Two part binding agent system, useful for the production of casting molds and cores, containing a solvent consisting of an alkylsilicate and/or an alkylsilicate oligomer

摘要

A two component binding agent system (I) comprises: (A) a phenolic resin having at least 2 OH groups per molecule; and (B) a polyisocyanate component having at least 2 isocyanate groups per molecule. (A) and (B) contain a solvent consisting of an alkylsilicate an/or an alkylsilicate oligomer. An independent claim is included for the production of casting molds and cores using a molding composition containing the binding agent system (I).