. In the new binder system, the solvent of the phenolic resin component contains a substance selected from the group consisting of an alkylsilisic acid ester, an alkylsilisic acid ester oligomer and their mixtures, and/or the polyisocyanate component also contains a solvent consisting of such substance. The suitable alkylsilisic acid ester is tetraethyl silisic acid ester.